# SDR DALA2018032001807

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 20, 2018
- Submitted: March 20, 2018
- Operation: Air carrier
- Aircraft: [N557NW](https://openairdocs.org/aircraft/N557NW), registered now
- Make and model: Boeing 757251
- Aircraft serial: 33393
- Aircraft time: 45,832 hours, 20,055 cycles
- System (JASC): [2210 · Autopilot System](https://openairdocs.org/jasc/2210)
- Part: Autopilot Sys
- Condition: Tripped
- Stage of operation: AP
- How discovered: O
- Nature of condition: F
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/DALA2018032001807

## Discrepancy

ALL THREE AUTOPILOTS TRIPPED OFF DURING APPROACH.  COMPLETED MCDP TEST 30,  AND TEST 40 ,AUTO LAND IAW FIM 22-00-03,  NO FAULTS NOTED.

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