Removal of the IGGS Pallet

TASK 47-11-41-000-001-A
Removal of the IGGS Pallet

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: DO NOT GO INTO THE WORK AREA UNTIL A MINIMUM OF 5 MINUTES AFTER YOU REMOVE THE ACCESS PANEL. LET AIR FLOW THROUGH THE WORK AREA. AIR FROM THIS SYSTEM HAS A LOW OXYGEN CONTENT AND CAN CAUSE INJURY OR DEATH.

WARNING: BE CAREFUL WHEN YOU REMOVE OR INSTALL THIS EQUIPMENT. THIS EQUIPMENT IS HEAVY (MORE THAN 12 KG (26.5 lb)) AND CAN CAUSE INJURY AND/OR DAMAGE.

FIN: 8YA ** ON A/C NOT FOR ALL

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	CAP - BLANKING
No specific	AR	COVER - PROTECTION
No specific	AR	SAFETY CLIP - CIRCUIT BREAKER
98D47103500000	1	PALLET INERTING RI

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
191AB, 191BB

C. Referenced Information

REFERENCE	DESIGNATION
TASK 21-61-51-000-002-A	Removal of the Air Inlet
TASK 24-41-00-861-002-A	Energize the Aircraft Electrical Circuits from the External Power
TASK 24-41-00-861-002-A-01	Energize the Aircraft Electrical Circuits from the APU
TASK 24-41-00-861-002-A-02	Energize the Aircraft Electrical Circuits from Engine 1(2)
TASK 53-25-11-000-001-A	Removal of the Forward Belly Fairing Panels (191AT, 192AT, 191AB, 192AB)
TASK 53-35-13-000-002-A	Removal of the Quick-Release Access Panels from the Belly Fairing Structure
Access Panel Location
Electrical Connectors
Air Duct Connections
Tie Rod and Bonding Connections
GSE-TOOL, Pallet Inerting

3. Job Set-up
Subtask 47-11-41-861-050-A ** ON A/C NOT FOR ALL

A. Energize the aircraft electrical circuits (Ref. AMM TASK 24-41-00-861-002).

Subtask 47-11-41-865-050-A ** ON A/C NOT FOR ALL

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

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
49VU	AIR BLEED/X FEED/VALVE/BAT	2HV	D13
49VU	AIR COND/TEMP CTL/SYS 1 CHAN B/28VDC	52HH	D08
** ON A/C NOT FOR ALL
49VU	AIR BLEED/ENG 1/CTL	3HA1	D12
49VU	AIR BLEED/ENG 1/MONG	2HA1	D11
** ON A/C NOT FOR ALL
49VU	AIR BLEED/ENG 2/MONG	3HA2	D12
49VU	AIR BLEED/ENG 1/CTL	2HA1	D11
** ON A/C NOT FOR ALL
121VU	IGGS/CTRL	7YA	N28
** ON A/C NOT FOR ALL
121VU	IGGS/CTRL	7YA	P28
** ON A/C NOT FOR ALL
122VU	CSAS / CTRL	1HW	U17
122VU	AIR COND/TEMP CTL SYS 1/CHAN A/115VAC	49HH	X22
122VU	AIR COND/TEMP CTL SYS 1/CHAN A/28VDC	51HH	X21
122VU	AIR COND/TEMP CTL SYS 1/CHAN B/115VAC	50HH	Y18
122VU	AIR BLEED/X FEED VALVE/NORM	1HV	Z20
** ON A/C NOT FOR ALL
122VU	AIR BLEED/ENG 2/CTL	3HA2	Z23
122VU	AIR BLEED/ENG 2/MONG	2HA2	Z22
** ON A/C NOT FOR ALL
122VU	AIR BLEED/ENG 1/MONG	3HA1	Z23
122VU	AIR BLEED/ENG 2/CTL	2HA2	Z22

Subtask 47-11-41-010-050-A ** ON A/C NOT FOR ALL

C. Get Access

Access Panel Location ** ON A/C NOT FOR ALL

(1) Remove forward belly-fairing panel 191AB (Ref. AMM TASK 53-25-11-000-001).
(2) Remove quick-release access panel 191BB (Ref. AMM TASK 53-35-13-000-002).

