ASN Wikibase Occurrence # 379673
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| Date: | Sunday 22 April 1984 |
| Time: | 13:00 LT |
| Type: |  Piper PA-24-260 |
| Owner/operator: | William & Virginia Higgins |
| Registration: | N9218P |
| MSN: | 24-4714 |
| Total airframe hrs: | 5583 hours |
| Engine model: | Lycoming IO-540-D4A5 |
| Fatalities: | Fatalities: 0 / Occupants: 3 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Quincy, CA -
 United States of America
|
| Phase: | En route |
| Nature: | Private |
| Departure airport: | Quincy, CA (201) |
| Reno, NV (KRNO) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
THE PLT WAS UNABLE TO START THE ENG & OBTAINED THE SERVICE OF A MECHANIC. THE MECHANIC DECIDED THAT THE PROBLEM WAS IN THE IGNITION SWITCH & DISCONNECTED THE P-LEADS WITH THE BELIEF THAT THIS WOULD MAKE THE MAGS CONTINUALLY 'HOT.' HOWEVER, WITH THE P-LEADS DISCONNECTED, THE MAGS SHOULD HAVE BEEN CONTINUALLY GROUNDED BY LEAF SPRING CONNECTORS. NEVER-THE-LESS, THE ENG STARTED WITH THE P-LEADS DISCONNECTED. AFTER TAKEOFF, WITH NO MAG CHECK, THE ENG BEGAN TO VIBRATE & MISFIRE & THE PLT TRIED TO RETURN TO THE ARPT. HOWEVER, THE ENG LOST ALL POWER & THE GEAR COLLAPSED DURING A FORCED LANDING, SHORT OF THE RWY. AN EXAM REVEALED THAT WITH THE P-LEADS DISCONNECTED, THE RGT LEAF SPRING CONNECTOR EFFECTIVELY GROUNDED THE RGT MAG, BUT THE LEFT MAG REMAIND UNGROUNDED FOR A TIME. THERE WAS EVIDENCE OF ARCING BETWEEN THE LEFT LEAF SPRING CONNECTOR & THE MAGNETO CASE. ALSO, THE SPARK VIBRATOR WAS FOUND TO BE WEAK. NO OTHER PREIMPACT MECHANICAL PROBLEM WAS FOUND.
Probable Cause:
Accident investigation:
 |
|
Sources:
NTSB LAX84LA265
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 01-Apr-2024 08:16 | ASN Update Bot | Added |
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