# SDR ASAA2013111596409

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 15, 2013
- Submitted: November 18, 2013
- Operation: Air carrier
- Aircraft: [N577AS](https://openairdocs.org/aircraft/N577AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35186
- Aircraft time: 25,461 hours, 7,642 cycles
- System (JASC): [4940 · APU Start/Ignition System](https://openairdocs.org/jasc/4940)
- Part: Starter Gen
- Part number: 28B5457STYLEC
- Part serial: 105B0321
- Condition: Cracked
- Location: Apu
- Part time: 4,200 hours, 7,153 cycles
- Stage of operation: IN
- How discovered: V
- Nature of condition: K
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2013111596409

## Discrepancy

M/C REPORTS THE APU OIL CONSUMPTION HAS SPIKED.  ACFT GROUNDED. TROUBLESHOT AND FOUND APU OIL LEAKING FROM CRACKED STARTER GENERATOR HSG REF FIM 49-90-00-810-813. REPLACED APU STARTER-GENERATOR REF AMM 49-41-21-000-801 AND AMM 49-41-21-400-801. OPS CHECK APU NORMAL, OIL SERVICED TO FULL.

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