Air-Inlet Flap Mechanism - In-Service Wear Limits

TASK 21-61-51-200-003-A
Air-Inlet Flap Mechanism - In-Service Wear Limits

1. Reason for the Job
Self explanatory
2. Job Set-up Information
A. Referenced Information

REFERENCE	DESIGNATION
TASK 21-61-00-300-001-A	Attachment and Linkage Components - Repair/Replacement
TASK 21-61-51-000-003-A	Removal of the Air-Inlet Flap Mechanism
TASK 21-61-51-200-003-A	Air-Inlet Flap Mechanism - In-Service Wear Limits
TASK 21-61-51-400-003-A	Installation of the Air-Inlet Flap Mechanism
In-Service Wear Limits - Inspection Points

3. Job Set-up
Subtask 21-61-51-860-058-A

A. Aircraft Maintenance Configuration
(1) Make sure that the applicable components are disassembled to do the inspection procedure.

4. Procedure
Subtask 21-61-51-210-052-B

A. Visual Inspection of the Spherical Bearings

NOTE: The tolerance for radial play in a spherical bearing is 0.05 mm (0.0020 in.).
The tolerance for axial play in a spherical bearing is 0.2 mm (0.0079 in.).

(1) Use an applicable measurement method and:
(a) Do a check for radial and axial play at the spherical bearings (3) in the tie-rod (10):

if you find radial and/or axial play more than the tolerances then replace the tie-rod (10) (Ref. AMM TASK 21-61-00-300-001).

(b) Do a check for radial and axial play at the spherical bearings (4) and (6) in the bracket (15):

if you find radial and/or axial play more than the tolerances then replace the bracket (15).

(c) Do a check for radial and axial play at the spherical bearing (11):

if you find radial and/or axial play more than the tolerances then replace the air inlet actuator eye-end (Ref. AMM TASK 21-61-00-300-001).

Subtask 21-61-51-220-052-B

B. In-Service Wear Limits
(1) Use applicable measurement equipment and measure the outside diameter (OD) of the bolt (16) and the inside diameter (ID) of the bushings (2).

NOTE: If any of the components are 'out of limits' then replace them.

for items (2) (Ref. AMM TASK 21-61-51-200-003).

FIG. DETAIL AND ITEM N°	ORIGINAL MANUFACTURING LIMITS	IN-SERVICE WEAR LIMITS
AA	6.325	6.335			6.318
OD 16	(0.2490)	(0.2494)			(0.2487)
			0.0230	0.0550			0.0690
			(0.0009)	(0.0022)			(0.0027)
AA	6.358	6.380				6.387
ID 2	(0.2503)	(0.2512)				(0.2515)

Subtask 21-61-51-220-053-B

C. In-Service Wear Limits
(1) Use applicable measurement equipment and measure the OD of the bolt (16) and the ID of the bushing (3).

NOTE: If any of the components are 'out of limits' then you must replace them.

for item (3) (Ref. AMM TASK 21-61-00-300-001).

FIG. DETAIL AND ITEM N°	ORIGINAL MANUFACTURING LIMITS	IN-SERVICE WEAR LIMITS
AA	6.325	6.335			6.317
OD 16	(0.2490)	(0.2494)			(0.2487)
			0.0050	0.0190			0.0340
			(0.0002)	(0.0007)			(0.0013)
AA	6.340	6.344				6.351
ID 3	(0.2496)	(0.2498)				(0.2500)

Subtask 21-61-51-220-054-B

D. In-Service Wear Limits
(1) Use applicable measurement equipment and measure the OD of the bolt (1) and the ID of the spacer (5).

NOTE: If any of the components are 'out of limits' then you must replace them.

for item (5) (Ref. AMM TASK 21-61-00-300-001).

FIG. DETAIL AND ITEM N°	ORIGINAL MANUFACTURING LIMITS	IN-SERVICE WEAR LIMITS
BB	9.499	9.509			9.492
OD 1	(0.3740)	(0.3744)			(0.3737)
			0.0050	0.0290			0.0430
			(0.0002)	(0.0011)			(0.0017)
BB	9.514	9.528				9.535
ID 5	(0.3746)	(0.3751)				(0.3754)

Subtask 21-61-51-220-055-B

E. In-Service Wear Limits
(1) Use applicable measurement equipment and measure the OD of the bolt (1) and the ID of the bushing (18).

NOTE: If any of the components are 'out of limits' then you must replace them.

FIG. DETAIL AND ITEM N°	ORIGINAL MANUFACTURING LIMITS	IN-SERVICE WEAR LIMITS
BB	9.499	9.509			9.492
OD 1	(0.3740)	(0.3744)			(0.3737)
			0.0050	0.0290			0.0430
			(0.0002)	(0.0011)			(0.0017)
BB	9.514	9.528				9.535
ID 18	(0.3746)	(0.3751)				(0.3754)

Subtask 21-61-51-220-056-B

F. In-Service Wear Limits
(1) Use applicable measurement equipment and measure the OD of the bushing (18) and the ID of the spherical bearing (6).

