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NTSB Report
November 28, 1990 · Asta N22S · N5056D
Homestead Afb, FL
Overview
Report Status
Probable Cause
Event Type
Accident
Date
November 28, 1990
Injury Outcomes
No injuries (3 uninjured)
Location
Homestead Afb, FL
Aircraft
Asta N22S
Tail Number
N5056D
Injuries
None
Aircraft Damage
Substantial
NTSB Number
MIA91GA034
FLIT EXPERIENCED INFLIT MALFUNCTION OF LDG GEAR SYSTEM WITH UNSAFE GEAR INDICATION. ON LDG ROLL THE LEFT MAIN LDG GEAR COLLAPSED SMOOTHLY. THE LEFT MAIN LDG GEAR SCREWJACK WAS FOUND SEPARATED DUE TO BENDING OVERSTRESS. NO OTHER FAILURES IN THE LDG GEAR SYSTEM WERE NOTED. ACCORDING TO THE ACFT MANUFACTURER NO FAILURES IN THE LDG GEAR SYSTEM COULD CAUSE BENDING OVERSTRESS OF THE SCREWJACK. ONLY PLACING THE WEIGHT OF THE AIRPLANE ON A RETRACTING OR EXTENDING GEAR COULD CAUSE THE FAILURE.
NTSB Probable Cause
THE BENDING OVERSTRESS FAILURE OF THE LEFT MAIN LANDING SCREWJACK AT AN UNDETERMINED TIME DURING FLIGHT FOR UNDETERMINED REASONS.
Full Narrative
FLIT EXPERIENCED INFLIT MALFUNCTION OF LDG GEAR SYSTEM WITH UNSAFE GEAR INDICATION. ON LDG ROLL THE LEFT MAIN LDG GEAR COLLAPSED SMOOTHLY. THE LEFT MAIN LDG GEAR SCREWJACK WAS FOUND SEPARATED DUE TO BENDING OVERSTRESS. NO OTHER FAILURES IN THE LDG GEAR SYSTEM WERE NOTED. ACCORDING TO THE ACFT MANUFACTURER NO FAILURES IN THE LDG GEAR SYSTEM COULD CAUSE BENDING OVERSTRESS OF THE SCREWJACK. ONLY PLACING THE WEIGHT OF THE AIRPLANE ON A RETRACTING OR EXTENDING GEAR COULD CAUSE THE FAILURE.
Flight
Event TypeAccident
Event Time05:45 EST
Nearest AirportHomestead, Afb (0nm)
Runway5
Runway Length11700 ft
Runway Width300 ft
Flight Plan FiledCvfr
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftAsta N22S
Tail NumberN5056D
Aircraft CategoryAir
DamageSubstantial
Operating RulePart 91
Engines2
Engine TypeTurboprop
Engine DetailsAllison · C250-B17E · Turboprop · 420
Seats4
People & Injuries
Injury SummaryNo injuries (3 uninjured)
Fatal0
Serious0
Minor0
Uninjured3
Total3
Crew 1Age 50 · First Class
Conditions
ConditionsVMC
LightDawn
Wind70° @ 7 kt
Visibility7 sm
CeilingNone
Temperature / Dew Point70 F
Altimeter30.00 inHg
Observation Time10:45
Weather SourceWFAC