Installation of the Drain Mast

TASK 30-71-51-400-001-A
Installation of the Drain Mast

WARNING: BE CAREFUL WHEN YOU USE CONSUMABLE MATERIALS. OBEY THE MATERIAL MANUFACTURER'S INSTRUCTIONS AND YOUR LOCAL REGULATIONS.

WARNING: DO NOT GET THE FLUID ON YOUR SKIN OR IN YOUR EYES. IF YOU DO:

FLUSH IT AWAY WITH CLEAN WATER
GET MEDICAL AID.

CAUTION: USE ONLY THE SPECIFIED MATERIALS AND OBEY THE INSTRUCTIONS FROM THE MATERIAL MANUFACTURERS. OTHER MATERIALS CAN CAUSE DAMAGE TO THE SURFACE PROTECTION OF THE COMPONENTS AND THE RELATED AREA.

FIN: 14DU
FIN: 24DU ** ON A/C NOT FOR ALL
FIN: 4DU

1. Reason for the Job
Self explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

REFERENCE	QTY	DESIGNATION
No specific	1	CONTAINER 1 L (1/4 USGAL)
No specific	AR	PLUG - BLANKING
No specific	1	SCRAPER - NON METALLIC
No specific	AR	TIE WRAP(S)
FOR [14DU] (DRAINMAST "F")
No specific	1	ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE
FOR [14DU] (DRAINMAST "F")
FOR [24DU] (DRAINMAST "F")
No specific	1	ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE
FOR [4DU] (DRAINMAST "F")
No specific	1	ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE

B. Consumable Materials

REFERENCE	DESIGNATION
(Material No.03FAB1)	Mineral Oil base Grease-- Vaseline or Petrolatum -
(Material No.04QAB2)	Coating_- Flexible Structure
(Material No.06AAA1)	Polysulfide Sealant_General Purpose Brushable -
(Material No.06AAB1)	Polysulfide Sealant-General Purpose Fillet -
(Material No.06CMD9)	Silicone Adhesive Sealant-General Purpose One part legacy
(Material No.08BAA9)	Non Aqueous Cleaner-General - -
FOR [14DU] (DRAINMAST "F")
FOR [4DU] (DRAINMAST "F")
(Material No.06AAA1)	Polysulfide Sealant_General Purpose Brushable -
FOR [14DU] (DRAINMAST "F")
FOR [24DU]
FOR [4DU] (DRAINMAST "F")
(Material No.06AAA1)	Polysulfide Sealant_General Purpose Brushable -

C. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
FOR [14DU] (DRAINMAST "F")
162DW
FOR [14DU] (DRAINMAST "F")
FOR [24DU] (DRAINMAST "F")
151GF, 162DW
FOR [4DU] (DRAINMAST "F")
131EF
131SF
131CG

