Installation of the Locking Handle

TASK 53-15-11-400-003-A
Installation of the Locking Handle

ZONE: 110

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	GAGE - SPRING
No specific	AR	WARNING NOTICE(S)

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
110	RADOME (NOSE CONE TO FR 1)

C. Expendable Parts

FIG.ITEM	DESIGNATION	IPC-CSN
51	COTTER PIN	AIPC 53-15-11-03-220

D. Referenced Information

REFERENCE	DESIGNATION
TASK 53-15-11-010-001-A	Opening of the Radome
TASK 53-15-11-410-001-A	Closing of the Radome
Locking Handle
Locking Handle Adjustment
Check of the Hook Out-of-Flushness ** ON A/C NOT FOR ALL
Check of the Hook Out-of-Flushness and Adjustment ** ON A/C NOT FOR ALL

3. Job Set-up
Subtask 53-15-11-869-054-A

A. Aircraft Maintenance Configuration
(1) Make sure that the radome is open (Ref. AMM TASK 53-15-11-010-001).
(2) Make sure that the access platform is in position at zone 110.
(3) Make sure that the WARNING NOTICE(S) is(are) in position on the center pedestal to tell persons not to operate the radar system.

Subtask 53-15-11-865-065-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	COM NAV/RADAR/1	5SQ1	K13
** ON A/C NOT FOR ALL
121VU	COM NAV/RADAR/2	5SQ2	K14

4. Procedure
Subtask 53-15-11-420-058-A

A. Installation of the Locking Handle

Locking Handle

(1) Put the locking handle (54) in position.
(2) Install the bolt (56) and the washer (55).
(3) Install the washer (53) and the nut (52).
(4) Tighten the nut (52).
(5) Install the new AIPC 53-15-11-03-220 COTTER PIN (51).

Subtask 53-15-11-820-055-A

B. Adjustment of the Locking Handle

Locking Handle Adjustment

(1) Fully close the radome (Ref. AMM TASK 53-15-11-410-001).
(2) Measure the force of the locking handle (54):
(a) Put the GAGE - SPRING, with a capacity of 20 daN (44.9618 lbf) to 10 mm (0.3937 in.), at the end of the locking handle (54).
(b) Make sure that the tension of the locking handle (54) is between 8 daN (17.9847 lbf) and 12 daN (26.9771 lbf).
(3) If necessary, adjust the tension of the locking handle (54) to between 8 daN (17.9847 lbf) and 12 daN (26.9771 lbf) as follows:
(a) Open the radome (Ref. AMM TASK 53-15-11-010-001).
(b) Turn the nut (57):

Clockwise to decrease the length of the spring rod (58) and increase the tension of the locking handle (54).
Counterclockwise to increase the length of the spring rod (58) and decrease the tension of the locking handle (54).

Subtask 53-15-11-820-057-A ** ON A/C NOT FOR ALL

C. Check of the Hook Out-of-Flushness

Check of the Hook Out-of-Flushness ** ON A/C NOT FOR ALL

(1) Make sure that out-of-flushness J1 of the hook between the hinge arm (102) and the radome (101) is 0.5 -1.5 mm or +1.5 mm (0.0197 -0.0591 in. or +0.0591 in.).

Subtask 53-15-11-820-057-B ** ON A/C NOT FOR ALL

C. Check of the Hook Out-of-Flushness and Adjustment

Check of the Hook Out-of-Flushness and Adjustment ** ON A/C NOT FOR ALL

(1) Make sure that out-of-flushness J1 of the hook between the hinge arm (103) and the radome (102) is 0.5 -1.5 mm or +1.5 mm (0.0197 -0.0591 in. or +0.0591 in.).
(2) If out-of-flushness J1 is not in the tolerance, adjust the position of the locking fitting (104) as follows:
(a) Loosen the four screws (101).
(b) Adjust the position of the locking fitting (104) with the serrated plate (105).
(c) Tighten the four screws (101).

5. Close-up
Subtask 53-15-11-865-066-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	COM NAV/RADAR/1	5SQ1	K13
** ON A/C NOT FOR ALL
121VU	COM NAV/RADAR/2	5SQ2	K14

Subtask 53-15-11-942-058-A

B. Close Access
(1) Remove the WARNING NOTICE(S).
(2) Remove the ground support and maintenance equipment, the special and standard tools and all other items.
(3) Close the radome (Ref. AMM TASK 53-15-11-410-001).
(4) Remove the access platform(s).

[Rev.10 from 2021] 2026.04.02 06:28:51 UTC