# SDR IPXA2017091821850

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 15, 2017
- Submitted: September 18, 2017
- Operation: Air carrier
- Aircraft: [N251UP](https://openairdocs.org/aircraft/N251UP), registered now
- Make and model: Doug MD-11F
- Registry model: [Doug MD-11F](https://openairdocs.org/model/mcdonnell-douglas-md-11f) (OpenAirDocs)
- Aircraft serial: 48744
- Aircraft time: 57,065 hours, 12,068 cycles
- System (JASC): [3020 · Air Intake Anti/De-Ice System](https://openairdocs.org/jasc/3020)
- Part: Control Unit
- Part number: 3500920
- Part serial: UNK
- Condition: Malfunctioned
- Location: Anti Ice
- Stage of operation: CL
- How discovered: O
- Nature of condition: N
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/IPXA2017091821850

## Discrepancy

DURING CLIMBOUT,  HAD A LEVEL 1 NR 2 ENG ANTI-ICE OFF ALERT.  R & R THE ANTI ICE DUCT LEAK DETECTION CONTROL UNIT IAW AMM 30-22-10, AND THE ENGINE COWL ANTI-ICE MANIFOLD FAILURE SENSOR IAW AMM 30-42-11. SYSTEM CHECKED GOOD.

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