D. Expendable Parts

FIG.ITEM	DESIGNATION	IPC-CSN
9	SHIM	AIPC 30-71-51-05-020
11	SEALS	AIPC 30-71-51-05-050

E. Referenced Information

REFERENCE	DESIGNATION
TASK 20-28-00-912-802-A	Electrical Bonding - General Maintenance Procedure
TASK 20-28-00-912-803-A	Bonding Surface Preparation
TASK 24-42-00-861-001-A	Energize the Ground Service Network from the External Power
TASK 24-42-00-862-001-A	De-energize the Ground Service Network Supplied from the External Power
TASK 30-71-00-710-001-A	Operational Test of the Drainmast Ice Protection
TASK 51-76-11-300-001-A	Repair of the Sealing
Drain Mast ** ON A/C NOT FOR ALL
Drain Mast ** ON A/C NOT FOR ALL
Drain Mast ** ON A/C NOT FOR ALL
Drain Mast ** ON A/C NOT FOR ALL
Drain Mast ** ON A/C NOT FOR ALL
Drain Mast - Heater Tube Assembly ** ON A/C NOT FOR ALL
Drain Mast - Heater Tube Assembly ** ON A/C NOT FOR ALL
FOR [14DU] (DRAINMAST "F")
TASK 25-55-12-000-001-A	Removal of the Aft Cargo-Compartment Partition at FR65
TASK 25-55-12-400-001-A	Installation of the Aft Cargo-Compartment Partition at FR65
TASK 52-30-00-860-001-A	Open the FWD or Aft Cargo-Compartment Door with the Yellow Electric Pump
TASK 52-30-00-860-002-A	Close the FWD or Aft Cargo-Compartment Door with the Yellow Electric Pump
TASK 52-30-00-860-003-A	Open the FWD or Aft Cargo-Compartment Door with the Hand Pump
TASK 52-30-00-860-004-A	Close the FWD or Aft Cargo-Compartment Door with the Hand Pump
FOR [14DU] (DRAINMAST "F")
FOR [24DU] (DRAINMAST "F")
TASK 25-55-12-000-001-A	Removal of the Aft Cargo-Compartment Partition at FR65
TASK 52-30-00-860-001-A	Open the FWD or Aft Cargo-Compartment Door with the Yellow Electric Pump
TASK 52-30-00-860-003-A	Open the FWD or Aft Cargo-Compartment Door with the Hand Pump
TASK 53-42-14-000-001-A	Removal of the Aft Cargo-Compartment Floor-Panels Zone 150
FOR [14DU] (DRAINMAST "F")
FOR [4DU] (DRAINMAST "F")
TASK 38-10-00-614-001-A	Pressurization of the Potable Water System from a Ground Air Supply
TASK 38-10-00-614-002-A	Depressurization of the Potable Water System
TASK 38-10-00-614-003-A	Pressurization of the Potable Water System with the Compressor
FOR [14DU] (DRAINMAST "F")
FOR [24DU] (DRAINMAST "F")
FOR [4DU] (DRAINMAST "F")
TASK 38-10-00-614-002-A	Depressurization of the Potable Water System
FOR [4DU] (DRAINMAST "F")
TASK 52-30-00-860-001-A	Open the FWD or Aft Cargo-Compartment Door with the Yellow Electric Pump
TASK 52-30-00-860-002-A	Close the FWD or Aft Cargo-Compartment Door with the Yellow Electric Pump
TASK 52-30-00-860-003-A	Open the FWD or Aft Cargo-Compartment Door with the Hand Pump
TASK 52-30-00-860-004-A	Close the FWD or Aft Cargo-Compartment Door with the Hand Pump
TASK 53-22-14-000-001-A	Removal of the Forward Cargo-Compartment Floor-Panels
TASK 53-22-14-400-001-A	Installation of the Forward Cargo-Compartment Floor-Panels
TASK 53-22-14-400-001-A-01	Installation of the Forward Cargo-Compartment Floor-Panels (Alternative Installation Procedure with the Skyflex Option)

3. Job Set-up
Subtask 30-71-51-860-050-D ** ON A/C NOT FOR ALL

To prevent remaining water from the potable water lines to drain down to the drain mast.

(d) Make sure that the galley faucets are operated to remove any remaining water still in the potable water lines.
(3) FOR [4DU] (DRAINMAST "F")
(a) Make sure that the forward cargo-compartment door is open (Ref. AMM TASK 52-30-00-860-001) (Ref. AMM TASK 52-30-00-860-003).
(b) Make sure that an ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE is in position.
(c) Make sure that cargo-compartment light switch 6LU is set to ON.
(d) Make sure that floor panel 131SF is removed to get access to forward drain mast (4DU) (Ref. AMM TASK 53-22-14-000-001).
(4) FOR [14DU] (DRAINMAST "F")
(a) Make sure that the aft cargo-compartment door is open (Ref. AMM TASK 52-30-00-860-001) (Ref. AMM TASK 52-30-00-860-003).
(b) Make sure that an ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE is in position.
(c) Make sure that cargo-compartment light switch 8LU is set to ON.
(d) Make sure that partition 162DW is removed to get access to aft drain mast (14DU) (Ref. AMM TASK 25-55-12-000-001).

Subtask 30-71-51-860-050-E ** ON A/C NOT FOR ALL

NOTE: The washbasin plug prevents the remaining water in the water lines to flow to the drain mast.

