# SDR CALA2026011412941

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 11, 2026
- Submitted: January 14, 2026
- Operation: Air carrier
- Aircraft: [N17356](https://openairdocs.org/aircraft/N17356), registered now
- Make and model: Boeing 737-8
- Registry model: [Boeing 737-8](https://openairdocs.org/model/boeing-737-8) (OpenAirDocs)
- Aircraft serial: 67625
- Aircraft time: 4,861 hours, 1,646 cycles
- System (JASC): [2150 · Cabin Cooling System](https://openairdocs.org/jasc/2150)
- Part: Acm
- Part number: 22064002
- Part serial: 3062
- Condition: Seized
- Location: Left
- Part time: 64,194 hours, 23,173 cycles
- Stage of operation: TX
- How discovered: O
- Nature of condition: J, B
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CALA2026011412941

## Discrepancy

LEFT PACK LIGHT ILLUM AFTER LANDING.  RAN QRC & LIGHT STILL ON.  LT PACK LIGHT COMES ON WHEN LT PACK IS RUNNING.  LT PACK LIGHT EXTINGUISHED, ECS PACK LITE IS OFF WHEN SWITCH IS OFF,  RESET PACK LIGHT & RAN LT PACK, WHILE RUNNING,   BURNING ODOR IN FLT DECK, 5 MINS AFTER START, LT PACK SHUTDOWN & LT PACK LIGHT BACK.  MEL 2151AM,  ACFT OOS.   RAN LT PACK & SMOKE FILLED CABIN.  LT PACK OFF & LIGHT ILUMINATED.  INSPECTED HEAT EXCHANGER THROUGH PLENUM-DIFFUSER ACCESS PANELS & NO DEBRIS. LT PACK NOT INTAKING AIR OR BLOWING AIR THROUGH EXHAUST,  SUSPECTED BAD ACM.  FOUND LT PACK SEIZED.  REMOVED LT PACK, IAW AMM 21-51-04.   INSTALLED LT ACM IAW AMM 21-51-04-400-801.  OPS TEST PASSED, NO LEAKS. ACFT OK TO CONTINUE.

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