Flight Configuration Precautions with Electrical Power

TASK 32-00-00-860-001-A
Flight Configuration Precautions with Electrical Power

WARNING: PUT THE SAFETY DEVICES AND THE WARNING NOTICES IN POSITION BEFORE YOU START A TASK ON OR NEAR:

THE FLIGHT CONTROLS
THE FLIGHT CONTROL SURFACES
THE LANDING GEAR AND THE RELATED DOORS
COMPONENTS THAT MOVE.

MOVEMENT OF COMPONENTS CAN KILL OR CAUSE INJURY TO PERSONS AND/OR CAN CAUSE DAMAGE TO THE EQUIPMENT.

1. Reason for the Job
To prevent damage to the anti-ice heat elements:

When the LGCIU 1 or LGCIU 2 circuit breakers are open
or
When the A/C is lifted on jacks.

To isolate other circuits to prevent flight configuration when you do maintenance tasks on the A/C.

NOTE: Do this task only if electrical power is necessary for subsequent maintenance tasks. If electrical power is not necessary, do the Flight Configuration Precautions without Electrical Power procedure (Ref. TASK 32-00-00-860-001-A-01).

2. Job Set-up Information
A. Referenced Information

REFERENCE	DESIGNATION
TASK 21-26-00-860-001-A	Configuration of the Avionics Compartment Ventilation System
TASK 21-26-00-860-001-A-01	Configuration of the Avionics Compartment Ventilation System
TASK 24-41-00-861-002-A	Energize the Aircraft Electrical Circuits from the External Power
TASK 24-41-00-861-002-A-01	Energize the Aircraft Electrical Circuits from the APU
TASK 24-41-00-861-002-A-02	Energize the Aircraft Electrical Circuits from Engine 1(2)
TASK 24-41-00-862-002-A	De-energize the Aircraft Electrical Circuits Supplied from the External Power
TASK 24-41-00-862-002-A-01	De-energize the Aircraft Electrical Circuits Supplied from the APU
TASK 24-41-00-862-002-A-02	De-energize the Aircraft Electrical Circuits Supplied from the Engine 1(2)
TASK 32-00-00-860-002-A	Ground Configuration after Flight Configuration with Electrical Power
TASK 32-00-00-860-002-A-01	Ground Configuration after Flight Configuration without Electrical Power

3. Job Set-up
Subtask 32-00-00-860-057-A

A. Aircraft Maintenance Configuration
(1) De-energize the aircraft electrical circuits (Ref. AMM TASK 24-41-00-862-002).
(2) On ELEC panel 35VU, push and release the BAT1 and BAT2 pushbutton switches:

The OFF legends come on.

(3) On ELEC panel 35VU, push the EXT PWR pushbutton switch:

The ON legend goes off
The AVAIL legend comes on.

(4) On panel 2000VU, set the MAINT BUS switch to the OFF position.

