Detailed Inspection of the Control Cables

TASK 27-21-00-210-002-A
Detailed Inspection of the Control Cables

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.

ZONE: 130
ZONE: 150
ZONE: 160
ZONE: 210
ZONE: 220
ZONE: 230
ZONE: 240
ZONE: 310

1. Reason for the Job
Refer to the MPD TASK: 272100-02
DETAILED INSPECTION OF CONTROL CABLES
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

REFERENCE	QTY	DESIGNATION
No specific	1	ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE
No specific	1	ACCESS PLATFORM 3M (10 FT)- ADJUSTABLE
No specific	AR	WARNING NOTICE(S)

B. Consumable Materials

REFERENCE	DESIGNATION
(Material No.14SBA1)	Textile-Lint free Cotton -

C. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
130	FWD CARGO COMPT AFT BULKHEAD OF AVNCS COMPT TO FWD PRESSURE BULKHEAD OF WING CENTER BOX
150	AFT CARGO COMPARTMENT FWD PRESS BULKHEAD TO AFT BULKHEAD OF AFT CARGO COMPARTMENT
160	BULK CARGO COMPARTMENT AFT BULKHEAD OF AFT CARGO COMPARTMENT TO AFT BULKHEAD OF BULK CARGO COMPARTMENT
210	CKPT,FWD COMPT BHD TO FLT COMPT BULKHEAD
220	FWD CAB UTILITY AREAS
230	FWD PASSENGER COMPARTMENT
240	MID PASSENGER COMPARTMENT
310	FUSLG TAIL SECTION AFT OF AFT PRESS BHD
312AR, 825, 826

D. Referenced Information

REFERENCE	DESIGNATION
TASK 20-24-11-100-001-A	Cleaning and Protection of the Cables
TASK 20-24-12-200-001-A	Check of the Control Cables
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 25-54-12-000-001-A	Removal of the Forward Cargo-Compartment Partition
TASK 25-54-12-000-002-A	Removal of the Ceiling Panels in the Forward Cargo Compartment
TASK 25-54-12-400-001-A	Installation of the Forward Cargo-Compartment Partition
TASK 25-54-12-400-002-A	Installation of the Ceiling Panels in the Forward Cargo Compartment
TASK 25-55-11-000-002-A	Removal of the Ceiling Panels in the Aft Cargo-Compartment - FR47/FR59
TASK 25-55-11-400-002-A	Installation of the Ceiling Panels in the Aft Cargo-Compartment - FR47/FR59
TASK 25-55-12-000-001-A	Removal of the Aft Cargo-Compartment Partition at FR65
TASK 25-55-12-000-002-A	Removal of the Ceiling Panels in the Aft Cargo Compartment at FR59/FR65
TASK 25-55-12-400-001-A	Installation of the Aft Cargo-Compartment Partition at FR65
TASK 25-55-12-400-002-A	Installation of the Ceiling Panels in the Aft Cargo Compartment at FR59/FR65
TASK 29-10-00-864-001-A	Depressurize the Green Hydraulic System
TASK 29-10-00-864-002-A	Depressurize the Yellow Hydraulic System
TASK 29-10-00-864-003-A	Depressurize the Blue Hydraulic System
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 53-12-11-000-001-A	Removal of the Cockpit Floor Panels from FR1 thru FR12
TASK 53-12-11-400-001-A	Installation of the Cockpit Floor Panels from FR1 thru FR12
TASK 53-12-12-000-001-A	Removal of the Cabin Floor Panels from FR12 thru FR24
TASK 53-12-12-400-001-A	Installation of the Cabin Floor Panels from FR12 thru FR24
TASK 53-22-12-000-001-A	Removal of the Cabin Floor Panels
TASK 53-22-12-400-001-A	Installation of the Cabin Floor Panels
TASK 53-32-12-000-002-A	Removal of the Cabin Floor Panels
TASK 53-32-12-400-002-A	Installation of the Cabin Floor Panels
TASK 06-41-53-00	FUSELAGE-DESCRIPTION AND OPERATION
Rudder Mechanical Control-Cables ** ON A/C NOT FOR ALL
Rudder Mechanical Control-Cables

3. Job Set-up
Subtask 27-21-00-860-056-A

A. Aircraft Maintenance Configuration
(1) Energize the ground service network (Ref. AMM TASK 24-42-00-861-001).
(2) Make sure that the hydraulic systems are depressurized
(Ref. AMM TASK 29-10-00-864-001), (Ref. AMM TASK 29-10-00-864-002), (Ref. AMM TASK 29-10-00-864-003).
(3) Put the WARNING NOTICE(S) on the CAPT and F/O rudder pedals to tell persons not to operate them.

