# SDR IPXA2020122163636

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 17, 2020
- Submitted: December 21, 2020
- 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: 87,230 hours, 18,858 cycles
- System (JASC): [3010 · Airfoil Anti/De-ice System](https://openairdocs.org/jasc/3010)
- Part: Anti-Ice Valve
- Condition: Warning Message
- Location: Cockpit
- Stage of operation: CL
- How discovered: O
- Nature of condition: J
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/IPXA2020122163636

## Discrepancy

INSPECTION TYPE: N/A DIVERSION ON CLIMBOUT THROUGH 10000 FT HAD LEVEL 2 TAIL A/I DISAG COMBINED WITH LEVEL 1 AIR SYS OFF, AIR SYS OFF CAME UP FIRST THEN THE DISAGREE.  RAN QRH PROCEDURES AND DEPARTED ICING.  DEFERRED TAIL ANTI ICE VALVE, PER MEL 30-11-1-2.  ACCOMPLISHED DMP 30-11-1-2.  CONTROL NUMBER M729599 ISSUED PLACARD INSTALLED.  RESEALED ANTI ICE DUCT AT RT HORIZONTAL STABILIZER OUTBOARD, PER MM 36-14-02-401.  OPERATIONS AND LEAK CHECK GOOD, PER AMM 30-12-00-700-801.  DMP REMAINS REVERSED M729599 CLEARED.

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