Removal of the Access Panel

TASK 57-27-11-000-002-A
Removal of the Access Panel

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 remove the access panels 540HB, 540JB, 540KB, 540LB, 540MB, 540NB, 540PB, 540QB, 540RB, 550AB, 550BB, 550CB, 550DB, 560AB, 640HB, 640JB, 640KB, 640LB, 640MB, 640NB, 640PB, 640QB, 640RB, 650AB, 650BB, 650CB, 650DB, 660AB.
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

REFERENCE	QTY	DESIGNATION
No specific	AR	ACCESS PLATFORM 4M (13 FT)
No specific	AR	COVER - PROTECTION
No specific	1	LABEL - IDENTIFICATION
No specific	AR	SAFETY BARRIER(S)
No specific	AR	SAFETY CLIP - CIRCUIT BREAKER
No specific	AR	WARNING NOTICE(S)
98A53003500000	1	REMOVAL TOOL OF PHILLIPS TORQUE
98A57304002000	1	EXTRACTION, MANHOLE BOLT
98D27803500001	1	LOCKING TOOL ZERO POS

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
540NB, 540PB, 640NB, 640PB

C. Referenced Information

REFERENCE	DESIGNATION
TASK 28-10-00-910-001-A	Safety Procedures When You Do Work in a Fuel Tank
TASK 28-10-00-910-002-A	Access to the Fuel Tanks and the Work Areas
TASK 28-12-41-000-001-A	Removal of the Overpressure Protector
TASK 28-12-47-000-001-A	Removal of the NACA Vent Intake
TASK 28-25-00-650-001-A	Pressure Defuel
TASK 28-25-00-650-003-A	To Drain Remaining Fuel from the Wing Tanks and the Center Tank
TASK 28-25-00-650-003-A-01	To Drain Remaining Fuel from the Wing Tanks and the Center Tank
TASK 57-55-11-000-001-A	Removal of the Flap Track Fairings Nos. 2, 3 and 4
TASK 57-55-11-000-004-A	Removal of the Flap Track Fairings Nos. 2, 3 and 4
Access Panels - Rib 13 to the Closing Rib ** ON A/C NOT FOR ALL
Access Panels - Rib 13 to the Closing Rib ** ON A/C NOT FOR ALL
Access Panels - Rib 13 to the Closing Rib, Bolt Removal/Tightening Sequence ** ON A/C NOT FOR ALL
Access Panels - Rib 13 to the Closing Rib, Bolt Removal/Tightening Sequence ** ON A/C NOT FOR ALL

3. Job Set-up
Subtask 57-27-11-941-051-A

A. Safety Precautions

WARNING: BEFORE YOU DO WORK IN OR NEAR A FUEL TANK, MAKE SURE THAT YOU OBEY ALL THE SAFETY PROCEDURES. THIS WILL PREVENT INJURY TO PERSONS AND/OR DAMAGE TO THE AIRCRAFT.

(1) You must obey the fuel safety procedures when you do work in a fuel tank, (Ref. AMM TASK 28-10-00-910-001). and (Ref. AMM TASK 28-10-00-910-002).
(2) As necessary, use the applicable SAFETY BARRIERS, specified by the operator's instructions and your local regulations.
(3) Install the 98D27803500001 LOCKING TOOL ZERO POS on the flap/slat control lever.
(4) Put WARNING NOTICE(S) in the cockpit to tell persons not to operate the flaps or slats.

Subtask 57-27-11-860-055-A

B. Aircraft Maintenance Configuration
(1) Defuel the applicable fuel tank (Ref. AMM TASK 28-25-00-650-001).
(2) Drain the remaining fuel from the applicable fuel tank (Ref. AMM TASK 28-25-00-650-003).

