SEA87LA163

NTSB accident investigation · Cessna T-207 · Mccall, ID · July 9, 1987

Accident · No injuriesLimited investigationFinal report
Date
July 9, 1987, 10:00 local (16:00 UTC)
Place
Mccall, ID
Injuries
2 uninjured
Damage
Substantial damage
Phase of flight
Enroute
Aircraft
N6385HCessna T-207
Weather
Visual (VMC) · Day
Status
Completed · report November 29, 1988
Report
Approved by Office Director
FAA report
19870709053329A
Case key
40675

From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.

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Sequence of events

NTSB’s coding before 2008: each occurrence and phase of flight, and the causes and factors under it. The codes are defined in NTSB’s coding manual.

Loss of engine power(total) - mech failure/malfClimb - to cruise
Exhaust system,turbocharger - wornCause
Maintenance - inadequateCompany maintenance personnelCause
Exhaust system,turbocharger - leakCause
Fluid,oil - starvationCause
Forced landingLanding
On ground/water encounter with terrain/waterLanding - roll
Terrain condition - high vegetationFactor

Analysis

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.

Aircraft

Registration
N6385H
Reported as
Cessna T-207
Category
Airplane
Serial number
20700505
Engine
Continental TSIO-520M, 300 horsepower, reciprocating
Damage
Substantial damage
Flight
Part 135
Registered owner
Mccall Air Taxi
Airworthiness certificate
Standard, Normal
Last inspection
Annual · October 21, 1986 · 59 hours before
Departed
USFS · Indian Creek, ID
Destination
2UF · Stanley, ID
Flight plan
Company VFR

Matched to the registry by N-number and the event date; the registry’s history has gaps, so older matches can be wrong. Compare the reported make and model.

Flight crew

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
59
Certificates
Commercial, Airline transport, Flight instructor
Airplane ratings
Multi-engine land, Single-engine land, Single-engine sea
Instrument ratings
Airplane
Medical
Class 2, Valid Medical--w/ waivers/lim
Seat
Left
Flight hours
7,400 total · 7 in this make and model · 7,400 as pilot in command · 80 in the last 90 days · 1 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
Calm
Visibility
30 statute miles
Lowest ceiling
None
Temperature
75 °F
Altimeter
30.00 inHg

FAA reports on this event · 1

The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.

Other investigations on N6385H · 1

Matched to the same aircraft by N-number and date.