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NTSB Report
September 13, 1989 · Beech G18S · N9604R
Jackson, MS
Overview
Report Status
Probable Cause
Event Type
Incident
Date
September 13, 1989
Injury Outcomes
No injuries (1 uninjured)
Location
Jackson, MS
Aircraft
Beech G18S
Tail Number
N9604R
Injuries
None
Aircraft Damage
Minor
NTSB Number
MIA89IA247
THE PLT LOWERED THE LANDING GEAR SELECTOR HANDLE WHILE ON APCH TO LAND BUT THE GEAR DID NOT EXTEND. THE FLT DEPARTED THE ARPT TRAFFIC AREA & THE PLT ATTEMPTED TO LOWER THE GEAR VIA THE EMERGENCY EXTENSION PROCEDURES BUT WAS UNABLE. THE PLT PERFORMED A LOW APCH PAST THE TOWER FOR CONFIRMATION THAT THE GEAR WAS DOWN & WAS ADVISED THAT IT APPEARED TO BE. THE FLT RETURNED FOR LANDING & AFTER TOUCHDOWN, THE GEAR COLLAPSED. AFTER THE INCIDENT WHILE RAISING THE PLANE FROM THE RWY, THE PLT WAS ASKED TO LOWER THE GEAR VIA THE EMERGENCY METHOD BUT WAS UNABLE BECAUSE HE RELEASED THE CLUTCH WHILE CRANKING THE GEAR DOWN. THE CORRECT PROCEDURE WAS TO HOLD THE CLUTCH IN WHILE DOING SO. AN EXAM OF THE ACFT REVEALED A FAILURE OF THE DYNAMIC BRAKE RELAY. THE PURPOSE OF THE RELAY WAS TO PREVENT COASTING OF THE GEAR MOTOR & GEARS BY MOMENTARILY REVERSING THE MOTOR WHEN THE UP LIMIT WAS REACHED, BUT THE FAILURE PREVENTED IT FROM DOING SO. THE FAILED COMPONENT WAS REPLACED & THE GEAR OPERATED NORMALLY.
NTSB Probable Cause
FAILURE OF THE PILOT TO CORRECTLY PERFORM THE EMERGENCY GEAR EXTENSION PROCEDURES. CONTRIBUTING TO THE ACCIDENT WAS THE FAILURE OF THE NORMAL GEAR EXTENSION SYSTEM.
Full Narrative
THE PLT LOWERED THE LANDING GEAR SELECTOR HANDLE WHILE ON APCH TO LAND BUT THE GEAR DID NOT EXTEND. THE FLT DEPARTED THE ARPT TRAFFIC AREA & THE PLT ATTEMPTED TO LOWER THE GEAR VIA THE EMERGENCY EXTENSION PROCEDURES BUT WAS UNABLE. THE PLT PERFORMED A LOW APCH PAST THE TOWER FOR CONFIRMATION THAT THE GEAR WAS DOWN & WAS ADVISED THAT IT APPEARED TO BE. THE FLT RETURNED FOR LANDING & AFTER TOUCHDOWN, THE GEAR COLLAPSED. AFTER THE INCIDENT WHILE RAISING THE PLANE FROM THE RWY, THE PLT WAS ASKED TO LOWER THE GEAR VIA THE EMERGENCY METHOD BUT WAS UNABLE BECAUSE HE RELEASED THE CLUTCH WHILE CRANKING THE GEAR DOWN. THE CORRECT PROCEDURE WAS TO HOLD THE CLUTCH IN WHILE DOING SO. AN EXAM OF THE ACFT REVEALED A FAILURE OF THE DYNAMIC BRAKE RELAY. THE PURPOSE OF THE RELAY WAS TO PREVENT COASTING OF THE GEAR MOTOR & GEARS BY MOMENTARILY REVERSING THE MOTOR WHEN THE UP LIMIT WAS REACHED, BUT THE FAILURE PREVENTED IT FROM DOING SO. THE FAILED COMPONENT WAS REPLACED & THE GEAR OPERATED NORMALLY.
Flight
Event TypeIncident
Event Time20:45 CDT
Nearest AirportJackson Int'L (0nm N)
Runway15R
Runway Length8501 ft
Runway Width150 ft
Flight Plan FiledVFR
Aircraft FireGrd
Aircraft ExplosionNo
Aircraft
AircraftBeech G18S
Tail NumberN9604R
Aircraft CategoryAir
DamageMinor
Operating RulePart 135
Engines2
Engine TypeReciprocating
Engine DetailsP&W · R-985-AN-14B · Reciprocating · 450
People & Injuries
Injury SummaryNo injuries (1 uninjured)
Fatal0
Serious0
Minor0
Uninjured1
Total1
Crew 1Age 42 · Second Class
Conditions
ConditionsVMC
LightNr
WindCalm
Visibility7 sm
CeilingNone
Altimeter30.00 inHg
Observation Time01:56
Weather SourceWFAC