# SDR ASAA0956711

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 28, 2009
- Submitted: October 5, 2009
- Operation: Air carrier
- Aircraft: [N566AS](https://openairdocs.org/aircraft/N566AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35181
- Aircraft time: 10,678 hours, 3,356 cycles
- System (JASC): [2420 · AC Generation System](https://openairdocs.org/jasc/2420)
- Part: Stator
- Part number: 9387M17P09
- Part serial: HTL20864
- Condition: Out Of Tolerance
- Location: Nr 2 Alternator
- Part time: 10,715 hours, 3,367 cycles
- Stage of operation: IN
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA0956711

## Discrepancy

NR 2 ENGINE SHOWS FMC CDU SHORT TIME FAULT CODE 73-21272 "THE ALTERNATOR VOLTAGE INPUT TO THE EEC IS OUT OF RANGE".  PLT DEFERRED MAINT.  REPLACED STATOR ALTERNATOR AND ROTOR ALTERNATOR REF MM 73-21-08-000-801-F00.  REQ TESTS 13-3A ACCOMPLISHED INSTALLATION OF NR 2 ENG STATOR ALTERNATOR AND TEST PER AMM 73-21-08-400-801-F00, OPS CHECKED OK.  ACCOMPLISHED TEST 3A IDLE POWER LEAK CHECK REF AMM 71-00-00-700-801-F00 AND TEST 13 ENGINE RUN ECC BITE CHECK REF AMM 71-00-00-700-808-F00, LEAK CHECKED OK & BITE CHECKED OK.  NO FAULTS DETECTED, NOTIFIED SEAMC.

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