What was found
CORROSION WITH BROKEN ON NR 4 ENG LT CORE COWL SKIN BETWEEN ST 222.5 AND STA 230.5. REPAIRED CORE COWL SKIN IAW EI T2018A71M-4600 REV1 AND EI T2018A71M-4600 REV1 AND EI T2018O71M-5022 REV 0. JOB COMPLETED AND CONDITION CK NORMAL.
- Difficulty date
- September 26, 2018
- Submitted
- October 1, 2018
- Operation
- Air carrier
- Aircraft
- N780BA
- Make and model
- Boeing 747409
- Aircraft serial
- 24310
- Aircraft time
- 83,219 hours, 15,893 cycles
- System (JASC)
- 7110 · Engine Cowling System
- Part
- Skin
- Condition
- Corroded
- Location
- Nr 4 Cowling
- 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.