Unloading Procedure for 60.4-Inch x 61.5-Inch Unit Load Devices (ULD) in the Lower Deck Aft Cargo-Compartment

TASK 25-52-00-913-005-A
Unloading Procedure for 60.4-Inch x 61.5-Inch Unit Load Devices (ULD) in the Lower Deck Aft Cargo-Compartment

WARNING: MAKE SURE THAT YOU DO NOT CAUSE ACCIDENTAL MOVEMENT OF A ULD DURING THE UNLOADING PROCEDURE:

USE SUFFICIENT LOADING PERSONNEL TO DO THE PROCEDURE SAFELY.
DO NOT UNLOCK A ULD UNTIL IMMEDIATELY BEFORE YOU UNLOAD IT.

ACCIDENTAL MOVEMENT OF A ULD CAN CAUSE INJURY TO PERSONNEL AND/OR DAMAGE TO EQUIPMENT.

NOTE: When the joystick of the control panel is released, it moves to the neutral position and the PDUs stop.

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

REFERENCE	QTY	DESIGNATION
No specific	1	LOADER - PLATFORM

B. Referenced Information

REFERENCE	DESIGNATION
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 25-52-00-913-001-A	Operation of the Manually Operated Components of the Cargo Loading System (CLS) of the Lower Deck Forward and Aft Cargo-Compartments
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
Aft Cargo Compartment for 60.4-Inch x 61.5-Inch ULDs

3. Job Set-up
Subtask 25-52-00-860-095-A ** ON A/C NOT FOR ALL

A. Aircraft Maintenance Configuration
(1) Energize the ground service network
(Ref. AMM TASK 24-42-00-861-001).

CAUTION: MAKE SURE THAT THE LOADER PLATFORM AND THE AIRCRAFT DOOR SILL ARE CORRECTLY ALIGNED BEFORE YOU LOAD/UNLOAD A ULD. THIS PREVENTS DAMAGE TO THE AIRCRAFT DOOR SILL AND/OR THE ULD.

(2) Put a LOADER - PLATFORM in position at the entrance to the aft cargo compartment.
(3) Open the aft cargo-compartment door (Ref. AMM TASK 52-30-00-860-001).
(4) Set the CARGO COMPARTMENT LIGHT switch on the service panel to the ON position.
(5) Lower the manually operated pawls of the YZ-latches of the door-sill latches.
(6) Lower the entrance guide and lock it.
(7) On the control panel of the CLS:
(a) Set the SYST PWR switch to the ON position.
(b) Make sure that the SYST ON lamp comes on
(8) Set the DOOR SILL LATCH SWITCH on the control panel to the down position to lower the door sill latches.

4. Procedure
Subtask 25-52-00-913-062-A ** ON A/C NOT FOR ALL

Aft Cargo Compartment for 60.4-Inch x 61.5-Inch ULDs ** ON A/C NOT FOR ALL

(1) Put the manually operated components of the CLS in their correct positions for the unloading of ULDs (Ref. AMM TASK 25-52-00-913-001).

Subtask 25-52-00-913-064-A ** ON A/C NOT FOR ALL

Aft Cargo Compartment for 60.4-Inch x 61.5-Inch ULDs ** ON A/C NOT FOR ALL

(1) Lower the pawls of the latches, installed aft of the load position 41.
(2) Push the joystick on the control panel to the OUT position. Hold it in this position until the ULD stops.
(3) Release the joystick.
(4) Move the ULD out of the cargo compartment to its correct position on the loader platform.

Subtask 25-52-00-913-063-B ** ON A/C NOT FOR ALL

Aft Cargo Compartment for 60.4-Inch x 61.5-Inch ULDs ** ON A/C NOT FOR ALL

(1) Set the SILL LOCK handle to the UNLOCKED position to lower the anti-roll-out devices of the door-sill latches. Hold it in this position.
(2) Lower the pawls of the XZ-latches, installed forward of the load position 42.
(3) If the X-latch is installed forward of the load position 42, lift the X-latch to the up position.
(4) Push the joystick on the control panel to the FWD position. Hold it in this position until the ULD touches the XZ-latches at the aft of the load position 33.
(5) Push the joystick on the control panel to the OUT position. Hold it in this position until the ULD stops.
(6) Release the joystick.
(7) Move the ULD out of the cargo compartment to its correct position on the loader platform.

Subtask 25-52-00-913-065-D ** ON A/C NOT FOR ALL

Aft Cargo Compartment for 60.4-Inch x 61.5-Inch ULDs ** ON A/C NOT FOR ALL

(1) Lift the pawls of the XZ-latches, installed aft of the load position 41.
(2) Lower the pawls of the XZ-latches, installed aft of the ULD in its load position.
(3) Push the joystick on the control panel to the AFT position. Hold it in this position until the ULD touches the XZ-latches at the aft of the load position 41.
(4) Release the joystick.
(5) Push the joystick on the control panel to the OUT position. Hold it in this position until the ULD stops.
(6) Release the joystick.
(7) Move the ULD out of the cargo compartment to its correct position on the loader platform.

5. Close-up
Subtask 25-52-00-860-096-A ** ON A/C NOT FOR ALL

A. Put the Aircraft back to its Initial Configuration
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Make sure that the pawls of the YZ-latches of the door-sill latches are lifted.
(3) Set the DOOR SILL LATCH SWITCH on the control panel to the up position.
(4) On the outside control panel of the CLS, set the SYST PWR switch to the OFF position.

Subtask 25-52-00-410-081-A ** ON A/C NOT FOR ALL

B. Close Access
(1) Unlock the entrance guide and lift it.
(2) On the service panel, set the CARGO COMPARTMENT LIGHT switch to the OFF position.
(3) Remove the loader platform.
(4) Close the aft cargo-compartment door (Ref. AMM TASK 52-30-00-860-002).

Subtask 25-52-00-862-073-A ** ON A/C NOT FOR ALL

C. De-energize the ground service network
(Ref. AMM TASK 24-42-00-862-001).

[Rev.10 from 2021] 2026.03.31 23:37:46 UTC