(d) Make sure that the galley faucets are operated to remove the remaining water from the potable water lines.
(3) FOR [4DU] (DRAINMAST "F")
(a) Make sure that the forward cargo-compartment door is open (Ref. AMM TASK 52-30-00-860-001) or (Ref. AMM TASK 52-30-00-860-003).
(b) Make sure that the ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE is in position.
(c) Make sure that CARGO COMPT LIGHT switch 6LU is ON.
(d) Make sure that floor panel 131EF is removed (Ref. AMM TASK 53-22-14-000-001).
(4) FOR [14DU] (DRAINMAST "F")
(a) Make sure that the aft cargo-compartment door is open (Ref. AMM TASK 52-30-00-860-001) or (Ref. AMM TASK 52-30-00-860-003).
(b) Make sure that the ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE is in position.
(c) Make sure that CARGO COMPT LIGHT switch 8LU is ON.
(d) Make sure that partition 162DW is removed (Ref. AMM TASK 25-55-12-000-001).

Subtask 30-71-51-860-050-F ** ON A/C NOT FOR ALL

A. Aircraft Maintenance Configuration
(1) FOR [4DU] (DRAINMAST "F"), [14DU] (DRAINMAST "F")
(a) Make sure the Potable Water System pressure is released (Ref. AMM TASK 38-10-00-614-002).
(b) Make sure the wash basin faucet is operated to remove any remaining water still in the potable water lines.
(c) Make sure the wash basin plug is installed in the wash basin drain hole, to prevent any remaining water still in the potable water lines draining to the drain mast.
(d) Make sure the galley faucets are operated to remove any remaining water still in the potable water lines.
(2) FOR [4DU] (DRAINMAST "F")
(a) Make sure that the FWD cargo-compartment door is open (Ref. AMM TASK 52-30-00-860-001).
(b) Make sure that the CARGO COMP LIGHT switch 6LU is set to ON.
(c) Make sure that the floor panel 131CG is removed to get access to the DRAINMAST-FWD (4DU) (Ref. AMM TASK 53-22-14-000-001).
(3) FOR [14DU] (DRAINMAST "F")
(a) Make sure that an ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE is put in position at the DRAINMAST-AFT (14DU).
(b) Make sure that the AFT cargo-compartment door is open (Ref. AMM TASK 52-30-00-860-001).
(c) Make sure that the CARGO COMP LIGHT switch 8LU is set to ON.
(d) Make sure that the partition 162DW is removed to get access to the DRAINMAST-AFT (14DU).

Subtask 30-71-51-860-050-G ** ON A/C NOT FOR ALL

A. Aircraft Maintenance Configuration
(1) Make sure that the ground service network is energized
(Ref. AMM TASK 24-42-00-861-001).
(2) FOR [4DU] (DRAINMAST "F"), [14DU] (DRAINMAST "F"), [24DU] (DRAINMAST "F")
(a) Make sure that the potable water system is depressurized (Ref. AMM TASK 38-10-00-614-002).
(b) Make sure that the washbasin faucet is operated to remove the remaining water from the potable water lines.
(c) Make sure that the washbasin plug is installed in the washbasin drain hole.
(d) Make sure that the galley faucets are operated to remove the remaining water from the potable water lines.
(3) FOR [4DU] (DRAINMAST "F")
(a) Make sure that the forward cargo-compartment door is open (Ref. AMM TASK 52-30-00-860-001) or (Ref. AMM TASK 52-30-00-860-003).
(b) Make sure that the ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE is in position.
(c) Make sure that cargo-compartment light switch 6LU is set to the ON position.
(d) Make sure that floor panel 131EF is removed (Ref. AMM TASK 53-22-14-000-001).
(4) FOR [14DU] (DRAINMAST "F"), [24DU] (DRAINMAST "F")
(a) Make sure that the aft cargo-compartment door is open (Ref. AMM TASK 52-30-00-860-001) or (Ref. AMM TASK 52-30-00-860-003).
(b) Make sure that the ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE is in position.
(c) Make sure that cargo-compartment light switch 8LU is set to the ON position.
(d) Make sure that partition 162DW is removed (Ref. AMM TASK 25-55-12-000-001).
(e) Make sure that floor panel 151GF is removed (Ref. AMM TASK 53-42-14-000-001).

