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NTSB Report
December 21, 1982 · Swearingen SA-227AC · N2671V
Gillette, WY
Overview
Report Status
Preliminary report
Event Type
Accident
Date
December 21, 1982
Injury Outcomes
No injuries (5 uninjured)
Location
Gillette, WY
Aircraft
Swearingen SA-227AC
Tail Number
N2671V
Operator
Pioneer Airlines
Injuries
None
Aircraft Damage
Substantial
NTSB Number
DEN83LA036
DIRECTIONAL CONTROL WAS LOST IN THE EARLY STAGE OF THE TAKEOFF ROLL. THE ACFT DEPARTED THE RWY 400 FT DOWN THE RWY & TRAVELLED 85 FT OFF THE SIDE OF THE RWY. ONE RWY LIGHT WAS DESTROYED. THE ACFT HAD COME FROM THE FACTORY EQUIPPED WITH AN ANTI-SKID BRAKE SYSTEM. THE SYSTEM WAS REPLACED WITH A STANDARD BRAKING SYSTEM PRIOR TO THE ACFT'S FIRST PASSENGER FLT. DURING THIS PROCESS HYDRAULIC LINES ATTACHED TO THE PARKING BRAKE SHUTTLE VALVE UNDER THE INSTRUMENT PANEL AREA WERE INADVERTENTLY REVERSED, ALLOWING BRAKING ACTION TO TAKE PLACE ON THE OPPOSITE LANDING GEAR OF THE BRAKE PEDAL BEING DEPRESSED. THE FLT CREW WAS UNAWARE OF THIS CONDITION SINCE THEY HAD BEEN USING ASYMMETRICAL THRUST FOR DIRECTIONAL CONTROL UNTIL THIS TAKEOFF.
Full Narrative
DIRECTIONAL CONTROL WAS LOST IN THE EARLY STAGE OF THE TAKEOFF ROLL. THE ACFT DEPARTED THE RWY 400 FT DOWN THE RWY & TRAVELLED 85 FT OFF THE SIDE OF THE RWY. ONE RWY LIGHT WAS DESTROYED. THE ACFT HAD COME FROM THE FACTORY EQUIPPED WITH AN ANTI-SKID BRAKE SYSTEM. THE SYSTEM WAS REPLACED WITH A STANDARD BRAKING SYSTEM PRIOR TO THE ACFT'S FIRST PASSENGER FLT. DURING THIS PROCESS HYDRAULIC LINES ATTACHED TO THE PARKING BRAKE SHUTTLE VALVE UNDER THE INSTRUMENT PANEL AREA WERE INADVERTENTLY REVERSED, ALLOWING BRAKING ACTION TO TAKE PLACE ON THE OPPOSITE LANDING GEAR OF THE BRAKE PEDAL BEING DEPRESSED. THE FLT CREW WAS UNAWARE OF THIS CONDITION SINCE THEY HAD BEEN USING ASYMMETRICAL THRUST FOR DIRECTIONAL CONTROL UNTIL THIS TAKEOFF.
Flight
Event TypeAccident
Event Time20:15 MST
Nearest AirportGillette Campbelll County (0nm N)
Runway15
Runway Length6500 ft
Runway Width75 ft
Flight Plan FiledVFR
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftSwearingen SA-227AC
Tail NumberN2671V
Aircraft CategoryAir
DamageSubstantial
OperatorPioneer Airlines
Operating RulePart 135
Engines2
Engine TypeTurboprop
Engine DetailsGarrett · TPE331 · Turboprop · 1000
Seats21
People & Injuries
Injury SummaryNo injuries (5 uninjured)
Fatal0
Serious0
Minor0
Uninjured5
Total5
Crew 1Age 45 · First Class
Conditions
ConditionsVMC
LightDark Night
Wind210° @ 20 kt
Visibility20 sm
CeilingNone
Temperature / Dew Point0 C
Altimeter29.00 inHg
Observation Time20:00