(a) Put a warning notice to tell persons not to start the engine.

 (2)
 Make sure that the engine 1(2) shutdown occurred not less than 5 minutes before you do this procedure.

 (3)
 On the overhead maintenance panel 50VU:

 (a)
 Make sure that the ON legend of the ENG/FADEC GND PWR/1(2) pushbutton switch is off.

 (b)
 Put a warning notice to tell persons not to energize the FADEC 1(2)

 Subtask 54-51-17-040-051
 B. Aircraft Maintenance Configuration
 (1)
 Make the thrust reverser unserviceable (Ref. TASK 78-30-00-481-041). Subtask 54-51-17-020-061

 C. Removal of the Forward Attach-Fittings

 (1)
 Remove the forward attach-fittings (Ref. TASK 54-51-17-000-001). Subtask 54-51-17-941-053

 D. Get Access
 (1) Put the access platform in position:
 (a)
 in the zone 410 for the left pylon,

 (b)
 in the zone 420 for the right pylon.

 4. Procedure
_________
 Subtask 54-51-17-220-068
 A. Inspection of the Shackles
 (1) Do an inspection of the shackles for corrosion and make sure that the corrosion damage is in the permitted limits. (Ref. Fig. 601/TASK 54-51-17-991-008)
 (a)
 If the damaged area is:

 - on one side only and is less than 400 mm2 (0.62 in.2): the maximum depth of the defect must be 1.5 mm (0.0590 in.).

 (b)
 If the damaged areas are:

 - on the two sides and are less than 400 mm2 (0.62 in.2): the sum of the maximum depth of the defects on the two sides must be
 1.5 mm (0.0590 in.).
 (c)
 If the damaged area is:

 - on one side only and is more than 400 mm2 (0.62 in.2): the maximum depth of the defect must be 1 mm (0.0393 in.).

 (d)
 If the damaged areas are:

 - on the two sides and are more than 400 mm2 (0.62 in.2): the sum of the maximum depth of the defects on the two sides must be 1 mm (0.0393 in.).

 (e)
 If the damaged area:

 -is around the bore on one side only and:
 -maximum dimension of the defect measured radially is less than 25 mm (0.9842 in.).
 -The maximum depth of the defect must be 0.6 mm (0.0236 in.).

 (f)
 If the damaged areas:

 -are around the bore on the two sides and:
 -Maximum dimension of the defect measured radially is less than 25 mm (0.9842 in.): the sum of the maximum depth of the defects on the two sides must be 0.6 mm (0.0236 in.).
 Subtask 54-51-17-220-050
 B. Inspection of the Pylon-to-Wing Forward Attach-Fitting
 (1) Do a detailed inspection of the pylon-to-wing forward attach-fitting and make sure that the dimensions are correct. (Ref. Fig. 602/TASK 54-51-17-991-009)

 Permitted Corrosion on the Shackles
 Figure 601/TASK 54-51-17-991-008
 1EFF :  ALL  1  54-51-17 Page 608 
1  1  Feb 01/98
 1  1
 1CES  1

 Forward Attach Fitting
 Figure 602/TASK 54-51-17-991-009
 1EFF :  ALL  1  54-51-17 Page 609 
1  1  Feb 01/98
 1  1
 1CES  1

 -------------------------------------------------------------------------------
| FIG. | ORIGINAL MANUFACTURING LIMITS | IN-SERVICE WEAR LIMITS | | DETAIL |---------------------------------------|----------------------------| | AND | DIMENSION | ASSEMBLY CLEARANCE| DIMENSION LIMITS | MAX. | | ITEM | IN. (MM) | IN. (MM) | IN. (MM) | ALLOW. | | NO. |-------------------|-------------------|---------|---------| CLEAR. | | | MIN. | MAX. | MIN. | MAX. | MIN. | MAX. |IN. (MM)| |--------|---------|---------|---------|---------|---------|---------|--------| | A | 1.5738 | 1.5742 | | | 1.5731 | | | | OD 1 |(39.974) |(39.984) | | |(39.956) | | | | | | | 0.0006 | 0.0019 | | | 0.0040| | | | | (0.015) | (0.048) | | |(0.101) | | A | 1.5748 | 1.5757 | | | | 1.5771 | | | ID 2 |(39.999) |(40.022) | | | |(40.058) | | -------------------------------------------------------------------------------
Subtask 54-51-17-220-051
 C. Inspection of the Pylon-to-Wing Forward Attach-Fitting
 (1) Do a detailed inspection of the pylon-to-wing forward attach-fitting and make sure that the dimensions are correct. (Ref. Fig. 602/TASK 54-51-17-991-009)
 -------------------------------------------------------------------------------| FIG. | ORIGINAL MANUFACTURING LIMITS | IN-SERVICE WEAR LIMITS | | DETAIL |---------------------------------------|----------------------------| | AND | DIMENSION | ASSEMBLY CLEARANCE| DIMENSION LIMITS | MAX. | | ITEM | IN. (MM) | IN. (MM) | IN. (MM) | ALLOW. | | NO. |-------------------|-------------------|---------|---------| CLEAR. | | | MIN. | MAX. | MIN. | MAX. | MIN. | MAX. |IN. (MM)| |--------|---------|---------|---------|---------|---------|---------|--------| | A | 1.5738 | 1.5742 | | | 1.5731 | | | | OD 1 |(39.974) |(39.984) | | |(39.956) | | | | | | | 0.0006 | 0.0019 | | | 0.0040| | | | | (0.015) | (0.048) | | |(0.101) | | A | 1.5748 | 1.5757 | | | | 1.5771 | | | ID 4 |(39.999) |(40.022) | | | |(40.058) | | -------------------------------------------------------------------------------
　
中國航空網 m.k6050.com
航空翻譯 www.aviation.cn
本文鏈接地址：A320飛機維護手冊 AMM NACELLES/PYLONS(63)