# SDR FDEA202607170942

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 17, 2026
- Submitted: July 20, 2026
- Operation: Air carrier
- Aircraft: [N285FE](https://openairdocs.org/aircraft/N285FE), registered now
- Make and model: Boeing 767-300
- Registry model: [Boeing 767-300](https://openairdocs.org/model/boeing-767-300) (OpenAirDocs)
- Aircraft serial: 63140
- Aircraft time: 4,652 hours, 2,318 cycles
- System (JASC): [2150 · Cabin Cooling System](https://openairdocs.org/jasc/2150)
- Part: Sensor
- Part number: 6259253
- Part serial: 62592821753
- Condition: Faulted
- Location: Zone 400
- Stage of operation: CR
- How discovered: O
- Nature of condition: J
- Precautionary procedure: B, A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/FDEA202607170942

## Discrepancy

FLIGHT DISPATCHED SINGLE PACK MEL. AT FL320 WORKING  PACK (R) PACK EICAS MESSAGES RT PACK TEMP AND RT PACK  OFF APPEARED. RAN QRH WHILE EXECUTING DESCENT TO  10000 FT. RETURNED TO MEM UNPRESSURIZED.   AMM: 21-51-19-2 , FIM: 21-51 FT844,   REMOVED AND REPLACED COMPRESSOR OUTLET OVERHEAT SWITCH S556. LEAK CHECK GOOD. RT PACK WENT INOPERATIVE DURING OPS CHECK PERFORMED BITE TEST OF RT PACK TEMPERATURE CONTROLLER FOUND COMPRESSOR OUTLET TEMPERATURE SENSOR FAULT TS42. RT PACK OPS CHKD GOOD IN STANBY MODE. STILL REQUIRES MORE TROUBLESHOOTING. AMM: 21-51-06-4, REMOVED AND REPLACED RT PACK AUTOMATIC COMPRESSOR DISCHARGE TEMPERATURE SENSOR PER ABOVE AMM.  REQUIRES OPS AND LEAK CHECK.

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