Service difficulty report · Skin · Boeing 7377CT

Difficulty date
November 21, 2023
Submitted
December 21, 2023
Operation
Air carrier
Aircraft
N7881A
Make and model
Boeing 7377CT
Aircraft serial
35084
Aircraft time
50,539 hours, 26,785 cycles
Part
Skin
Part number
UNKNOWN
Condition
Cracked
Location
Zn 300 Stabilize
Stage of operation
IN
How discovered
9
Nature of condition
O
Precautionary procedure
K

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

CRACK FOUND ON LT HORIZONTAL STAB. LOWER IN-SPAR SKIN AT STA. 193.90 RIB; 17' APPROX. FROM L/E; I/B ROW (CRACK LENGTH 0.50') CRACK FOUND ON LT HORIZONTAL STAB. LOWER IN-SPAR SKIN AT STA. 193.90 RIB 17' APPROX. FROM L/E I/B ROW (CRACK LENGTH 0.50')<[01] ACCOMPLISHED REPAIRS AT L/H HORIZONTAL STAB LOWER INSPAR SKIN AT STA 193.90 RIB 17'APROXIMATELY FROM L/E REF SRM 55-10-01-2R-11 REPAIR 11. REPAIR INSPECTION REQUIREMENTS ARE AS FOLLOWS: <BR>INSPECTION THRESHOLD IS 56;000 TOTAL FLIGHT CYCLES. A DETAILED VISUAL INSPECTION WILL BE REQUIRED AT AN INTERVAL OF 9;000 FLIGHT CYCLES AND AN EXTERNAL LOW FREQUENCY EDDY CURRENT (LFEC) INSPECTION AT INTERVAL OF 9;000 FLIGHT CYCLES.

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