4. Procedure
Subtask 32-00-00-865-051-A

A. Open, safety and tag these circuit breakers in this sequence:

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C ALL
49VU	COM NAV/ATC/1	5SH1	G11
** ON A/C NOT FOR ALL
121VU	COM NAV/ATC/2	5SH2	K07
121VU	COM NAV/TCAS	4SG	K10
** ON A/C NOT FOR ALL
121VU	RCDR/DFDR	7TU	K16
** ON A/C ALL
121VU	EIS/F/O/LOUD/SPKR	4WW	P08
49VU	CAPT/LOUD/SPKR	5WW	F10
121VU	COM NAV/RAD ALTM/1	1SA1	K11
121VU	COM NAV/RAD ALTM/2	1SA2	K12
122VU	ANTI ICE/PROBES/1/TAT	1DA1	Z12
122VU	ANTI ICE/PROBES/1/STATIC	5DA1	Z13
49VU	ANTI ICE/PROBES/PITOT/1	3DA1	D02
49VU	ANTI ICE/PROBES/AOA/1	4DA1	D04
49VU	ANTI ICE/PROBES/PHC/1	2DA1	D03
122VU	ANTI ICE/PROBES/2/TAT	1DA2	Y15
122VU	ANTI ICE/PROBES/2/STATIC	5DA2	Y11
122VU	ANTI ICE/PROBES/2/PITOT	3DA2	Y14
122VU	ANTI ICE/PROBES/2/AOA	4DA2	Y13
122VU	ANTI ICE/PROBES/PHC/2	2DA2	Y12
122VU	ANTI ICE/PROBES/3/STATIC	5DA3	Z14
122VU	ANTI ICE/PROBES/3/PITOT	3DA3	Z16
122VU	ANTI ICE/PROBES/3/AOA	4DA3	Z15
122VU	ANTI ICE/PROBES/PHC/3	2DA3	Y16
122VU	ANTI ICE/WINDOWS/L	4DG1	X14
122VU	ANTI ICE/WINDOWS/R	4DG2	W14
123VU	ANTI ICE/L/WHSLD	1DG1	AF10
123VU	ANTI ICE/R/WHSLD	1DG2	AF03
122VU	ANTI ICE/WHC/1	5DG1	X13
122VU	ANTI ICE/WHC/2	5DG2	W13
** ON A/C NOT FOR ALL
2000VU	WASTE WIP-DRAINMAST-FWD	1DU	B06
** ON A/C NOT FOR ALL
2000VU	WASTE WIP-DRAINMAST-FWD	1DU	B03
** ON A/C NOT FOR ALL
2000VU	DRAINMAST-FWD	1DU	B03
** ON A/C ALL
2001VU	WASTE WIP-DRAINMAST-AFT	11DU	E01
** ON A/C NOT FOR ALL
2001VU	WASTE WIP-DRAINMAST-MID	21DU	E02
** ON A/C ALL
122VU	ELEC/GCU/1	2XU1	T26
122VU	ELEC/GCU/2	2XU2	T27
** ON A/C NOT FOR ALL
121VU	HYDRAULIC/G HYD/PUMP ENG1/CTL	1701GK	R35
** ON A/C NOT FOR ALL
49VU	HYDRAULIC/G HYD/PUMP ENG1/CTL	1701GK	H12
** ON A/C NOT FOR ALL
121VU	HYDRAULIC/G HYD/PUMP ENG1/MONG	1702GK	R34
** ON A/C NOT FOR ALL
121VU	HYDRAULIC/G HYD/PUMP ENG1/MONG	1702GK	R33
** ON A/C ALL
123VU	B HYD/ELEC PUMP	2701GJ	AB09
49VU	HYD/HYD PWR/B WARN/& CTL	2702GJ	C12
** ON A/C NOT FOR ALL
122VU	CSAS / CTRL	1HW	U17
** ON A/C ALL
49VU	ENGINE/1 AND 2/IGN/SYS A	1JH	A03
** ON A/C NOT FOR ALL
121VU	ENGINE/IGN/ENG1/SYS A BAT	2JH1	P39
121VU	ENGINE/IGN/ENG2/SYS A BAT	2JH2	P40
** ON A/C ALL
121VU	ENGINE/IGN/ENG1/SYS B	3JH1	P41
121VU	ENGINE/IGN/ENG2/SYS B	3JH2	P42
49VU	ENGINE/1/FADEC A/AND EIU 1	2KS1	A04
49VU	ENGINE/2/FADEC A/AND EIU 2	2KS2	A05
** ON A/C NOT FOR ALL
121VU	ENGINE/ENG1/FADEC B/AND EIU 1	4KS1	R41
** ON A/C NOT FOR ALL
121VU	ENGINE/ENG1/FADEC B/AND EIU 1	4KS1	R40
** ON A/C NOT FOR ALL
121VU	ENGINE/ENG2/FADEC B/AND EIU2	4KS2	Q40
** ON A/C NOT FOR ALL
121VU	ENGINE/ENG2/FADEC B	4KS2	Q40
** ON A/C NOT FOR ALL
121VU	ENGINE/ENG2/FADEC B/AND EIU2	4KS2	R41
** ON A/C NOT FOR ALL
49VU	HF1	1RE1	HA14
** ON A/C NOT FOR ALL
121VU	COM NAV/HF2	1RE2	L13
** ON A/C NOT FOR ALL
121VU	IGGS/CTRL	7YA	N28
** ON A/C NOT FOR ALL
121VU	IGGS/CTRL	7YA	P28
** ON A/C ALL
49VU	AIR COND/CAB/PRESS/CTL1	1HL	D09
122VU	AIR COND/CAB PRESS/CTL/2	2HL	Y22
121VU	APU/ECB/SPLY	1KD	L41
** ON A/C NOT FOR ALL
49VU	COM/CVR/SPLY	2RK	E14
** ON A/C NOT FOR ALL
49VU	COM/CVR/SPLY	23RK	E14
** ON A/C NOT FOR ALL
121VU	T/TISS	2004SG	K07
** ON A/C NOT FOR ALL
49VU	RCDR1 CVR&FDR	40TU	E14
** ON A/C NOT FOR ALL
121VU	RCDR2 CVR&FDR	42TU	K16
** ON A/C NOT FOR ALL
121VU	RCDR2 CVR&FDR	42TU	K39

Subtask 32-00-00-869-053-A

B. Reconfigure the Avionics Compartment Ventilation System

CAUTION: DO NOT PUT THE AIRCRAFT BACK TO THE GROUND CONFIGURATION WHILE THE AVIONICS-COMPARTMENT VENTILATION SYSTEM IS RECONFIGURED. IF YOU DO, THERE IS A RISK THAT THE EQUIPMENT IN THE AVIONICS COMPARTMENT WILL BECOME TOO HOT.

(1) Do the configuration of the avionics-compartment ventilation system (Ref. AMM TASK 21-26-00-860-001).

NOTE: The flight configuration precautions are complete and electrical power can be put back without damage to the anti-ice heat elements.

(2) To put power back to the aircraft, do one of the two steps that follow:
(a) On ELEC panel 35VU, push the EXT PWR pushbutton switch:

The AVAIL legend goes off.

(b) On panel 2000VU, set the MAINT BUS switch to the ON position.
(3) On ELEC panel 35VU, push in the BAT1 and BAT2 pushbutton switches:

The OFF legends go off.

(4) Energize the aircraft electrical circuits (Ref. AMM TASK 24-41-00-861-002).

Subtask 32-00-00-869-054-A

C. Put the Aircraft Back to the Ground Configuration
(1) When you have done the maintenance tasks necessary, do the ground configuration after flight configuration with electrical power procedure (Ref. AMM TASK 32-00-00-860-002).

[Rev.10 from 2021] 2026.04.01 00:39:17 UTC