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B737 captain reports complete brake failure during landing roll. Aircraft is brought to stop using reverse thrust alone and is towed to gate.
| Attributes | |
| ACN | 828848 |
| Time | |
| Date | 200903 |
| Local Time Of Day | 1201-1800 |
| Place | |
| Locale Reference | ZZZ.Airport |
| State Reference | US |
| Environment | |
| Flight Conditions | VMC |
| Aircraft 1 | |
| Make Model Name | B737-400 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Landing |
| Flight Plan | IFR |
| Component | |
| Aircraft Component | Normal Brake System |
| Person 1 | |
| Function | Captain Pilot Flying |
| Events | |
| Anomaly | Aircraft Equipment Problem Critical Ground Event / Encounter Loss Of Aircraft Control |
Narrative:
After landing rollout; brake failure occurred. Thrust reversers were used to bring aircraft to a stop on parallel taxiway. There is no checklist to deal with this issue. Callback conversation with reporter revealed the following information: there were no indications of brake problems prior to landing and first indication of a problem was total lack of braking. Fortunately the runway was long and the aircraft was light. The aircraft was brought to a complete stop on the taxiway using reverse thrust and was able to hold position due to a slight incline and some thrust with one engine shut down. The aircraft was towed to the gate where the nose strut was found to be over serviced preventing the ground/air sense switch from closing on the ground. This would have prevented two of the four wheel brakes from functioning but does not explain the total loss of braking. What other components may have failed are unknown.
Original NASA ASRS Text
Title: B737 Captain reports complete brake failure during landing roll. Aircraft is brought to stop using reverse thrust alone and is towed to gate.
Narrative: After landing rollout; brake failure occurred. Thrust reversers were used to bring aircraft to a stop on parallel taxiway. There is no checklist to deal with this issue. Callback conversation with Reporter revealed the following information: There were no indications of brake problems prior to landing and first indication of a problem was total lack of braking. Fortunately the runway was long and the aircraft was light. The aircraft was brought to a complete stop on the taxiway using reverse thrust and was able to hold position due to a slight incline and some thrust with one engine shut down. The aircraft was towed to the gate where the nose strut was found to be over serviced preventing the ground/air sense switch from closing on the ground. This would have prevented two of the four wheel brakes from functioning but does not explain the total loss of braking. What other components may have failed are unknown.
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.