-
The inspection of the outer casing skins
-
The inspection of the threaded ports and skins
-
The inspection of the guide bushing to the oil supply tube
-
The inspection of the midstream fairing
-
The inspection of the rear cover
B. References
(1)
71-11-02/201, Fan Cowl Panels
(2)
72-56-00/801, Turbine Frame
(3)
78-31-00/201, Thrust Reverser
C. Access
(1) Location Zones
502/602 Left Fan Cowl Panels
503/603 Right Fan Cowl Panels
504/604 Left Thrust Reversers
505/605 Right Thrust Reversers
506 Engine No. 1
606 Engine No. 2
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72-56-00
ALL ú ú C01 Page 601 ú Mar 15/92
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
////////////////////////A / /
CFM56 ENGINES
737-300/400/500/ /MAINTENANCE MANUAL ////////////////////////
AFT FLANGE
S-M56-PC-0040-(01)-00-B
Turbine Frame Inspection Figure 601
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72-56-00
ALL ú ú C01 Page 602 ú Oct 25/85
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
////////////////////////A / /
CFM56 ENGINES
737-300/400/500/ /MAINTENANCE MANUAL ////////////////////////
(2) Access Panels
5737L Engine No. 1 - Right Fan Cowl Panel
5738L Engine No. 1 - Left Thrust Reverser
5739L Engine No. 1 - Right Thrust Reverser
5746L Engine No. 1 - Left Fan Cowl Panel
5837R Engine No. 2 - Right Fan Cowl Panel
5838R Engine No. 2 - Left Thrust Reverser
5839R Engine No. 2 - Right Thrust Reverser
5846R Engine No. 2 - Left Fan Cowl Panel
D. Prepare for the Inspection.
S 016-002-C00
(1) Open the left and right fan cowl panel (AMM 71-11-02/201).
S 016-003-C00
WARNING: OBEY THE INSTRUCTIONS IN AMM 78-31-00/201 WHEN YOU OPEN THE
_______
THRUST REVERSERS. IF YOU DO NOT OBEY THE INSTRUCTIONS, INJURY
TO PERSONS OR DAMAGE TO THE EQUIPMENT CAN OCCUR.
(2) Open the left and right thrust reverser (AMM 78-31-00/201).
E. Make an Inspection of the Forward and Aft Outer Flanges
S 216-004-C00
(1) Examine the forward and aft outer flanges for these:
(a)
Cracks that connect the bolt holes - Not serviceable.
(b)
Cracks that extend from the bolt holes to the outer edge of the flange. 1) One for each hole not more than 0.2 inches (5.0 mm) in
length with a minimum distance of five holes between the cracks.
(c)
Cracks that extend from the bolt holes to the casing skin.
1) Five for each flange not more than 0.2 inch (5.0 mm) in length with a minimum distance of 10 holes between the cracks.
NOTE: Only axial cracks are permitted.
____
2) Cracks must not extend into the heat affected areas of a weld.
(d)
Cracks in other areas of the flange.
1) Five for each flange not more than 0.2 inch (5.0 mm) in length with a minimum distance of 5.0 inches (127.0 mm) between all other cracks.
(e)
Nicks, scores and scratches in the flange:
1) Five for each flange not more than 0.5 inch (12.5 mm) in length, not more than 0.020 inch (0.50 mm) in depth after the removal of all burrs, and with a minimum distance of
1.0 inch (25.4 mm) between the cracks.
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