# SDR FDEA2020010640017

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 4, 2020
- Submitted: January 6, 2020
- Operation: Air carrier
- Aircraft: [N951FD](https://openairdocs.org/aircraft/N951FD), registered now
- Make and model: Boeing 757236
- Aircraft serial: 28665
- Aircraft time: 33,985 hours, 23,797 cycles
- System (JASC): [3241 · Brake Anti-Skid Section](https://openairdocs.org/jasc/3241)
- Part: Control Unit
- Part number: 426412
- Part serial: 00166
- Condition: Failed
- Location: Anti-Skid Sys
- Stage of operation: LD
- How discovered: O
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/FDEA2020010640017

## Discrepancy

FOUND DURING WRI# 05-50/6574.  ANTISKID/AUTOBRAKE  CONTROL UNIT HAS MSG "BOX 1-5" THAT WILL NOT CLEAR.  DURING TRANSDUCER SPINUP TEST, TRANSDUCER #1  SPINUP DOES NOT RESULT IN RELEASE OF BRAKE #5.   REMOVED AND REPLACED ANTISKID/AUTOBRAKE CONTROL                                   UNIT REF B757 MM 32-42-01-4.  CONTROL UNIT                                        INSTALLATION TEST PASSED.  NEED TO ACCOMPLISH                                     ANTISKID TRANSDUCER SPINUP TEST PER MM 32-42-00-5     ACCOMPLISHED ANTISKID TRANSDUCER SPINUP TEST PER MM                               32-42-00-5 . OPS CHECKED NORMAL

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