Service difficulty report · Skin · Boeing 76734AF

Difficulty date
September 12, 2026
Submitted
September 22, 2026
Operation
Air carrier
Aircraft
N316UP
Make and model
Boeing 76734AF
Aircraft serial
27744
Aircraft time
71,438 hours, 24,756 cycles
Part
Skin
Condition
Debonded
Location
Zone 500 Flap
Component
Flap · Boeing
Component part number
113T310089
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

DEBONDED SKIN, INBD EDGE OF LT WING T/E OUTBD FLAP T/E SKIN, WBL 355, TOTAL: 2 AREA. REMOVE THE DISBOND MATERIALS AND CLEAN. BOND THE REPAIR PLIES WITH RESIN CURED AT 200°F FOR 220 MINUTES WITH MINIMUM VACUUM OF 22 IN/HG. I.A.W CMM 57-53-51 REV 39 INSTALL THE OUTBD LH FLAP INBD SIDE SEAL AND RETAINER.

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