# SDR IPXA2018122197078

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 19, 2018
- Submitted: December 21, 2018
- Operation: Air carrier
- Aircraft: [N256UP](https://openairdocs.org/aircraft/N256UP), registered now
- Make and model: Doug MD-11F
- Registry model: [Doug MD-11F](https://openairdocs.org/model/mcdonnell-douglas-md-11f) (OpenAirDocs)
- Aircraft serial: 48405
- Aircraft time: 85,133 hours, 17,798 cycles
- System (JASC): [2120 · Air Distribution System](https://openairdocs.org/jasc/2120)
- Part: Unknown
- Condition: Odor
- Location: Cockpit
- Stage of operation: CL
- How discovered: O
- Nature of condition: B
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/IPXA2018122197078

## Discrepancy

AIR TURN BACK DUE TO FUMES IN THE COCKPIT DURING CLIMBOUT. TROUBLESHOT IAW FIM 49-00-26-00. NO DEFECTS NOTED. INSPECTED ENGINES, HYD COMPONENTS, PACKS, AND RECIRCULATION FANS. NO FAULTS FOUND. REPLACED ALL THREE PACKS COALESCER BAGS IAW MM 21-54-05. RAN ENGINES AT HIGH POWER WITH NO FUMES OR ODOR IN COCKPIT.

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