Grumman G-164B N6669Q
15 June 1995 · Helena, Montana, United States · No injuries
Summary
On 15 June 1995 at about 16:30 local time, a Grumman G-164B registered N6669Q was involved in an accident near Helena, Montana, United States. One person was on board and nobody was injured. The aircraft was destroyed. The NTSB has published a probable cause for this accident; it is quoted in full below.
The record
- Date
- at 16:30
- Classification
- Accident
- Location
- Helena, Montana, United States
- Coordinates
- 46.5296, -112.2108
- Aircraft
- Grumman G-164B
- Registration
- N6669Q
- Category
- Airplane
- Engines
- 1
- Operator
- Not recorded
- Operating rule
- Part 137: Agricultural
- Purpose of flight
- Aerial Application
- Phase of flight
- Not recorded
- Aircraft damage
- Destroyed
- Weather
- VMC
- Light
- Day
- NTSB number
- SEA95LA119
People
Nobody was injured.
| On board | Died | Serious | Minor | Uninjured |
|---|---|---|---|---|
| 1 | 0 | 0 | 0 | 1 |
Probable cause
THE LOSS OF ENGINE POWER FOR UNDETERMINED REASONS.
Quoted verbatim from the NTSB record. This site does not paraphrase or interpret it.
Read the full NTSB narrative
WHILE MANEUVERING IN CLOSE PROXIMITY TO THE GROUND, THE ENGINE BACKFIRED TWO OR THREE TIMES AND SUDDENLY LOST POWER. THE PILOT ATTEMPTED TO LEVEL THE WINGS AND EXECUTE A FORCED LANDING, BUT THE AIRPLANE IMPACTED TERRAIN IN A BANK. EXAMINATION OF THE ENGINE REVEALED THAT THE CRANKSHAFT WAS BINDING DURING ROTATION, THE NO. 5 CYLINDER HEAD WAS CRACKED, AND THE CRANKSHAFT WAS EXPOSED TO HEAT DISTRESS. NO EVIDENCE WAS FOUND TO INDICATE THAT THESE DEFICIENCIES OCCURRED AFTER THE ACCIDENT. POSTIMPACT AND THERMAL DAMAGE TO THE ENGINE PRECLUDED A COMPLETE FUNCTIONAL TEST AND EXAMINATION OF THE ENGINE.
Quoted verbatim from the NTSB record.
Other Grumman G-164B accidents
| Date | Aircraft | Location | Operator | Outcome | Died |
|---|---|---|---|---|---|
| 6 Mar 1995 | Grumman G-164B | Crystal Springs, Mississippi, United States | - | No injuries | - |
| 28 Jul 1995 | Grumman G-164B | Ephrata, Washington, United States | - | No injuries | - |
| 1 Oct 1995 | Grumman G-164B | Avondale, Arizona, United States | - | No injuries | - |
| 8 Jun 1995 | Grumman G-164B | Springlake, Texas, United States | - | No injuries | - |
| 1 Feb 1995 | Grumman G-164B | Pixley, California, United States | - | No injuries | - |
| 16 Oct 1995 | Grumman G-164B | Lost Hills, California, United States | - | Minor injuries | - |
Other accidents in this area
| Date | Aircraft | Location | Operator | Outcome | Died |
|---|---|---|---|---|---|
| 29 Jun 1995 | Mooney M20E | Ronan, Montana, United States | - | No injuries | - |
| 24 Jul 1995 | Air Tractor AT-301 | Havre, Montana, United States | - | No injuries | - |
| 1 Aug 1995 | Cessna 172C | Red Lodge, Montana, United States | - | No injuries | - |
| 7 Aug 1995 | Cessna TU206F | Ennis, Montana, United States | Iverson, Paul, E. | No injuries | - |
| 12 Aug 1995 | Taylorcraft BC12D | St. Mary, Montana, United States | Terning, Nate, A. | Serious injuries | - |
| 22 Aug 1995 | Mooney M20K | Roundup, Montana, United States | - | No injuries | - |