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| Date: | Tuesday 17 May 1983 |
| Time: | 17:00 LT |
| Type: |  Piper PA-25 |
| Owner/operator: | Boyana Airspray Company |
| Registration: | N4521Y |
| MSN: | 25-472 |
| Year of manufacture: | 1961 |
| Total airframe hrs: | 3201 hours |
| Engine model: | Lycoming O-540 |
| Fatalities: | Fatalities: 0 / Occupants: 1 |
| Other fatalities: | 0 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Tomah, WI -
 United States of America
|
| Phase: | Initial climb |
| Nature: | Agricultural |
| Departure airport: | , WI (NONE) |
| (NONE) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
THE ACFT LOST POWER AND MADE A FORCED LANDING IMMEDIATELY AFTER TAKEOFF ON AN AERIAL APPLICATION MISSION. THE LANDING GEAR COLLAPSED DURING THE LANDING. THE PILOT STATED THAT THE ACCIDENT OCCURRED ON THE 5TH FLT OF THE DAY AFTER TAKING OFF ON RUNWAY 27 AND WHEN CLIMBING TO 125 FT AGL THE ENGINE BEGAN TO LOSE POWER. THE PILOT REDUCED POWER AND LANDED STRAIGHT AHEAD 50 YDS OFF THE END OF TH TAKEOFF RUNWAY. AN EXAMINATION OF THE ENGINE REVEALED THAT THE LOWER PLUGS CONTAINED A DARK GREY DEPOSIT THAT BRIDGED THE ELECTRODES. THIS DEPOSIT WEAKENED THE SPARK PRODUCED BY THE PLUGS. WHEN CLEARED THEY PRODUCED A STRONGER SPARK.
Probable Cause:
Accident investigation:
 |
|
Sources:
NTSB CHI83LA219
History of this aircraft
Other occurrences involving this aircraft
| 21 August 1969 | N6356Z | Mid Valley Dus | 0 | Visalia, CA | |
w/o |
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 02-Apr-2024 08:59 | ASN Update Bot | Added |
Corrections or additions? ... Edit this accident description
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