Removal of the Inboard Flap Tab

TASK 27-54-61-000-004-A
Removal of the Inboard Flap Tab

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.

WARNING: MAKE SURE THAT THE GROUND SAFETY-LOCKS ARE IN POSITION ON THE LANDING GEAR. THIS WILL PREVENT UNWANTED MOVEMENT OF THE LANDING GEAR, AND THUS POSSIBLE INJURY TO PERSONS AND DAMAGE TO THE AIRCRAFT AND/OR EQUIPMENT.

CAUTION: BE CAREFUL WHEN YOU DO MAINTENANCE TASKS ON THE WING TRAILING EDGE:

DO NOT CAUSE DAMAGE TO THE ELECTRICAL CABLE RACEWAYS.
DO NOT CAUSE DAMAGE TO THE ELECTRICAL CABLE INSTALLATIONS.
MAKE SURE THAT THE ELECTRICAL CABLES ARE INSTALLED CORRECTLY. INCORRECT INSTALLATION CAN CAUSE DAMAGE.

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

REFERENCE	QTY	DESIGNATION
No specific	AR	ACCESS PLATFORM 3M (10 FT)- ADJUSTABLE
No specific	AR	SAFETY BARRIER(S)
No specific	AR	SAFETY CLIP - CIRCUIT BREAKER
No specific	AR	SUPPORT STRUCTURE - FLAP
No specific	AR	WARNING NOTICE(S)
98D27504114000	2	DISTANCE GAUGE

B. Referenced Information

REFERENCE	DESIGNATION
TASK 27-50-00-866-009-A	Retraction of the Flaps on the Ground
TASK 27-50-00-866-009-A-01	Retraction of the Flaps/Slats on the Ground
TASK 27-54-61-000-003-A	Removal of the Inboard Double-Slotted Flap
TASK 27-54-61-400-003-A	Installation of the Inboard Double-Slotted Flap
TASK 57-55-11-000-005-A	Removal of the Inboard and Outboard-Flap Tab Hinge-Fairings
TASK 57-55-11-010-001-A	To Lower the Flap Track No. 2 Movable Fairing for Access
Inboard Tab Hinge at the 1B Position - Location and Detail
Inboard Tab Hinge at the 1A Position - Location and Detail
Inboard Tab Hinge at the Track 2 Position - Location and Detail

3. Job Set-up
Subtask 27-54-61-941-057-A ** ON A/C NOT FOR ALL

A. Safety Precautions
(1) Put the SAFETY BARRIER(S) in position.
(2) Put a WARNING NOTICE(S) in position in the cockpit to tell persons not to operate the flight controls.
(3) Put a WARNING NOTICE(S) on panel 400VU to tell persons not to operate the landing gear.

Subtask 27-54-61-860-055-A ** ON A/C NOT FOR ALL

B. Aircraft Maintenance Configuration

WARNING: MAKE SURE THAT THE TRAVEL RANGES OF THE FLIGHT CONTROLS SURFACES ARE CLEAR. MOVEMENT OF FLIGHT CONTROLS CAN CAUSE INJURY TO PERSONS AND/OR DAMAGE TO EQUIPMENT.

(1) Make sure that the flaps are in the fully retracted position (Ref. AMM TASK 27-50-00-866-009).
(2) Make sure that the 98D27803000000 LOCKING TOOL-FLAP SLAT LEVER,INT. POSITION is on the slat/flap control lever.

Subtask 27-54-61-865-054-A ** ON A/C NOT FOR ALL

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

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
49VU	FLIGHT CONTROLS/FLP/CTL AND MONG/SYS1	6CV	B07
** ON A/C NOT FOR ALL
49VU	FLIGHT CONTROLS/FLP/CTL AND MONG/SYS1	6CV	B02
** ON A/C NOT FOR ALL
121VU	FLIGHT CONTROLS/FLP/CTL AND/MONG/SYS2	8CV	Q21

Subtask 27-54-61-010-053-A ** ON A/C NOT FOR ALL

D. Get Access
(1) Put the ACCESS PLATFORM 3M (10 FT)- ADJUSTABLE in position below the applicable inboard flap tab.
(2) Remove the fairings from the tab hinges at the 1A and 1B positions (Ref. AMM TASK 57-55-11-000-005).
(3) Lower the flap track No. 2 movable fairing (Ref. AMM TASK 57-55-11-010-001).

