# SDR ASAA2022122141316

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 21, 2022
- Submitted: December 30, 2022
- Operation: Air carrier
- Aircraft: [N972AK](https://openairdocs.org/aircraft/N972AK), registered now
- Make and model: Boeing 737-9
- Registry model: [Boeing 737-9](https://openairdocs.org/model/boeing-737-9) (OpenAirDocs)
- Aircraft serial: 43389
- Aircraft time: 3,002 hours, 863 cycles
- Engine: Cfmint LEAP1B28
- System (JASC): [7320 · Fuel Controlling System](https://openairdocs.org/jasc/7320)
- Part: Fadec
- Part number: 2474M64P06
- Part serial: FAKM3205
- Condition: Faulty
- Location: Nr 1 Engine
- Part time: 3,093 hours, 891 cycles
- Stage of operation: IN
- How discovered: V
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2022122141316

## Discrepancy

ENGINEERING REQUEST FOR T/S #1 ENG N1,N2 AND EGT PARAMETER DISAPPEARED IN FLIGHT. FOLLOW T/S STEPS AS MENTIONED IN DEFER TAB. GROUNDED - YES. REMOVED AND REPLACED EEC -CHANNEL B ENGINE #1 IN REFERENCE WITH BOEING B737-9 AMM 73-21-05.

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