What was found
UPPER LT WING L/E SURFACE, JUST OUTBOARD OF NR 2 ENG, HAS CRACK APPROX 4 FEET IN LENGTH, ORIENTATED IN A FORE TO AFT DIRECTION. DOUBLER MANUFACTURED. LAID UP & DRILLING FASTENER HOLES. DOUBLER REPAIR INSTALLED.
- Difficulty date
- July 25, 2008
- Submitted
- July 28, 2008
- Operation
- Air carrier
- Aircraft
- N174UA
- Make and model
- Boeing 747422
- Aircraft serial
- 24381
- Aircraft time
- 72,150 hours, 8,104 cycles
- Engine
- Pwa PW4056
- System (JASC)
- 5730 · Wing, Plate/Skin
- Part
- Skin
- Condition
- Cracked
- Location
- Lt Wing
- Stage of operation
- IN
- How discovered
- 9
- Nature of condition
- O
- Precautionary procedure
- K
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.