DOC AIRBUS | AMM A320FLANDING GEAR - POSITION INFORMATION - DESCRIPTION AND OPERATION
** ON A/C NOT FOR ALL
1. General
Two Landing Gear Control and Interface Units (LGCIUs) supply an interface between the landing gear (L/G) system and other systems which require L/G position information. Each LGCIU controls the position relays.
The L/G control lever supplies position information, this is done independently from the LGCIUs. The switch contacts operated by the control-lever (which are not used to control L/G operations), are used for this function.
** ON A/C NOT FOR ALL Two Landing Gear Control and Interface Units (LGCIUs) supply an interface between the landing gear (L/G) system and other systems which require L/G position information. Each LGCIU controls the position relays.
The L/G control lever supplies position information, this is done independently from the LGCIUs. The switch contacts operated by the control-lever (which are not used to control L/G operations), are used for this function.
2. Component Location
** ON A/C NOT FOR ALL | FIN | FUNCTIONAL DESIGNATION | PANEL | ZONE | ACCESS DOOR | ATA REF |
|---|---|---|---|---|---|
| ** ON A/C ALL | |||||
| 6GA | LEVER-L/G NORM CTL | 400VU | 212 | 32-31-11 | |
| 5GA1 | LGCIU-1 | 93VU | 121 | 32-31-71 | |
| 5GA2 | LGCIU-2 | 94VU | 122 | 32-31-71 | |
3. System Description
The proximity sensors supply L/G position information to the LGCIUs. This information is supplied as an electronic logic output. These logic outputs are divided into two signals, normal and complementary. The signals are used as follows:
These signals let the LGCIUs supply two different types of output signal to other aircraft systems. The two types of signal are:
The normal and the complementary signals are used by the LGCIUs to supply the ARINC 429 data transmissions. An internal microprocessor controls the data transmissions, which are then supplied on three data buses.
The LGCIU uses only the complementary signals to supply the discrete output signals. These discrete output signals are switched by two types of transistor.
These are:
The ARINC 429 and the discrete output signals supply the same information. Thus two signals are available where necessary.
The LGCIU supplies the signals to the other aircraft systems when the L/G is in these positions:
Each LGCIU controls a L/G position-relay:
Some of the relay switch contacts (which are not used in the L/G control circuits) are used to control other aircraft systems. The relays are energized when the two legs of the MLG are compressed.
The L/G control lever has two switch contacts which are not used for L/G control. These switch contacts (1 UP/1 DOWN) are used to control other aircraft systems.
** ON A/C NOT FOR ALL 
Landing-Gear Position Information - SchematicThe proximity sensors supply L/G position information to the LGCIUs. This information is supplied as an electronic logic output. These logic outputs are divided into two signals, normal and complementary. The signals are used as follows:
- normal logic on, complementary logic off
- normal logic off, complementary logic on.
These signals let the LGCIUs supply two different types of output signal to other aircraft systems. The two types of signal are:
- ARINC 429 data transmissions
- discrete (transistor) signals.
The normal and the complementary signals are used by the LGCIUs to supply the ARINC 429 data transmissions. An internal microprocessor controls the data transmissions, which are then supplied on three data buses.
The LGCIU uses only the complementary signals to supply the discrete output signals. These discrete output signals are switched by two types of transistor.
These are:
- transistors that change the signal to 28Vdc for ON
- transistors that change the signal to ground for ON.
The ARINC 429 and the discrete output signals supply the same information. Thus two signals are available where necessary.
The LGCIU supplies the signals to the other aircraft systems when the L/G is in these positions:
- L/G compressed - Nose, LH, RH, (LH & RH)
- L/G extended - Nose, LH, RH, (LH & RH)
- L/G downlocked - Nose, LH, RH, (LH & RH)
- L/G Uplock unlocked - Nose.
Each LGCIU controls a L/G position-relay:
- LGCIU (5GA1) controls relay 11GB
- LGCIU (5GA2) controls relay 12GB.
Some of the relay switch contacts (which are not used in the L/G control circuits) are used to control other aircraft systems. The relays are energized when the two legs of the MLG are compressed.
The L/G control lever has two switch contacts which are not used for L/G control. These switch contacts (1 UP/1 DOWN) are used to control other aircraft systems.
4. Power Supply
The LGCIUs are supplied with electrical power through circuit breakers 1GA, 2GA, and 52GA as follows:
** ON A/C NOT FOR ALL The LGCIUs are supplied with electrical power through circuit breakers 1GA, 2GA, and 52GA as follows:
- LGCIU 1 by 1GA and 52GA
- LGCIU 2 by 2GA.
5. Interface
The tables that follow show the aircraft systems that receive L/G position signals from the No.1 and/or the No.2 system LGCIU(s).
The information contained in the tables is as follows:
The landing-gear position-relays, control the systems that follow:
The landing-gear control-lever (6GA) controls the systems that follow:
The tables that follow show the aircraft systems that receive L/G position signals from the No.1 and/or the No.2 system LGCIU(s).
The information contained in the tables is as follows:
- TABLE TITLE, the landing gear position
- LGCIU No.1/No.2, source of the output signal and the L/G used to cause an output signal,
L = LH main L/G
R = RH main L/G
M = LH & RH main L/G
N = Nose L/G - SIG, type of output signal,
A = transistors that change the signal to 28V D.C. for on
B = transistors that change the signal to ground for on
B*= transistors that change the signal to ground for on with an additional ground connector. These circuits are kept in an aircraft-on-the-ground condition when ground power is supplied to the aircraft
SC= special case transistor, this transistor conducts to 28V when on. It is kept in an aircraft-on-the-ground condition when ground power is supplied or when the nose landing gear is compressed - 020/021 = ARINC 429 data labels
- SI, system identification of electrical circuits.
