# SDR ASAA2015011610276

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 16, 2015
- Submitted: January 20, 2015
- Operation: Air carrier
- Aircraft: [N581AS](https://openairdocs.org/aircraft/N581AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35188
- Aircraft time: 29,556 hours, 9,050 cycles
- System (JASC): [2150 · Cabin Cooling System](https://openairdocs.org/jasc/2150)
- Part: Actuator
- Part number: 5416744
- Part serial: 12600
- Condition: Malfunctioned
- Location: Ram Air
- Part time: 25,078 hours, 7,798 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/ASAA2015011610276

## Discrepancy

RT RAM AIR LINLET AREA EMITTING A HUMMING SOUND.  ACFT GROUNDED.  REPLACED RT RAM AIR ACTUATOR IAW AMM 21-51-21.

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