ASN Wikibase Occurrence # 38625
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| Date: | Wednesday 16 March 1994 |
| Time: | 15:08 LT |
| Type: |  Ayres S-2R-R1820 Bull Thrush |
| Owner/operator: | Grangeville Air Service |
| Registration: | N40237 |
| MSN: | R1820-008DC |
| Total airframe hrs: | 2460 hours |
| Engine model: | WRIGHT R-1820 |
| Fatalities: | Fatalities: 2 / Occupants: 2 |
| Aircraft damage: | Destroyed |
| Category: | Accident |
| Location: | Reno, NV -
 United States of America
|
| Phase: | En route |
| Nature: | Ferry/positioning |
| Departure airport: | Truckee, CA (KTRK) |
| (4SD) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
ON THE PREVIOUS FLIGHT, THE PILOT MADE AN UNSCHEDULED STOP AT TRUCKEE DUE TO HIGH OIL TEMPERATURE & LOW OIL PRESSURE. AFTER CONSULTING WITH THE OWNER/OPERATOR, THE PILOT ARRANGED FOR A MECHANIC TO CHECK THE MAGNETIC DRAIN PLUG & ENGINE OIL SCREEN. THE MAGNETIC DRAIN PLUG WAS FREE OF PARTICLE DEBRIS & THE SCREEN HAD A FEW PARTICLES (NOT OUT OF ORDINARY). A DECISION WAS MADE TO FERRY THE PLANE TO RENO/STEAD, WHERE EXPERIENCED MAINTENANCE FOR WRIGHT ENGINES WAS AVAILABLE. DURING FLIGHT, THE PILOT REPORTED PROBLEMS WITH THE ENGINE & INDICATED HE WOULD LAND ON A ROAD. ONE WITNESS SAID HE SAW A PUFF OF WHITE SMOKE FOLLOWED BY BLACK SMOKE. WHILE LANDING, THE PLANE HIT ELECTRICAL LINES ALONG THE ROADWAY, THEN IT STRUCK A LIGHT POST, THE GROUND & A VAN. AN EXAM REVEALED METAL CHIPS ON THE OIL DRAIN PLUG & IN THE OIL SCREEN. TEAR- DOWN OF THE ENGINE REVEALED A WORN MASTER ROD JOURNAL WITH HEAT DISCOLORATION. TOXICOLOGY TESTS SHOWED 0.003 UG.ML OF TETRAHYDROCANNABINOL CARBOXYLIC ACID (MARIJUANA) IN THE PILOT'S BLOOD & 0.072 UG/ML IN HIS URINE.
Probable Cause: AN UNDETERMINED PROBLEM WITH THE ENGINE OIL SYSTEM, A DECISION TO FLY THE AIRPLANE WITH A KNOWN DEFICIENCY, AND PROGRESSIVE (PARTIAL) FAILURE OF THE ENGINE MASTER ROD AND BEARING.
Accident investigation:
 |
|
Sources:
NTSB LAX94FA165
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 24-Oct-2008 10:30 | ASN archive | Added |
| 21-Dec-2016 19:23 | ASN Update Bot | Updated [Time, Damage, Category, Investigating agency] |
| 10-Apr-2024 08:29 | ASN Update Bot | Updated [Time, Total fatalities, Total occupants, Other fatalities, Phase, Departure airport, Source, Narrative, Category, Accident report] |
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