# SDR ASAA2015081712909

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 17, 2015
- Submitted: August 19, 2015
- Operation: Air carrier
- Aircraft: [N563AS](https://openairdocs.org/aircraft/N563AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35180
- Aircraft time: 33,862 hours, 10,289 cycles
- System (JASC): [2910 · Hydraulic System, Main](https://openairdocs.org/jasc/2910)
- Part: Drain Mast
- 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/ASAA2015081712909

## Discrepancy

POSSIBLE CRACK ON APU/HYDRAULIC SHROUD DRAIN, AFT UPPER DRAIN MOUNT.  ACFT GROUNDED. REPLACED APU SHROUD DRAIN/HYD VENT DRAIN MAST REF MM 28-25-07.  APPLIED STENCIL TO DRAIN MAST REF MM 51-21-99, EXTERIOR MARKING MANUAL SECT.3, PG16.

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