- ATA, controlled systems ATA function
- FUNCTION.
| ------------------------------------------------------------------------------- |
| LANDING GEAR COMPRESSED |
| LGCIU No.1 LGCIU No.2 SIG SI ATA FUNCTION |
| ------------------------------------------------------------------------------- |
| M M B HQ 2126 AVIONICS EQUIPMENT VENTILATION |
| M B HN 2128 CARGO COMP VENTILATION |
| M M B HL 2131 CABIN PRESS CONTROL/MONITORING |
| L R B HH 2161 PACK TEMP CONTROLS |
| N N B CC 2268 FLT AUGMENTATION CMPTR |
| N N 021 CC 2269 FLT AUGMENTATION CMPTR |
| (FAC 1/2) |
| L R L R 021 CC 2269 FAC 1/2 |
| N N B CA 2285 FLT GUIDANCE CMPTR |
| M M B* RJ 2344 CABIN/SERVICE INTERPHONE |
| M M B* RH 2373 CIDS |
| M B XA 2426 GALLEY SUPPLY CONTROL |
| N B XB 2428 STATIC INVERTOR GENERATION |
| M A PB 2438 ELECT EMERGENCY GENERATION |
| M A PB 2438 EMERGENCY GENERATION LOGIC |
| M M B WD 2612 ENG FIRE/OVERHEAT DETECTION |
| M M B WG 2613 APU FIRE/OVERHEAT DETECTION |
| M A WF 2622 APU FIRE EXTINGUISHING |
| M M B CV 2751 FLAPS ELECTRICAL CONTROL |
| AND MONITORING |
| M M B CV 2751 SLATS ELECTRICAL CONTROL |
| AND MONITORING |
| L R N L R N B CE 2792 EFCS (ELAC 1&2) |
| M L R 021 CE 2794 EFCS (SEC) |
| N N B CE 2795 FCDC |
| L R N L R N B* DA 3031 PROBE ICE PROTECTION |
| N B* TW 3132 CFDIU |
| M M 021 TV 3137 DMU |
| L L B WW 3152 FWC ACQUISTION/INTERFACE |
| L L B WV 3154 SDAC ACQUISTION/INTERFACE |
| L L B WT 3162 DMC 1 2 AND 3 |
| M B* GA 3231 L/G SAFETY VALVE CONTROL |
| R L R B GG 3242 NORMAL BRAKING/ANTI-SKID |
| SYSTEM CONTROL |
| M B GV 3249 TIRE PRESS MONITORING SYS |
| N B GC 3251 STEERING |
| M M B GB 3262 L/G POSITION RELAYS(11GB/12GB) |
| M B LY 3347 LOGO LIGHTS |
| M A LV 3348 ANTI COLLISION/STROBE LIGHTING |
| L R B SH 3452 ATC 1/2 |
| M B MG 3831 TOILET SYSTEM |
| L B TX 4621 AIR TRAFFIC SERVICE UNIT |
| L B TX 4621 DATALINK CONTROL AND |
| DISPLAY UNIT 1 |
| L B TX 4621 DATALINK CONTROL AND |
| DISPLAY UNIT 2 |
| M B KD 4961 APU CONTROL AND MONITORING |
| L L R B KS 7325 FADEC |
| N B* KS 7325 FADEC |
| ------------------------------------------------------------------------------- |
| LANDING GEAR COMPRESSED |
| LGCIU No.1 LGCIU No.2 SIG SI ATA FUNCTION |
| ------------------------------------------------------------------------------- |
| M M B HQ 2126 AVIONICS EQUIPMENT VENTILATION |
| M B HN 2128 CARGO COMP VENTILATION |
| M M B HL 2131 CABIN PRESS CONTROL/MONITORING |
| L R B HH 2161 PACK TEMP CONTROLS |
| N N B CC 2268 FLT AUGMENTATION CMPTR |
| N N 021 CC 2269 FLT AUGMENTATION CMPTR |
| (FAC 1/2) |
| L R L R 021 CC 2269 FAC 1/2 |
| N N B CA 2285 FLT GUIDANCE CMPTR |
| M M B* RJ 2344 CABIN/SERVICE INTERPHONE |
| M M B* RH 2373 CIDS |
| M B XA 2426 GALLEY SUPPLY CONTROL |
| N B XB 2428 STATIC INVERTOR GENERATION |
| M A PB 2438 ELECT EMERGENCY GENERATION |
| M A PB 2438 EMERGENCY GENERATION LOGIC |
| M M B WD 2612 ENG FIRE/OVERHEAT DETECTION |
| M M B WG 2613 APU FIRE/OVERHEAT DETECTION |
| M A WF 2622 APU FIRE EXTINGUISHING |
| M M B CV 2751 FLAPS ELECTRICAL CONTROL |
| AND MONITORING |
| M M B CV 2751 SLATS ELECTRICAL CONTROL |
| AND MONITORING |
| L R N L R N B CE 2792 EFCS (ELAC 1&2) |
| M L R 021 CE 2794 EFCS (SEC) |
| N N B CE 2795 FCDC |
| L R N L R N B* DA 3031 PROBE ICE PROTECTION |
| N B* TW 3132 CFDIU |
| M M 021 TV 3137 DMU |
| R B* TD 3138 DATALOADING ROUTING BOX |
| L L B WW 3152 FWC ACQUISTION/INTERFACE |
| L L B WV 3154 SDAC ACQUISTION/INTERFACE |
| L L B WT 3162 DMC 1 2 AND 3 |
| M B* GA 3231 L/G SAFETY VALVE CONTROL |
| R L R B GG 3242 NORMAL BRAKING/ANTI-SKID |
| SYSTEM CONTROL |
| M B GV 3249 TIRE PRESS MONITORING SYS |
| N B GC 3251 STEERING |
| M M B GB 3262 L/G POSITION RELAYS(11GB/12GB) |
| M B LY 3347 LOGO LIGHTS |
| M A LV 3348 ANTI COLLISION/STROBE LIGHTING |
| L R B SH 3452 ATC 1/2 |
| M B MG 3831 TOILET SYSTEM |
| L B TX 4621 AIR TRAFFIC SERVICE UNIT |
| L B TX 4621 DATALINK CONTROL AND |
| DISPLAY UNIT 1 |
| L B TX 4621 DATALINK CONTROL AND |
| DISPLAY UNIT 2 |
| M B KD 4961 APU CONTROL AND MONITORING |
| L L R B KS 7325 FADEC |
| N B* KS 7325 FADEC |
| ------------------------------------------------------------------------------- |
| LANDING GEAR COMPRESSED |
