# SDR FDEA201402040259

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 4, 2014
- Submitted: February 27, 2014
- Operation: Air carrier
- Aircraft: [N529FE](https://openairdocs.org/aircraft/N529FE), registered now
- Make and model: Doug MD-11F
- Registry model: [Doug MD-11F](https://openairdocs.org/model/mcdonnell-douglas-md-11f) (OpenAirDocs)
- Aircraft serial: 48624
- Aircraft time: 43,793 hours, 8,960 cycles
- System (JASC): [3010 · Airfoil Anti/De-ice System](https://openairdocs.org/jasc/3010)
- Part: Pressure Switch
- Part number: 11511661
- Part serial: 115C5312
- Condition: Failed
- Location: Anti-Ice Sys
- Stage of operation: CR
- How discovered: O
- Nature of condition: N
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/FDEA201402040259

## Discrepancy

WITH ANTI-ICE ON, RECEIVED WING ANTI-ICE LT DISAGREE.  LT ANTI-ICE VLV SHOWED DISAGREE ON SYNOPTIC & BLEED  PRESS ON SYS 1 WENT TO ZERO.  SECURED ANTI-ICE IAW QRH & BLEED PRESS RETURNED TO NORMAL.  DIVERTED  AND LANDED MSP WITHOUT INCIDENT.  REMOVED AND REPLACED L ANTI-ICE PRESS DIFF SWITCH REF M/M  30-11-02-4 AND PERFORMED WING ANTI-ICE ADJ/TEST REF M/M 30-11-00-5.  CHECKS GOOD, A/C OK FOR SERVICE.

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