# SDR ASAA2021040334498

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 3, 2021
- Submitted: April 8, 2021
- Operation: Air carrier
- Aircraft: [N431AS](https://openairdocs.org/aircraft/N431AS), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 43255
- Aircraft time: 27,799 hours, 8,974 cycles
- Engine: Cfmint CFM567B27E
- System (JASC): [7311 · Engine Fuel/Oil Cooler](https://openairdocs.org/jasc/7311)
- Part: Heat Exchanger
- Part number: 453328039
- Part serial: YB043538
- Condition: Leaking
- Location: Nr 2 Engine
- Part time: 27,844 hours, 8,992 cycles
- Stage of operation: IN
- How discovered: V
- Nature of condition: K
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2021040334498

## Discrepancy

FOUND FUEL DRIP ON #2 ENG FUEL OIL HEAT EXCHANGER DRAW LINE. GROUNDED - YES. REMOVED AND REPLACED FUEL OIL HEAT EXCHANGER REF B737-900 AMM 79-21-02 PERFORMED ENGINE RUN FOUND SERVO FUEL HEATER LEAKING REF L/P 60093288 FOR REMOVE AND REPLACEMENT.

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