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C170 lands with apparent left brake locked. Attempts to counter with right braking results in nose over.
| Attributes | |
| ACN | 747724 |
| Time | |
| Date | 200706 |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : zzz.airport |
| State Reference | US |
| Altitude | agl single value : 0 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tower : spi.tower |
| Operator | general aviation : personal |
| Make Model Name | Cessna 170 |
| Operating Under FAR Part | Part 91 |
| Flight Phase | landing : roll |
| Flight Plan | None |
| Person 1 | |
| Affiliation | other |
| Function | flight crew : single pilot |
| Qualification | pilot : atp pilot : cfi pilot : instrument pilot : multi engine |
| Experience | flight time last 90 days : 107 flight time total : 4100 flight time type : 128 |
| ASRS Report | 747724 |
| Events | |
| Anomaly | aircraft equipment problem : critical other anomaly |
| Independent Detector | other flight crewa |
| Resolutory Action | none taken : unable |
| Consequence | other |
| Supplementary | |
| Problem Areas | Aircraft |
| Primary Problem | Aircraft |
Narrative:
After a normal approach; the aircraft started veering to the left upon touchdown. I applied right rudder to correct but the turn persisted. The aircraft acted as if there was excessive braking action on the left main gear; yet I was applying no pressure to the left brake. I added right brake to compensate. The aircraft stopped turning and nosed over. I notified traffic in the pattern that the aircraft was still on the runway and exited. I then tried pushing the aircraft forward but it resisted so I swung it around 180 degrees by pushing rearward on the horizontal stabilizer and pushed it backward (and off the runway). I do not know what caused the uncommanded left braking. I had the aircraft taken to a repair facility for evaluation and repair.
Original NASA ASRS Text
Title: C170 LANDS WITH APPARENT LEFT BRAKE LOCKED. ATTEMPTS TO COUNTER WITH RIGHT BRAKING RESULTS IN NOSE OVER.
Narrative: AFTER A NORMAL APCH; THE ACFT STARTED VEERING TO THE L UPON TOUCHDOWN. I APPLIED R RUDDER TO CORRECT BUT THE TURN PERSISTED. THE ACFT ACTED AS IF THERE WAS EXCESSIVE BRAKING ACTION ON THE L MAIN GEAR; YET I WAS APPLYING NO PRESSURE TO THE L BRAKE. I ADDED R BRAKE TO COMPENSATE. THE ACFT STOPPED TURNING AND NOSED OVER. I NOTIFIED TFC IN THE PATTERN THAT THE ACFT WAS STILL ON THE RWY AND EXITED. I THEN TRIED PUSHING THE ACFT FORWARD BUT IT RESISTED SO I SWUNG IT AROUND 180 DEGS BY PUSHING REARWARD ON THE HORIZ STABILIZER AND PUSHED IT BACKWARD (AND OFF THE RWY). I DO NOT KNOW WHAT CAUSED THE UNCOMMANDED L BRAKING. I HAD THE ACFT TAKEN TO A REPAIR FACILITY FOR EVALUATION AND REPAIR.
Data retrieved from NASA's ASRS site as of January 2009 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.