| LGCIU No.1 LGCIU No.2 SIG SI ATA FUNCTION |
| ------------------------------------------------------------------------------- |
| M M B HQ 2126 AVIONICS EQUIPMENT VENTILATION |
| M B HN 2128 CARGO COMP VENTILATION |
| M M B HL 2131 CABIN PRESS CONTROL/MONITORING |
| L R B HH 2161 PACK TEMP CONTROLS |
| N N B CC 2268 FLT AUGMENTATION CMPTR |
| N N 021 CC 2269 FLT AUGMENTATION CMPTR |
| (FAC 1/2) |
| L R L R 021 CC 2269 FAC 1/2 |
| N N B CA 2285 FLT GUIDANCE CMPTR |
| R B RE 2311 HIGH FREQUENCY DATA RADIO 1 |
| M M B* RJ 2344 CABIN/SERVICE INTERPHONE |
| M M B* RH 2373 CIDS |
| M B XA 2426 GALLEY SUPPLY CONTROL |
| N B XB 2428 STATIC INVERTOR GENERATION |
| M A PB 2438 ELECT EMERGENCY GENERATION |
| M A PB 2438 EMERGENCY GENERATION LOGIC |
| M M B WD 2612 ENG FIRE/OVERHEAT DETECTION |
| M M B WG 2613 APU FIRE/OVERHEAT DETECTION |
| M A WF 2622 APU FIRE EXTINGUISHING |
| M M B CV 2751 FLAPS ELECTRICAL CONTROL |
| AND MONITORING |
| M M B CV 2751 SLATS ELECTRICAL CONTROL |
| AND MONITORING |
| L R N L R N B CE 2792 EFCS (ELAC 1&2) |
| M L R 021 CE 2794 EFCS (SEC) |
| N N B CE 2795 FCDC |
| L R N L R N B* DA 3031 PROBE ICE PROTECTION |
| N B* TW 3132 CFDIU |
| M M 021 TV 3137 DMU |
| R B* TD 3138 DATALOADING ROUTING BOX |
| L L B WW 3152 FWC ACQUISTION/INTERFACE |
| L L B WV 3154 SDAC ACQUISTION/INTERFACE |
| L L B WT 3162 DMC 1 2 AND 3 |
| M B* GA 3231 L/G SAFETY VALVE CONTROL |
| R L R B GG 3242 NORMAL BRAKING/ANTI-SKID |
| SYSTEM CONTROL |
| M B GV 3249 TIRE PRESS MONITORING SYS |
| N B GC 3251 STEERING |
| M M B GB 3262 L/G POSITION RELAYS(11GB/12GB) |
| M B LY 3347 LOGO LIGHTS |
| M A LV 3348 ANTI COLLISION/STROBE LIGHTING |
| L R B SH 3452 ATC 1/2 |
| M B MG 3831 TOILET SYSTEM |
| L B TX 4621 AIR TRAFFIC SERVICE UNIT |
| L B TX 4621 DATALINK CONTROL AND |
| DISPLAY UNIT 1 |
| L B TX 4621 DATALINK CONTROL AND |
| DISPLAY UNIT 2 |
| M B KD 4961 APU CONTROL AND MONITORING |
| L L R B KS 7325 FADEC |
| N B* KS 7325 FADEC |
| ------------------------------------------------------------------------------- |
| LANDING GEAR COMPRESSED |
| LGCIU No.1 LGCIU No.2 SIG SI ATA FUNCTION |
| ------------------------------------------------------------------------------- |
| M M B HQ 2126 AVIONICS EQUIPMENT VENTILATION |
| M B HN 2128 CARGO COMP VENTILATION |
| M M B HL 2131 CABIN PRESS CONTROL/MONITORING |
| L R B HH 2161 PACK TEMP CONTROLS |
| N N B CC 2268 FLT AUGMENTATION CMPTR |
| N N 021 CC 2269 FLT AUGMENTATION CMPTR |
| (FAC 1/2) |
| L R L R 021 CC 2269 FAC 1/2 |
| N N B CA 2285 FLT GUIDANCE CMPTR |
| R B RE 2311 HIGH FREQUENCY DATA RADIO 1 |
| M M B* RJ 2344 CABIN/SERVICE INTERPHONE |
| M M B* RH 2373 CIDS |
| M B XA 2426 GALLEY SUPPLY CONTROL |
| N B XB 2428 STATIC INVERTOR GENERATION |
| M A PB 2438 ELECT EMERGENCY GENERATION |
| M A PB 2438 EMERGENCY GENERATION LOGIC |
| M M B WD 2612 ENG FIRE/OVERHEAT DETECTION |
| M M B WG 2613 APU FIRE/OVERHEAT DETECTION |
| M A WF 2622 APU FIRE EXTINGUISHING |
| M M B CV 2751 FLAPS ELECTRICAL CONTROL |
| AND MONITORING |
| M M B CV 2751 SLATS ELECTRICAL CONTROL |
| AND MONITORING |
| L R N L R N B CE 2792 EFCS (ELAC 1&2) |
| M L R 021 CE 2794 EFCS (SEC) |
| N N B CE 2795 FCDC |
| L R N L R N B* DA 3031 PROBE ICE PROTECTION |
| N B* TW 3132 CFDIU |
| M M 021 TV 3137 DMU |
| R B* TD 3138 DATALOADING ROUTING BOX |
| L L B WW 3152 FWC ACQUISTION/INTERFACE |
| L L B WV 3154 SDAC ACQUISTION/INTERFACE |
| L L B WT 3162 DMC 1 2 AND 3 |
| M B* GA 3231 L/G SAFETY VALVE CONTROL |
| R L R B GG 3242 NORMAL BRAKING/ANTI-SKID |
| SYSTEM CONTROL |
| N B GG 3243 BRAKES AND STEERING CONTROL |
| UNIT |
| M B GV 3249 TIRE PRESS MONITORING SYS |
| N B GC 3251 STEERING |
| M M B GB 3262 L/G POSITION RELAYS(11GB/12GB) |
| M B LY 3347 LOGO LIGHTS |
| M A LV 3348 ANTI COLLISION/STROBE LIGHTING |
| L R B SH 3452 ATC 1/2 |
| M B MG 3831 TOILET SYSTEM |
| L B TX 4621 AIR TRAFFIC SERVICE UNIT |
| L B TX 4621 DATALINK CONTROL AND |
| DISPLAY UNIT 1 |
| L B TX 4621 DATALINK CONTROL AND |
| DISPLAY UNIT 2 |
| M B KD 4961 APU CONTROL AND MONITORING |
| L L R B KS 7325 FADEC |
| N B* KS 7325 FADEC |
| ------------------------------------------------------------------------------- |
