LAX85FA376

NTSB accident investigation · Cessna T303 · Simi Valley, CA · August 31, 1985

Accident · Serious injuriesField investigationFinal report
Date
August 30, 1985, 17:36 local (Aug 31, 1985, 00:36 UTC)
Place
Simi Valley, CA
Injuries
3 serious
Damage
Destroyed
Phase of flight
Maneuvering
Aircraft
N6490VCessna T303
Weather
Visual (VMC) · Day
Status
Completed
Report
Approved by Office Director
Safety recommendations
Yes
FAA report
19850830042369A
Case key
24531

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

On this page

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/malfManeuvering
Fuel system,line - leakFactor
Maintenance,installation - improperManufacturerCause
Exhaust system,turbocharger - leakFactor
Fuel system,line fitting - crackedFactor
Fluid,fuel - starvation
Weather condition - temperature extremesFactor
Loss of engine power(total) - nonmechanicalManeuvering
Fluid,fuel - starvationFactor
Weather condition - temperature extremesFactor
In flight collision with objectDescent - emergency
Object - tree(s)Factor
In flight collision with terrain/waterLanding - flare/touchdown

Analysis

The acft collided with trees during a forced landing following a loss of pwr. The student plt stated the flt was normal until a 'violent right yaw' developed when the trottles were advanced to recover from a practice stall. As the CFI took over the controls and attepted recovery a 'substantial loss of power' occurred on both engs. A forced landing was made in a fld during which the left wing contacted trees and the acft was engulfed in flames. Post accident examination of the left eng failed to disclose any discrepancies. Discrepancies were noted on the right eng. 1) the fuel controller fuel line 'tee' fitting was cracked around 50% of its circumference. (Ductile overload) 2) the turbocharger gasket on the inlet side of the turbine showed leakage aound 70% of the gasket are. The acft had a history of symptoms of fuel vaporization which subsided with use of the aux fuel pump as the eng manufactorer suggests. It is unknown if the aux pump was used during this accident.

Aircraft

Registration
N6490V
Reported as
Cessna T303
Category
Airplane
Serial number
T30300312
Airframe hours
2
Engine
Continental TSIO-520-AE, 250 horsepower, reciprocating
Damage
Destroyed
Fire
On-Ground
Flight
Instructional · Part 91
Operator
Gunnell Aviation
Registered owner
Raymond J. Risher,P.F.Margo
Airworthiness certificate
Standard, Normal
Last inspection
Annual · July 23, 1985 · 1 hours before
Departed
SMO · Santa Monica, CA

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
30
Certificate
Airline transport
Airplane ratings
Single-engine land, Multi-engine land
Instrument ratings
Airplane
Medical
Class 1, Valid Medical--w/ waivers/lim
Seat
Right
Flight hours
3,365 total · 127 in this make and model · 3,240 as pilot in command · 178 in the last 90 days · 112 in the last 30 days · 6 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
Calm
Visibility
20 statute miles
Lowest ceiling
None
Temperature
84 °F

FAA reports on this event · 1

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