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NTSB Report
September 13, 1982 · Fairchild/Swearingen SA226TC · N5471M
Denver, CO
Overview
Report Status
Preliminary report
Event Type
Incident
Date
September 13, 1982
Injury Outcomes
No injuries (5 uninjured)
Location
Denver, CO
Aircraft
Fairchild/Swearingen SA226TC
Tail Number
N5471M
Operator
Air Midwest
Injuries
None
Aircraft Damage
Minor
NTSB Number
DEN82IA192
DURING TAKEOFF ON A MAINTENANCE FERRY FLIGHT, WITH A MECHANIC FLYING FROM THE RIGHT SEAT, THE AIRCRAFT WOULD NOT ACCELERATE ABOVE V1 AND WOULD NOT ROTATE EVEN WITH FULL AFT YOKE. THE CAPTAIN ABORTED THE TAKEOFF AND THE AIRCRAFT WAS STOPPED AT THE END OF THE RUNWAY WITH THE RIGHT GEAR ON THE OVERRUN AREA. AFTER THE AIRCRAFT STOPPED, CREWMEMBERS EXTINGUISHED TWO SMALL FIRES IN THE MAIN GEAR BRAKES. INVESTIGATION DID NOT REVEAL THE REASON THE AIRCRAFT WOULD NOT ACCELERATE, HOWEVER IT WAS NOTED THAT BOTH MAIN BRAKE ASSEMBLIES HAD BEEN SUBJECTED TO EXTREME HEAT AND RAPID COOLING. IN ADDITION, ALL OF THE BRAKE PUCKS WERE WORN THIN. THIS DAMAGE WAS CONSISTENT WITH TAKING OFF WITH THE PARKING BRAKE ENGAGED OR INADVERTENT APPLICATION OF THE TOE BRAKES DURING TAKEOFF ROLL.
Full Narrative
DURING TAKEOFF ON A MAINTENANCE FERRY FLIGHT, WITH A MECHANIC FLYING FROM THE RIGHT SEAT, THE AIRCRAFT WOULD NOT ACCELERATE ABOVE V1 AND WOULD NOT ROTATE EVEN WITH FULL AFT YOKE. THE CAPTAIN ABORTED THE TAKEOFF AND THE AIRCRAFT WAS STOPPED AT THE END OF THE RUNWAY WITH THE RIGHT GEAR ON THE OVERRUN AREA. AFTER THE AIRCRAFT STOPPED, CREWMEMBERS EXTINGUISHED TWO SMALL FIRES IN THE MAIN GEAR BRAKES. INVESTIGATION DID NOT REVEAL THE REASON THE AIRCRAFT WOULD NOT ACCELERATE, HOWEVER IT WAS NOTED THAT BOTH MAIN BRAKE ASSEMBLIES HAD BEEN SUBJECTED TO EXTREME HEAT AND RAPID COOLING. IN ADDITION, ALL OF THE BRAKE PUCKS WERE WORN THIN. THIS DAMAGE WAS CONSISTENT WITH TAKING OFF WITH THE PARKING BRAKE ENGAGED OR INADVERTENT APPLICATION OF THE TOE BRAKES DURING TAKEOFF ROLL.
Flight
Event TypeIncident
Event Time05:20 MDT
Nearest AirportStapleton International (0nm N)
Runway8L
Runway Length7924 ft
Runway Width150 ft
Flight Plan FiledIFR
Aircraft FireGrd
Aircraft ExplosionGrd
Aircraft
AircraftFairchild/Swearingen SA226TC
Tail NumberN5471M
Aircraft CategoryAir
DamageMinor
OperatorAir Midwest
Operating RulePart 135
Engines2
Engine TypeTurboprop
Engine DetailsAiresearch · TPE33134W303G · Turboprop · 840
Seats17
People & Injuries
Injury SummaryNo injuries (5 uninjured)
Fatal0
Serious0
Minor0
Uninjured5
Total5
Crew 1Age 34 · First Class
Conditions
ConditionsVMC
LightDark Night
WindCalm
Visibility7 sm
CeilingNone
Temperature / Dew Point12 C / 0 C
Altimeter29.00 inHg