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NTSB Report
July 9, 1987 · Cessna T-207 · N6385H
Mccall, ID
Overview
Report Status
Preliminary report
Event Type
Accident
Date
July 9, 1987
Injury Outcomes
No injuries (2 uninjured)
Location
Mccall, ID
Aircraft
Cessna T-207
Tail Number
N6385H
Injuries
None
Aircraft Damage
Substantial
NTSB Number
SEA87LA163
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.
Full Narrative
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.
Flight
Event TypeAccident
Event Time10:00 MDT
Nearest Airport2nm WSW
Runway0
Runway Length0
Runway Width0
Flight Plan FiledCvfr
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftCessna T-207
Tail NumberN6385H
Aircraft CategoryAir
DamageSubstantial
Operating RulePart 135
Engines1
Engine TypeReciprocating
Engine DetailsContinental · TSIO-520M · Reciprocating · 300
Seats9
People & Injuries
Injury SummaryNo injuries (2 uninjured)
Fatal0
Serious0
Minor0
Uninjured2
Total2
Crew 1Age 59 · Second Class
Conditions
ConditionsVMC
LightDaylight
WindCalm
Visibility30 sm
CeilingNone
Temperature / Dew Point0 C
Altimeter30.00 inHg
Weather SourcePILO