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The pilot of an aeronca sedan suffered a runway excursion upon landing with the left brake fully engaged due to a brake system malfunction.
| Attributes | |
| ACN | 869389 |
| Time | |
| Date | 201001 |
| Local Time Of Day | 0601-1200 |
| Place | |
| Locale Reference | ZZZ.Airport |
| State Reference | US |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Make Model Name | Small Aircraft |
| Operating Under FAR Part | Part 91 |
| Flight Phase | Landing |
| Flight Plan | None |
| Component | |
| Aircraft Component | Brake System |
| Person 1 | |
| Function | Single Pilot Captain Pilot Flying |
| Qualification | Flight Crew Multiengine Flight Crew Instrument Flight Crew Flight Instructor Flight Crew Air Transport Pilot (ATP) Flight Crew Flight Engineer |
| Experience | Flight Crew Last 90 Days 180 Flight Crew Total 14900 Flight Crew Type 90 |
| Events | |
| Anomaly | Aircraft Equipment Problem Critical Ground Excursion Runway Inflight Event / Encounter Loss Of Aircraft Control |
Narrative:
Upon touchdown I discovered the left brake was locked to the fully applied position. The aircraft swerved left and the tail rose rapidly upon touchdown. I attempted directional control with rudder and opposite brake but it was quickly apparent any application of right brake caused the tail to raise bringing the prop within inches of the runway. I pulled the mixture and turned off the ignition just before the left tire caught the edge of the 30 inch high snowbank on the west side of the runway. The drag of the snowbank pulled the aircraft 90 degrees from the runway heading and pitched the nose down into the snow. No injuries resulted from this incident but the prop stuck the ice hardened snowbank so an engine inspection is needed. The brake master cylinder appeared to be locked up and did not release until forced with a large screwdriver. There was no indication of drag from the left brake during taxi or takeoff at the departure airport. Touchdown was 3 point at 60 mph and the total ground roll was 200 ft. So in less than 3 seconds from touchdown I was in the snow.
Original NASA ASRS Text
Title: The pilot of an Aeronca Sedan suffered a runway excursion upon landing with the left brake fully engaged due to a brake system malfunction.
Narrative: Upon touchdown I discovered the left brake was locked to the fully applied position. The aircraft swerved left and the tail rose rapidly upon touchdown. I attempted directional control with rudder and opposite brake but it was quickly apparent any application of right brake caused the tail to raise bringing the prop within inches of the runway. I pulled the mixture and turned off the ignition just before the left tire caught the edge of the 30 inch high snowbank on the west side of the runway. The drag of the snowbank pulled the aircraft 90 degrees from the runway heading and pitched the nose down into the snow. No injuries resulted from this incident but the prop stuck the ice hardened snowbank so an engine inspection is needed. The brake master cylinder appeared to be locked up and did not release until forced with a large screwdriver. There was no indication of drag from the left brake during taxi or takeoff at the departure airport. Touchdown was 3 point at 60 MPH and the total ground roll was 200 FT. So in less than 3 seconds from touchdown I was in the snow.
Data retrieved from NASA's ASRS site as of April 2012 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.