| LANDING GEAR COMPRESSED |
| LGCIU No.1 LGCIU No.2 SIG SI ATA FUNCTION |
| ------------------------------------------------------------------------------- |
| M M B HQ 2126 AVIONICS EQUIPMENT VENTILATION |
| M B HN 2128 CARGO COMP VENTILATION |
| M M B HL 2131 CABIN PRESS CONTROL/MONITORING |
| L R B HH 2161 PACK TEMP CONTROLS |
| N N B CC 2268 FLT AUGMENTATION CMPTR |
| N N 021 CC 2269 FLT AUGMENTATION CMPTR |
| (FAC 1/2) |
| L R L R 021 CC 2269 FAC 1/2 |
| N N B CA 2285 FLT GUIDANCE CMPTR |
| M M B* RJ 2344 CABIN/SERVICE INTERPHONE |
| M M B* RH 2373 CIDS |
| M B XA 2426 GALLEY SUPPLY CONTROL |
| N B XB 2428 STATIC INVERTOR GENERATION |
| M A PB 2438 ELECT EMERGENCY GENERATION |
| M A PB 2438 EMERGENCY GENERATION LOGIC |
| M M B WD 2612 ENG FIRE/OVERHEAT DETECTION |
| M M B WG 2613 APU FIRE/OVERHEAT DETECTION |
| M A WF 2622 APU FIRE EXTINGUISHING |
| M M B CV 2751 FLAPS ELECTRICAL CONTROL |
| AND MONITORING |
| M M B CV 2751 SLATS ELECTRICAL CONTROL |
| AND MONITORING |
| L R N L R N B CE 2792 EFCS (ELAC 1&2) |
| M L R 021 CE 2794 EFCS (SEC) |
| N N B CE 2795 FCDC |
| L R N L R N B* DA 3031 PROBE ICE PROTECTION |
| N B* TW 3132 CFDIU |
| M M 021 TV 3137 DMU |
| R B* TD 3138 DATALOADING ROUTING BOX |
| L L B WW 3152 FWC ACQUISTION/INTERFACE |
| L L B WV 3154 SDAC ACQUISTION/INTERFACE |
| L L B WT 3162 DMC 1 2 AND 3 |
| M B* GA 3231 L/G SAFETY VALVE CONTROL |
| R L R B GG 3242 NORMAL BRAKING/ANTI-SKID |
| SYSTEM CONTROL |
| N B GG 3243 BRAKES AND STEERING CONTROL |
| UNIT |
| M B GV 3249 TIRE PRESS MONITORING SYS |
| N B GC 3251 STEERING |
| M M B GB 3262 L/G POSITION RELAYS(11GB/12GB) |
| M B LY 3347 LOGO LIGHTS |
| M A LV 3348 ANTI COLLISION/STROBE LIGHTING |
| L R B SH 3452 ATC 1/2 |
| M B MG 3831 TOILET SYSTEM |
| R B* TL 4611 SERVER INTERFACE UNIT |
| L B TX 4621 AIR TRAFFIC SERVICE UNIT |
| L B TX 4621 DATALINK CONTROL AND |
| DISPLAY UNIT 1 |
| L B TX 4621 DATALINK CONTROL AND |
| DISPLAY UNIT 2 |
| M B KD 4961 APU CONTROL AND MONITORING |
| L L R B KS 7325 FADEC |
| N B* KS 7325 FADEC |
| ------------------------------------------------------------------------------- |
| LANDING GEAR COMPRESSED |
| LGCIU No.1 LGCIU No.2 SIG SI ATA FUNCTION |
| ------------------------------------------------------------------------------- |
| M M B HQ 2126 AVIONICS EQUIPMENT VENTILATION |
| M B HN 2128 CARGO COMP VENTILATION |
| M M B HL 2131 CABIN PRESS CONTROL/MONITORING |
| L R B HH 2161 PACK TEMP CONTROLS |
| N N B CC 2268 FLT AUGMENTATION CMPTR |
| N N 021 CC 2269 FLT AUGMENTATION CMPTR |
| (FAC 1/2) |
| L R L R 021 CC 2269 FAC 1/2 |
| N N B CA 2285 FLT GUIDANCE CMPTR |
| M M B* RJ 2344 CABIN/SERVICE INTERPHONE |
| M M B* RH 2373 CIDS |
| M B XA 2426 GALLEY SUPPLY CONTROL |
| N B XB 2428 STATIC INVERTOR GENERATION |
| M A PB 2438 ELECT EMERGENCY GENERATION |
| M A PB 2438 EMERGENCY GENERATION LOGIC |
| M M B WD 2612 ENG FIRE/OVERHEAT DETECTION |
| M M B WG 2613 APU FIRE/OVERHEAT DETECTION |
| M A WF 2622 APU FIRE EXTINGUISHING |
| M M B CV 2751 FLAPS ELECTRICAL CONTROL |
| AND MONITORING |
| M M B CV 2751 SLATS ELECTRICAL CONTROL |
| AND MONITORING |
| L R N L R N B CE 2792 EFCS (ELAC 1&2) |
| M L R 021 CE 2794 EFCS (SEC) |
| N N B CE 2795 FCDC |
| N B QH 2828 FUEL |
| L R N L R N B* DA 3031 PROBE ICE PROTECTION |
| N B* TW 3132 CFDIU |
| M M 021 TV 3137 DMU |
| R B* TD 3138 DATALOADING ROUTING BOX |
| L L B WW 3152 FWC ACQUISTION/INTERFACE |
| L L B WV 3154 SDAC ACQUISTION/INTERFACE |
| L L B WT 3162 DMC 1 2 AND 3 |
| M B* GA 3231 L/G SAFETY VALVE CONTROL |
| R L R B GG 3242 NORMAL BRAKING/ANTI-SKID |
| SYSTEM CONTROL |
| N B GG 3243 BRAKES AND STEERING CONTROL |
| UNIT |
| M B GV 3249 TIRE PRESS MONITORING SYS |
| N B GC 3251 STEERING |
| M M B GB 3262 L/G POSITION RELAYS(11GB/12GB) |
| M B LY 3347 LOGO LIGHTS |
| M A LV 3348 ANTI COLLISION/STROBE LIGHTING |
| L R B SH 3452 ATC 1/2 |
| M B MG 3831 TOILET SYSTEM |
| R B* TL 4611 SERVER INTERFACE UNIT |
| L B TX 4621 AIR TRAFFIC SERVICE UNIT |
| L B TX 4621 DATALINK CONTROL AND |
| DISPLAY UNIT 1 |
| L B TX 4621 DATALINK CONTROL AND |
| DISPLAY UNIT 2 |
| M B KD 4961 APU CONTROL AND MONITORING |
| L L R B KS 7325 FADEC |
| N B* KS 7325 FADEC |
