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NTSB Report
September 11, 1984 · Gates Learjet LR-24D · N45AJ
Chesterfield, MO
Overview
Report Status
Preliminary report
Event Type
Accident
Date
September 11, 1984
Injury Outcomes
No injuries (1 uninjured)
Location
Chesterfield, MO
Aircraft
Gates Learjet LR-24D
Tail Number
N45AJ
Operator
St Louis Flight Systems
Injuries
None
Aircraft Damage
Substantial
NTSB Number
MKC84LA274
THE ACFT WAS LANDED IN A THUNDERSTORM WITH A 16 KT LEFT QUARTERING TAILWIND. THE PLT WAS AWARE OF AN AREA ON THE RWY WHICH TENDED TO COLLECT WATER BUT DUE TO HEAVY PRECIPITATION THIS AREA COULD NOT BE VIEWED FROM THE COCKPIT. THE LEFT MAIN GEAR HYDROPLANED AS IT CONTACTED THIS AREA DURING THE LANDING ROLL RESULTING IN A 90 DEG RIGHT TURN. THE ACFT DEPARTED THE RIGHT SIDE OF THE RWY TRAVELING INTO ROUGH TERRAIN AT WHICH TIME THE LEFT MAIN GEAR PUNCTURED THE WING. HYDROPLANE MARKS WERE VISIBLE ON BOTH LEFT MAIN GEAR TIRES AFTER THE ACCIDENT.
Full Narrative
THE ACFT WAS LANDED IN A THUNDERSTORM WITH A 16 KT LEFT QUARTERING TAILWIND. THE PLT WAS AWARE OF AN AREA ON THE RWY WHICH TENDED TO COLLECT WATER BUT DUE TO HEAVY PRECIPITATION THIS AREA COULD NOT BE VIEWED FROM THE COCKPIT. THE LEFT MAIN GEAR HYDROPLANED AS IT CONTACTED THIS AREA DURING THE LANDING ROLL RESULTING IN A 90 DEG RIGHT TURN. THE ACFT DEPARTED THE RIGHT SIDE OF THE RWY TRAVELING INTO ROUGH TERRAIN AT WHICH TIME THE LEFT MAIN GEAR PUNCTURED THE WING. HYDROPLANE MARKS WERE VISIBLE ON BOTH LEFT MAIN GEAR TIRES AFTER THE ACCIDENT.
Flight
Event TypeAccident
Event Time20:50 CDT
Nearest AirportSpirit Of St. Louis (0nm N)
Runway7
Runway Length6008 ft
Runway Width150 ft
Flight Plan FiledIFR
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftGates Learjet LR-24D
Tail NumberN45AJ
Aircraft CategoryAir
DamageSubstantial
OperatorSt Louis Flight Systems
Operating RulePart 135
Engines2
Engine TypeTurbojet
Engine DetailsGe · CJ610-6 · Turbojet · 2950
Seats2
People & Injuries
Injury SummaryNo injuries (1 uninjured)
Fatal0
Serious0
Minor0
Uninjured1
Total1
Crew 1Age 30 · First Class
Conditions
ConditionsIMC
LightDark Night
Wind360° @ 15 kt
Visibility5 sm
CeilingOvercast 1500 ft
Temperature / Dew Point0 C
Altimeter0
Weather SourcePILO