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NTSB Report
September 21, 1992 · Cessna 210L · N2013S
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
N2013S
Operator
Flight Express
Injuries
None
Aircraft Damage
Substantial
NTSB Number
MIA92LA189
PILOT STATED THAT WHILE ATTEMPTING TO EXTEND THE LANDING GEAR THE GEAR HYDRAULIC MOTOR OPERATED BUT THE GEAR DID NOT EXTEND. AFTER SEVERAL SECONDS OF GEAR MOTOR OPERATION THE CIRCUIT BREAKER FOR THE GEAR MOTOR POPPED. FURTHER ATTEMPTS TO EXTEND THE GEAR BY NORMAL AND EMERGENCY PROCEDURES WERE UNSUCCESSFUL. A GEAR UP LANDING WAS MADE. AFTER THE ACCIDENT THE AIRCRAFT WAS RAISED AND THE LANDING GEAR WAS EXTENDED BY USE OF THE MANUAL GEAR EXTENSION EMERGENCY HYDRAULIC PUMP. ACCORDING TO MAINTENANCE PERSONNEL A WIRE TO THE NOSE LANDING GEAR SQUAT SWITCH WAS CHAFFED AND GROUNDED WHICH CAUSED THE SYSTEM TO BE SIGNALLED FOR GEAR UP AT ALL TIMES. THEY FURTHER STATED THE PILOT COULD NOT EXTEND THE GEAR BY USE OF THE BACKUP HYDRAULIC PUMP BECAUSE THE GEAR DOWN SOLENOID HAD OVERHEATED DURING ATTEMPTS TO LOWER THE GEAR AND FROZE IN THE GEAR UP POSITION. AFTER THE SOLENOID COOLED AFTER LANDING THEY WERE ABLE TO MANUALLY LOWER THE GEAR.
NTSB Probable Cause
UNDETECTED CHAFFING AND GROUNDING OF A WIRE TO THE NOSE LANDING GEAR SQUAT SWITCH WHICH RESULTED IN THE LANDING GEAR BEING SIGNALLED AT ALL TIMES FOR GEAR UP WHEN ELECTRICAL POWER WAS APPLIED TO THE SYSTEM. CONTRIBUTING TO THE ACCIDENT WAS THE OVERHEATING OF THE GEAR DOWN SOLENOID WHICH CAUSED IT TO STICK IN THE GEAR UP POSITION AND PREVENTED THE GEAR FROM BEING MANUALLY EXTENDED.
Full Narrative
PILOT STATED THAT WHILE ATTEMPTING TO EXTEND THE LANDING GEAR THE GEAR HYDRAULIC MOTOR OPERATED BUT THE GEAR DID NOT EXTEND. AFTER SEVERAL SECONDS OF GEAR MOTOR OPERATION THE CIRCUIT BREAKER FOR THE GEAR MOTOR POPPED. FURTHER ATTEMPTS TO EXTEND THE GEAR BY NORMAL AND EMERGENCY PROCEDURES WERE UNSUCCESSFUL. A GEAR UP LANDING WAS MADE. AFTER THE ACCIDENT THE AIRCRAFT WAS RAISED AND THE LANDING GEAR WAS EXTENDED BY USE OF THE MANUAL GEAR EXTENSION EMERGENCY HYDRAULIC PUMP. ACCORDING TO MAINTENANCE PERSONNEL A WIRE TO THE NOSE LANDING GEAR SQUAT SWITCH WAS CHAFFED AND GROUNDED WHICH CAUSED THE SYSTEM TO BE SIGNALLED FOR GEAR UP AT ALL TIMES. THEY FURTHER STATED THE PILOT COULD NOT EXTEND THE GEAR BY USE OF THE BACKUP HYDRAULIC PUMP BECAUSE THE GEAR DOWN SOLENOID HAD OVERHEATED DURING ATTEMPTS TO LOWER THE GEAR AND FROZE IN THE GEAR UP POSITION. AFTER THE SOLENOID COOLED AFTER LANDING THEY WERE ABLE TO MANUALLY LOWER THE GEAR.
Flight
Event TypeAccident
Event Time15:47 EDT
Nearest AirportOrlando Executive (0nm)
Runway7
Runway Length5998 ft
Runway Width150 ft
Flight Plan FiledIFR
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftCessna 210L
Tail NumberN2013S
Aircraft CategoryAir
DamageSubstantial
OperatorFlight Express
Operating RulePart 135
Engines1
Engine TypeReciprocating
Engine DetailsContinental · IO-520-L3B · Reciprocating · 285
Seats1
People & Injuries
Injury SummaryNo injuries (1 uninjured)
Fatal0
Serious0
Minor0
Uninjured1
Total1
Crew 1Age 30 · First Class
Conditions
ConditionsVMC
LightDaylight
Wind40° @ 5 kt
Visibility10 sm
CeilingBroken clouds 4700 ft
Altimeter29.00 inHg
Observation Time19:45
Weather SourceWFAC