# SDR ASAA2016121519059

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 15, 2016
- Submitted: December 19, 2016
- Operation: Air carrier
- Aircraft: [N518AS](https://openairdocs.org/aircraft/N518AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35693
- Aircraft time: 30,389 hours, 8,997 cycles
- System (JASC): [4930 · APU Engine Fuel and Control](https://openairdocs.org/jasc/4930)
- Part: Drain
- Part number: 346A28015
- Condition: Cracked
- Location: Apu
- 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/ASAA2016121519059

## Discrepancy

APU DRAIN MAST CRACKED ON AFT EDGE. ACFT GROUNDED. VERIFIED 0.80 INCH CRACK W/ HFEC MM NDT- PART 6 51-0-0 NR 23. REMOVED APU DRAIN MAST IAW AMM 28-25-07-020-801. INSTALLED APU DRAIN MAST IAW AMM 28-25-07-420-801.

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