# SDR CWQA20210601001

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 27, 2021
- Submitted: June 1, 2021
- Operation: Air carrier
- Aircraft: [N54YR](https://openairdocs.org/aircraft/N54YR), registered now
- Make and model: Amd FALCON50MYST
- Aircraft serial: 333
- Aircraft time: 6,657 hours, 3,584 cycles
- System (JASC): [3241 · Brake Anti-Skid Section](https://openairdocs.org/jasc/3241)
- Part: Amplifier
- Part number: 60026143
- Part serial: MAY81120
- Condition: Intermittent
- Location: Anti-Skid System
- Part time: 618 hours, 370 cycles
- Stage of operation: LD
- 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/CWQA20210601001

## Discrepancy

JUST AFTER LANDING, CREW NOTICED A MOMENTARY LOSS OF #1 BRAKES.  MAINTENANCE EVALUATION COULD NOT DUPLICATE ISSUE, HOWEVER SUSPECT CAUSE TO BE ANTISKID AMPLIFIER, REPLACED ANTISKID AMPLIFIER P/N OFF 6002614-3 S/N OFF MAY81-120.  GROUND FLIGHT RELAYS 46G AND 47G P/N 316202DBQ28 REPLACED AS PRECAUTION.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.