Service difficulty report · Heat Exchanger · Boeing 7673CB
FAA SDR system
- Difficulty date
- May 19, 2011
- Submitted
- May 20, 2011
- Operation
- Air carrier
- Aircraft
- N590HA
- Make and model
- Boeing 7673CB
- Aircraft serial
- 33467
- Aircraft time
- 32,778 hours, 6,097 cycles
- Engine
- Pwa PW4060
- Part
- Heat Exchanger
- Part number
- 1562200000
- Part serial
- 100
- Condition
- Leaking
- Location
- Nr 1 Engine
- Part time
- 33,452 hours, 6,193 cycles
- Stage of operation
- CR
- How discovered
- O
- Nature of condition
- K, J
- Precautionary procedure
- O
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ETOPS SIGNIFICANT SYS - LEFT ENGINE APPEARS TO BE LOSING OR CONSUMING OIL. BEFORE ENGINE START: L-20; R-23; AFTER ENG START: L-9; R-12; CRUISE 4 HRS IN FLT L-11; R-15. START OF CRUISE 12/15. TROUBLESHOT NR 1 ENGINE OIL & FOUND OIL COLLAR LEAKNG. REMOVED AIRFOIL HEAT EXCHANGER IAW AMM 79-21-09. REPLACED AIRFOIL HEAT EXCHANGER IAW AMM 79-21-09. BYPASS PANEL CLOSE UP PEND. CLOSED BYPASS OPS & LEAK CHECKED GOOD.