What was found
NR 1 ENG, PNEU LEAKAGE NOISE FROM UNDER COWLING. FOUND AIR LEAK FROM PRECOOLER. NR 1 ENG AIR LEAK FROM PRECOOLER, ALSO FAILS LEAKAGE TEST. RECEIVED PARTS AND TOOLING 0030. PRECOOLER REMOVED AT 0200. REPLACED L ENG PRECOOLER.
- Difficulty date
- January 6, 2011
- Submitted
- February 3, 2011
- Operation
- Air carrier
- Aircraft
- N210UA
- Make and model
- Boeing 777222
- Aircraft serial
- 30216
- Aircraft time
- 39,052 hours, 8,611 cycles
- Engine
- Pwa PW4077
- System (JASC)
- 3610 · Pneumatic Distribution System
- Part
- Precooler
- Part number
- 23417441
- Part serial
- 18294
- Condition
- Leaking
- Location
- Cabin Air
- 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.