Ercoupe (Eng & Research Corp ) 415-C N99371
30 December 1998 · San Ysabel, California, United States · No injuries
Summary
On 30 December 1998 at about 00:45 local time, a Ercoupe (Eng & Research Corp ) 415-C registered N99371 was involved in an accident near San Ysabel, California, 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 00:45
- Classification
- Accident
- Location
- San Ysabel, California, United States
- Coordinates
- 33.1801, -116.7291
- Aircraft
- Ercoupe (Eng & Research Corp ) 415-C
- Registration
- N99371
- Category
- Airplane
- Engines
- 1
- Operator
- Not recorded
- Operating rule
- Part 91: General Aviation
- Purpose of flight
- Personal
- Phase of flight
- Not recorded
- Route
- Ramona → Unknown
- Aircraft damage
- Substantial
- Weather
- VMC
- Light
- Dusk
- NTSB number
- LAX99LA061
People
Nobody was injured.
| On board | Died | Serious | Minor | Uninjured |
|---|---|---|---|---|
| 1 | 0 | 0 | 0 | 1 |
Probable cause
A fatigue fracture of the crankshaft and the resulting separation of the propeller.
Quoted verbatim from the NTSB record. This site does not paraphrase or interpret it.
Read the full NTSB narrative
In cruise flight at 4,500 feet, the pilot added power as the terrain began to rise, then the engine started to vibrate. As the pilot looked down to check the mixture and carburetor heat, the vibration intensified. The crankshaft fractured and the propeller separated from the airplane. The pilot subsequently made a forced landing on uneven terrain and the nose gear collapsed. Metallurgical laboratory examination of the remaining crankshaft piece determined the crankshaft separated forward of the oil-slinger flange due to fatigue. The fatigue region had an origin point in an area mechanically damaged during the crankshaft failure.
Quoted verbatim from the NTSB record.
Other Ercoupe (Eng & Research Corp ) 415 accidents
| Date | Aircraft | Location | Operator | Outcome | Died |
|---|---|---|---|---|---|
| 22 Apr 1998 | Ercoupe (Eng & Research Corp ) 415-D | Colstrip, Montana, United States | - | Minor injuries | - |
| 31 Oct 1998 | Ercoupe (Eng & Research Corp ) 415-C | Hartselle, Alabama, United States | - | Serious injuries | - |
| 6 May 1998 | Ercoupe (Eng & Research Corp ) 415-C | Olustee, Oklahoma, United States | - | Fatal | 1 |
| 19 Feb 1998 | Ercoupe (Eng & Research Corp ) 415-C | Wood Lake, Nebraska, United States | - | Fatal | 1 |
| 20 Mar 1999 | Ercoupe (Eng & Research Corp ) 415E | Kingman, Arizona, United States | - | Fatal | 2 |
| 18 Jul 1999 | Ercoupe (Eng & Research Corp ) 415-CD | Wahoo, Nebraska, United States | - | No injuries | - |
Other accidents in this area
| Date | Aircraft | Location | Operator | Outcome | Died |
|---|---|---|---|---|---|
| 1 Oct 1998 | Cessna 152 | Avalon, California, United States | Orange County Flight Center | Fatal | 1 |
| 5 Oct 1998 | Grumman TS-2A | Banning, California, United States | - | Fatal | 1 |
| 15 Aug 1998 | North American NAVION | Salinas, California, United States | - | Fatal | 2 |
| 21 Aug 1998 | Bell 206B | Salinas, California, United States | - | No injuries | - |
| 21 Aug 1998 | Robinson R22B | Ramona, California, United States | Civic Helicopters | No injuries | - |
| 27 Aug 1998 | Aerospatiale SA316B | Porterville, California, United States | U.s. Dept. of the Interior | No injuries | - |