What was found
NR 1 ENGINE PRECOOLER SEPARATED AT BASE. LARGE BLEED AIR LEAK. *S/D* FOUND AIR CONDITIONING SYSTEM LOWER PRECOOLER HOUSING TO FIN AREA CRACKED OPEN. REPLACED PRECOOLER (PN: 2340872-1, S/N 52-110).
- Difficulty date
- January 28, 2000
- Submitted
- October 4, 2000
- Operation
- Air carrier
- Aircraft
- N774UA
- Make and model
- Boeing 777222
- Aircraft serial
- 26936
- Aircraft time
- 13,774 hours, 4,073 cycles
- Engine
- Pwa PW4077
- System (JASC)
- 3610 · Pneumatic Distribution System
- Part
- Cooler
- Part number
- 23408721
- Part serial
- 52110
- Condition
- Separated
- Location
- Nr 1 Engine
- Part time
- 16,790 hours, 4,070 cycles
- Stage of operation
- UK
- How discovered
- O
- Nature of condition
- O
- Precautionary procedure
- O
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.