What was found
SKIN INTERNAL SURFACE CORRODED AT BS 1480, S4L-4R, 4L-12L, 4R-12R, 12L-18L. CUT OUT DAMAGED SKIN. MFG & INSTALLED FILLERS, DOUBLERS, & TRIPLERS IAW ECRA 5330-04576, 5330-04577, 5330-04578. MAJOR REPAIR.
- Difficulty date
- June 28, 2013
- Submitted
- July 25, 2013
- Operation
- Air carrier
- Aircraft
- N121UA
- Make and model
- Boeing 747422
- Aircraft serial
- 29167
- Aircraft time
- 58,897 hours, 6,853 cycles
- Engine
- Pwa PW4056
- System (JASC)
- 5330 · Fuselage Main, Plate/Skin
- Part
- Skin
- Condition
- Corroded
- Location
- Bs 1480
- 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.