ASN Wikibase Occurrence # 368950
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| Date: | Monday 10 April 1989 |
| Time: | 11:30 LT |
| Type: |  Cessna 172RG |
| Owner/operator: | Private |
| Registration: | N9688B |
| MSN: | 0969 |
| Total airframe hrs: | 1765 hours |
| Engine model: | LYCOMING O-360-F1A6 |
| Fatalities: | Fatalities: 0 / Occupants: 1 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Miamisburg, OH -
 United States of America
|
| Phase: | Landing |
| Nature: | Executive |
| Departure airport: | Toledo, OH (KTOL) |
| (KMGY) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
FOLLOWING IFR FLIGHT PIC LANDED AT UNCONTROLLED FIELD. ON LANDING ROLL LEFT MAIN GEAR COLLAPSED. SUBSEQUENT EXAM OF ACFT REVEALED A CHAFED WIRE FOR NOSE GEAR MICRO SWITCH GROUNDED AGAINST AIRFRAME. RESULTED IN GEAR MOTOR CB OPENING & STOPPING GEAR EXTENSION PRIOR TO FULL EXTENSION OF LEFT MAIN GEAR. ALSO, INTERNAL FAILURE OF THROTTLE WARNING SWITCH DID NOT PROVIDE AN UNSAFE GEAR VISUAL OR AURAL WARNING.
Probable Cause: INTERMITTANT GROUNDING OF AN ELECTRICAL WIRE TO THE NOSE LANDING GEAR. THE CHAFED WIRE RESULTED IN THE OPENING OF THE LANDING GEAR MOTOR CIRCUIT BREAKER PREVENTING FULL EXTENSION OF THE LEFT MAIN LANDING GEAR. A SECONDARY FAILURE OF THE THROTTLE WARNING SWITCH PRECLUDED A VISUAL OR AURAL WARNING OF THE UNSAFE GEAR POSITION.
Accident investigation:
 |
|
Sources:
NTSB ATL89LA124
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 24-Mar-2024 09:14 | ASN Update Bot | Added |
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