Detailed Inspection of the Slat Tracks, Roller Bearings, Pinion Bearings and Curved Rack Gears - As Visible

TASK 27-84-00-210-001-A
Detailed Inspection of the Slat Tracks, Roller Bearings, Pinion Bearings and Curved Rack Gears - As Visible

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.

1. Reason for the Job
Refer to the MPD TASK: 278468-02
DETAILED INSPECTION OF SLAT TRACKS, ROLLER BEARINGS, PINION BEARINGS AND CURVED RACK GEARS - AS VISIBLE.
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

REFERENCE	QTY	DESIGNATION
No specific	1	ACCESS PLATFORM 4M (13 FT)-ADJUSTABLE
No specific	AR	FLASHLIGHT
No specific	AR	MIRROR - INSPECTION, FLEXIBLE
No specific	AR	SAFETY BARRIER(S)
No specific	AR	SAFETY CLIP - CIRCUIT BREAKER
No specific	AR	WARNING NOTICE(S)
98D27803000000	1	LOCKING TOOL-FLAP SLAT LEVER,INT. POSITION

B. Consumable Materials

REFERENCE	DESIGNATION
(Material No.08BAA9)	Non Aqueous Cleaner-General - -
(Material No.14SBA1)	Textile-Lint free Cotton -

C. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
521AB, 521CB, 521EB, 522CB, 522FB, 522KB, 522LB, 522NB, 522QB, 522SB, 522UB, 621AB, 621CB, 621EB, 622CB, 622FB, 622KB, 622LB, 622NB, 622QB, 622SB, 622UB
522AB, 622AB
522YB, 622YB

D. Referenced Information

REFERENCE	DESIGNATION
TASK 12-22-27-640-006-A	Lubricate all Track Rollers and Pinions
TASK 27-50-00-866-008-A	Extension of the Flaps on the Ground
TASK 27-50-00-866-008-A-01	Extension of the Flaps/Slats on the Ground
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 27-80-00-866-004-A	Extending the Slats on the Ground
TASK 27-80-00-866-005-A	Retracting the Slats on the Ground
TASK 27-84-68-350-003-A	Repair of Damaged Flanks of the Teeth of the Slat Track Pinions and Gear Racks
TASK 57-41-37-000-004-A	Removal of the Pressure Relief Panels
TASK 57-41-37-000-006-A	Removal of the Access Panels
TASK 57-41-37-400-002-A	Installation of the Pressure Relief Panels
TASK 57-41-37-400-006-A	Installation of the Access Panels
Slat Gear - Racks and Pinions ** ON A/C NOT FOR ALL
Slat Gear - Racks and Pinions ** ON A/C NOT FOR ALL

3. Job Set-up
Subtask 27-84-00-941-056-A

A. Safety Precautions
(1) As necessary, use the applicable SAFETY BARRIERS, specified by the operator's instructions and your local regulations.
(2) Put a WARNING NOTICE(S) in the cockpit to tell persons not to operate the slat controls.

Subtask 27-84-00-866-052-A

B. Flight Control Surface 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) Extend the flaps fully (Ref. AMM TASK 27-50-00-866-008).
(2) Extend the slats fully (Ref. AMM TASK 27-80-00-866-004).
(3) Make sure that the 98D27803000000 LOCKING TOOL-FLAP SLAT LEVER,INT. POSITION is on the flap/slat control lever.

Subtask 27-84-00-865-055-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/SLT/CTL/SYS2	7CV	R21

Subtask 27-84-00-010-054-A ** ON A/C NOT FOR ALL

D. Get Access
(1) Put the ACCESS PLATFORM 4M (13 FT)-ADJUSTABLE in position below the wing.
(2) Open the applicable access panel:

for the left wing, open:
521AB, 521CB, 521EB, 522AB, 522CB, (Ref. AMM TASK 57-41-37-000-004)

522FB, 522KB, 522LB, 522NB, 522QB, 522SB, 522UB, (Ref. AMM TASK 57-41-37-000-006)
for the right wing, open:
621AB, 621CB, 621EB, 622AB, 622CB, (Ref. AMM TASK 57-41-37-000-004)

622FB, 622KB, 622LB, 622NB, 622QB, 622SB, 622UB, (Ref. AMM TASK 57-41-37-000-006).

