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NTSB Report
December 10, 1990 · Cessna 152 · N68776
Gilmer, TX
Overview
Report Status
Probable Cause
Event Type
Accident
Date
December 10, 1990
Injury Outcomes
1 injury (1 minor injury), 1 uninjured
Location
Gilmer, TX
Aircraft
Cessna 152
Tail Number
N68776
Operator
Barr Air Patrol
Injuries
Minor
Aircraft Damage
Substantial
NTSB Number
FTW91LA024
THE COMMERCIAL PILOT AND HIS PASSENGER WERE MANEUVERING AT 700 FEET MSL WHILE ON A PIPELINE PATROL AERIAL OBSERVATION FLIGHT, WHEN THE ENGINE STARTED RUNNING ROUGH. THE PILOT APPLIED FULL CARBURETOR HEAT AS HE STARTED TO TURN TO AN OPEN FIELD. THE ENGINE STOPPED RUNNING AND THE PILOT ESTABLISHED AN EMERGENCY DESCENT TO AN OPEN PASTURE. THE AIRPLANE WAS NOT ABLE TO CLEAR THE 20 TO 30 FEET TREES ADJACENT TO THE OPEN PASTURE AND THE UNSUCCESSFUL FORCED LANDING TERMINATED WITH THE AIRPLANE SUSTAINING SUBSTANTIAL DAMAGE AFTER IMPACTING THE TREES. THE PILOT TOLD THE FAA INSPECTOR THAT HE NORMALLY FLEW WITH THE CARBURETOR HEAT PARTIALLY OPEN. THE PILOT'S IMPROPER USE OF CARBURETOR HEAT INDUCED THE FORMATION OF CARBURETOR ICE WHICH CAUSED THE LOSS OF ENGINE POWER.
NTSB Probable Cause
A POWER LOSS DUE TO THE PILOT'S IMPROPER USE OF CARBURETOR HEAT.
Full Narrative
THE COMMERCIAL PILOT AND HIS PASSENGER WERE MANEUVERING AT 700 FEET MSL WHILE ON A PIPELINE PATROL AERIAL OBSERVATION FLIGHT, WHEN THE ENGINE STARTED RUNNING ROUGH. THE PILOT APPLIED FULL CARBURETOR HEAT AS HE STARTED TO TURN TO AN OPEN FIELD. THE ENGINE STOPPED RUNNING AND THE PILOT ESTABLISHED AN EMERGENCY DESCENT TO AN OPEN PASTURE. THE AIRPLANE WAS NOT ABLE TO CLEAR THE 20 TO 30 FEET TREES ADJACENT TO THE OPEN PASTURE AND THE UNSUCCESSFUL FORCED LANDING TERMINATED WITH THE AIRPLANE SUSTAINING SUBSTANTIAL DAMAGE AFTER IMPACTING THE TREES. THE PILOT TOLD THE FAA INSPECTOR THAT HE NORMALLY FLEW WITH THE CARBURETOR HEAT PARTIALLY OPEN. THE PILOT'S IMPROPER USE OF CARBURETOR HEAT INDUCED THE FORMATION OF CARBURETOR ICE WHICH CAUSED THE LOSS OF ENGINE POWER.
Flight
Event TypeAccident
Event Time08:20 CST
Nearest Airport0nm N
Runway0
Flight Plan FiledNone
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftCessna 152
Tail NumberN68776
Aircraft CategoryAir
DamageSubstantial
OperatorBarr Air Patrol
Operating RulePart 91
Engines1
Engine TypeReciprocating
Engine DetailsLycoming · O-235-L2C · Reciprocating · 110
Seats2
People & Injuries
Injury Summary1 injury (1 minor injury), 1 uninjured
Fatal0
Serious0
Minor1
Uninjured1
Total2
Crew 1Age 59 · Second Class
Conditions
ConditionsVMC
LightDaylight
Wind110° @ 4 kt
Visibility30 sm
CeilingNone
Temperature / Dew Point34 C / 30 C
Altimeter0
Observation Time13:46
Weather SourceWFAC