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NTSB Report
March 21, 1992 · Beech F33A · N2046W
Langdon, ND
Overview
Report Status
Probable Cause
Event Type
Accident
Date
March 21, 1992
Injury Outcomes
No injuries (1 uninjured)
Location
Langdon, ND
Aircraft
Beech F33A
Tail Number
N2046W
Operator
Larson Implement
Injuries
None
Aircraft Damage
Substantial
NTSB Number
CHI92LA117
THE PILOT EXTENDED THE GEAR MANUALLY FOLLOWING A COMPLETE ELECTRICAL FAILURE. ACCORDING TO THE PILOT, HE TURNED THE LANDING GEAR HANDCRANK UNTIL HE FELT HEAVY RESISTANCE AND HE THOUGHT THE LANDING GEAR WAS DOWN AND LOCKED; HOWEVER, DURING LANDING, THE GEAR COLLAPSED. POST ACCIDENT INSPECTION OF THE AIRPLANE'S ELECTRICAL SYSTEM DISCLOSED A BROKEN BRUSH IN THE ALTERNATOR.
NTSB Probable Cause
FAILURE OF THE PILOT TO FULLY EXTEND THE LANDING GEAR USING MANUAL PROCEDURES AFTER AN ELECTRICAL SYSTEM FAILURE. A FACTOR ASSOCIATED WITH THE ACCIDENT IS THE PILOT MISREADING A PUBLISHED EMERGENCY PROCEDURE.
Full Narrative
THE PILOT EXTENDED THE GEAR MANUALLY FOLLOWING A COMPLETE ELECTRICAL FAILURE. ACCORDING TO THE PILOT, HE TURNED THE LANDING GEAR HANDCRANK UNTIL HE FELT HEAVY RESISTANCE AND HE THOUGHT THE LANDING GEAR WAS DOWN AND LOCKED; HOWEVER, DURING LANDING, THE GEAR COLLAPSED. POST ACCIDENT INSPECTION OF THE AIRPLANE'S ELECTRICAL SYSTEM DISCLOSED A BROKEN BRUSH IN THE ALTERNATOR.
Flight
Event TypeAccident
Event Time18:00 CST
Nearest AirportRobertson Field (0nm)
Runway35
Runway Length3000 ft
Runway Width50 ft
Flight Plan FiledNone
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftBeech F33A
Tail NumberN2046W
Aircraft CategoryAir
DamageSubstantial
OperatorLarson Implement
Operating RulePart 91
Engines1
Engine TypeReciprocating
Engine DetailsContinental · I0-520-BB · Reciprocating · 280
Seats5
People & Injuries
Injury SummaryNo injuries (1 uninjured)
Fatal0
Serious0
Minor0
Uninjured1
Total1
Crew 1Age 31 · Third Class
Conditions
ConditionsVMC
LightDaylight
WindCalm
Visibility15 sm
CeilingNone
Temperature / Dew Point36 C / 0 C
Altimeter0
Weather SourcePILO