F. Continue-In-Operation Limits
SUBTASK 72-00-00-866-088-G00
(1) The Continue-In-Operation Limits for the fan assembly follow:
NOTE: It is possible that during an inspection check, the damage is more than the Maximum
Serviceable Limit, but the repair cannot be done immediately. The
Continue-In-Operation Limits permit the airplane to continue in operation for a
specified number of flight cycles. The airplane must be repaired at the end of this time.
The Continue-In-Operation limits are for one time only. The repair must be done at the
end of the time limit.
NOTE: Make sure that you refer to the Maximum Serviceable Limits before the
Continue-In-Operation Limits.
(a) Fan Rotor, Stage 2, 3 and 4 Blades
CONDITION CONTINUE-IN-OPERATION LIMIT
Nicks and dents on the center panel of the blade 10 flights or 100 flight hours
Nicks and dents on the leading and trailing edges 10 flights or 100 flight hours
Tip curl or bent blades 10 flights or 100 flight hours
(b) Fan Forward Case
CONDITION CONTINUE-IN-OPERATION LIMIT
Missing microballoon material less than 30 (inches) (762 mm) long and less
than total of 300 square inches (1935.6 sq cm)
100 flight hours
Damage to the fiberglass cover on the Kevlar containment ring 100 flight hours if the Kevlar material is not
damaged.
Damaged forward acoustical panel (Fig. 620). The loose material and frayed
wires must be removed (TASK 72-33-05-004-001-G00).
10 flights or 100 flight hours
Damaged aft acoustical panel (Fig. 620). After the time limit, you must
remove or replace the damaged panel and the two panels directly aft
(TASK 72-33-05-004-001-G00).
10 flights or 100 flight hours
(c) Fan Frame and Case
CONDITION CONTINUE-IN-OPERATION LIMIT
Damaged acoustical panels aft of the fan blades (Fig. 620) 10 flights or 100 flight hours
Bypass valve has rivets that are gone 5 flights or 50 flight hours
Damaged outlet guide vanes (OGVs), not cracks 5 flights or 50 flight hours
Cracks in the outlet guide vanes (OGVs) less than 1.0 inch (25.4 mm) in
length
10 flight cycles
Cracks in the outlet guide vanes (OGVs) more than 1.0 inch (25.4 mm) in
length.
10 flight cycles, if the cracked OGV is
removed.
Outlet guide vanes (OGVs), no more than two are gone 10 flight cycles
Cracks in the circumferential plane of the outlet guide vanes between the
L-rib and the T-rib on the aft fan case (Fig. 621)
*[1]*[2]
250 flight cycles
Condition A: No cracks can extend into the radius area of the L-rib (forward
of the OGV stiffening rib)
5 flight cycles
767
AIRCRAFT MAINTENANCE MANUAL
CF6-80A SERIES ENGINES
72-00-00
NoC
Page 654
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
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