# SDR ASAA2022071339073

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 13, 2022
- Submitted: July 15, 2022
- Operation: Air carrier
- Aircraft: [N977AK](https://openairdocs.org/aircraft/N977AK), registered now
- Make and model: Boeing 737-9
- Registry model: [Boeing 737-9](https://openairdocs.org/model/boeing-737-9) (OpenAirDocs)
- Aircraft serial: 43391
- Aircraft time: 67 hours, 36 cycles
- Engine: Cfmint LEAP1B28
- System (JASC): [7310 · Engine Fuel Distribution](https://openairdocs.org/jasc/7310)
- Part: Pressure Switch
- Part number: 2492M60P02
- Part serial: KUL29576
- Condition: Faulty
- Location: #1 Engine
- Part time: 67 hours, 36 cycles
- Stage of operation: TO
- How discovered: V
- Nature of condition: J
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2022071339073

## Discrepancy

#1 ENG FILTER BYPASS LIGHT ON DEPARTURE. GROUNDED - YES. REMOVED AND REPLACED #1 ENG MAIN FUEL/OIL HEAT EXCHANGER DIFFERENTIAL PRESS SWITCH. REF B737-9 AMM 73-11-12-000-801-G00/-400-801-G00.

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