# SDR ASAA2013042994647

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 29, 2013
- Submitted: May 1, 2013
- Operation: Air carrier
- Aircraft: [N597AS](https://openairdocs.org/aircraft/N597AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35689
- Aircraft time: 19,290 hours, 6,054 cycles
- System (JASC): [2150 · Cabin Cooling System](https://openairdocs.org/jasc/2150)
- Part: Acm
- Part number: 22064002
- Part serial: 5688
- Condition: Failed
- Location: Right
- Part time: 19,290 hours, 6,054 cycles
- Stage of operation: IN
- How discovered: C
- Nature of condition: L
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2013042994647

## Discrepancy

DURING PACK HIGH FLOW INHIBIT CHECK WITH RT OFF, LT PACK DID NOT INDICATE GOING TO LOW FLOW WHEN FLAPS 1 WAS SELECTED.  CABIN SHOULD RATE UP,  IT RATED DOWN APPROX 600 FPM.  ACFT GROUNDED.  REPLACED LT PACK FLOW CONTROL AND SHUTOFF VALVE REF AMM 21-51-01. LEAK AND OPS CHECK GOOD REF AMM 21-51-01.  REPLACED LT PACK ACM REF AMM 21-51-04.  ACCOMPLISHED ACM INSTALLATION TEST REF AMM 21-51-04, TEST GOOD.

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