# SDR IPXA2015021085779

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 3, 2015
- Submitted: February 11, 2015
- Operation: Air carrier
- Aircraft: N283UP
- Make and model: Doug MD-11F
- Registry model: [Doug MD-11F](https://openairdocs.org/model/mcdonnell-douglas-md-11f) (OpenAirDocs)
- Aircraft serial: 48484
- Aircraft time: 66,658 hours, 13,836 cycles
- System (JASC): [2120 · Air Distribution System](https://openairdocs.org/jasc/2120)
- Part: Control Unit
- Condition: Inoperative
- Location: Nr 2
- Stage of operation: NR
- How discovered: 9
- Nature of condition: B
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/IPXA2015021085779

## Discrepancy

FUMES IN FLIGHT PRESENT OXYGEN MASKS WERE USED AT 100 PERCENT EMERGENCY WAS DECLARED AT CRUISE, FL380.  DIVERT TO LIGHT PERFORMED GVI OF AVIONICS BAY EQUIPMENT RACKS & WIRING. ACFT FOUND NORMAL T/S ITEM 3 ON L/P 824502 FOUND ACU-2 FAILED SUSPECT ACU-2 CAUSE OF FUMES R & R ACU IAW 33-15-01-000 AND 400 TEST NORMAL.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.