Service difficulty report · Heat Exchanger · Boeing 737890
FAA SDR system
- Difficulty date
- November 11, 2021
- Submitted
- November 24, 2021
- Operation
- Air carrier
- Make and model
- Boeing 737890
- Aircraft serial
- 35201
- Aircraft time
- 40,010 hours, 11,574 cycles
- Part
- Heat Exchanger
- Part number
- 453328039
- Part serial
- YB040648
- Condition
- Leaking
- Location
- Nr 1 Engine
- Stage of operation
- NR
- How discovered
- O
- Nature of condition
- K
- Precautionary procedure
- K
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
REF LOGPAGE 60234967 ENGINE #1 OIL/FILTER HEAT EXCHANGER PAD DRAINS LEAKING 17 DROPS PER MIN. GROUNDED - YES. REMOVED AND REPLACED MAIN OIL/FUEL HEAT EXCHANGER @ ENGINE #1 REF B737-800 MM 79-21-02-400-801-F00. REMOVED AND REPLACED SERVO FUEL HEATER @ ENGINE #1 REF AMM 73-11-07-400-801-F00. LEAK AND OPS CHECK OK.