# SDR DALA2026040602199

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 4, 2026
- Submitted: April 6, 2026
- Operation: Air carrier
- Aircraft: [N664DN](https://openairdocs.org/aircraft/N664DN), registered now
- Make and model: Boeing 757232
- Aircraft serial: 25012
- Aircraft time: 88,888 hours, 41,490 cycles
- System (JASC): [2150 · Cabin Cooling System](https://openairdocs.org/jasc/2150)
- Part: Acm
- Part number: 6806404
- Part serial: 701994
- Condition: Seized
- Location: Left
- Part time: 69,502 hours, 32,498 cycles
- Stage of operation: TX
- How discovered: O
- Nature of condition: B
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/DALA2026040602199

## Discrepancy

SMOKE IN COCKPIT AFTER LANDING.  ELECTRICAL/ACRID ODOR.  SMOKE AND ALSO FILLED MST OF THE CABIN AFTER ENGINE SHUT DOWN.  APPEARED TO BE FROM COCKPIT.  REMOVED AND REPLACED LEFT PACK ACM IAW AMM 21-51 AND 1(F).   REMOVED AND REPLACED LOW LIMIT VALVE AND REHEATER IAW AMM 21-51. OPS CHECKED GOOD, NO FAULTS. (7909233) (AIRCRAFT WAS GROUNDED)

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