| ------------------------------------------------------------------------------- |
| LANDING GEAR COMPRESSED |
| LGCIU No.1 LGCIU No.2 SIG SI ATA FUNCTION |
| ------------------------------------------------------------------------------- |
| M M B HQ 2126 AVIONICS EQUIPMENT VENTILATION |
| M B HN 2128 CARGO COMP VENTILATION |
| M M B HL 2131 CABIN PRESS CONTROL/MONITORING |
| L R B HH 2161 PACK TEMP CONTROLS |
| N N B CC 2268 FLT AUGMENTATION CMPTR |
| N N 021 CC 2269 FLT AUGMENTATION CMPTR |
| (FAC 1/2) |
| L R L R 021 CC 2269 FAC 1/2 |
| N N B CA 2285 FLT GUIDANCE CMPTR |
| R B RE 2311 HIGH FREQUENCY DATA RADIO 1 |
| M M B* RJ 2344 CABIN/SERVICE INTERPHONE |
| M M B* RH 2373 CIDS |
| M B XA 2426 GALLEY SUPPLY CONTROL |
| N B XB 2428 STATIC INVERTOR GENERATION |
| M A PB 2438 ELECT EMERGENCY GENERATION |
| M A PB 2438 EMERGENCY GENERATION LOGIC |
| M M B WD 2612 ENG FIRE/OVERHEAT DETECTION |
| M M B WG 2613 APU FIRE/OVERHEAT DETECTION |
| M A WF 2622 APU FIRE EXTINGUISHING |
| M M B CV 2751 FLAPS ELECTRICAL CONTROL |
| AND MONITORING |
| M M B CV 2751 SLATS ELECTRICAL CONTROL |
| AND MONITORING |
| L R N L R N B CE 2792 EFCS (ELAC 1&2) |
| M L R 021 CE 2794 EFCS (SEC) |
| N N B CE 2795 FCDC |
| L R N L R N B* DA 3031 PROBE ICE PROTECTION |
| N B* TW 3132 CFDIU |
| M M 021 TV 3137 DMU |
| R B* TD 3138 DATALOADING ROUTING BOX |
| L L B WW 3152 FWC ACQUISTION/INTERFACE |
| L L B WV 3154 SDAC ACQUISTION/INTERFACE |
| L L B WT 3162 DMC 1 2 AND 3 |
| M B* GA 3231 L/G SAFETY VALVE CONTROL |
| R L R B GG 3242 NORMAL BRAKING/ANTI-SKID |
| SYSTEM CONTROL |
| N B GG 3243 BRAKES AND STEERING CONTROL |
| UNIT |
| M B GV 3249 TIRE PRESS MONITORING SYS |
| N B GC 3251 STEERING |
| M M B GB 3262 L/G POSITION RELAYS(11GB/12GB) |
| M B LY 3347 LOGO LIGHTS |
| M A LV 3348 ANTI COLLISION/STROBE LIGHTING |
| L R B SH 3452 ATC 1/2 |
| M B MG 3831 TOILET SYSTEM |
| R B* TL 4611 SERVER INTERFACE UNIT |
| L B TX 4621 AIR TRAFFIC SERVICE UNIT |
| L B TX 4621 DATALINK CONTROL AND |
| DISPLAY UNIT 1 |
| L B TX 4621 DATALINK CONTROL AND |
| DISPLAY UNIT 2 |
| M B KD 4961 APU CONTROL AND MONITORING |
| L L R B KS 7325 FADEC |
| N B* KS 7325 FADEC |
| ------------------------------------------------------------------------------- |
| LANDING GEAR COMPRESSED |
| LGCIU No.1 LGCIU No.2 SIG SI ATA FUNCTION |
| ------------------------------------------------------------------------------- |
| M M B HQ 2126 AVIONICS EQUIPMENT VENTILATION |
| M B HN 2128 CARGO COMP VENTILATION |
| M M B HL 2131 CABIN PRESS CONTROL/MONITORING |
| L R B HH 2161 PACK TEMP CONTROLS |
| N N B CC 2268 FLT AUGMENTATION CMPTR |
| N N 021 CC 2269 FLT AUGMENTATION CMPTR |
| (FAC 1/2) |
| L R L R 021 CC 2269 FAC 1/2 |
| N N B CA 2285 FLT GUIDANCE CMPTR |
| R B RE 2311 HIGH FREQUENCY DATA RADIO 1 |
| M M B* RJ 2344 CABIN/SERVICE INTERPHONE |
| M M B* RH 2373 CIDS |
| M B XA 2426 GALLEY SUPPLY CONTROL |
| N B XB 2428 STATIC INVERTOR GENERATION |
| M A PB 2438 ELECT EMERGENCY GENERATION |
| M A PB 2438 EMERGENCY GENERATION LOGIC |
| M M B WD 2612 ENG FIRE/OVERHEAT DETECTION |
| M M B WG 2613 APU FIRE/OVERHEAT DETECTION |
| M A WF 2622 APU FIRE EXTINGUISHING |
| M M B CV 2751 FLAPS ELECTRICAL CONTROL |
| AND MONITORING |
| M M B CV 2751 SLATS ELECTRICAL CONTROL |
| AND MONITORING |
| L R N L R N B CE 2792 EFCS (ELAC 1&2) |
| M L R 021 CE 2794 EFCS (SEC) |
| N N B CE 2795 FCDC |
| L R N L R N B* DA 3031 PROBE ICE PROTECTION |
| N B* TW 3132 CFDIU |
| M B TV 3136 WIRELESS GROUND LINK DAR |
| M M 021 TV 3137 DMU |
| R B* TD 3138 DATALOADING ROUTING BOX |
| L L B WW 3152 FWC ACQUISTION/INTERFACE |
| L L B WV 3154 SDAC ACQUISTION/INTERFACE |
| L L B WT 3162 DMC 1 2 AND 3 |
| M B* GA 3231 L/G SAFETY VALVE CONTROL |
| R L R B GG 3242 NORMAL BRAKING/ANTI-SKID |
| SYSTEM CONTROL |
| N B GG 3243 BRAKES AND STEERING CONTROL |
| UNIT |
| M B GV 3249 TIRE PRESS MONITORING SYS |
| N B GC 3251 STEERING |
| M M B GB 3262 L/G POSITION RELAYS(11GB/12GB) |
| M B LY 3347 LOGO LIGHTS |
| M A LV 3348 ANTI COLLISION/STROBE LIGHTING |
| L R B SH 3452 ATC 1/2 |
| M B MG 3831 TOILET SYSTEM |
| R B* TL 4611 SERVER INTERFACE UNIT |
| L B TX 4621 AIR TRAFFIC SERVICE UNIT |
| L B TX 4621 DATALINK CONTROL AND |