Subtask 47-11-41-941-050-A ** ON A/C NOT FOR ALL

D. Safety Precautions
(1) On the panel 30VU:
(a) Make sure that:

the APU BLEED pushbutton switch is in the off position (the ON legend is off) and,
the ENG 1 BLEED and the ENG 2 BLEED pushbutton switches are in the off position (the OFF legends are on).

(b) Put a warning notice in position to tell persons not to operate these pushbutton switches.
(2) On the HP ground connector put a warning notice in position to tell persons not to supply the ground air.

4. Procedure
Subtask 47-11-41-020-050-A ** ON A/C NOT FOR ALL

A. Disconnection of the Electrical Connectors

Electrical Connectors ** ON A/C NOT FOR ALL

(1) Disconnect the electrical connectors (1), (2), (3), (4) and (5).
(2) Put the CAP-BLANKING on each disconnected electrical connector and receptacle.

Subtask 47-11-41-020-051-A ** ON A/C NOT FOR ALL

B. Removal of the Air Duct Connections

Air Duct Connections ** ON A/C NOT FOR ALL

(1) Remove the clamps (6) and (8).
(2) Remove the bellow (7).
(3) Put COVER - PROTECTION on the open duct ends.
(4) Loosen the connectors (9) and (11).
(5) Remove the flexible hose (10).
(6) Put protective covers on the open duct ends.
(7) Loosen the connectors (12) and (14).
(8) Remove the flexible hose (13).
(9) Put protective covers on the open duct ends.

Subtask 47-11-41-020-052-A ** ON A/C NOT FOR ALL

WARNING: SUPPORT THE UNIT/ASSEMBLY. THE UNIT/ASSEMBLY IS HEAVY. IF YOU DO NOT SUPPORT IT, IT WILL FALL. THIS CAN CAUSE INJURY TO PERSONS, AND/OR DAMAGE TO EQUIPMENT.

CAUTION: BE CAREFUL WHEN YOU TOUCH THIS ASSEMBLY. IT HAS PRECISION- TOLERANCE COMPONENTS WITH VERY POLISHED SURFACES. IF YOU ARE NOT CAREFUL, IT IS VERY EASY TO CAUSE DAMAGE TO THESE COMPONENTS (INTERNAL CONTAMINATION, EXTERNAL IMPACT DAMAGE).

CAUTION: MAKE SURE THAT THE ELECTRICAL CONNECTOR(S) IS(ARE) DISCONNECTED BEFORE YOU DISCONNECT THE BONDING STRAP(S).

C. Removal of the IGGS Pallet

Tie Rod and Bonding Connections ** ON A/C NOT FOR ALL

GSE-TOOL, Pallet Inerting ** ON A/C NOT FOR ALL

(1) Remove the screw (41), the washer (40) and disconnect the bonding strap (39).
(2) Remove the screw (46), the washer (45) and disconnect the bonding strap (44).
(3) Support the IGGS pallet (25):
(a) Install the half-shell 98D47103500044 (50) of the GSE toolset 98D47103500000 PALLET INERTING RI on FR 34/35.7 and safety it with the attachment screw (51).
(b) Make sure that you support the IGGS pallet correctly before you loosen the tie rods (17) and (18) of the air inlet (27) in the next work step.
(4) Remove the air inlet (27) (Ref. AMM TASK 21-61-51-000-002).
(5) Remove the nuts (36), the washers (35), the bolts (32),
if fitted the washers (33), if fitted the bushings (34),
the tie rods (15), (17), (18) and (26).

NOTE: Identify the tie rods for correct position in the installation procedure.

(6) Remove the screws (37), the washers (38) and the bracket (16).

WARNING: HEAVY WEIGHT. MINIMUM 2 PERSONS OR ASSISTED HANDLING REQUIRED.

(7) Get another person and remove the IGGS pallet (25).

NOTE: The IGGS pallet weighs approx. 20.9 kg (46.0766 lb).

(a) Support the IGGS pallet and:
1 Remove the clips (31) and the tie rods in this order: (19), (20), (23) and (21).
2 Remove the nut (28), the washers (29), the bolt (30), the clip (31) and the tie rod (22).
(b) Carefully remove the IGGS pallet from the aircraft.
(8) Remove the half-shell (50) from FR 34/35.7.

[Rev.10 from 2021] 2026.04.02 07:20:21 UTC