What was found
LEFT ENGINE OIL LEAK OUT OF LIMITS. LEAK FROM NR 5 DRAIN. FOUND LEAK AT FUEL OIL HEAT EXCHANGER. REMOVED NR 1 ENG FUEL OIL HEAT EXCHANGER AND BYPASS VLV. REPLACED, LEAK CHECKED AND ENGINE RUNS WERE GOOD.
- Difficulty date
- April 15, 2008
- Submitted
- April 17, 2008
- Operation
- Air carrier
- Aircraft
- N596UA
- Make and model
- Boeing 757222
- Aircraft serial
- 28749
- Aircraft time
- 40,478 hours, 11,243 cycles
- Engine
- Pwa PW2037
- Engine time
- 50,047 hours, 17,277 cycles
- System (JASC)
- 7261 · Turbine Engine Oil System
- Part
- Heat Exchanger
- Part number
- 471111171
- Condition
- Leaking
- Location
- Lt Engine
- Stage of operation
- IN
- How discovered
- 9
- Nature of condition
- K
- Precautionary procedure
- K
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.