Subtask 30-71-51-865-064-A

B. Make sure that this(these) circuit breaker(s) is(are) open, safetied and tagged:

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
2000VU	WASTE WIP-DRAINMAST-FWD	1DU	B06
** ON A/C NOT FOR ALL
2000VU	DRAINMAST-FWD	1DU	B03
** ON A/C NOT FOR ALL
2000VU	WASTE WIP-DRAINMAST-FWD	1DU	B03
2000VU	WASTE WIP-HEATER-CTL	9DU	B02
2000VU	WASTE WIP-HEATER-LINE	8DU	B01
** ON A/C NOT FOR ALL
2000VU	WASTE WIP-HEATER-CTL	9DU	B05
2000VU	WASTE WIP-HEATER-LINE	8DU	B04
** ON A/C NOT FOR ALL
2001VU	POT/WASTE WIP-HEATER-CTL	32DW	D02
** ON A/C NOT FOR ALL
2001VU	WASTE WIP-HEATER-LINE	31DU	E04
** ON A/C ALL
2001VU	WASTE WIP-DRAINMAST-AFT	11DU	E01
** ON A/C NOT FOR ALL
2001VU	POT/WASTE WIP HEATER CTL	32DW	D02
2001VU	WASTE WIP-HEATER-LINE	22DU	E04
2001VU	WASTE WIP-HEATER-CTL	10DU	E03
2001VU	WASTE WIP-DRAINMAST-MID	21DU	E02

Subtask 30-71-51-140-050-A ** ON A/C NOT FOR ALL

C. Preparation for Installation
(1) Remove the used sealant with a SCRAPER - NON METALLIC from the fuselage.
(2) Clean the component interface and/or the adjacent area with Non Aqueous Cleaner-General - - (Material No.08BAA9) .
(3) Do an inspection of the component interfaces and the adjacent area.
(4) Make sure that no signs of paint, corrosion or sealant are visible on the screw holes of the drain mast.

NOTE: The electrical bonding of the drain mast is applied by the installation of conductive attachment screws.

Subtask 30-71-51-140-050-B ** ON A/C NOT FOR ALL

C. Preparation for Installation

Drain Mast ** ON A/C NOT FOR ALL

(1) Remove the used sealant with a SCRAPER - NON METALLIC from the fuselage.
(2) Clean the component interfaces and the adjacent area with Non Aqueous Cleaner-General - - (Material No.08BAA9) .
(3) Do an inspection of the component interfaces and the adjacent area.
(4) Make sure that no signs of paint, corrosion or sealant are visible on the screw holes of the drain mast.

NOTE: The electrical bonding of the drain mast is applied by the installation of conductive attachment screws.

(5) Apply Mineral Oil base Grease-- Vaseline or Petrolatum - (Material No.03FAB1) to the drain mast pipe (6) and the extensible bellow (5).

4. Procedure
Subtask 30-71-51-560-050-A

A. Preparation for Replacement

Drain Mast - Heater Tube Assembly ** ON A/C NOT FOR ALL

(1) Disassembly of the Drain Mast:
(a) Do a visual inspection of the shim (9) to make sure that there is no damage.
(b) If damaged, remove the shim (9) from the drain mast (1) and discard it.
(c) Remove the screws (10).
(d) Carefully remove the heater tube assembly (8) from the drain mast (1).
(e) Remove and discard the seals (11).
(f) Make sure that the nut clips (12) are kept in the drain mast (1).
(2) Assembly of the Drain Mast:
(a) Put the new AIPC 30-71-51-05-050 SEALS (11) in its installation position.
(b) Carefully insert the heater tube assembly (8) into the drain mast (1).
(c) Safety the heater tube assembly with the screws (10).
(d) Install the AIPC 30-71-51-05-020 SHIM (9):

NOTE: You can install the used shim again if you do not find damage on it.

1 Do an inspection of the component interfaces and the adjacent area.
2 Apply Silicone Adhesive Sealant-General Purpose One part legacy (Material No.06CMD9) to the surface of the shim (9) and the related surfaces of the drain mast (1).
3 Put the shim (9) on the related surface of the drain mast (1). Apply pressure on the shim (9) for one minute to cure the adhesive bond.
4 Let the adhesive dry for a minimum of three hours.

Subtask 30-71-51-420-050-A ** ON A/C NOT FOR ALL

B. Installation of the Drain Mast

Drain Mast ** ON A/C NOT FOR ALL

(1) Remove the CAP-BLANKING from each electrical connector and receptacle.
(2) Prepare the surface of the bonding point(s)
(Ref. AMM TASK 20-28-00-912-803).
(3) Put the drain mast (1) in position on the opening of the fuselage.

