Service difficulty report · Skin · Boeing 7478F

Difficulty date
September 15, 2026
Submitted
September 22, 2026
Operation
Air carrier
Aircraft
N613UP
Make and model
Boeing 7478F
Aircraft serial
64259
Aircraft time
29,927 hours, 4,405 cycles
Part
Skin
Part number
65B4050027
Condition
Eroded
Location
Zone 300
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

ERODED SKIN , VST FIN TIP AREA PANEL 327 EXTERNAL SURFACE. PERFORMED NDT/UT FOR REWORKED AND PLUS 6 INCHES AROUND HEATED AREA, IAW NDT MANUAL PART 1 51-01-01, REV 183. NO DEFECT FOUND. REMOVE THE EROSION MATERIALS AND CLEAN. BOND THE REPAIR PLIES WITH FILM ADHESIVE CURED AT 260°F FOR 130 MINUTES WITH MINIMUM VACUUM OF 22 IN/HG. I.A.W. 747-8F SRM 55-30-30-2R-1 REFER TO SRM 51-70-05-2R-1 AND SRM 51-70-05-2R-0 REV. 49.

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