# SDR ASAA2023092645334

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 26, 2023
- Submitted: September 27, 2023
- Operation: Air carrier
- Aircraft: [N408AS](https://openairdocs.org/aircraft/N408AS), registered now
- Make and model: Boeing 737-900ER
- Registry model: [Boeing 737-900ER](https://openairdocs.org/model/boeing-737-900er) (OpenAirDocs)
- Aircraft serial: 41732
- Aircraft time: 39,774 hours, 12,591 cycles
- System (JASC): [7320 · Fuel Controlling System](https://openairdocs.org/jasc/7320)
- Part: Unknown
- Part number: UNKNOWN
- Condition: Unknown
- Location: Unknown
- Stage of operation: IN
- How discovered: O
- Nature of condition: J
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2023092645334

## Discrepancy

PER T/C 78273000 IN W/O 1970032, MSG NBR 73-30312 "THE START SWITCH SIGNAL AND ARINC BUS DATA DISAGREE FOR ENGINE 2 DUAL CHANNEL FAULT. ONFLIGHT LEG #2. GROUNDED - YES. PER B737-900 FIM 73-00 TASK 813 ENG #2 STORED FAULT INTERROGATED. NO FAULT NOTED-EEC TEST ACCOMPLISHED-IN GROUND - GRD-IN CONT-IN FLT NO MAINTENANCE MSG SHOWN ON THE FMCS CDU NO ACTIVE FAULT OBSERVED DEFECT CLEARED.

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