# SDR ASAA2023053043453

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 30, 2023
- Submitted: June 5, 2023
- Operation: Air carrier
- Aircraft: [N409AS](https://openairdocs.org/aircraft/N409AS), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 41733
- Aircraft time: 37,282 hours, 11,870 cycles
- System (JASC): [7300 · Engine Fuel and Control](https://openairdocs.org/jasc/7300)
- Part: Heat Exchanger
- Part number: 453328039
- Part serial: YB042925
- Condition: Leaking
- Location: Nr 2 Engine Fuel
- 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/ASAA2023053043453

## Discrepancy

#2 ENG FUEL LEAK FROM HEAT EXCHANGER. GROUNDED - YES.  REMOVED MAIN OIL/FUEL HEAT EXCHANGER REF B737-900 AMM 79-21-02-000-801-F00. REPLACED #2 ENG MAIN OIL/FUEL HEAT EXCHANGER REF AMM 79-21-02-400-801-F00. OPS/LEAK CHECK GOOD.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.