Service difficulty report · Skin · Boeing 747409F

Difficulty date
September 11, 2026
Submitted
September 11, 2026
Operation
Air carrier
Aircraft
N438GT
Make and model
Boeing 747409F
Aircraft serial
30766
Aircraft time
97,028 hours, 17,686 cycles
Part
Skin
Condition
Debonded
Location
Zone 500
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, LT WING INBD AILERON EXTERNAL LWR SKIN. REMOVED THE DISBONDED MATERIAL & CLEANED THE AREA. MEASURED THE DAMAGED AREA (L= 3", W= 1", 2" & FROM T/E, 28" FROM THE OTBD EDGE LWR SKIN, WITHOUT CORE DAMAGE). BONDED THE REPAIR PLIES WITH RESIN, CURED AT 150 F FOR 180 MINUTES WITH MINIMUM VACUUM OF 22 INHG IAW SRM 57-60-01-2R-1 REV 107 & SRM 51-70-06-0G-0, REV 107. CONDITION CHKD SATISFACTORY.