# SDR ASAA2021040634520

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 6, 2021
- Submitted: April 12, 2021
- Operation: Air carrier
- Aircraft: [N433AS](https://openairdocs.org/aircraft/N433AS), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 41704
- Aircraft time: 28,205 hours, 9,003 cycles
- Engine: Cfmint CFM567B27E
- System (JASC): [7311 · Engine Fuel/Oil Cooler](https://openairdocs.org/jasc/7311)
- Part: Heat Exchanger
- Part number: 453328039
- Part serial: YB043669
- Condition: Leaking
- Location: Nr 2 Engine
- Part time: 28,248 hours, 9,015 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/ASAA2021040634520

## Discrepancy

FUEL DRIPPING FROM UNDERSIDE OF ENGINE #2. GROUNDED - YES. FOUND FUEL LEAK COMING FROM MAIN OIL/FUEL HEAT EXCHANGER PAD DRAIN APPROX <60 DPM, LESS THAN SERVICEABLE LIMIT, REF B737-900 AMM 71-71-00-200-801 FIG 605. REMOVED AND REPLACED #2 ENGINE OIL/FUEL HEAT EXCHANGER REF AMM 79-21-02-000-801-F00 AND AMM 79-21-02-400-801-F00. IDLE LEAK CHECK GOOD.

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