ASN Wikibase Occurrence # 372691
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| Date: | Thursday 9 July 1987 |
| Time: | 10:00 LT |
| Type: |  Cessna T-207 |
| Owner/operator: | Mccall Air Taxi |
| Registration: | N6385H |
| MSN: | 20700505 |
| Year of manufacture: | 1979 |
| Engine model: | CONTINENTAL TSIO-520M |
| Fatalities: | Fatalities: 0 / Occupants: 2 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Mccall, ID -
 United States of America
|
| Phase: | En route |
| Nature: | Unknown |
| Departure airport: | Indian Creek, ID (USFS) |
| Stanley, ID (2UF) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
DURING CLIMB OUT TO CRUISE ALTITUDE THE PILOT NOTICED A DROP IN MANIFOLD PRESSURE AND A LOSS OF OIL PRESSURE. THE PILOT WAS IN THE PROCESS OF ATTEMPTING TO REACH AN AIRSTRIP WHEN THE OIL PRESSURE DROPPED TO ZERO FOLLOWED BY A TOTAL LOSS OF POWER. AN OFF AIRPORT LANDING HAD TO BE MADE ONTO SAGE BRUSH. FAA INSPECTORS DISCOVERED A HOLE IN THE CASE OF THE ENGINE. THE BEARINGS TO THE TURBOCHARGER WERE FOUND TO HAVE BEEN EXCESSIVELY WORN. THERE WAS OIL ON THE SPRING SIDE OF THE PISTON TO THE TURBOCHARGER CONTROL VALVE. THERE WAS ALSO EVIDENCE THAT THE PISTON WAS COCKED INSIDE OF THE CYLINDER TO THE POINT OF BEING WEDGED AND/OR OIL BYPASSING THE SEAL. THE TURBOCHARGER CONTROLLER WAS WORN AND HAD NOT BEEN REPLACED WHEN THE TURBOCHARGER HAD BEEN REPLACED SOME 10 FLIGHT HOURS AGO.
Probable Cause:
Accident investigation:
 |
|
Sources:
NTSB SEA87LA163
History of this aircraft
Other occurrences involving this aircraft
| 25 February 1986 | N6385H | Front Range Aero Pilot Center | 0 | Longmont, CO | |
min |
| 18 June 2009 | C-FWHV | Ursus Aviation | 0 | Near Colville Lake, Northwest Territories |  |
sub |
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 26-Mar-2024 20:28 | ASN Update Bot | Added |
Corrections or additions? ... Edit this accident description
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