Subtask 27-84-00-010-054-B ** ON A/C NOT FOR ALL

D. Get Access
(1) Put the ACCESS PLATFORM 4M (13 FT)-ADJUSTABLE in position below the wing.
(2) Open the applicable access panel:

for the left wing, open:
521AB, 521CB, 521EB, 522YB, 522CB, (Ref. AMM TASK 57-41-37-000-004)

522FB, 522KB, 522LB, 522NB, 522QB, 522SB, 522UB, (Ref. AMM TASK 57-41-37-000-006)
for the right wing, open:
621AB, 621CB, 621EB, 622YB, 622CB, (Ref. AMM TASK 57-41-37-000-004)

622FB, 622KB, 622LB, 622NB, 622QB, 622SB, 622UB, (Ref. AMM TASK 57-41-37-000-006).

4. Procedure
Subtask 27-84-00-110-051-A

A. Clean the Components
(1) Clean these items:

the gear racks
the track pinions
the track side-load rollers
the track vertical-load rollers

with Textile-Lint free Cotton - (Material No.14SBA1) and Non Aqueous Cleaner-General - - (Material No.08BAA9) and let them dry.

Subtask 27-84-00-210-051-A

B. Detailed Visual Inspection of the Slat Track Rollers, the Pinions and the Curved Rack Gears
(1) Examine the Track Vertical-Load Rollers and the Track Side-Load Rollers:
(a) Make sure that the rollers are correctly installed.
(b) Use a FLASHLIGHT and a MIRROR - INSPECTION, FLEXIBLE and examine the rollers for:

cracks
scores
corrosion
satisfactory surface protection.

(2) Examine the Track Pinions:
(a) Make sure that the pinions are correctly installed.
(b) Use a FLASHLIGHT and a MIRROR - INSPECTION, FLEXIBLE and examine the pinions for:

cracks
scores
corrosion
satisfactory surface protection.

(3) Examine the Gear Racks:
(a) Make sure that the gear racks are correctly installed.
(b) Use a FLASHLIGHT and a MIRROR - INSPECTION, FLEXIBLE and examine the gear racks for:

cracks
scores
corrosion
satisfactory surface protection.

(4) If you find damage to the teeth of the track pinions or the gear racks, do the repair procedure (Ref. AMM TASK 27-84-68-350-003).

Subtask 27-84-00-640-050-A

C. Lubricate Items After Inspection
(1) When the inspection is complete, lubricate the items that follow:

the gear racks
the track pinions
the track side-load rollers
the track vertical-load rollers

(Ref. AMM TASK 12-22-27-640-006).

5. Close-up
Subtask 27-84-00-410-055-A ** ON A/C NOT FOR ALL

A. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Close the applicable access panels:

for the left wing, close 521AB, 521CB, 521EB, 522AB, 522CB, (Ref. AMM TASK 57-41-37-400-002)

522FB, 522KB, 522LB, 522NB, 522QB, 522SB, 522UB, (Ref. AMM TASK 57-41-37-400-006)
for the right wing, close 621AB, 621CB, 621EB, 622AB, 622CB, (Ref. AMM TASK 57-41-37-400-002)

622FB, 622KB, 622LB, 622NB, 622QB, 622SB, 622UB, (Ref. AMM TASK 57-41-37-400-006).

Subtask 27-84-00-410-055-B ** ON A/C NOT FOR ALL

A. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Close the applicable access panels:

for the left wing, close 521AB, 521CB, 521EB, 522YB, 522CB, (Ref. AMM TASK 57-41-37-400-002)

522FB, 522KB, 522LB, 522NB, 522QB, 522SB, 522UB, (Ref. AMM TASK 57-41-37-400-006)
for the right wing, close 621AB, 621CB, 621EB, 622YB, 622CB, (Ref. AMM TASK 57-41-37-400-002)

622FB, 622KB, 622LB, 622NB, 622QB, 622SB, 622UB, (Ref. AMM TASK 57-41-37-400-006).

Subtask 27-84-00-865-056-A

B. 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
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/SLT/CTL/SYS2	7CV	R21

Subtask 27-84-00-866-053-A

C. Flight Control Surface Configuration
(1) Remove the 98D27803000000 LOCKING TOOL-FLAP SLAT LEVER,INT. POSITION from the flap/slat control lever.
(2) Retract the slats fully (Ref. AMM TASK 27-80-00-866-005).
(3) Retract the flaps fully (Ref. AMM TASK 27-50-00-866-009).

Subtask 27-84-00-942-058-A

D. Removal of Equipment
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Remove the safety barriers.
(3) Remove the WARNING NOTICE(S).
(4) Remove the access platform(s).
(5) Remove the ground support and maintenance equipment, the special and standard tools and all other items.

[Rev.10 from 2021] 2026.03.31 23:56:37 UTC