What was found
CRACKED DUCT , NR 1 ENG RT CORE COWL PRECOOLER EXHAUST DUCT. IAW AMM 71-11-06-004-001-J00, REV 117, AND AMM 71-11-06-404-006-J00, REV 117, REPLACED THE CORE COWL . COMPLETED THIS JOB AND CONDITION CHECK SATISFACTORY.
- Difficulty date
- June 21, 2026
- Submitted
- July 17, 2026
- Operation
- Air carrier
- Aircraft
- N583UP
- Make and model
- Boeing 7474R7F
- Aircraft serial
- 25867
- Aircraft time
- 138,855 hours, 23,452 cycles
- System (JASC)
- 5400 · Nacelle/Pylon Structure
- Part
- Duct
- Part number
- 2242302545
- Part serial
- 6149001
- Condition
- Cracked
- Location
- Zone 400
- 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.