# SDR AALA20160213003

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 13, 2016
- Submitted: February 16, 2016
- Operation: Air carrier
- Aircraft: N9677W
- Make and model: Doug DC-9-83
- Registry model: [Doug DC-9-83](https://openairdocs.org/model/douglas-dc-9-83) (OpenAirDocs)
- Aircraft serial: 53627
- Aircraft time: 46,234 hours, 22,763 cycles
- System (JASC): [2150 · Cabin Cooling System](https://openairdocs.org/jasc/2150)
- Part: A/C Pack
- Condition: Failed
- Location: Ac Bay
- Stage of operation: CR
- How discovered: O
- Nature of condition: J
- Precautionary procedure: H
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA20160213003

## Discrepancy

TOPPING CIRCUIT ON LT PACK FAILED.  SINGLE PACK OPERATION & LT PACK SHUTDOWN DUE TO OVER TEMP & HEAT.  RUNNING IN AUTO AT FL 250, PRESSURIZATION FLOW LIGHT CAME ON, SUPPLY TEMP SHOWED 158 DEGREES & PACK RETURNED AFTER COOL DOWN & DESCENT TO 14,000 FEE.  PRESSURIZED LT PACK FOR 20 MINUTES WITH SELECTOR IN AUTO.  MANUAL COOL & MANUAL HOT POSITION, OPERATIONS CHECK NORMAL IAW MM 21-00-00.  THE ACFT WAS GNDED.

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