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NTSB Report
August 25, 1989 · Cessna 150H · N50294
Northeast, PA
Overview
Report Status
Probable Cause
Event Type
Accident
Date
August 25, 1989
Injury Outcomes
No injuries (2 uninjured)
Location
Northeast, PA
Aircraft
Cessna 150H
Tail Number
N50294
Injuries
None
Aircraft Damage
Substantial
NTSB Number
NYC89LA202
THE LEFT SEAT PILOT WAS PREPARING FOR HIS BIENNIAL FLIGHT REVIEW. AFTER TAKEOFF, AT 800FT AGL, THE RIGHT SEAT PILOT INDUCED A POWER LOSS USING THE MIXTURE. WHEN THE MIXTURE WAS RETURNED TO RICH BY THE RIGHT SEAT PILOT, THE PILOT IN THE LEFT SEAT PUMPED THE THROTTLE. POWER WAS NOT REGAINED AND AN OFF-AIRPORT LANDING WAS MADE IN A GRAPE VINEYARD. POST-CRASH EXAMINATION SHOWED THE ENGINE WOULD RUN O.K. AT FULL POWER. HOWEVER, IF A MIXTURE CUT WAS ALLOWED TO DROP BELOW 1500 RPM, IT WOULD NOT RECOVER WHEN THE MIXTURE WAS PUT BACK TO RICH. THE EXHAUST STACKS EXHIBITED EXTREME RICH MIXTURE BURN COLOR. THE CARB FLOAT LEVEL OR METERING JETS MAY HAVE BEEN OUT OF TOLERANCE.
NTSB Probable Cause
A POWER LOSS DUE TO AN OVER-RICH ENGINE FOR UNDETERMINED REASONS. THE COMBINATION OF AN OVER-RICH RUNNING ENGINE AND THE PILOT'S PUMPING OF THE THROTTLE DURING THE RECOVERY ATTEMPT CAUSED THE ENGINE TO FLOOD.
Full Narrative
THE LEFT SEAT PILOT WAS PREPARING FOR HIS BIENNIAL FLIGHT REVIEW. AFTER TAKEOFF, AT 800FT AGL, THE RIGHT SEAT PILOT INDUCED A POWER LOSS USING THE MIXTURE. WHEN THE MIXTURE WAS RETURNED TO RICH BY THE RIGHT SEAT PILOT, THE PILOT IN THE LEFT SEAT PUMPED THE THROTTLE. POWER WAS NOT REGAINED AND AN OFF-AIRPORT LANDING WAS MADE IN A GRAPE VINEYARD. POST-CRASH EXAMINATION SHOWED THE ENGINE WOULD RUN O.K. AT FULL POWER. HOWEVER, IF A MIXTURE CUT WAS ALLOWED TO DROP BELOW 1500 RPM, IT WOULD NOT RECOVER WHEN THE MIXTURE WAS PUT BACK TO RICH. THE EXHAUST STACKS EXHIBITED EXTREME RICH MIXTURE BURN COLOR. THE CARB FLOAT LEVEL OR METERING JETS MAY HAVE BEEN OUT OF TOLERANCE.
Flight
Event TypeAccident
Event Time19:45 EDT
Nearest AirportMOORHEAD (0nm N)
Runway0
Flight Plan FiledNone
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftCessna 150H
Tail NumberN50294
Aircraft CategoryAir
DamageSubstantial
Operating RulePart 91
Engines1
Engine TypeReciprocating
Engine DetailsTeledyne Cont · O-200-A · Reciprocating · 100
Seats2
People & Injuries
Injury SummaryNo injuries (2 uninjured)
Fatal0
Serious0
Minor0
Uninjured2
Total2
Crew 1Age 27 · Second Class
Conditions
ConditionsVMC
LightDaylight
Wind60° @ 5 kt
Visibility20 sm
CeilingNone
Temperature / Dew Point0 C
Altimeter0