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NTSB Report
September 2, 1991 · Cessna 310F · N6788X
Corvallis, OR
Overview
Report Status
Probable Cause
Event Type
Accident
Date
September 2, 1991
Injury Outcomes
No injuries (1 uninjured)
Location
Corvallis, OR
Aircraft
Cessna 310F
Tail Number
N6788X
Operator
John R Niendorf
Injuries
None
Aircraft Damage
Substantial
NTSB Number
SEA91LA231
IMMEDIATELY FOLLOWING TAKEOFF THE PILOT EXPERIENCED A LOSS OF CLIMB PERFORMANCE AND WAS UNABLE TO DETERMINE WHICH ENGINE WAS AFFECTED. HE CHOSE TO RETURN TO THE AIRPORT AND THEN EXECUTED A 180 DEGREE TURN BACK TO THE AIRPORT. UNABLE TO MAINTAIN ALTITUDE HE EXECUTED A FORCED LANDING IN AN OPEN FIELD AND THE RIGHT MAIN LANDING GEAR SEPARATED AS THE AIRCRAFT CROSSED A DITCH. SUBSEQUENT TEST RUN OF THE LEFT ENGINE REVEALED A DISCONNECTED AIR INDUCTION LINE WITH DEGRADED PERFORMANCE ABOVE 60% POWER. THE RIGHT ENGINE PROPELLER BLADES EXHIBITED AFTWARD TIP CURL AND POLISHING. THE PILOT REPORTED ONLY 35 HOURS OF TOTAL MULTI-ENGINE FLIGHT TIME OF WHICH ONLY 3 HOURS WERE IN THE CESSNA 310 AND NO CESSNA 310 FLIGHT TIME WITHIN THE PREVIOUS 90 DAYS.
NTSB Probable Cause
A DISCONNECTED AIR INDUCTION LINE, AND THE PILOT'S INFLIGHT DECISION TO EXECUTE A 180 DEGREE TURN BACK TO THE AIRPORT. HIS LACK OF EXPERIENCE IN MULTI-ENGINE AIRCRAFT, HIS OVERALL LACK OF FAMILIARITY AND LACK OF RECENT EXPERIENCE IN THE TYPE AIRCRAFT WERE FACTORS IN THE ACCIDENT.
Full Narrative
IMMEDIATELY FOLLOWING TAKEOFF THE PILOT EXPERIENCED A LOSS OF CLIMB PERFORMANCE AND WAS UNABLE TO DETERMINE WHICH ENGINE WAS AFFECTED. HE CHOSE TO RETURN TO THE AIRPORT AND THEN EXECUTED A 180 DEGREE TURN BACK TO THE AIRPORT. UNABLE TO MAINTAIN ALTITUDE HE EXECUTED A FORCED LANDING IN AN OPEN FIELD AND THE RIGHT MAIN LANDING GEAR SEPARATED AS THE AIRCRAFT CROSSED A DITCH. SUBSEQUENT TEST RUN OF THE LEFT ENGINE REVEALED A DISCONNECTED AIR INDUCTION LINE WITH DEGRADED PERFORMANCE ABOVE 60% POWER. THE RIGHT ENGINE PROPELLER BLADES EXHIBITED AFTWARD TIP CURL AND POLISHING. THE PILOT REPORTED ONLY 35 HOURS OF TOTAL MULTI-ENGINE FLIGHT TIME OF WHICH ONLY 3 HOURS WERE IN THE CESSNA 310 AND NO CESSNA 310 FLIGHT TIME WITHIN THE PREVIOUS 90 DAYS.
Flight
Event TypeAccident
Event Time12:30 PDT
Nearest AirportCorvallis Muni. (0nm N)
Runway35
Runway Length5065 ft
Runway Width150 ft
Flight Plan FiledNone
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftCessna 310F
Tail NumberN6788X
Aircraft CategoryAir
DamageSubstantial
OperatorJohn R Niendorf
Operating RulePart 91
Engines2
Engine TypeReciprocating
Engine DetailsContinental · IO-470D · Reciprocating · 260
Seats5
People & Injuries
Injury SummaryNo injuries (1 uninjured)
Fatal0
Serious0
Minor0
Uninjured1
Total1
Crew 1Age 22 · Second Class
Conditions
ConditionsVMC
LightDaylight
Wind30° @ 11 kt
Visibility10 sm
CeilingNone
Temperature / Dew Point0 C
Altimeter0
Weather SourceWIT