What was found
OIL/ FUEL HEAT EXCHANGER RUN ON TORQUE FAILED ON #1 ENGINE. GROUNDED - YES. REMOVED AND REPLACED MAIN OIL/ FUEL HEAT EXCHANGER REF AMM 79-21-02-400-801-FOO.
- Difficulty date
- August 25, 2021
- Submitted
- August 30, 2021
- Operation
- Air carrier
- Aircraft
- N581AS
- Make and model
- Boeing 737890
- Aircraft serial
- 35188
- Aircraft time
- 50,528 hours, 15,001 cycles
- Engine
- Cfmint CFM567B27
- System (JASC)
- 7311 · Engine Fuel/Oil Cooler
- Part
- Heat Exchanger
- Part number
- 453328039
- Part serial
- YB0278811
- Condition
- Failed
- Location
- Nr 1 Eng Fuel
- Part time
- 50,013 hours, 15,788 cycles
- Stage of operation
- IN
- How discovered
- 9
- Nature of condition
- J
- Precautionary procedure
- K
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.