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The pilot of a BE35 failed to recognize the lack of a landing gear warning horn when landing with the gear still retracted. Investigation after the fact discovered the landing gear circuit breaker was open which causes both the gear safe and unsafe lights to illuminate and silences the landing gear warning horn. The reporter noted only the gear down light while performing the before landing check.
| Attributes | |
| ACN | 960748 |
| Time | |
| Date | 201107 |
| Local Time Of Day | 1201-1800 |
| Place | |
| Locale Reference | ZZZ.Airport |
| State Reference | US |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Make Model Name | Bonanza 35 |
| Operating Under FAR Part | Part 91 |
| Flight Phase | Landing |
| Flight Plan | None |
| Component | |
| Aircraft Component | Gear Extend/Retract Mechanism |
| Person 1 | |
| Function | Single Pilot |
| Qualification | Flight Crew Commercial Flight Crew Flight Instructor Flight Crew Instrument |
| Experience | Flight Crew Last 90 Days 12 Flight Crew Total 4565 Flight Crew Type 2000 |
| Events | |
| Anomaly | Aircraft Equipment Problem Critical Ground Event / Encounter Gear Up Landing |
Narrative:
I entered a short downwind leg to runway 24 while slowing to gear speed of less than 120 KIAS with the power setting at 15' of manifold pressure. I selected the gear down position then turned base leg and extended full flaps. On final I performed a gumps check; saw a gear down indicator light on the panel and continued the approach to landing but the gear was still up. After exiting the aircraft and calling the FSS to NOTAM the runway closed I reentered the aircraft and found the landing gear circuit breaker had popped. In this model bonanza if the circuit breaker is popped the gear warning horn does not activate; the gear will not cycle and both gear lights illuminate. During my gumps check I saw the gear down light as expected and flew onto the ground blissfully unaware until the scraping sound. Damage; while expensive; does not meet the FAA criteria for an aircraft accident.
Original NASA ASRS Text
Title: The pilot of a BE35 failed to recognize the lack of a landing gear warning horn when landing with the gear still retracted. Investigation after the fact discovered the landing gear circuit breaker was open which causes both the gear safe and unsafe lights to illuminate and silences the landing gear warning horn. The reporter noted only the gear down light while performing the before landing check.
Narrative: I entered a short downwind leg to Runway 24 while slowing to gear speed of less than 120 KIAS with the power setting at 15' of manifold pressure. I selected the gear down position then turned base leg and extended full flaps. On final I performed a GUMPS check; saw a gear down indicator light on the panel and continued the approach to landing but the gear was still up. After exiting the aircraft and calling the FSS to NOTAM the runway closed I reentered the aircraft and found the landing gear circuit breaker had popped. In this model Bonanza if the circuit breaker is popped the gear warning horn does not activate; the gear will not cycle and both gear lights illuminate. During my GUMPS check I saw the gear down light as expected and flew onto the ground blissfully unaware until the scraping sound. Damage; while expensive; does not meet the FAA criteria for an aircraft accident.
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.