ASN Wikibase Occurrence # 221706
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| Date: | Sunday 17 December 2017 |
| Time: | 13:00 |
| Type: |  RotorWay Exec 90 |
| Owner/operator: | Private |
| Registration: | N716JB |
| MSN: | EXEC-3000 |
| Year of manufacture: | 1998 |
| Total airframe hrs: | 317 hours |
| Engine model: | Rotorway RW-152 |
| Fatalities: | Fatalities: 0 / Occupants: 1 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Caldwell, ID -
 United States of America
|
| Phase: | Manoeuvring (airshow, firefighting, ag.ops.) |
| Nature: | Private |
| Departure airport: | Caldwell, ID (EUL) |
| Caldwell, ID (EUL) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
The private pilot was performing hover-taxi maneuvers in the experimental amateur-built helicopter when the engine lost all power, which resulted in a forced landing in a field during which the airplane landed hard. Postaccident examination revealed that the engine had seized due to oil exhaustion after the oil pressure gauge line had failed, causing most of the engine oil to be expelled overboard with an insufficient quantity of oil in the sump for engine operation.
The pilot, who was also the helicopter builder, had installed the oil pressure gauge line, which was made of automotive-grade nylon tubing, about 1 year before the accident. Because the helicopter had an experimental airworthiness certificate and was considered to be an amateur-built aircraft, the pilot could use non-aviation grade components. The pilot discarded the oil line before it could be examined, so its failure mode could not be determined.
Probable Cause: Failure of the oil pressure gauge line, which resulted in oil exhaustion and a total loss of engine power.
Accident investigation:
 |
|
Sources:
NTSB
History of this aircraft
Other occurrences involving this aircraft
| 1 October 1999 | N716JB | Private | 0 | Gallup, NM | |
sub |
| 5 September 2002 | N716JB | Jim Robert Gray | 0 | Las Cruces, New Mexico | |
sub |
| Fuel exhaustion | ||||||
| 19 October 2016 | N716JB | Private | 0 | Caldwell, ID | |
sub |
| Heavy landing | ||||||
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 10-Feb-2019 10:48 | ASN Update Bot | Added |
Corrections or additions? ... Edit this accident description
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