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NTSB Report
September 21, 1992 · Cessna 210L · N777BK
Orlando, FL
Overview
Report Status
Probable Cause
Event Type
Accident
Date
September 21, 1992
Injury Outcomes
No injuries (1 uninjured)
Location
Orlando, FL
Aircraft
Cessna 210L
Tail Number
N777BK
Operator
Flight Express
Injuries
None
Aircraft Damage
Substantial
NTSB Number
MIA92LA188
FLIGHT WAS UNABLE TO GET SAFE INDICATION FOR LANDING GEAR EXTENDED WHILE APPROACHING DESTINATION AIRPORT. FLIGHT RETURNED TO DEPARTURE AIRPORT. AFTER ACCOMPLISHING EMERGENCY PROCEDURES FOR GEAR EXTENSION, GEAR SAFE INDICATION WAS STILL NOT OBTAINED. PILOT DETERMINED ALL HYDRAULIC FLUID HAD BEEN LOST. FLIGHT WAS LANDED WITH THE NOSE GEAR LOCKED AND THE MAIN GEARS PARTIALLY EXTENDED. POSTLANDING EXAMINATION REVEALED RIGHT MAIN GEAR HYDRAULIC ACTUATOR HAD FAILED DUE TO OVERSTRESS ALONG METAL GRAIN BOUNDARIES AND AT AREA OF LOW WALL THICKNESS. ALL HYDRAULIC SYSTEM PRESSURE WERE FOUND TO BE NORMAL AND NO OTHER LANDING GEAR SYSTEM FAILURES WERE FOUND. AFTER FAILURE OF THE GEAR ACTUATOR ALL NORMAL AND EMERGENCY SYSTEM FLUID WAS LOST THROUGH THE ACTUATOR.
NTSB Probable Cause
FAILURE OF THE RIGHT MAIN LANDING GEAR ACTUATOR DUE TO OVERSTRESS FOR UNDETERMINED REASONS WHICH RESULTED IN LOSS OF ALL LANDING GEAR SYSTEM HYDRAULIC FLUID WHICH IN TURN RESULTED IN THE PILOT BEING UNABLE TO EXTEND AND LOCK THE LANDING GEAR.
Full Narrative
FLIGHT WAS UNABLE TO GET SAFE INDICATION FOR LANDING GEAR EXTENDED WHILE APPROACHING DESTINATION AIRPORT. FLIGHT RETURNED TO DEPARTURE AIRPORT. AFTER ACCOMPLISHING EMERGENCY PROCEDURES FOR GEAR EXTENSION, GEAR SAFE INDICATION WAS STILL NOT OBTAINED. PILOT DETERMINED ALL HYDRAULIC FLUID HAD BEEN LOST. FLIGHT WAS LANDED WITH THE NOSE GEAR LOCKED AND THE MAIN GEARS PARTIALLY EXTENDED. POSTLANDING EXAMINATION REVEALED RIGHT MAIN GEAR HYDRAULIC ACTUATOR HAD FAILED DUE TO OVERSTRESS ALONG METAL GRAIN BOUNDARIES AND AT AREA OF LOW WALL THICKNESS. ALL HYDRAULIC SYSTEM PRESSURE WERE FOUND TO BE NORMAL AND NO OTHER LANDING GEAR SYSTEM FAILURES WERE FOUND. AFTER FAILURE OF THE GEAR ACTUATOR ALL NORMAL AND EMERGENCY SYSTEM FLUID WAS LOST THROUGH THE ACTUATOR.
Flight
Event TypeAccident
Event Time10:55 EDT
Nearest AirportOrlando Executive (0nm)
Runway31
Runway Length4638 ft
Runway Width100 ft
Flight Plan FiledNone
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftCessna 210L
Tail NumberN777BK
Aircraft CategoryAir
DamageSubstantial
OperatorFlight Express
Operating RulePart 135
Engines1
Engine TypeReciprocating
Engine DetailsContinental · IO-520-L · Reciprocating · 285
Seats1
People & Injuries
Injury SummaryNo injuries (1 uninjured)
Fatal0
Serious0
Minor0
Uninjured1
Total1
Crew 1Age 51 · Second Class
Conditions
ConditionsVMC
LightDaylight
Wind260° @ 4 kt
Visibility7 sm
CeilingNone
Altimeter29.00 inHg
Observation Time14:57
Weather SourceWFAC