Service difficulty report · Fairing · Boeing 7478F

Difficulty date
May 6, 2026
Submitted
June 1, 2026
Operation
Air carrier
Aircraft
N611UP
Make and model
Boeing 7478F
Aircraft serial
64257
Aircraft time
29,966 hours, 4,379 cycles
Part
Fairing
Part number
113U961222
Condition
Debonded
Location
Zone 600
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

FOUND RH WING NO.6 FLAP TRACK FWD FAIRING DISBOND (REPAIR). 1. I.A.W. 747-8F SRM 57-53-70-2R-1 REFER TO SRM 51-70-04-2R-1 AND SRM 51-30-10-0G-0 REV. 48 PERFORM REPAIR AS BELOW STEP : REMOVE THE DISBOND MATERIALS AND CLEAN. MEASURE THE DAMAGE AREA ( DIA : 2", 32" FROM AFT EDGE, 33" FROM UPR EDGE ). BOND THE REPAIR PLIES WITH RESIN CURED AT 200°F FOR 240 MINUTES WITH MINIMUM VACUUM OF 22 IN/HG. CONDITION CHECK IS SATISFACTORY. ATTACHMENTS ARE UPLOADED. I.A.W. B747 NDT MANUAL PART 1, 51-01-01 AND PART 4, 51-00-05, REV.182 TO PERFORM NDT/UT FOR THE POST REPAIRED AREA INCLUDED THE AREA WAS HOT PLUS WITHIN 6" ALL AROUND. RESULT: NO DEFECT FOUND.

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