4. Procedure
Subtask 27-54-61-020-057-A ** ON A/C NOT FOR ALL

A. Removal of the Inboard Flap Tab

Inboard Tab Hinge at the 1B Position - Location and Detail ** ON A/C NOT FOR ALL

(1) Install the 98D27504114000 DISTANCE GAUGE on the flap and tab hinges at the hinge 1A and the track 2 positions (Ref. AMM TASK 27-54-61-000-003).
(2) Disconnect the tab at the hinge 1B position:
(a) Disconnect the rear strut (5):
1 Remove and discard the cotter pin (8).
2 Remove the nut (9) and the washer (7).
3 Remove the bolt (1), the washer (2) and disconnect the rear strut (5).
4 Remove the sliding bush (6).
(3) Disconnect the forward strut (18):
(a) Remove and discard the cotter pin (15).
(b) Remove the nut (14) and the washer (13).
(c) Remove the bolt (10), the washer (11) and disconnect the forward strut (18).
(d) Remove the sliding bush (12).
(4) Disconnect the tab at the hinge 1A position:

Inboard Tab Hinge at the 1A Position - Location and Detail ** ON A/C NOT FOR ALL

(a) Disconnect the tab drive control-rod (45):
1 Remove and discard the cotter pin (46).
2 Remove the nut (47) and the washer (48).
3 Remove the bolt (42), the washer (43) and disconnect the tab drive control-rod (45).
4 Remove the sliding bush (44).
(5) Disconnect the forward strut (39):
(a) Remove and discard the cotter pin (34).
(b) Remove the nut (35) and the washer (36).
(c) Remove the bolt (40), the washer (41) and disconnect the forward strut (39).
(6) Remove the nut (28), the washer (29), the bonding strap (30), the washers (31) and (32) and the bolt (33).
(7) Disconnect the rear strut (24):
(a) Remove and discard the cotter pin (19).
(b) Remove the nut (20) and the washer (21).
(c) Remove the bolt (26), the washer (25) and disconnect the rear strut (24).
(d) Remove the sliding bush (27).
(8) Disconnect the tab at the track 2 position:

Inboard Tab Hinge at the Track 2 Position - Location and Detail ** ON A/C NOT FOR ALL

(a) Remove the nut (58), the washer (59), the bolt (61) and disconnect the bonding strap (60).
(b) Disconnect the tab drive control-rod (73) from the flap track carriage (Ref. AMM TASK 27-54-61-000-003).
(9) Disconnect the rear strut (53):
(a) Remove and discard the cotter pin (56).
(b) Remove the nut (57) and the washer (55).
(c) Remove the bolt (49), the washer (50) and disconnect the rear strut (53).
(d) Remove the sliding bush (54).
(10) Remove the eccentric bolt (69):

NOTE: Write down the position of the punch marks so that the eccentric bolt (69) can be installed in the same position.

(a) Remove the nut (67), the washer (66) and the screw (65).
(b) Remove and discard the cotter pin (62).
(c) Remove the nut (63) and the washer (64).
(d) Remove the toothplate (68) and the eccentric bolt (69).

CAUTION: HOLD THE TAB ALONG THE FULL LENGTH OF THE TRAILING EDGE. THIS WILL PREVENT DAMAGE TO THE TAB WHEN YOU MOVE IT.

(11) Remove the tab from the flap:

NOTE: The weight of the inboard tab is 80 kg (176 lb).

(a) Remove the 98D27504114000 DISTANCE GAUGE from the hinges at the 1A and track 2 positions (Ref. AMM TASK 27-54-61-400-003).

CAUTION: MAKE SURE THAT THE DISCONNECTED PARTS DO NOT TOUCH AND/OR CATCH THE ADJACENT STRUCTURE WHEN YOU MOVE THE TAB. THIS WILL PREVENT DAMAGE TO THE FLAP.

(b) Carefully and slowly lift the tab from the flap.

CAUTION: MAKE SURE THAT THE SUPPORT STRUCTURE IS CLEAN AND DOES NOT HAVE ANY SHARP POINTS.

(12) Move the tab and put it onto the SUPPORT STRUCTURE - FLAP.

Subtask 27-54-61-020-062-A ** ON A/C NOT FOR ALL

B. Removal of the Tab Drive Control-Rod
(1) If a replacement tab is to be installed, remove the tab drive control-rod (73) from the tab at the track 2 position.

Inboard Tab Hinge at the Track 2 Position - Location and Detail ** ON A/C NOT FOR ALL

(2) At the track 2 position:
(a) Remove and discard the cotter pin (70).
(b) Remove the nut (71) and the washer (72).
(c) Remove the bolt (74), the washer (75) and remove the tab drive control-rod (73).

[Rev.10 from 2021] 2026.03.31 23:54:46 UTC