# SDR DXTA2021120753130

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 6, 2021
- Submitted: December 7, 2021
- Operation: Air carrier
- Aircraft: [N679QS](https://openairdocs.org/aircraft/N679QS), registered now
- Make and model: Cessna 680A
- Registry model: [Cessna 680A](https://openairdocs.org/model/cessna-680a) (OpenAirDocs)
- Aircraft serial: 680A0257
- Aircraft time: 1,101 hours, 746 cycles
- System (JASC): [2120 · Air Distribution System](https://openairdocs.org/jasc/2120)
- Part: Unknown
- Condition: Smoke
- Location: Cabin/Cockpit
- Stage of operation: LD
- 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/DXTA2021120753130

## Discrepancy

CABIN SMOKE: ON LANDING ROLL AND SHORTLY AFTER APPLYING THE BRAKES, SMOKE BECAME PRESENT IN BOTH CABIN AND COCKPIT.  SMOKE/FIRE/FUME QRC WAS ACCOMPLISHED.  PRESS SOURCE WAS TURNED OFF AND SMOKE BEGAN TO DISSIPATE.  REMOVED AND REPLACED APU REF 680A MM 49-10-00. (SEE SQUAWK 4). OPS AND LEAK CHECKS GOOD. NO SMOKE/HAZE/ODOR NOTED DURING ENG OR APU RUNS WITH BLEED AIR ON.

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