Removal of the Slat Tracks 1 thru 4

TASK 27-84-61-000-001-A
Removal of the Slat Tracks 1 thru 4

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: THIS PART IS A REMOVABLE STRUCTURAL COMPONENT (RSC), WHICH CAN BE MOVED BETWEEN AIRCRAFT. THUS IT CAN HAVE DIFFERENT OPERATION CONDITIONS AND A DIFFERENT LIFE RECORD (FLIGHT HOURS/FLIGHT CYCLES/CALENDAR) FROM THE AIRCRAFT IT IS INSTALLED ON OR REMOVED FROM. THE OPERATOR IS RESPONSIBLE FOR THE SPECIFIC TRACKING AND CONTINUED AIRWORTHINESS OF REMOVABLE STRUCTURAL COMPONENTS. INCORRECT MAINTENANCE OF THESE COMPONENTS CAN CAUSE A RISK FOR THE FLIGHT SAFETY.

ZONE: 510
ZONE: 610

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	SAFETY BARRIER(S)
No specific	AR	SAFETY CLIP - CIRCUIT BREAKER
No specific	AR	WARNING NOTICE(S)
98D27804014000	1	TOOL-BACKSTOP SLAT (TRACKS 1, 2, 3, AND 4)

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
510	LEFT WING SLATS
610	RIGHT WING SLATS
521AB, 521BB, 521CB, 521EB, 621AB, 621BB, 621CB, 621EB

C. Referenced Information

REFERENCE	DESIGNATION
TASK 27-84-48-000-001-A	Removal of the Type A Actuators
TASK 27-84-63-000-001-A	Removal of the No. 1 Slat
TASK 27-84-69-000-001-A	Removal of the Closing Plates for the Slat Tracks 1 thru 12
TASK 32-00-00-481-001-A	Installation of the Safety Devices on the Landing Gears
TASK 57-41-37-000-004-A	Removal of the Pressure Relief Panels
TASK 57-41-37-000-005-A	Removal of the NACA Duct Panel
No. 1 Slat - Location and Detail

3. Job Set-up
Subtask 27-84-61-941-055-A

A. Safety Precautions
(1) As necessary, use the applicable SAFETY BARRIERS, specified by the operator's instructions and your local regulations.
(2) Put the WARNING NOTICE(S) in the cockpit to tell persons not to operate the slat controls.
(3) Make sure that the ground safety locks are installed on the landing gear (Ref. AMM TASK 32-00-00-481-001).

Subtask 27-84-61-860-050-A

B. Aircraft Maintenance Configuration
(1) Make sure the 98D27803500001 LOCKING TOOL ZERO POS or 98D27803500002 LOCKING TOOL ZERO POS is on the flap and slat control lever on panel 114VU.

Subtask 27-84-61-865-060-A

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

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
49VU	FLIGHT CONTROLS/SLT/CTL AND MONG/SYS1	5CV	B06
** ON A/C NOT FOR ALL
49VU	FLIGHT CONTROLS/SLT/CTL AND MONG/SYS1	5CV	B01
** ON A/C ALL
121VU	FLIGHT CONTROLS/WTB/SLT/SYS2	11CV	P19
121VU	FLIGHT CONTROLS/SLT/CTL/SYS2	7CV	R21
122VU	FLIGHT CONTROLS/WTB/SLT/SYS1	9CV	S06

Subtask 27-84-61-010-052-A

D. Get Access

CAUTION: REMOVE THE CLOSING PLATES BEFORE YOU REMOVE THE ACCESS PANELS. IF YOU DO NOT OBEY THIS INSTRUCTION, YOU CAN CAUSE DAMAGE TO THE CLOSING PLATES.

(1) Remove the applicable closing plate(s) (Ref. AMM TASK 27-84-69-000-001).
(2) Remove the Slat 1 (Ref. AMM TASK 27-84-63-000-001).
(3) Remove the applicable access panels:

for the left wing, remove the panels 521AB 521BB 521CB 521EB
for the right wing, remove the panels 621AB 621BB 621CB 621EB

(Ref. AMM TASK 57-41-37-000-004) and (Ref. AMM TASK 57-41-37-000-005).
(4) For the tracks 2 and 3, remove the applicable actuator (Ref. AMM TASK 27-84-48-000-001).

4. Procedure
Subtask 27-84-61-020-053-A

A. Removal of the Slat Tracks 1 thru 4

NOTE: When slat tracks 1 and 4 are made it can be necessary to install spacers in the main channel. This is to get the correct tolerance. The number of spacers installed in a track can be between zero and four. If spacers are installed, do not remove them when you remove the track.

(1) Install the 98D27804014000 TOOL-BACKSTOP SLAT (TRACKS 1, 2, 3, AND 4) (2) through the guide (3) on the applicable track (1):

on the LH wing, install the TOOL-BACKSTOP SLAT (2) on the inboard side of the track
on the RH wing, install the TOOL-BACKSTOP SLAT (2) on the outboard side of the track.

(2) Push the TOOL-BACKSTOP SLAT (2) against the rear stop (4) to disengage it from the track stop.
(3) Pull the track (1) from its installed position and remove it.
(4) Remove the 98D27804014000 TOOL-BACKSTOP SLAT (TRACKS 1, 2, 3, AND 4) (2) from the track (1).

[Rev.10 from 2021] 2026.03.31 23:57:54 UTC