ABX 101, 109, 114, 115, 314-999 (Continued)
(c) Dry chemical powder contamination.
1) Remove the engine for disassembly and cleaning (TASK 71-00-02-004-004-G00).
(d) Halogenated hydrocarbon (Halon) agent contamination.
1) Remove the engine for disassembly and cleaning (TASK 71-00-02-004-004-G00).
ABX 001-007, 011, 012, 016-019, 021, 022, 025, 101, 109, 114, 115, 314-999
S. Fan Outlet Guide Vane (OGV) Inspection
SUBTASK 72-00-00-216-098-G00
(1) Do the steps that follow to examine the OGVs on the fan:
(a) Do the fluorescent penetrant inspection on the No. 9 fan OGV
(TASK 70-11-06-232-010-G00).
NOTE: The No. 1 OGV is the first vane clockwise of the 12 o'clock position (when you
look aft to forward).
1) If you see a crack, do the fluorescent penetrant inspection on the remaining vanes
in the quadrant (positions 1 to 22) (TASK 70-11-06-232-010-G00).
2) If you do not see a crack, visually examine the remaining vanes in the quadrant.
T. Ice Damage on the Forward Fan Case Inspection
SUBTASK 72-00-00-216-097-G00
(1) If the engine was operated during usual to dangerous ice conditions, you must do a visual
inspection of the aft acoustical panels on the forward fan case (TASK 72-33-05-206-001-G00).
U. Air System Failure Inspection
ABX 001-007, 011, 012, 016-019, 021, 022, 025, 101, 109, 114, 115, 314-999; ENGINES WITHOUT
CHECK VALVES
SUBTASK 72-00-00-216-135-G00
(1) If there was a decrease in cooling air from the cooling air system, do the steps that follow:
NOTE: The cooling air system is the clamps, tubes, and manifolds which supply the stage 7
compressor air from the stator case manifolds to the low pressure stage 1 nozzles.
(a) Examine the tubes for open cracks or material that is gone.
1) If the total damage area is more than 0.25 square inch (160 sq mm), replace the
tube.
2) If the tube has a crack that is 360 degrees around the tube circumference, replace
the tube.
(b) If the cooling air system damage is more than the limits, do the steps that follow to find
the Continue-In-Operation Limits:
NOTE: The number of cycles the engine was operated with a cooling air failure is used
to find the continue-in-operation limits. Look at the record of the nacelle
temperature to find this information. An open blow-out door is also a sign of a
cooling system failure.
NOTE: If more than one cooling air decrease has occurred since a LPT overhaul, count
the number of cycles since the first cooling air decrease.
(c) If the engine was operated for less than 12 cycles with a cooling air decrease, it can
continue in operation if:
767
AIRCRAFT MAINTENANCE MANUAL
CF6-80A SERIES ENGINES
72-00-00
NoC
Page 668
D633T1B7 Aug 22/2017
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...
