Installation of the Avionics-Compartment Forward Door

TASK 52-41-11-400-001-A
Installation of the Avionics-Compartment Forward Door

WARNING: BE CAREFUL WHEN YOU USE CONSUMABLE MATERIALS. OBEY THE MATERIAL MANUFACTURER'S INSTRUCTIONS AND YOUR LOCAL REGULATIONS.

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.

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	DYNAMOMETER 20 DAN (45 LBF) - PULL
No specific	Torque wrench: range to between 0.45 and 0.35 m.daN (39.82 and 30.97 lbf.in )

B. Consumable Materials

REFERENCE	DESIGNATION
(Material No.03FAB1)	Mineral Oil base Grease-- Vaseline or Petrolatum -
(Material No.08BAA9)	Non Aqueous Cleaner-General - -

C. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
811

D. Expendable Parts

FIG.ITEM	DESIGNATION	IPC-CSN
3	COTTER PIN	AIPC 52-41-01-01-030
3	COTTER PIN	AIPC 52-41-81-01-030

E. Referenced Information

REFERENCE	DESIGNATION
TASK 20-28-00-720-005-A	Check of the Electrical Bonding of the Different Components (but not the Fluid Systems and Components Installed on Composite materials)
TASK 52-71-00-710-001-A	Operational Test of the Door Warning System
Avionics-Compartment Forward Door
Avionics-Compartment Forward Door - Check of Dimension

3. Job Set-up
Subtask 52-41-11-860-050-A

A. Aircraft Maintenance Configuration
(1) Make sure that the access platform is in position.

Subtask 52-41-11-865-051-A

B. Make sure that this(these) circuit breaker(s) is(are) open, safetied and tagged:

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C ALL
121VU	EIS/SDAC1 AND 2/DOOR/DET/AVNCS	46WV	P02

Subtask 52-41-11-916-051-A

C. Preparation for Installation
(1) Clean the aircraft structure that touches the door seal with Non Aqueous Cleaner-General - - (Material No.08BAA9) .
(2) Apply Mineral Oil base Grease-- Vaseline or Petrolatum - (Material No.03FAB1) on the surface of the seal that touches the aircraft structure.

4. Procedure
Subtask 52-41-11-420-050-A

A. Installation of the Avionics-Compartment Forward Door

Avionics-Compartment Forward Door

(1) Install the bushes (5), (8) and (6).
(2) Put the door (1) in position opposite the hinges.
(3) Install the pins (7).
(4) Install the washer (9) and the nuts (4). Tighten the nuts.
(5) Connect the bonding leads (2).
(6) Check the electrical bonding between the door (1) and the fuselage structure (Ref. AMM TASK 20-28-00-720-005).
(7) Install the new AIPC 52-41-01-01-030 COTTER PIN (3) or AIPC 52-41-81-01-030 COTTER PIN (3).

Subtask 52-41-11-220-051-A ** ON A/C NOT FOR ALL

B. Check and Adjustment of the Out-of-flush Dimension Between the Door and the Fuselage

Avionics-Compartment Forward Door - Check of Dimension ** ON A/C NOT FOR ALL

(1) Close the door (11) and measure the clearance J2 between the door stops and the stop fittings.
(2) Make sure that J2 is 0.2 mm (0.0079 in.) minimum.
(3) Measure the out-of-flush dimension J1 between the door (11) and the fuselage at points P1 and P2.
(4) Calculate the final out-of-flush dimension J at points P1 and P2 as follows:
J= J1+J2
(5) Make sure that the out-of-flush dimension J is 0 -0.8 mm or +0.8 mm (0.0000 -0.0315 in. or +0.0315 in.).
(6) If the out-of-flush dimension J is not in the tolerances:
(a) Open the door (11) and adjust the door stop.

