SDR UIEA2025062500811

Service difficulty report · Spar · Boeing 747481

Difficulty date: June 28, 2025
Submitted: June 30, 2025
Operation: Air carrier
Aircraft: N429MC
Make and model: Boeing 747481
Aircraft serial: 24833
Aircraft time: 120,653 hours, 18,547 cycles
System (JASC): 5711 · Wing Spar
Part: Spar
Condition: Corroded
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

CORROSION ON RH WING FRONT SPAR OUTBOARD LOWER CHORD AT FSSO 1509.45. REMOVED THE AFFECTED FASTENERS IAW SRM 51-40-02-0G-0 REV 62. BLENDED OUT THE DAMAGE AREA IAW SRM 51-10-02-0G-0 REV 62. PERFORMED NDT INSPECTION REFER TO JOB CARD NO: 044869 AND DATA SHEET NO: 11051171-1. 4. PERFORMED EI NO: T2025A57M-991 REV 1. 5. ACCOMPLISHED EI NO: T2025A57M-991 REV 3. 6. JOB COMPLETED AND CONDITION CHECK NORMAL.