CAUTION: MAKE SURE THAT ELECTRICAL CONNECTORS ARE CLEAN WHEN YOU CONNECT THEM. THE CONTAMINATION OF ELECTRICAL CONNECTORS CAN CAUSE DAMAGE TO THE EQUIPMENT.

(4) Connect the electrical connector (3) to the holder (7).
(5) Remove the PLUG-BLANKING from each disconnected line end.

CAUTION: BE VERY CAREFUL WHEN YOU REMOVE/INSTALL THE BELLOWS FROM /TO THE DRAIN MAST PIPE. IF YOU CAUSE DAMAGE TO THE BELLOWS YOU MUST REPLACE IT. TO REPLACE THE BELLOWS IT IS NECESSARY TO REMOVE THE CARGO FLOOR PANELS FOR ACCESS.

CAUTION: DO NOT USE TOOLS TO REMOVE/INSTALL THE BELLOWS FROM/TO THE DRAIN MAST PIPE. YOU CAN CAUSE DAMAGE TO THE DRAIN MAST PIPE VERY EASILY. IF YOU CAUSE DAMAGE TO THE DRAIN MAST PIPE, YOU MUST INSTALL A NEW DRAIN MAST.

(6) Align the drain mast pipe (6) with the extensible bellow (5).
(7) Connect the extensible bellow (5) to the drain mast pipe (6).
(8) Slowly and carefully pull the extensible bellow (5) above the drain mast pipe (6).
(9) Install the clamp (4) on the extensible bellow (5).
(10) Make sure that the screw of the clamp (4) is in its correct installation position between:

The drain mast pipe (6) and the holder (7).

(11) Tighten the screw of the clamp (4).
(12) Hang the drain mast (1).
(13) Do a leak test as follows:
(a) Put the CONTAINER 1 L (1/4 USGAL) below the drain mast (1) to collect the water.
(b) Put the PLUG - BLANKING on the outlet of the drain mast (1).
(c) In the cabin, remove the washbasin plug from the related washbasin drain hole and stow it.
(d) Fill the related washbasin that is connected to the applicable drain mast unit with half liter of water.
(e) Do a visual leak check of:

The drain mast (1)
The extensible bellow (5)
The related water tubing of the aircraft drain mast.

(f) Make sure that there are no leaks.
(g) Remove the PLUG - BLANKING from the outlet of the drain mast (1).
(h) Remove the CONTAINER 1 L (1/4 USGAL).
(14) Install the drain mast as follows:
(a) Carefully put the drain mast (1) in position on the opening of the aircraft structure.
(b) Install the screws (2) on the drain mast (1).
(c) Tighten the screws (2).
(d) Do the electrical resistance measurement and the final protection of the bonding point(s)
(Ref. AMM TASK 20-28-00-912-802).
(e) Apply Polysulfide Sealant-General Purpose Fillet - (Material No.06AAB1) to the interfaces of the drain mast (1) (Ref. AMM TASK 51-76-11-300-001).
(f) Make sure that the shape of the full sealant around the drain mast (1) is smooth.
(g) Let the sealant cure.

NOTE: There are different cure times for different sealant materials. You can refer to the applicable Technical Data Sheet (TDS) of the used sealant for the correct cure time.

(h) Make sure that the applied sealant is fully cured.
(i) FOR [4DU] (DRAINMAST "F"), [14DU] (DRAINMAST "F")
Apply Polysulfide Sealant_General Purpose Brushable - (Material No.06AAA1) to the heads of the screws.
(j) Apply Coating_- Flexible Structure (Material No.04QAB2) to the sealant around the drain mast (1) and the heads of the screws.

NOTE: After you apply Polysulfide Sealant_General Purpose Brushable - (Material No.06AAA1) , it is recommended that you wait for approximately 3 hours before you apply Coating_- Flexible Structure (Material No.04QAB2) . The curing time is shorter when the ambient temperature is higher and longer when the temperature is lower.

Subtask 30-71-51-420-050-B ** ON A/C NOT FOR ALL

B. Installation of the Drain Mast
(1) Prepare the surface of the bonding point(s)
(Ref. AMM TASK 20-28-00-912-803).
(2) Install the drain mast (1) with the screws (2).
(3) Tighten the screws (2).
(4) Do the electrical resistance measurement and the final protection of the bonding point(s)
(Ref. AMM TASK 20-28-00-912-802).
(5) Remove the PLUG-BLANKING from each disconnected line end.