Remove the two self-locking nuts (12), the two screws (13) and the washers (14).
Put a new set of washers (14) and install the two screws (13) and the two self-locking nuts (12).
Close the door (11) and make sure that the clearance J2 is 0.2 mm (0.0079 in.) minimum.
TORQUE the two self-locking nuts (12) to between 0.45 and 0.35 m.daN (39.82 and 30.97 lbf.in ) .

Subtask 52-41-11-220-054-A ** ON A/C NOT FOR ALL

C. Check of the Peripheral Clearance

Avionics-Compartment Forward Door - Check of Dimension ** ON A/C NOT FOR ALL

(1) Make sure that the peripheral clearance J3 between the door (11) and the fuselage is 2 +1 mm or -1 mm (0.0787 +0.0394 in. or -0.0394 in.).

Subtask 52-41-11-220-051-H ** ON A/C NOT FOR ALL

D. Check and Adjustment of the Out-of-flush Dimension between the Door and the Fuselage

Avionics-Compartment Forward Door - Check of Dimension ** ON A/C NOT FOR ALL

(1) Close the door (11) and measure clearance J2 between the door stops and the stop fittings.
(2) Make sure that clearance J2 is a minimum of 0.2 mm (0.01 in.).
(3) Measure the out-of-flush dimension J1 between the door (11) and the fuselage at points P1 and P2.
(4) Calculate the final out-of-flush dimension J at points P1 and P2 as follows:
J= J1+J2
(5) Make sure that the out-of-flush dimension J is 0 -0.8 mm or +0.8 mm (0.00 -0.03 in. or +0.03 in.).

NOTE: A maximum clearance of -0.8 mm (-0.03 in.) to 1.2 mm (0.05 in.) is permitted for the out-of-flush dimension J at points P1 and P2 if the peripheral clearance J3, at points P1 and P2, is not in the maximum clearance. You must refer to Para. 4.C for the peripheral clearance J3.

(6) If the out-of-flush dimension J is not in the tolerances:
(a) Open the door (11) and adjust the door stop.

Remove the two self-locking nuts (12), the two screws (13) and the washers (14).
Put a new set of washers (14) and install the two screws (13) and the two self-locking nuts (12).
Close the door (11) and make sure that clearance J2 is a minimum of 0.2 mm (0.01 in.).
TORQUE the two self-locking nuts (12) to between 0.45 and 0.35 m.daN (39.82 and 30.97 lbf.in ) .

Subtask 52-41-11-220-054-B ** ON A/C NOT FOR ALL

E. Check of the Peripheral Clearance

Avionics-Compartment Forward Door - Check of Dimension ** ON A/C NOT FOR ALL

(1) Make sure that the peripheral clearance J3 between the door (11) and the fuselage is 2 +1 mm or -1 mm (0.0787 +0.0394 in. or -0.0394 in.).

NOTE: A maximum clearance of 2 -1.5 mm or +1.5 mm (0.0787 -0.0591 in. or +0.0591 in.) is permitted for the peripheral clearance J3, if the out-of flush dimension J, at points P1 and P2, is not in the maximum clearance. You must refer to Para. 4.B for the out-of flush dimension J.

Subtask 52-41-11-220-052-A

F. Check of the Load on the Locking Handle
(1) Close the door.
(2) Measure the load on the door handle with a DYNAMOMETER 20 DAN (45 LBF) - PULL and make sure that the load is between 8 daN (17.98 lbf) and 16 daN (35.97 lbf).

Subtask 52-41-11-710-050-A

G. Test
(1) Do an operational test of the door warning system (Ref. AMM TASK 52-71-00-710-001).

5. Close-up
Subtask 52-41-11-865-052-A

A. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C ALL
121VU	EIS/SDAC1 AND 2/DOOR/DET/AVNCS	46WV	P02

Subtask 52-41-11-410-050-A

B. Close Access
(1) Remove the ground support and maintenance equipment, the special and standard tools and all other items.
(2) Close the door 811.
(3) Remove the access platform(s).

[Rev.10 from 2021] 2026.04.02 07:23:41 UTC