What was found
NR 1 ENG FAILED DUCT LEAK TEST. FOUND LARGE CRACK ON NR 1 ENG PRECOOLER. REPLACED PRECOOLER. AFT PRECOOLER CLAMP LEAKING AT HINGE POINTS. RE-SECURED, SECURED ENGINE COWLS.
- Difficulty date
- November 13, 2009
- Submitted
- November 17, 2009
- Operation
- Air carrier
- Aircraft
- N788UA
- Make and model
- Boeing 777222
- Aircraft serial
- 26942
- Aircraft time
- 55,236 hours, 8,089 cycles
- Engine
- Pwa PW40903
- System (JASC)
- 3610 · Pneumatic Distribution System
- Part
- Precooler
- Part number
- 23417441
- Part serial
- 1005
- Condition
- Cracked
- Location
- Bleed Air Sys
- Stage of operation
- IN
- 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.