Christen A-1 N9609G
4 November 1990 · Afton, Wyoming, United States · No injuries
Summary
On 4 November 1990 at about 23:40 local time, a Christen A-1 registered N9609G, operated by Heiner, Mark G, was involved in an accident near Afton, Wyoming, United States. One person was on board and nobody was injured. The aircraft was substantially damaged. The NTSB has published a probable cause for this accident; it is quoted in full below.
The record
- Date
- at 23:40
- Classification
- Accident
- Location
- Afton, Wyoming, United States
- Coordinates
- 42.7203, -110.9205
- Aircraft
- Christen A-1
- Registration
- N9609G
- Category
- Airplane
- Engines
- 1
- Operator
- Heiner, Mark G
- Operating rule
- Part 91: General Aviation
- Purpose of flight
- Business
- Phase of flight
- Not recorded
- Route
- Scottsbluff → Unknown
- Aircraft damage
- Substantial
- Weather
- VMC
- Light
- Day
- NTSB number
- SEA91LA012
People
Nobody was injured.
| On board | Died | Serious | Minor | Uninjured |
|---|---|---|---|---|
| 1 | 0 | 0 | 0 | 1 |
Probable cause
AN IMPROPER MAINTENANCE MODIFICATION TO DISABLE THE CARBURETOR HEAT CONTROL BY UNKNOWN PERSONNEL.
Quoted verbatim from the NTSB record. This site does not paraphrase or interpret it.
Read the full NTSB narrative
DURING A CROSS COUNTRY FLIGHT, THE AIRPLANE EXPERIENCED A LOSS OF ENGINE POWER. THE PILOT INITIATED A FORCED LANDING, DURING THE LANDING ROLL, THE AIRPLANE STRUCK A DITCH AND NOSED OVER. INSPECTION OF THE ENGINE REVEALED THAT THE CARBURETOR HEAT VALVE HAD BEEN SECURED IN THE COLD OR OFF POSITION. THIS MODIFICATION DID NOT ALLOW FOR THE CARBURETOR HEAT TO BE APPLIED. AT THE TIME OF THE ENGINE FAILURE, THE AIRPLANE WAS OPERATING IN ICING CONDITIONS. THERE WERE NO OTHER MECHANICAL FAILURES OR MALFUNCTIONS FOUND.
Quoted verbatim from the NTSB record.
Other Christen A-1 accidents
| Date | Aircraft | Location | Operator | Outcome | Died |
|---|---|---|---|---|---|
| 23 Sep 1990 | Christen A-1 | Middle River, Maryland, United States | Jack B. Poage | Fatal | 1 |
| 14 Jul 1989 | Christen A-1 HUSKY | Somerton, Arizona, United States | - | Fatal | 1 |
| 17 Jan 1988 | Christen A-1 | Pompano Beach, Florida, United States | - | Serious injuries | - |
| 19 Mar 1994 | Christen A-1 | Dutch John, Utah, United States | Arment, C. Randall | No injuries | - |
| 10 Aug 1994 | Christen A-1 | Tinnie, New Mexico, United States | Usda/Aphis/Adc | No injuries | - |
| 21 Mar 1995 | Christen A-1 | Opa Locka, Florida, United States | - | No injuries | - |
Other accidents in this area
| Date | Aircraft | Location | Operator | Outcome | Died |
|---|---|---|---|---|---|
| 4 Jun 1990 | Piper PA-18-150 | Douglas, Wyoming, United States | Norman Ranch Company | No injuries | - |
| 24 Jun 1990 | Beechcraft 23 | Wheatland, Wyoming, United States | Mike Koogle | No injuries | - |
| 18 Dec 1990 | Piper PA-31-350 | Evanston, Wyoming, United States | Alpine Aviation | Fatal | 1 |
| 14 Jul 1990 | Mooney M20F | Torrington, Wyoming, United States | B & L Aviation, Inc. | No injuries | - |
| 28 Jul 1990 | Gulfstream G-II | Cheyenne, Wyoming, United States | Martin Marietta Corporation | Serious injuries | - |
| 27 Jul 1990 | Lake LA-250 | Rawlins, Wyoming, United States | - | Minor injuries | - |