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NTSB Report
August 10, 1982 · Cessna 421C · N6771C
Bountiful, UT
Overview
Report Status
Preliminary report
Event Type
Accident
Date
August 10, 1982
Injury Outcomes
No injuries (1 uninjured)
Location
Bountiful, UT
Aircraft
Cessna 421C
Tail Number
N6771C
Operator
Hoskings Exploration Helicopte
Injuries
None
Aircraft Damage
Substantial
NTSB Number
DEN82DA160
THE PILOT REPORTED THAT THE APPROACH AND LANDING TO TOUCHDOWN WERE NORMAL. AT TOUCHDOWN, THE AIRCRAFT SHUTTERED AND PULLED TO THE RIGHT, BUT WAS KEPT ON THE RUNWAY THROUGH THE USE OF LEFT BRAKE AND NOSEWHEEL STEERING. AFTER CONTINUING DOWN THE RUNWAY FOR ABOUT 1500 FT, THE AIRCRAFT SLOWED TO APPROXIMATELY 10 MPH, THEN YAWED VIOLENTLY TO THE RIGHT AND SKIDDED WITH THE LEFT WING FORWARD. THE LEFT MAIN GEAR COLLAPSED AS THE AIRCRAFT CAME TO A HALT. WHEN EXAMINED, THE RIGHT WHEEL WOULD ROTATE SLOWER THAN THE LEFT WHEN BOTH WERE ROTATED TOGETHER, BUT NEITHER LOCKED UP. WHILE THE RIGHT WHEEL WAS BEING TURNED, A BRAKE PUCK FELL OUT OF THE BRAKE ASSEMBLY. A DISASSEMBLY OF THE BRAKE REVEALED A SECOND PUCK WAS ALSO LOOSE. AFTER REASSEMBLY, THE RIGHT BRAKE OPERATED NORMALLY.
Full Narrative
THE PILOT REPORTED THAT THE APPROACH AND LANDING TO TOUCHDOWN WERE NORMAL. AT TOUCHDOWN, THE AIRCRAFT SHUTTERED AND PULLED TO THE RIGHT, BUT WAS KEPT ON THE RUNWAY THROUGH THE USE OF LEFT BRAKE AND NOSEWHEEL STEERING. AFTER CONTINUING DOWN THE RUNWAY FOR ABOUT 1500 FT, THE AIRCRAFT SLOWED TO APPROXIMATELY 10 MPH, THEN YAWED VIOLENTLY TO THE RIGHT AND SKIDDED WITH THE LEFT WING FORWARD. THE LEFT MAIN GEAR COLLAPSED AS THE AIRCRAFT CAME TO A HALT. WHEN EXAMINED, THE RIGHT WHEEL WOULD ROTATE SLOWER THAN THE LEFT WHEN BOTH WERE ROTATED TOGETHER, BUT NEITHER LOCKED UP. WHILE THE RIGHT WHEEL WAS BEING TURNED, A BRAKE PUCK FELL OUT OF THE BRAKE ASSEMBLY. A DISASSEMBLY OF THE BRAKE REVEALED A SECOND PUCK WAS ALSO LOOSE. AFTER REASSEMBLY, THE RIGHT BRAKE OPERATED NORMALLY.
Flight
Event TypeAccident
Event Time19:00 MDT
Nearest AirportSalt Lake Skypark (0nm N)
Runway34
Runway Length4700 ft
Runway Width70 ft
Flight Plan FiledVFR
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftCessna 421C
Tail NumberN6771C
Aircraft CategoryAir
DamageSubstantial
OperatorHoskings Exploration Helicopte
Operating RulePart 91
Engines2
Engine TypeReciprocating
Engine DetailsContinental · GTSIO-520-L · Reciprocating · 375
Seats8
People & Injuries
Injury SummaryNo injuries (1 uninjured)
Fatal0
Serious0
Minor0
Uninjured1
Total1
Crew 1Age 31 · First Class
Conditions
ConditionsVMC
LightDaylight
Wind30° @ 10 kt
Visibility40 sm
CeilingNone
Temperature / Dew Point19 C / 0 C
Altimeter30.00 inHg
Observation Time00:52