# SDR ASAA2014081708867

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 17, 2014
- Submitted: August 20, 2014
- Operation: Air carrier
- Aircraft: [N563AS](https://openairdocs.org/aircraft/N563AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35180
- Aircraft time: 30,149 hours, 9,199 cycles
- System (JASC): [2120 · Air Distribution System](https://openairdocs.org/jasc/2120)
- Part: Filter
- Part number: 412N10313
- Condition: Dirty
- Location: Temp Sensor
- Stage of operation: TX
- How discovered: O
- Nature of condition: J
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2014081708867

## Discrepancy

DURING RECALL,  AFT CABIN ZONE LIGHT ILLUMINATED.  RESETS WITH MASTER CAUTION RESET. ACFT GROUNDED.  PERFORMED PACK/ZONE TEMPERATURE CONTROLLER BITE TEST REF MM21-51-00. FOUND STANDBY PACK CONTROLLER FAULT LOGGED ON NR 2 TEMP CONTROLLER.  RESET FAULT AND OPERATED BOTH PACKS FOR 20 MIN +.  RECHECKED NR 2 TEMP.  CONTROLLER FOR FAULTS, PERFORMED PACK/ZONE TEMP CONTROLLER BITE SEVERAL TIMES.  OPS NORMAL.  NO FAULTS NOTED. ALSO FOUND AFT CABIN TEMP SENSOR FILTER DIRTY. REPLACED FILTER REF MM21-61-06.

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