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NTSB Report
August 13, 1992 · Beech 76 · N67052
Nantucket, MA
Overview
Report Status
Probable Cause
Event Type
Accident
Date
August 13, 1992
Injury Outcomes
1 injury (1 serious injury)
Location
Nantucket, MA
Aircraft
Beech 76
Tail Number
N67052
Operator
John F Mannix
Injuries
Serious
Aircraft Damage
Substantial
NTSB Number
NYC92LA178
THE PILOT WAS CRUISING AT 2500 FEET, WHEN THE LEFT ENGINE QUIT, FOLLOWED SHORTLY BY THE RIGHT ENGINE. HE MADE A QUICK, UNSUCCESSFUL ATTEMPT TO RESTART THE ENGINES AND THEN CONCENTRATED ON EXECUTING A FORCED LANDING IN THE OCEAN. THE AIRPLANE WAS RECOVERED, AND AFTER REPLACING THE SALT WATER DAMAGED MAGNETOS AND FUEL PUMP, THE LEFT ENGINE WAS RUN FROM IDLE TO FULL POWER USING FUEL THAT WAS IN THE TANK. THE PILOT SAID THAT HE DID NOT USE CARBURETOR HEAT DURING THE FLIGHT. THE TEMPERATURE/DEW POINT WAS 66/59 DEGREES F. THE FAA CHART FOR CARBURETOR ICING PROBABILITY SHOWNS A MODERATE CHANCE OF ICING AT CRUISE POWER FOR THIS TEMPERATURE/DEW POINT COMBINATION.
NTSB Probable Cause
THE PILOT'S FAILURE TO USE CARBURETOR HEAT, RESULTING IN CARBURETOR ICE AND LOSS OF ENGINE POWER AND SUBSEQUENT FORCED LANDING IN THE OCEAN.
Full Narrative
THE PILOT WAS CRUISING AT 2500 FEET, WHEN THE LEFT ENGINE QUIT, FOLLOWED SHORTLY BY THE RIGHT ENGINE. HE MADE A QUICK, UNSUCCESSFUL ATTEMPT TO RESTART THE ENGINES AND THEN CONCENTRATED ON EXECUTING A FORCED LANDING IN THE OCEAN. THE AIRPLANE WAS RECOVERED, AND AFTER REPLACING THE SALT WATER DAMAGED MAGNETOS AND FUEL PUMP, THE LEFT ENGINE WAS RUN FROM IDLE TO FULL POWER USING FUEL THAT WAS IN THE TANK. THE PILOT SAID THAT HE DID NOT USE CARBURETOR HEAT DURING THE FLIGHT. THE TEMPERATURE/DEW POINT WAS 66/59 DEGREES F. THE FAA CHART FOR CARBURETOR ICING PROBABILITY SHOWNS A MODERATE CHANCE OF ICING AT CRUISE POWER FOR THIS TEMPERATURE/DEW POINT COMBINATION.
Flight
Event TypeAccident
Event Time08:30 EDT
Nearest Airport0nm N
Runway0
Flight Plan FiledNone
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftBeech 76
Tail NumberN67052
Aircraft CategoryAir
DamageSubstantial
OperatorJohn F Mannix
Operating RulePart 91
Engines2
Engine TypeReciprocating
Engine DetailsLycoming · O-360-A16G6D · Reciprocating · 180
Seats4
People & Injuries
Injury Summary1 injury (1 serious injury)
Fatal0
Serious1
Minor0
Uninjured0
Total1
Crew 1Age 62 · Third Class
Conditions
ConditionsVMC
LightDaylight
Wind180° @ 7 kt
Visibility10 sm
CeilingNone
Temperature / Dew Point66 F / 59
Altimeter0
Weather SourcePILO