Subtask 57-27-11-865-051-A

C. Open, safety and tag this(these) circuit breaker(s):

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
49VU	FUEL/XFR VALVE1/WING/R	2QP	A11
49VU	FUEL/XFR VALVE1/WING/L	1QP	A10
** ON A/C ALL
49VU	FUEL/X FEED/VALVE/MOT1	2QE	A12
** ON A/C NOT FOR ALL
121VU	FUEL/CTR TK/PUMP2 SPLY	30QA	P26
121VU	FUEL/CTR TK/PUMP1 SPLY	29QA	P23
** ON A/C NOT FOR ALL
121VU	FUEL/RFL/DFL/SPLY	2QU	L24
121VU	FUEL/RFL/DFL/XFR/DEFUEL/VALVE	1QU	L23
** ON A/C ALL
121VU	FUEL/L WING TK/PUMP2 SPLY	7QA	N26
121VU	FUEL/L WING TK/PUMP1 SPLY	1QA	N23
121VU	FUEL/R WING TK/PUMP2 SPLY	8QA	Q26
121VU	FUEL/R WING TK/PUMP1 SPLY	2QA	Q23
** ON A/C NOT FOR ALL
121VU	FUEL/CTR TK/AUTO/CTL	3QL	R27
121VU	FUEL/CTR TK/L&R XFR/CTL & IND	2QL	R26
121VU	FUEL/CTR TK/L&R XFR/CTL & IND	1QL	R25
** ON A/C NOT FOR ALL
121VU	FUEL/RFL/DFL/SPLY	2QU	L23
121VU	FUEL/RFL/DFL/XFR/DEFUEL/VALVE	1QU	L22

Subtask 57-27-11-010-055-B ** ON A/C NOT FOR ALL

D. Get Access
(1) Put the ACCESS PLATFORM 4M (13 FT) in position below the applicable access panel at zone 540(640).
(2) For panel 540NB ( 640NB) or 540PB ( 640PB):

Remove the forward and aft fixed fairings from flap track No. 4 (Ref. AMM TASK 57-55-11-000-001).

(3) For panel 540PB ( 640PB):

Remove the bolts (13) and the flap-track fairing support-bracket (12).

Subtask 57-27-11-010-055-C ** ON A/C NOT FOR ALL

D. Get Access
(1) Put the ACCESS PLATFORM 4M (13 FT) below the applicable access panel, zone 540(640).
(2) For panels 540NB(640NB) or 540PB(640PB):

remove the forward and aft fixed fairings of the No. 4 flap track (Ref. AMM TASK 57-55-11-000-004).

4. Procedure
Subtask 57-27-11-020-051-A ** ON A/C NOT FOR ALL

CAUTION: YOU MUST REMOVE AND INSTALL THE BOLTS IN THE SPECIFIED SEQUENCE. THIS WILL PREVENT DAMAGE TO THE ACCESS PANEL.

A. Removal of the Access Panel

Access Panels - Rib 13 to the Closing Rib, Bolt Removal/Tightening Sequence ** ON A/C NOT FOR ALL

NOTE: If you cannot remove the bolts (10) easily, use the 98A53003500000 REMOVAL TOOL OF PHILLIPS TORQUE or the 98A57304002000 EXTRACTION, MANHOLE BOLT.

(1) Remove the bolts (10) in the sequence AF thru A.

NOTE: The access panels (11) do not all have the same quantity of the bolts (10), but the sequence of removal is the same.

(2) Carefully remove the access panel (11).
(3) Identify the access panel (11) with a LABEL - IDENTIFICATION.
(4) For the access panel 540RB(640RB):

put a COVER - PROTECTION around the magnetic level indicator.

(5) For the access panel 540HB(640HB):

put a COVER - PROTECTION around the pressure relief outlet.

(6) For the access panel 550CB(650CB):

put a COVER - PROTECTION around the overpressure protector.

NOTE: If it is necessary to remove the overpressure protector from the access panel 550CB(650CB), refer to the (Ref. AMM TASK 28-12-41-000-001).

(7) For the access panel 550AB(650AB):

remove the NACA vent intake (Ref. AMM TASK 28-12-47-000-001).

(a) Put a COVER - PROTECTION around the NACA vent intake.

Subtask 57-27-11-020-051-B ** ON A/C NOT FOR ALL