# SDR P5CA2020111700384

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 16, 2020
- Submitted: November 18, 2020
- Operation: Air carrier
- Aircraft: N643GT
- Make and model: Boeing 767-3JHF
- Registry model: [Boeing 767-3JHF](https://openairdocs.org/model/boeing-767-3jhf) (OpenAirDocs)
- Aircraft serial: 37809
- Aircraft time: 18,974 hours, 5,125 cycles
- System (JASC): [2150 · Cabin Cooling System](https://openairdocs.org/jasc/2150)
- Part: Switch
- Part number: 6411371
- Part serial: 5651
- Condition: Malfunctioned
- Location: Lt A/C Pack
- Stage of operation: NR
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/P5CA2020111700384

## Discrepancy

LT PACK NO START, AFTER FEW SECONDS. "LT PACK OFF" EICAS MESSAGE AT LT PACK SW AUTO.  RE-RACKED LT PTC & RE-CONNECT COMPRESSOR OUTLET OVERHEAT SW THEN OPERATIONS NORMAL.  ALSO SW WIRING CHECKED OK AND REMOVE/REPLACED SW THEN OPERATIONS CHECK OK, PER FIM 21-51 TASK 876, WPM 21-51-11, AMM 21-51-19/201 & AMM 21-51-14/401.

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