# SDR AALA20170221020

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 17, 2017
- Submitted: February 21, 2017
- Operation: Air carrier
- Aircraft: N377AN
- Make and model: Boeing 767323
- Aircraft serial: 25446
- Aircraft time: 99,490 hours, 15,871 cycles
- System (JASC): [2160 · Cabin Temperature Control System](https://openairdocs.org/jasc/2160)
- Part: Switch
- Part number: SWIR034
- Condition: Faulty
- Location: Zone 100
- Stage of operation: CR
- How discovered: O
- Nature of condition: S
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA20170221020

## Discrepancy

DURING CRUISE THE CABIN TEMPERATURE BECAME UNCONTROLLABLE.   EMERGENCY DECLARED. RETURNED TO DEPARTURE. AIRCRAFT WAS GROUNDED.  MAINTENANCE FOUND LEFT PACK TURBINE INLET TEMPERATURE BULB CONNECTOR PLUG D1338 DISCONNECTED, RECONNECTED FOUND RIGHT PACK COMPRESSOR OUTLET OVERHEAT SWITCH CONNECTOR PLUG D1562 DISCONNECTED, RECONNECTED.  REMOVED AND REPLACED RIGHT COMPRESSOR OUTLET SWITCH AND RIGHT FLOW CONTROL CARD IAW  AMM 21-51-09. SYSTEM CHECKED NORMAL.

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