ASN Wikibase Occurrence # 13450
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| Date: | Saturday 31 May 1975 |
| Time: | 12:12 |
| Type: |  Piper PA-30-160 Twin Comanche |
| Owner/operator: | William H Pfeiffer |
| Registration: | N7833Y |
| MSN: | 30-910 |
| Fatalities: | Fatalities: 4 / Occupants: 4 |
| Aircraft damage: | Destroyed |
| Category: | Accident |
| Location: | Williamson County Regional Airport, Marion, Illinois -
 United States of America
|
| Phase: | Approach |
| Nature: | Private |
| Departure airport: | Downtown Airport Springfield, Missouri (FAA LID: 3DW) |
| Williamson County Regional Airport, Marion, Illinois (MWA/KMWA) | |
| Confidence Rating: |  Accident investigation report completed and information captured |
Written off (destroyed) May 31, 1975 when aircraft broke up in flight, and crashed on approach to Williamson County Regional Airport, Marion, Illinois: all four person on board (pilot and three passengers) were killed. According to the following extract from the official NTSB report into the accident:
"PROBABLE CAUSE(S)
PILOT IN COMMAND - ATTEMPTED OPERATION BEYOND EXPERIENCE/ABILITY LEVEL - SPATIAL DISORIENTATION - EXCEEDED DESIGNED STRESS LIMITS OF AIRCRAFT AIRFRAME - WINGS/SPARS
FACTOR(S)
MISCELLANEOUS ACTS,CONDITIONS - OVERLOAD FAILURE - SEPARATION IN FLIGHT
WEATHER - LOW CEILING - TURBULENCE, ASSOCIATED W/CLOUDS AND/OR THUNDERSTORMS"
Six hours actual instructional flight logged, 3 hours since October 1974. All wing spars bent upwards prior to failure and separation. Registration N7833Y cancelled by the FAA on August 14, 1975
Sources:
1. NTSB Identification: CHI75AC092 at https://www.ntsb.gov/_layouts/ntsb.aviation/brief.aspx?ev_id=48815&key=0
2. FAA: http://registry.faa.gov/aircraftinquiry/NNum_Results.aspx?omni=Home-N-Number&nNumberTxt=7833Y
3. http://planecrashmap.com/plane/il/N7833Y/
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 25-Feb-2008 12:00 | ASN archive | Added |
| 17-Mar-2017 22:14 | Dr.John Smith | Updated [Aircraft type, Operator, Location, Phase, Nature, Departure airport, Destination airport, Source, Narrative] |
Corrections or additions? ... Edit this accident description
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