NOTE: If any of the components are 'out of limits' then you must replace them.

for item (6) you must replace the bracket (15) (Ref. AMM TASK 21-61-51-000-003) and (Ref. AMM TASK 21-61-51-400-003).

FIG. DETAIL AND ITEM N°	ORIGINAL MANUFACTURING LIMITS	IN-SERVICE WEAR LIMITS
BB	12.683	12.694			12.684
OD 18	(0.4993)	(0.4998)			(0.4994)
			0.0060	0.0350			0.0410
			(0.0002)	(0.0014)			(0.0016)
BB	12.700	12.718				12.725
ID 6	(0.5000)	(0.5007)				(0.5010)

Subtask 21-61-51-220-057-B

G. In-Service Wear Limits
(1) Use applicable measurement equipment and measure the OD of the bolt (14) and the ID of the bushing (13).

NOTE: If any of the components are 'out of limits' then you must replace them.

FIG. DETAIL AND ITEM N°	ORIGINAL MANUFACTURING LIMITS	IN-SERVICE WEAR LIMITS
CC	6.325	6.337			6.318
OD 14	(0.2490)	(0.2495)			(0.2487)
			0.0030	0.0270			0.0410
			(0.0001)	(0.0011)			(0.0016)
CC	6.340	6.352				6.359
ID 13	(0.2496)	(0.2501)				(0.2504)

Subtask 21-61-51-220-058-B

H. In-Service Wear Limits
(1) Use applicable measurement equipment and measure the OD of the bushing (13) and the ID of the shouldered bushing (4).

NOTE: If any of the components are 'out of limits' then you must replace them.

for item (4) (Ref. AMM TASK 21-61-00-300-001).

FIG. DETAIL AND ITEM N°	ORIGINAL MANUFACTURING LIMITS	IN-SERVICE WEAR LIMITS
CC	9.983	9.992			9.976
OD 13	(0.3930)	(0.3934)			(0.3928)
			0.0080	0.0350			0.0490
			(0.0003)	(0.0014)			(0.0019)
CC	10.000	10.018				10.025
ID 4	(0.3937)	(0.3944)				(0.3947)

Subtask 21-61-51-220-059-B

I. In-Service Wear Limits
(1) Use applicable measurement equipment and measure the OD of the bolt (14) and the ID of the shouldered bushing (5).

NOTE: If any of the components are 'out of limits' then you must replace them.

for item (5) (Ref. AMM TASK 21-61-00-300-001).

FIG. DETAIL AND ITEM N°	ORIGINAL MANUFACTURING LIMITS	IN-SERVICE WEAR LIMITS
CC	6.325	6.337			6.318
OD 14	(0.2490)	(0.2495)			(0.2487)
			0.0030	0.0270			0.0410
			(0.0001)	(0.0011)			(0.0016)
CC	6.340	6.352				6.359
ID 5	(0.2496)	(0.2501)				(0.2504)

Subtask 21-61-51-220-060-A

J. In-Service Wear Limits
(1) Use applicable measurement equipment and measure the OD of the bolt (7) and the ID of the shouldered bushing (4).

NOTE: If any of the components are 'out of limits' then you must replace them.

for item (4) (Ref. AMM TASK 21-61-00-300-001).

FIG. DETAIL AND ITEM N°	ORIGINAL MANUFACTURING LIMITS	IN-SERVICE WEAR LIMITS
DD	7.905	7.925			7.898
OD 7	(0.3112)	(0.3120)			(0.3109)
			0.0050	0.0360			0.0500
			(0.0002)	(0.0014)			(0.0020)
DD	7.930	7.941				7.948
ID 4	(0.3122)	(0.3126)				(0.3129)

Subtask 21-61-51-220-061-A

K. In-Service Wear Limits
(1) Use applicable measurement equipment and measure the OD of the bolt (7) and the ID of the bushing (8).

NOTE: If any of the components are 'out of limits' then you must replace them.

FIG. DETAIL AND ITEM N°	ORIGINAL MANUFACTURING LIMITS	IN-SERVICE WEAR LIMITS
DD	7.905	7.925			7.898
OD 7	(0.3112)	(0.3120)			(0.3109)
			0.0050	0.0360			0.0500
			(0.0002)	(0.0014)			(0.0020)
DD	7.930	7.941				7.948
ID 8	(0.3122)	(0.3126)				(0.3129)

Subtask 21-61-51-220-062-A

L. In-Service Wear Limits
(1) Use applicable measurement equipment and measure the OD of the bushing (8) and the ID of the shouldered bushing (5).

NOTE: If any of the components are 'out of limits' then you must replace them.

for item (5) (Ref. AMM TASK 21-61-00-300-001).

FIG. DETAIL AND ITEM N°	ORIGINAL MANUFACTURING LIMITS	IN-SERVICE WEAR LIMITS
DD	11.983	11.994			11.976
OD 8	(0.4718)	(0.4722)			(0.4715)
			0.0060	0.0350			0.0490
			(0.0002)	(0.0014)			(0.0019)
DD	12.000	12.018				12.025
ID 5	(0.4724)	(0.4731)				(0.4734)

[Rev.10 from 2021] 2026.04.02 06:11:40 UTC