# SDR ASAA2023072244184

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 22, 2023
- Submitted: July 24, 2023
- Operation: Air carrier
- Aircraft: [N459AS](https://openairdocs.org/aircraft/N459AS), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 36352
- Aircraft time: 34,886 hours, 10,948 cycles
- System (JASC): [8000 · Engine Starting System](https://openairdocs.org/jasc/8000)
- Part: Unknown
- Part number: UNKNOWN
- Condition: Unknown
- Location: Unknown
- Stage of operation: IN
- 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/ASAA2023072244184

## Discrepancy

WHILE ACCOMPLISHING T/C 78273000, FOUND ENG #1 SHORT TERM FAULT. CODE 73-30311. "THE START SWITCH SIGNAL AND ARINC BUS DATA DISAGREE. GROUNDED - YES. (RESOLVED ON W/O: 1961838 TASKCARD: N/R-00004 ) ACCOMPLISHED FIM 73-24 TASK 813 WITH NO RECENT FAULTS. FAULT HISTORY SHOWS FAULT ACTIVE FLIGHT LEG 10 ONLY. INSPECTED CONNECTIONS AT S266. REF. WDM 74-31-11 & 80-11-11. NO DEFECTS NOTED. ETOPS SIGNIFICANT SYSTEM. EEC TEST PASSES WITH ENGINE 1 START SWITCH IN ALL POSITIONS & CORRECT DISCRETE INPUTS AT DEU'S. THIS CLEARS PLT DEFERRAL C/N 22004459. SEAMC CARL NOTIFIED.

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