- Difficulty date
- May 3, 2016
- Submitted
- May 6, 2016
- Operation
- Air carrier
- Aircraft
- N178UA
- Make and model
- Boeing 747422
- Aircraft serial
- 24385
- Aircraft time
- 103,694 hours, 12,225 cycles
- Engine
- Pwa PW4056
- Part
- Doubler
- Condition
- Cracked
- Location
- Nr 4 Pylon
- 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
NUMBER 4 PYLON OTBD SKIN EXISTING REPAIR DOUBLER AT FWD UPPER CORNER OF ACCESS PANEL 482ER CRACKED. REMOVED DAMAGED EXISTING DOUBLER & TRIMMED OUT CRACK. ACCOMPLISHED HFEC OF SKIN & OPEN FASTENER HOLES IAW ECRA 5430-02084. FABRICATED & INSTALLED DOUBLER & TRIPLER REPAIR.