(6) Connect the sleeve (5) to the pipe end of the drain mast (1).

NOTE: The sleeve ends are on the color markings.

(7) Tighten the clamps (4).
(8) Put the insulation on the pipe end (3).
(9) Remove the CAP-BLANKING from each electrical connector and receptacle.

CAUTION: MAKE SURE THAT ELECTRICAL CONNECTORS ARE CLEAN WHEN YOU CONNECT THEM. THE CONTAMINATION OF ELECTRICAL CONNECTORS CAN CAUSE DAMAGE TO THE EQUIPMENT.

(10) Connect the electrical connector (6).
(11) Attach the electrical wires with the TIE WRAP(S) to the bracket.
(12) Apply Polysulfide Sealant-General Purpose Fillet - (Material No.06AAB1) to the interfaces of the drain mast (1) (Ref. AMM TASK 51-76-11-300-001).
(13) Make sure that the shape of the full sealant around the drain mast (1) is smooth.
(14) Let the sealant cure.

NOTE: There are different cure times for different sealant materials. You can refer to the applicable Technical Data Sheet (TDS) of the used sealant for the correct cure time.

(15) Make sure that the applied sealant is fully cured.
(16) FOR [4DU] (DRAINMAST "F"), [14DU] (DRAINMAST "F"), [24DU]
Apply Polysulfide Sealant_General Purpose Brushable - (Material No.06AAA1) to the heads of the screws.
(17) Apply Coating_- Flexible Structure (Material No.04QAB2) to the sealant around the drain mast and the heads of the screws.

Subtask 30-71-51-420-050-C ** ON A/C NOT FOR ALL

B. Installation of the Drain Mast
(1) Remove the CAP-BLANKING from each electrical connector and receptacle.
(2) Prepare the surface of the bonding point(s)
(Ref. AMM TASK 20-28-00-912-803).
(3) Put the drain mast (1) in position on the opening of the fuselage.

CAUTION: MAKE SURE THAT ELECTRICAL CONNECTORS ARE CLEAN WHEN YOU CONNECT THEM. THE CONTAMINATION OF ELECTRICAL CONNECTORS CAN CAUSE DAMAGE TO THE EQUIPMENT.

(4) Connect the electrical connector (3) to the holder (7).
(5) Remove the PLUG-BLANKING from each disconnected line end.

The drain mast pipe (6) and the holder (7).

The drain mast (1)

The extensible bellow (5)

The related water tubing of the aircraft drain mast.

NOTE: There are different cure times for different sealant materials. You can refer to the applicable Technical Data Sheet (TDS) of the used sealant for the correct cure time.

(h) Make sure that the applied sealant is fully cured.
(i) FOR [4DU] (DRAINMAST "F"), [14DU] (DRAINMAST "F"), [24DU] (DRAINMAST "F")
Apply Polysulfide Sealant_General Purpose Brushable - (Material No.06AAA1) to the heads of the screws.
(j) Apply Coating_- Flexible Structure (Material No.04QAB2) to the sealant around the drain mast (1) and the heads of the screws.

Subtask 30-71-51-865-065-A

C. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
2000VU	WASTE WIP-DRAINMAST-FWD	1DU	B06
** ON A/C NOT FOR ALL
2000VU	DRAINMAST-FWD	1DU	B03
** ON A/C NOT FOR ALL
2000VU	WASTE WIP-DRAINMAST-FWD	1DU	B03
2000VU	WASTE WIP-HEATER-CTL	9DU	B02
2000VU	WASTE WIP-HEATER-LINE	8DU	B01
** ON A/C NOT FOR ALL
2000VU	WASTE WIP-HEATER-CTL	9DU	B05
2000VU	WASTE WIP-HEATER-LINE	8DU	B04
** ON A/C NOT FOR ALL
2001VU	POT/WASTE WIP-HEATER-CTL	32DW	D02
** ON A/C NOT FOR ALL
2001VU	WASTE WIP-HEATER-LINE	31DU	E04
** ON A/C ALL
2001VU	WASTE WIP-DRAINMAST-AFT	11DU	E01
** ON A/C NOT FOR ALL
2001VU	POT/WASTE WIP HEATER CTL	32DW	D02
2001VU	WASTE WIP-HEATER-LINE	22DU	E04
2001VU	WASTE WIP-HEATER-CTL	10DU	E03
2001VU	WASTE WIP-DRAINMAST-MID	21DU	E02