Subtask 27-21-00-010-072-A

B. Get Access

Rudder Mechanical Control-Cables ** ON A/C NOT FOR ALL

(1) Put the ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE in position at zone 132.
(2) Put the ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE in position at zone 154.
(3) Put the ACCESS PLATFORM 3M (10 FT)- ADJUSTABLE in position at zone 312.
(4) Open access doors 825 and 826 (Ref. AMM TASK 52-30-00-860-001).
(5) Open access door 312AR.
(6) Remove the panels that follow:
(a) In zones 211 and 221:
1 If necessary, remove the floor panels between FR8 and FR12 (Ref. AMM TASK 53-12-11-000-001) and (Ref. AMM D/O 06-41-53-00).
2 Remove the floor panels between FR12 and FR20 (Ref. AMM TASK 53-12-12-000-001) and (Ref. AMM D/O 06-41-53-00).
(b) In zones 231 and 241:
1 Remove the floor panels between FR20 and FR24 and between FR32 and FR47 (Ref. AMM TASK 53-12-12-000-001), (Ref. AMM TASK 53-22-12-000-001), (Ref. AMM TASK 53-32-12-000-002) and (Ref. AMM D/O 06-41-53-00).
(c) In zone 131:
1 Remove the ceiling panels between FR24 and FR35 (Ref. AMM TASK 25-54-12-000-002) and (Ref. AMM D/O 06-41-53-00).
2 Remove the forward cargo-compartment partition (Ref. AMM TASK 25-54-12-000-001) and (Ref. AMM D/O 06-41-53-00).
(d) In zone 151 and 161:
1 Remove the ceiling panels between FR47 and FR59 (Ref. AMM TASK 25-55-11-000-002), (Ref. AMM TASK 25-55-12-000-002) and (Ref. AMM D/O 06-41-53-00).
(e) In zone 161:
1 Remove the aft cargo-compartment partition (Ref. AMM TASK 25-55-12-000-001) and (Ref. AMM D/O 06-41-53-00).

4. Procedure
Subtask 27-21-00-210-051-A

A. Detailed Inspection of the Control Cables

Rudder Mechanical Control-Cables

(1) Make sure that the fairleads are in the correct condition.
(2) At FR70, make sure that the pressure seals (3) are correctly installed and in the correct condition.
(3) Make sure that the turnbuckles (1) are safetied with the lock clips (2).
(4) Do a detailed inspection of the cables:
(a) Do a visual inspection of the cables to make sure that there are no broken wires.

NOTE: The very important areas where the wires can break along the length of the cables that:

Go through the fairleads and the pressure seals
Go around the pulleys, the tension regulator and the quadrant.

1 Examine the lengths of the cables that:

Go through the fairleads and the pressure seals
Go around the pulleys, the tension regulator and the quadrant.

2 Make sure that there is no broken wire:

Move the Textile-Lint free Cotton - (Material No.14SBA1) along the cables, in the two directions.
If the Textile-Lint free Cotton - (Material No.14SBA1) catches on the cables, do a detailed check of the control cables (Ref. AMM TASK 20-24-12-200-001).

(b) Do a visual inspection of the cables to make sure that they are not worn.

NOTE: The very important areas where the cables can wear along the length of the cables that:

Go through the fairleads and the pressure seals
Go around the pulleys, the tension regulator and the quadrant.

If you find cable wear, do a detailed check of the control cables (Ref. AMM TASK 20-24-12-200-001).

NOTE: The corrosion of cables frequently occurs in:

The battery compartments
The toilets
The landing gear wells
Other areas where the fumes and the liquids (that can cause corrosion) can collect.

If you find corrosion, do a detailed check of the control cables (Ref. AMM TASK 20-24-12-200-001).

(5) Clean and apply the corrosion preventive compound on the cables (Ref. AMM TASK 20-24-11-100-001).
(6) Make sure that the linkage can move freely and does not touch or rub against:

The tubing
The structures
The electrical routing
The adjacent controls.

5. Close-up
Subtask 27-21-00-942-058-A

A. Make sure that the work area is clean and clear of tools and other items.

Subtask 27-21-00-410-066-A

B. Close Access

Rudder Mechanical Control-Cables ** ON A/C NOT FOR ALL

(1) Install the panels that follow:
(a) In zones 211 and 221:
1 If necessary, install the floor panels between FR8 and FR12 (Ref. AMM TASK 53-12-11-400-001) and (Ref. AMM D/O 06-41-53-00).
2 Install the floor panels between FR12 and FR20 (Ref. AMM TASK 53-12-12-400-001) and (Ref. AMM D/O 06-41-53-00).
(b) In zones 231 and 241:
1 Install the floor panels between FR20 and FR24 and between FR32 and FR47 (Ref. AMM TASK 53-22-12-400-001), (Ref. AMM TASK 53-32-12-400-002) and (Ref. AMM D/O 06-41-53-00).
(c) In zone 131:
1 Install the ceiling panels between FR24 and FR35 (Ref. AMM TASK 25-54-12-400-002) and (Ref. AMM D/O 06-41-53-00).
2 Install the forward cargo-compartment partition (Ref. AMM TASK 25-54-12-400-001) and (Ref. AMM D/O 06-41-53-00).
(d) In zone 151 and 161:
1 Install the ceiling panels between FR47 and FR59 (Ref. AMM TASK 25-55-11-400-002), (Ref. AMM TASK 25-55-12-400-002) and (Ref. AMM D/O 06-41-53-00).
2 Install the aft cargo-compartment partition (Ref. AMM TASK 25-55-12-400-001) and (Ref. AMM D/O 06-41-53-00).
(2) Close access door 312AR.
(3) Close access doors 825 and 826 (Ref. AMM TASK 52-30-00-860-002).
(4) Remove the access platform(s).

Subtask 27-21-00-860-057-A

C. Put the aircraft back to its initial configuration.
(1) Remove the WARNING NOTICE(S).
(2) De-energize the ground service network (Ref. AMM TASK 24-42-00-862-001).

[Rev.10 from 2021] 2026.03.31 23:48:02 UTC