# SDR CA040528007

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 15, 2004
- Submitted: November 2, 2004
- Operation: General aviation
- Make and model: Piper PA-31
- Registry model: [Piper PA-31](https://openairdocs.org/model/piper-pa-31) (OpenAirDocs)
- Aircraft time: 12,118 hours
- Engine: Lyc TIO540A2C
- Propeller: Hartzl HCE3YR2
- System (JASC): [3242 · Brake](https://openairdocs.org/jasc/3242)
- Part: O-Ring
- Part number: MS28775132
- Condition: Cut
- Location: Brake System
- Stage of operation: LD
- How discovered: O
- Nature of condition: K
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CA040528007

## Discrepancy

UPON LANDING, THE LEFT BRAKE DID NOT WORK.  TWO O-RINGS IN THE BRAKE ASSEMBLY WERE DISCOVERED TWISTED AND CUT WHICH CAUSED A LARGE BRAKE FLUID LEAK.  THE O-RINGS WERE REPLACED, THE SYSTEM WAS BLED AND TESTED.

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