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NTSB Report
July 23, 1992 · Mooney M20F · N6730N
Eufaula, AL
Overview
Report Status
Probable Cause
Event Type
Accident
Date
July 23, 1992
Injury Outcomes
1 injury (1 minor injury)
Location
Eufaula, AL
Aircraft
Mooney M20F
Tail Number
N6730N
Operator
Brown Carl A
Injuries
Minor
Aircraft Damage
Substantial
NTSB Number
ATL92LA143
FOLLOWING A TEST FLIGHT AFTER MAINTENANCE, ON FINAL APPROACH TO THE RUNWAY, THE PILOT FELT HE WAS BELOW GLIDE PATH. AS HE ATTEMPTED TO ADD POWER TO ADJUST HIS DESCENT RATE, THE ENGINE FAILED TO RESPOND. THE PILOT WAS FORCED TO ATTEMPT AN EMERGENCY LANDING IN ROUGH TERRAIN NEAR THE APPROACH END OF THE RUNWAY, WHICH RESULTED IN SUBSTANTIAL DAMAGE TO THE AIRCRAFT AND MINOR INJURY TO THE PILOT. EXAMINATION OF THE ENGINE REVEALED THAT THE FUEL INJECTOR SERVO WAS PRODUCING A RICH MIXTURE, AT THE LOW POWER SETTING, AS A RESULT OF THE BUSHING BETWEEN THE DIAPHRAGMS STICKING.
NTSB Probable Cause
THE FAILURE OF THE FUEL INJECTOR SERVO AS A RESULT OF THE STICKING BUSHING BETWEEN THE DIAPHRAGMS.
Full Narrative
FOLLOWING A TEST FLIGHT AFTER MAINTENANCE, ON FINAL APPROACH TO THE RUNWAY, THE PILOT FELT HE WAS BELOW GLIDE PATH. AS HE ATTEMPTED TO ADD POWER TO ADJUST HIS DESCENT RATE, THE ENGINE FAILED TO RESPOND. THE PILOT WAS FORCED TO ATTEMPT AN EMERGENCY LANDING IN ROUGH TERRAIN NEAR THE APPROACH END OF THE RUNWAY, WHICH RESULTED IN SUBSTANTIAL DAMAGE TO THE AIRCRAFT AND MINOR INJURY TO THE PILOT. EXAMINATION OF THE ENGINE REVEALED THAT THE FUEL INJECTOR SERVO WAS PRODUCING A RICH MIXTURE, AT THE LOW POWER SETTING, AS A RESULT OF THE BUSHING BETWEEN THE DIAPHRAGMS STICKING.
Flight
Event TypeAccident
Event Time18:30 CDT
Nearest AirportEUFAULA (1nm S)
Runway36
Runway Length5000 ft
Runway Width100 ft
Flight Plan FiledNone
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftMooney M20F
Tail NumberN6730N
Aircraft CategoryAir
DamageSubstantial
OperatorBrown Carl A
Operating RulePart 91
Engines1
Engine TypeReciprocating
Engine DetailsLycoming · IO-360-A1A · Reciprocating · 200
Seats4
People & Injuries
Injury Summary1 injury (1 minor injury)
Fatal0
Serious0
Minor1
Uninjured0
Total1
Crew 1Age 53 · Third Class
Conditions
ConditionsVMC
LightDaylight
Wind150° @ 5 kt
Visibility7 sm
CeilingOvercast 25000 ft
Altimeter30.00 inHg
Observation Time22:51
Weather SourceWFAC