Subtask 30-71-51-710-051-A

D. Do the operational test of the drain-mast ice protection (Ref. AMM TASK 30-71-00-710-001).

5. Close-up
Subtask 30-71-51-410-053-D ** ON A/C NOT FOR ALL

A. Close Access
(1) FOR [4DU] (DRAINMAST "F"), [14DU] (DRAINMAST "F")
(a) Make sure that the work area is clean and clear of tools and other items.
(b) Pressurize the potable water system (Ref. AMM TASK 38-10-00-614-001) (Ref. AMM D/O 38-10-00-61).
(c) Remove the wash basin plug from the wash-basin drain hole and stow.
(2) FOR [4DU] (DRAINMAST "F")
(a) Install floor panel 131SF in the forward cargo compartment (Ref. AMM TASK 53-22-14-400-001).
(b) Set cargo-compartment light switch 6LU to OFF.
(c) Remove the access platform(s).
(d) Close the forward cargo-compartment door (Ref. AMM TASK 52-30-00-860-002) (Ref. AMM TASK 52-30-00-860-004).
(3) FOR [14DU] (DRAINMAST "F")
(a) Install partition 162DW in the aft cargo compartment (Ref. AMM TASK 25-55-12-400-001).
(b) Set cargo-compartment light switch 8LU to OFF.
(c) Remove the access platform(s).
(d) Close the aft cargo-compartment door (Ref. AMM TASK 52-30-00-860-002) (Ref. AMM TASK 52-30-00-860-004).

Subtask 30-71-51-410-053-E ** ON A/C NOT FOR ALL

A. Close Access
(1) FOR [4DU] (DRAINMAST "F"), [14DU] (DRAINMAST "F")
(a) Make sure that the work area is clean and clear of tools and other items.
(b) Do the pressurization of the potable water system (Ref. AMM TASK 38-10-00-614-001) or (Ref. AMM TASK 38-10-00-614-003).
(c) Remove the washbasin plug from the washbasin drain hole and stow it.
(2) FOR [4DU] (DRAINMAST "F")
(a) Install floor panel 131EF (Ref. AMM TASK 53-22-14-400-001).
(b) Set CARGO COMPT LIGHT switch 6LU to OFF.
(c) Remove the access platform(s).
(d) Close the forward cargo-compartment door (Ref. AMM TASK 52-30-00-860-002) or (Ref. AMM TASK 52-30-00-860-004).
(3) FOR [14DU] (DRAINMAST "F")
(a) Install partition 162DW (Ref. AMM TASK 25-55-12-400-001).
(b) Set CARGO COMPT LIGHT switch 8LU to OFF.
(c) Remove the access platform(s).
(d) Close the aft cargo-compartment door (Ref. AMM TASK 52-30-00-860-002) or (Ref. AMM TASK 52-30-00-860-004).

Subtask 30-71-51-410-053-F ** ON A/C NOT FOR ALL

A. Close Access
(1) FOR [4DU] (DRAINMAST "F"), [14DU] (DRAINMAST "F")
(a) Make sure that the work area is clean and clear of tools and other items.
(b) Pressurize the Potable Water System (Ref. AMM TASK 38-10-00-614-001).
(c) Remove the wash basin plug from the wash basin drain hole and stow.
(2) FOR [4DU] (DRAINMAST "F")
(a) Install the floor panel 131CG in the FWD cargo compartment (Ref. AMM TASK 53-22-14-400-001).
(b) Set the CARGO COMPT LT switch 6LU to OFF.
(c) Close the FWD cargo-compartment door (Ref. AMM TASK 52-30-00-860-002).
(3) FOR [14DU] (DRAINMAST "F")
(a) Install the partition 162DW in the AFT cargo compartment.
(b) Set the CARGO COMPT LT switch 8LU to OFF.
(c) Close the AFT cargo-compartment door (Ref. AMM TASK 52-30-00-860-002).
(d) Remove the access platform.

Subtask 30-71-51-862-051-A

B. De-energize the ground service network
(Ref. AMM TASK 24-42-00-862-001).

[Rev.10 from 2021] 2026.04.01 00:32:00 UTC