(Continued)
Condition Maximum Serviceable Limits
Nicks and scratches in Area A
(Figure 603)
Permitted, if they are less than 0.03 inch (0.8 mm) in depth, and 0.5 inch (12.7 mm)
in length. They must have a minimum separation of 0.5 inch (12.7 mm).
Nicks and scratches in Area B
(Figure 603)
Permitted, one in each 1.0 square inch (6.45 square cm). They must be less than
0.015 inch (0.4 mm) in depth and 0.5 inch (12.7 mm) in length.
Corrosion (discoloration) Permitted, if there are no scales or pits.
SUBTASK 72-33-04-216-013-G00
(6) Visually examine the pylon panels for the conditions that follow:
NOTE: Also examine the pylon panels that are aft of struts No. 1 and No. 7.
Condition Maximum Serviceable Limits
Cracks in the screw holes Permitted, one in each screw hole, if the adjacent screw holes are not cracked.
The cracks must be less than 0.25 inch (6.4 mm) in length.
Cracks in the other areas (not in the
screw holes)
Not permitted.
Nicks and scratches Permitted, if they are less than 0.03 inch (0.8 mm) in depth, 0.06 inch (1.5 mm) in
width, and 3.0 inches (76.2 mm) in length (after you remove the high metal).
Screws that are loose or gone Not permitted. You must tighten or replace the screws.
Pylon seals on the thrust reverser
that are damaged or gone
Not permitted. Repair or replace (PAGEBLOCK 78-00-00/801).
SUBTASK 72-33-04-216-014-G00
(7) Visually examine the service tubes and connections for the conditions that follow:
Condition Maximum Serviceable Limits
Cracks Not permitted.
Nicks and scratches Permitted if they are less than 0.010 inch (0.25 mm) in depth (after you remove the high
metal). The nicks and scratches must not go fully across the mating surface.
Dents Permitted, if the dents have a smooth contour, and are less than 0.06 inch (1.5 mm) in
depth. The contour rate must be less than 0.010 inch (0.25 mm) for each inch.
SUBTASK 72-33-04-216-015-G00
(8) Visually examine the case for the conditions that follow:
Condition Maximum Serviceable Limits
Cracks (all areas other than the
circumferential plane of the OGV)
One in ten bolts on the forward flange can have a crack that is less than 0.25
inch (6.4 mm) in length.
One in five lightening holes in the case rib can have a crack that is less than 0.25
inch (6.4 mm) in length.
One crack that goes through the flange and into the case skin is permitted. It
must be less than 3.0 inch (76 mm) in length.
Cracks in the circumferential plane of
the OGV
Not permitted. Refer to the Continue-In-Operation Limits
(TASK 72-00-00-206-054-G00).
Dents Permitted, if they have a smooth contour and are less than 0.19 inch (4.8 mm) in
depth. There must be a minimum separation of 4 inches (102 mm) between the
dents.
767
AIRCRAFT MAINTENANCE MANUAL
CF6-80A SERIES ENGINES
72-33-04
NoC
Page 606
D633T1B7 Dec 22/2016
ECCN 9E991 BOEING PROPRIETARY - Copyright © Unpublished Work - See title page for details
EFFECTIVITY
ABX 001-007, 011, 012, 016-019, 021, 022, 025, 101,
109, 114, 115, 314-999
To Next Page
Loading...
