Service difficulty report · Skin · Boeing 7377H4

Difficulty date
September 16, 2025
Submitted
September 17, 2025
Operation
Air carrier
Aircraft
N912WN
Make and model
Boeing 7377H4
Aircraft serial
36621
Aircraft time
57,374 hours, 34,657 cycles
Part
Skin
Condition
Delaminated
Location
Zone 500 Flap
Stage of operation
IN
How discovered
V
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

LEFT INBD MAIN FLAP OTBD OF NR 3 CANOE ON TRAILING EDGE OF FLAP; UPPER SIDE IS DELAMINATED. ACCOMPLISHED TAP TEST ON UPPER DISCREPANCY AREA; NO DELAM NOTED. FOUND DEFORMED AND WARPED ON UPPER SKIN FROM LOWER SKIN SEPARATION. APPLIED SPEED TAPE ON LT INBD MAIN FLAP OTBD OF NR 3 CANOE ON TRAILING EDGE UPPER SIDE IAW MPM 52.05A. OK TO CONTINUE. REMOVED DAMAGED TRAILING EDGE WEDGE, LOCATED AND DRILLED NEW WEDGE PER SRM 51-40-06; INSTALLED NEW WEDGE PER SOPM 20-50-01.

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