# SDR ASAA2022120541063

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 5, 2022
- Submitted: December 9, 2022
- Operation: Air carrier
- Aircraft: [N464AS](https://openairdocs.org/aircraft/N464AS), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 40714
- Aircraft time: 32,503 hours, 10,089 cycles
- Engine: Cfmint CFM567B27E
- System (JASC): [7311 · Engine Fuel/Oil Cooler](https://openairdocs.org/jasc/7311)
- Part: Heat Exchanger
- Part number: 453328039
- Part serial: YB044321
- Condition: Leaking
- Location: Nr 2 Fuel/Oil
- Part time: 32,520 hours, 10,099 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/ASAA2022120541063

## Discrepancy

FOUND #2 MAIN OIL/FUEL HEAT EXCHANGER PAD DRAIN. LEAKING. GROUNDED - YES. REMOVED AND REPLACED #2 ENG MAIN OIL/FUEL HEAT EXCHANGER REF B737-900 AMM 79-21-02-400-801-F00 LEAK CHECK AND OPS CHECK GOOD REF AMM 71-00-00-700-801-FOO TEST 3A.

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