Service difficulty report · Skin · Boeing 7378H4

Difficulty date
December 18, 2025
Submitted
December 23, 2025
Operation
Air carrier
Aircraft
N8656B
Make and model
Boeing 7378H4
Aircraft serial
42530
Aircraft time
35,388 hours, 16,991 cycles
Part
Skin
Condition
Debonded
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

BOTTOM OF LEFT TRAILING EDGE FLAP REPAIR APPEARS TO BE SEPARATING. EVALUATED LT OTBD TE AFT FLAP. TAP TEST LOWER SKIN, FOUND FLAP LOWER SKIN AT INBD END DEBONDED, 23.5 IN. L X 10.5 IN. W. DAMAGE IS BEYOND ALLOWABLE DAMAGE LIMITS IAW SRM 57-53-01-1A-5. R & R LT OTBD TE AFT FLAP IAW AMM 27-51-22. INSPECTED IAW AMM 27-51-22.

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