ASN Wikibase Occurrence # 368323
This information is added by users of ASN. Neither ASN nor the Flight Safety Foundation are responsible for the completeness or correctness of this information.
If you feel this information is incomplete or incorrect, you can submit corrected information.
| Date: | Friday 28 July 1989 |
| Time: | 09:30 LT |
| Type: |  Callair A-9 |
| Owner/operator: | Air Specialties, Inc. |
| Registration: | N8246H |
| MSN: | 1119 |
| Year of manufacture: | 1965 |
| Engine model: | JACOBS R-755-A2M |
| Fatalities: | Fatalities: 0 / Occupants: 1 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Cartwright, ND -
 United States of America
|
| Phase: | Manoeuvring (airshow, firefighting, ag.ops.) |
| Nature: | Agricultural |
| Departure airport: | Sidney, MT (KSDY) |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
THE PILOT WAS SPRAYING THIOLUX ON A FIELD AND HAD JUST PULLED UP FROM SWATH RUN WHEN HE HEARD A LOUD BANG AND NOTED ENGINE RPM DECAY. GROUND WITNESSES ALSO HEARD THE BANG AND OBSERVED DARK SMOKE TRAILING FROM THE AIRCRAFT. THE PILOT MADE A FORCED LANDING IN AN ALFALFA FIELD. THE LANDING GEAR COLLAPSED, RESULTING IN SUBSTANTIAL DAMAGE. A SMALL CARBURETOR FIRE WAS ALSO EXTINGUISHED. THE ENGINE AND CARBURETOR WERE PARTIALLY DISASSEMBLED. EVIDENCE OF AN EXTREMELY RICH MIXTURE, BACKFIRE, AND CARBURETOR FIRE WAS FOUND. ALL THE SPARK PLUGS WERE BLACK. THE CARBURETOR WAS OVERHAULED IN 1987 BECAUSE THE ENGINE RAN ROUGH AND WOULD NOT DEVELOP FULL POWER, REGARDLESS OF MIXTURE CONTROL SETTING. THE CARBURETOR HAD ACCUMULATED 300 HOURS SINCE OVERHAUL.
Probable Cause: A TOTAL LOSS OF POWER DUE TO AN IMPROPERLY ADJUSTED CARBURETOR WHICH RESULTED IN AN EXCESSIVE RICH FUEL-AIR MIXTURE. THIS REQUIRED A FORCED LANDING IN AN AREA WHERE NO SUITABLE TERRAIN EXISTED.
Accident investigation:
 |
|
Sources:
NTSB DEN89LA181
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 23-Mar-2024 17:13 | ASN Update Bot | Added |
Corrections or additions? ... Edit this accident description
The Aviation Safety Network is an exclusive service provided by:
Quick Links:
| ASN Home | Send Correction / Feedback |
| FSF Home | Disclaimer | Copyright |
| Contact Us | Privacy Policy |
| Press / Media |
CONNECT WITH US:
©2024 Flight Safety Foundation