| DISPLAY UNIT 1 |
| L B TX 4621 DATALINK CONTROL AND |
| DISPLAY UNIT 2 |
| M B KD 4961 APU CONTROL AND MONITORING |
| L L R B KS 7325 FADEC |
| N B* KS 7325 FADEC |
| ------------------------------------------------------------------------------- |
| LANDING GEAR COMPRESSED |
| LGCIU No.1 LGCIU No.2 SIG SI ATA FUNCTION |
| ------------------------------------------------------------------------------- |
| M M B HQ 2126 AVIONICS EQUIPMENT VENTILATION |
| M B HN 2128 CARGO COMP VENTILATION |
| M M B HL 2131 CABIN PRESS CONTROL/MONITORING |
| L R B HH 2161 PACK TEMP CONTROLS |
| N N B CC 2268 FLT AUGMENTATION CMPTR |
| N N 021 CC 2269 FLT AUGMENTATION CMPTR |
| (FAC 1/2) |
| L R L R 021 CC 2269 FAC 1/2 |
| N N B CA 2285 FLT GUIDANCE CMPTR |
| M M B* RJ 2344 CABIN/SERVICE INTERPHONE |
| M M B* RH 2373 CIDS |
| M B XA 2426 GALLEY SUPPLY CONTROL |
| N B XB 2428 STATIC INVERTOR GENERATION |
| M A PB 2438 ELECT EMERGENCY GENERATION |
| M A PB 2438 EMERGENCY GENERATION LOGIC |
| M M B WD 2612 ENG FIRE/OVERHEAT DETECTION |
| M M B WG 2613 APU FIRE/OVERHEAT DETECTION |
| M A WF 2622 APU FIRE EXTINGUISHING |
| M M B CV 2751 FLAPS ELECTRICAL CONTROL |
| AND MONITORING |
| M M B CV 2751 SLATS ELECTRICAL CONTROL |
| AND MONITORING |
| L R N L R N B CE 2792 EFCS (ELAC 1&2) |
| M L R 021 CE 2794 EFCS (SEC) |
| N N B CE 2795 FCDC |
| L R N L R N B* DA 3031 PROBE ICE PROTECTION |
| M B DW 3073 POTABLE WATER ICE PROTECTION |
| N B* TW 3132 CFDIU |
| M M 021 TV 3137 DMU |
| R B* TD 3138 DATALOADING ROUTING BOX |
| L L B WW 3152 FWC ACQUISTION/INTERFACE |
| L L B WV 3154 SDAC ACQUISTION/INTERFACE |
| L L B WT 3162 DMC 1 2 AND 3 |
| M B* GA 3231 L/G SAFETY VALVE CONTROL |
| R L R B GG 3242 NORMAL BRAKING/ANTI-SKID |
| SYSTEM CONTROL |
| N B GG 3243 BRAKES AND STEERING CONTROL |
| UNIT |
| M B GV 3249 TIRE PRESS MONITORING SYS |
| N B GC 3251 STEERING |
| M M B GB 3262 L/G POSITION RELAYS(11GB/12GB) |
| M B LY 3347 LOGO LIGHTS |
| M A LV 3348 ANTI COLLISION/STROBE LIGHTING |
| L R B SH 3452 ATC 1/2 |
| M B MG 3831 TOILET SYSTEM |
| R B* TL 4611 SERVER INTERFACE UNIT |
| L B TX 4621 AIR TRAFFIC SERVICE UNIT |
| L B TX 4621 DATALINK CONTROL AND |
| DISPLAY UNIT 1 |
| L B TX 4621 DATALINK CONTROL AND |
| DISPLAY UNIT 2 |
| M B KD 4961 APU CONTROL AND MONITORING |
| L L R B KS 7325 FADEC |
| N B* KS 7325 FADEC |
| ------------------------------------------------------------------------------- |
| LANDING GEAR COMPRESSED |
| LGCIU No.1 LGCIU No.2 SIG SI ATA FUNCTION |
| ------------------------------------------------------------------------------- |
| M M B HQ 2126 AVIONICS EQUIPMENT VENTILATION |
| M B HN 2128 CARGO COMP VENTILATION |
| M M B HL 2131 CABIN PRESS CONTROL/MONITORING |
| L R B HH 2161 PACK TEMP CONTROLS |
| N N B CC 2268 FLT AUGMENTATION CMPTR |
| N N 021 CC 2269 FLT AUGMENTATION CMPTR |
| (FAC 1/2) |
| L R L R 021 CC 2269 FAC 1/2 |
| N N B CA 2285 FLT GUIDANCE CMPTR |
| M M B* RJ 2344 CABIN/SERVICE INTERPHONE |
| M M B* RH 2373 CIDS |
| M B XA 2426 GALLEY SUPPLY CONTROL |
| N B XB 2428 STATIC INVERTOR GENERATION |
| M A PB 2438 ELECT EMERGENCY GENERATION |
| M A PB 2438 EMERGENCY GENERATION LOGIC |
| M M B WD 2612 ENG FIRE/OVERHEAT DETECTION |
| M M B WG 2613 APU FIRE/OVERHEAT DETECTION |
| M A WF 2622 APU FIRE EXTINGUISHING |
| M M B CV 2751 FLAPS ELECTRICAL CONTROL |
| AND MONITORING |
| M M B CV 2751 SLATS ELECTRICAL CONTROL |
| AND MONITORING |
| L R N L R N B CE 2792 EFCS (ELAC 1&2) |
| M L R 021 CE 2794 EFCS (SEC) |
| N N B CE 2795 FCDC |
| N B QH 2828 FUEL |
| L R N L R N B* DA 3031 PROBE ICE PROTECTION |
| N B* TW 3132 CFDIU |
| M B TV 3136 WIRELESS GROUND LINK DAR |
| M M 021 TV 3137 DMU |
| R B* TD 3138 DATALOADING ROUTING BOX |
| L L B WW 3152 FWC ACQUISTION/INTERFACE |
| L L B WV 3154 SDAC ACQUISTION/INTERFACE |
| L L B WT 3162 DMC 1 2 AND 3 |
| M B* GA 3231 L/G SAFETY VALVE CONTROL |
| R L R B GG 3242 NORMAL BRAKING/ANTI-SKID |
| SYSTEM CONTROL |
| N B GG 3243 BRAKES AND STEERING CONTROL |
| UNIT |
| M B GV 3249 TIRE PRESS MONITORING SYS |
| N B GC 3251 STEERING |
| M M B GB 3262 L/G POSITION RELAYS(11GB/12GB) |
| M B LY 3347 LOGO LIGHTS |
| M A LV 3348 ANTI COLLISION/STROBE LIGHTING |
