Mooney M20K N1157G
19 January 2000 · Tyler, Texas, United States · No injuries
Summary
On 19 January 2000 at about 18:30 local time, a Mooney M20K registered N1157G was involved in an accident near Tyler, Texas, 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 18:30
- Classification
- Accident
- Location
- Tyler, Texas, United States
- Coordinates
- 32.3207, -95.2990
- Aircraft
- Mooney M20K
- Registration
- N1157G
- Category
- Airplane
- Engines
- 1
- Operator
- Not recorded
- Operating rule
- Part 91: General Aviation
- Purpose of flight
- Personal
- Phase of flight
- Not recorded
- Route
- Addison → Tyler
- Aircraft damage
- Substantial
- Weather
- VMC
- Light
- Day
- NTSB number
- FTW00LA068
People
Nobody was injured.
| On board | Died | Serious | Minor | Uninjured |
|---|---|---|---|---|
| 1 | 0 | 0 | 0 | 1 |
Probable cause
The failure of the crankshaft drive gear as a result of fatigue, which resulted in a forced landing. A factor was the lack of suitable terrain for the forced landing.
Quoted verbatim from the NTSB record. This site does not paraphrase or interpret it.
Read the full NTSB narrative
The pilot reported that the engine lost total power while in cruise flight between 1,500 feet and 2,000 feet agl. He executed a forced landing, during which the airplane contacted a fence post. During the postaccident examination of the engine, the crankshaft drive gear was observed fractured. Three consecutive gear teeth of the crankshaft drive gear separated, of which two were recovered. The crankshaft drive gear and gear teeth were examined at the NTSB Materials Laboratory and three areas of fatigue were observed. Each fatigue area originated at the relief radius at the root of one of the three separated teeth. No tooling marks or gouge marks were observed near the fracture surface or on the remainder of the crankshaft gear's teeth. The outermost nitrided layer of the crankshaft drive gear appeared smooth and no cracks were noted. Additionally, machining marks through the entire crankshaft drive gear appeared consistent.
Quoted verbatim from the NTSB record.
Other Mooney M20K accidents
| Date | Aircraft | Location | Operator | Outcome | Died |
|---|---|---|---|---|---|
| 31 May 2000 | Mooney M20K | Grt Barrington, Massachusetts, United States | - | Serious injuries | - |
| 6 Oct 2000 | Mooney M20K | Monroe, Washington, United States | Marc W. Gordon | No injuries | - |
| 15 Dec 2000 | Mooney M20K | Ogden, Utah, United States | - | Fatal | 1 |
| 24 Jan 2000 | Mooney M20K | Pendleton, Oregon, United States | Heine, Doug L. | Fatal | 2 |
| 27 Jul 2000 | Mooney M20K | Cheyenne, Wyoming, United States | Keith E. Duvall | Fatal | 1 |
| 1 Jul 2000 | Mooney M20K | Godley, Texas, United States | - | Minor injuries | - |
Other accidents in this area
| Date | Aircraft | Location | Operator | Outcome | Died |
|---|---|---|---|---|---|
| 8 Jul 2000 | Schweizer G-164B | Moscow, Texas, United States | Paynes Flying Service, Inc. | Serious injuries | - |
| 30 May 2000 | Air Tractor AT-301 | Garwood, Texas, United States | Michael Thompson | Minor injuries | - |
| 19 Apr 2000 | Mooney M20F | Tomball, Texas, United States | - | Minor injuries | - |
| 12 Apr 2000 | Piper PA-32R-301 | Rocksprings, Texas, United States | Ivan B. Greenhut | No injuries | - |
| 16 Sep 2000 | Cessna 185F | Burnet, Texas, United States | - | Minor injuries | - |
| 26 Feb 2000 | Piper PA-18 | New Ulm, Texas, United States | Leonard F. Firth | Minor injuries | - |