Service difficulty report · Stringer · Boeing 7478F

Difficulty date
August 13, 2026
Submitted
August 31, 2026
Operation
Air carrier
Aircraft
N611UP
Make and model
Boeing 7478F
Aircraft serial
64257
Aircraft time
30,614 hours, 4,476 cycles
Part
Stringer
Condition
Damaged
Location
Zone 100
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

BURN MARK ON SKIN INBOARD OF STR 47R . NEXT TO 6TH FASTENER FWD OF STATION 180 . REF DWG 65B14255 EO-98398-REQ1 (NOSE CARGO DOOR SKIN DENT DAMAGE AT STA 175 AND STR 47R (CATEGORY B REPAIR) PROVIDES REPAIR INSTRUCTIONS OF THE CATEGORY B PERMANENT REPAIR. BOEING HAS ISSUED THE SECOND STAGE DAMAGE TOLERANCE ANALYSIS (DTA) INSPECTION THRESHOLD AND THIS CATEGORY B PERMANENT REPAIR PENDING THIRD STAGE DTA INSPECTION REQUIREMENTS.<BR><BR>VERIFIED ALL WORK STEPS HAVE BEEN ACCOMPLISHED. TASKS T3F18E009HLM7 (EO-98398-PRELIM1) AND T3F18E009HSTW (EO-98398-PRELIM2). THE SECOND STAGE DAMAGE TOLERANCE ANALYSIS (DTA) HAS BEEN COMPLETED. MAJOR REPAIR.

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