| L R B SH 3452 ATC 1/2 |
| M B MG 3831 TOILET SYSTEM |
| R B* TL 4611 SERVER INTERFACE UNIT |
| L B TX 4621 AIR TRAFFIC SERVICE UNIT |
| L B TX 4621 DATALINK CONTROL AND |
| DISPLAY UNIT 1 |
| L B TX 4621 DATALINK CONTROL AND |
| DISPLAY UNIT 2 |
| M B KD 4961 APU CONTROL AND MONITORING |
| L L R B KS 7325 FADEC |
| N B* KS 7325 FADEC |
| ------------------------------------------------------------------------------- |
| LANDING GEAR COMPRESSED |
| LGCIU No.1 LGCIU No.2 SIG SI ATA FUNCTION |
| ------------------------------------------------------------------------------- |
| M M B HQ 2126 AVIONICS EQUIPMENT VENTILATION |
| M B HN 2128 CARGO COMP VENTILATION |
| M M B HL 2131 CABIN PRESS CONTROL/MONITORING |
| L R B HH 2161 PACK TEMP CONTROLS |
| N N B CC 2268 FLT AUGMENTATION CMPTR |
| N N 021 CC 2269 FLT AUGMENTATION CMPTR |
| (FAC 1/2) |
| L R L R 021 CC 2269 FAC 1/2 |
| N N B CA 2285 FLT GUIDANCE CMPTR |
| R B RE 2311 HF DATA RADIO 1 |
| M M B* RJ 2344 CABIN/SERVICE INTERPHONE |
| M M B* RH 2373 CIDS |
| M B XA 2426 GALLEY SUPPLY CONTROL |
| N B XB 2428 STATIC INVERTOR GENERATION |
| M A PB 2438 ELECT EMERGENCY GENERATION |
| M A PB 2438 EMERGENCY GENERATION LOGIC |
| M M B WD 2612 ENG FIRE/OVERHEAT DETECTION |
| M M B WG 2613 APU FIRE/OVERHEAT DETECTION |
| M A WF 2622 APU FIRE EXTINGUISHING |
| M M B CV 2751 FLAPS ELECTRICAL CONTROL |
| AND MONITORING |
| M M B CV 2751 SLATS ELECTRICAL CONTROL |
| AND MONITORING |
| L R N L R N B CE 2792 EFCS (ELAC 1&2) |
| M L R 021 CE 2794 EFCS (SEC) |
| N N B CE 2795 FCDC |
| L R N L R N B* DA 3031 PROBE ICE PROTECTION |
| M B DW 3073 POTABLE WATER ICE PROTECTION |
| N B* TW 3132 CFDIU |
| M M 021 TV 3137 DMU |
| R B* TD 3138 DATALOADING ROUTING BOX |
| L L B WW 3152 FWC ACQUISTION/INTERFACE |
| L L B WV 3154 SDAC ACQUISTION/INTERFACE |
| L L B WT 3162 DMC 1 2 AND 3 |
| M B* GA 3231 L/G SAFETY VALVE CONTROL |
| R L R B GG 3242 NORMAL BRAKING/ANTI-SKID |
| SYSTEM CONTROL |
| N B GG 3243 BRAKES AND STEERING CONTROL |
| UNIT |
| M B GV 3249 TIRE PRESS MONITORING SYS |
| N B GC 3251 STEERING |
| M M B GB 3262 L/G POSITION RELAYS(11GB/12GB) |
| M B LY 3347 LOGO LIGHTS |
| M A LV 3348 ANTI COLLISION/STROBE LIGHTING |
| L R B SH 3452 ATC 1/2 |
| M B MG 3831 TOILET SYSTEM |
| R B* TL 4611 SERVER INTERFACE UNIT |
| L B TX 4621 AIR TRAFFIC SERVICE UNIT |
| L B TX 4621 DATALINK CONTROL AND |
| DISPLAY UNIT 1 |
| L B TX 4621 DATALINK CONTROL AND |
| DISPLAY UNIT 2 |
| M B KD 4961 APU CONTROL AND MONITORING |
| L L R B KS 7325 FADEC |
| N B* KS 7325 FADEC |
| ------------------------------------------------------------------------------- |
| LANDING GEAR COMPRESSED |
| LGCIU No.1 LGCIU No.2 SIG SI ATA FUNCTION |
| ------------------------------------------------------------------------------- |
| N B GL 2923 HYD POWER TRANSFER UNIT |
| ------------------------------------------------------------------------------- |
| LANDING GEAR EXTENDED |
| LGCIU No.1 LGCIU No.2 SIG SI ATA FUNCTION |
| ------------------------------------------------------------------------------- |
| L B RE 2311 HF (1/2) |
| L L B RC 2312 VHF (1 2 AND 3) |
| L L B RG 2313 RMP (1 2 AND 3) |
| N B RB 2324 ACARS |
| M B WC 2342 COCKPIT TO GROUNDCREW CALL |
| SYSTEM |
| M B RN 2351 AUDIO MANAGEMENT |
| N B RK 2371 COCKPIT VOICE RECORDER |
| N SC GJ 2912 BLUE MAIN HYD POWER |
| L R B DL 3011 WING ICE PROTECTION |
| N A FP 3411 ADIRS, POWER SUPPLY AND |
| SWITCHING |
| L R B RT 3436 ILS(1/2) |
| L B SQ 3441 RADAR (1/2) |
| L R B SA 3442 RADIO ALTIMETER |
| N B WZ 3448 GPWS |
| L R B SD 3451 DME (1/2) |
| L R B RP 3453 ADF (1/2) |
| L R B RS 3455 VOR (1/2) |
| ------------------------------------------------------------------------------- |
| LANDING GEAR EXTENDED |
| LGCIU No.1 LGCIU No.2 SIG SI ATA FUNCTION |
| ------------------------------------------------------------------------------- |
| L B RE 2311 HF (1/2) |
| L L B RC 2312 VHF (1 2 AND 3) |
| L L B RG 2313 RMP (1 2 AND 3) |
| N B RB 2324 ACARS |
| M B WC 2342 COCKPIT TO GROUNDCREW CALL |
| SYSTEM |
| M B RN 2351 AUDIO MANAGEMENT |
| N B RK 2371 COCKPIT VOICE RECORDER |
| L B XU/XG 2441 GENERATOR CONTROL UNIT 1 & |
| GROUND POWER CONTROL UNIT |
| R B XU 2442 GENERATOR CONTROL UNIT 2 |
| N SC GJ 2912 BLUE MAIN HYD POWER |
| L R B DL 3011 WING ICE PROTECTION |
| N A FP 3411 ADIRS, POWER SUPPLY AND |
| SWITCHING |
| L R B RT 3436 ILS(1/2) |
| L B SQ 3441 RADAR (1/2) |
| L R B SA 3442 RADIO ALTIMETER |
| N B WZ 3448 GPWS |
| L R B SD 3451 DME (1/2) |
| L R B RP 3453 ADF (1/2) |
| L R B RS 3455 VOR (1/2) |
| ------------------------------------------------------------------------------- |
| LANDING GEAR EXTENDED |
| LGCIU No.1 LGCIU No.2 SIG SI ATA FUNCTION |
| ------------------------------------------------------------------------------- |
| R B RE 2311 HF 1 |
| L B RE 2311 HF 2 |
| L L B RC 2312 VHF (1 2 AND 3) |
| L L B RG 2313 RMP (1 2 AND 3) |
| N B RB 2324 ACARS |
| M B WC 2342 COCKPIT TO GROUNDCREW CALL |
| SYSTEM |
| M B RN 2351 AUDIO MANAGEMENT |
| N B RK 2371 COCKPIT VOICE RECORDER |
| L B XU/XG 2441 GENERATOR CONTROL UNIT 1 & |
| GROUND POWER CONTROL UNIT |
| R B XU 2442 GENERATOR CONTROL UNIT 2 |
| L B QH 2846 FUEL |
| N SC GJ 2912 BLUE MAIN HYD POWER |
| L R B DL 3011 WING ICE PROTECTION |
| N A FP 3411 ADIRS, POWER SUPPLY AND |
| SWITCHING |
| L R B RT 3436 ILS(1/2) |
| L B SQ 3441 RADAR (1/2) |
| L R B SA 3442 RADIO ALTIMETER |
| N B WZ 3448 GPWS |
| L R B SD 3451 DME (1/2) |
| L R B RP 3453 ADF (1/2) |
| L R B RS 3455 VOR (1/2) |
| ------------------------------------------------------------------------------- |
| LANDING GEAR EXTENDED |
| LGCIU No.1 LGCIU No.2 SIG SI ATA FUNCTION |
| ------------------------------------------------------------------------------- |
| R B RE 2311 HF 1 |
| L B RE 2311 HF 2 |
| L L B RC 2312 VHF (1 2 AND 3) |
| L L B RG 2313 RMP (1 2 AND 3) |
| N B RB 2324 ACARS |
| M B WC 2342 COCKPIT TO GROUNDCREW CALL |
| SYSTEM |
| M B RN 2351 AUDIO MANAGEMENT |
| N B RK 2371 COCKPIT VOICE RECORDER |
| L B XU/XG 2441 GENERATOR CONTROL UNIT 1 & |
| GROUND POWER CONTROL UNIT |
| R B XU 2442 GENERATOR CONTROL UNIT 2 |
| L B QH 2846 FUEL |
| N SC GJ 2912 BLUE MAIN HYD POWER |
| L R B DL 3011 WING ICE PROTECTION |
| N A FP 3411 ADIRS, POWER SUPPLY AND |
| SWITCHING |
| L R B RT 3436 ILS(1/2) |
| L B SQ 3441 RADAR (1/2) |
| L R B SA 3442 RADIO ALTIMETER |
| N B WZ 3448 GPWS |
| L R B SD 3451 DME (1/2) |
| L R B RP 3453 ADF (1/2) |
| L R B RS 3455 VOR (1/2) |
| ------------------------------------------------------------------------------- |
| LANDING GEAR DOWNLOCKED |
| LGCIU No.1 LGCIU No.2 SIG SI ATA FUNCTION |
| ------------------------------------------------------------------------------- |
| M M 021 CC 2269 FLT AUGMENTATION CMPTR |
| M M B RJ 2344 SERVICE INTERPHONE |
| M M B RH 2373 CIDS |
| N N 020 TV 3137 DMU |
| N B GG 3242 NORMAL BRAKING ANTI-SKID |
| SYSTEM CONTROL |
| L B GS 3248 BRAKE COOLING |
| N N B GC 3251 STEERING (BSCU) |
| N B LR 3346 TAXI/TAKE OFF LIGHTS |
| L B WZ 3448 GPWS |
| ------------------------------------------------------------------------------- |
| LANDING GEAR UPLOCK UNLOCKED |
| LGCIU No.1 LGCIU No.2 SIG SI ATA FUNCTION |
| ------------------------------------------------------------------------------- |
| N A PH 2462 DC ESSENTIAL DISTRIBUTION |
The landing-gear position-relays, control the systems that follow:
| ------------------------------------------------------------------------------- |
| RELAY 11GB (No. 1 SYS) |
| SI ATA FUNCTION |
| ------------------------------------------------------------------------------- |
| FN 3421 STBY ALTITUDE AND AIRSPEED |
| QT 2842 FUEL QTY IND |
| WT 3168 EIS |
| ------------------------------------------------------------------------------- |
| RELAY 12GB (No. 2 SYS) |
| SI ATA FUNCTION |
| ------------------------------------------------------------------------------- |
| MJ 5235 CARGO COMPARTMENT DOOR ELECTRICAL CONTROL SYSTEM |
| RK 2371 COCKPIT VOICE RECORDER |
The landing-gear control-lever (6GA) controls the systems that follow:
| ------------------------------------------------------------------------------- |
| SI ATA FUNCTION |
| ------------------------------------------------------------------------------- |
| QT 2842 FUEL QUANTITY IND DOWN SWITCH CONTACTS |
| GG 3242 NORMAL BRAKES UP SWITCH CONTACTS |