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NTSB Report
April 15, 1992 · Fokker F.28 MK4000 F.28 MK400 · N495US
Charlotte, NC
Overview
Report Status
Probable Cause
Event Type
Incident
Date
April 15, 1992
Injury Outcomes
No injuries (60 uninjured)
Location
Charlotte, NC
Aircraft
Fokker F.28 MK4000 F.28 MK400
Tail Number
N495US
Operator
Usair
Injuries
None
NTSB Number
ATL92IA080
THE FLIGHT WAS ON THE TAKEOFF ROLL FOR RUNWAY 18L, WITH THE CAPTAIN AT THE CONTROLS. THE FLT CREW REPORTED AN AIRSPEED STAGNATION, FOLLOWED BY A NOTICEABLE DECELERATION, AFTER THE 'V1' CALLOUT. THE CAPTAIN REJECTED THE TAKEOFF, HOWEVER, THE AIRCRAFT OVERRAN THE RUNWAY. THE CREW REPORTED THAT THE AIRCRAFT NEVER REACHED V1, SINCE USAIR PROCEDURES STATE THAT THE PILOT NOT FLYING WILL INITIATE THE V1 CALL 5 KNOTS PRIOR TO COMPUTED V1. ROTATION SPEED (VR) WAS EQUAL TO V1 FOR THE TAKEOFF CONDITIONS. A READOUT OF THE CVR INDICATED THAT THE F/O CALLED 'V1', THEN 'R' (ROTATE) PRIOR TO THE ABORT. DFDR READOUT SHOWED THAT THERE WAS A SMALL DROP IN AIRSPEED (1.92 KNOTS) AT 128.63 KNOTS, HOWEVER, THE AIRSPEED SUBSEQUENTLY CLIMBED TO 137.8 KNOTS. COMPUTED V1/VR WAS 132 KTS, V2 WAS 137 KTS. THE FLT CREW STATED THAT THE AIRCRAFT DID NOT ROTATE, HOWEVER WITNESSES (INCLUDING A TOWER CONTROLLER) REPORTED THAT THE AIRCRAFT DID ROTATE PRIOR TO THE ABORT. AN EXAMINATION OF THE AIRCRAFT SYSTEMS FAILED TO EXPLAIN THE REPORTED DECELERATION.
NTSB Probable Cause
THE PILOT-IN-COMMAND'S DECISION TO REJECT THE TAKEOFF AT A SPEED IN EXCESS OF V1, RESULTING IN AN INADEQUATE DISTANCE TO STOP THE AIRCRAFT.
Full Narrative
THE FLIGHT WAS ON THE TAKEOFF ROLL FOR RUNWAY 18L, WITH THE CAPTAIN AT THE CONTROLS. THE FLT CREW REPORTED AN AIRSPEED STAGNATION, FOLLOWED BY A NOTICEABLE DECELERATION, AFTER THE 'V1' CALLOUT. THE CAPTAIN REJECTED THE TAKEOFF, HOWEVER, THE AIRCRAFT OVERRAN THE RUNWAY. THE CREW REPORTED THAT THE AIRCRAFT NEVER REACHED V1, SINCE USAIR PROCEDURES STATE THAT THE PILOT NOT FLYING WILL INITIATE THE V1 CALL 5 KNOTS PRIOR TO COMPUTED V1. ROTATION SPEED (VR) WAS EQUAL TO V1 FOR THE TAKEOFF CONDITIONS. A READOUT OF THE CVR INDICATED THAT THE F/O CALLED 'V1', THEN 'R' (ROTATE) PRIOR TO THE ABORT. DFDR READOUT SHOWED THAT THERE WAS A SMALL DROP IN AIRSPEED (1.92 KNOTS) AT 128.63 KNOTS, HOWEVER, THE AIRSPEED SUBSEQUENTLY CLIMBED TO 137.8 KNOTS. COMPUTED V1/VR WAS 132 KTS, V2 WAS 137 KTS. THE FLT CREW STATED THAT THE AIRCRAFT DID NOT ROTATE, HOWEVER WITNESSES (INCLUDING A TOWER CONTROLLER) REPORTED THAT THE AIRCRAFT DID ROTATE PRIOR TO THE ABORT. AN EXAMINATION OF THE AIRCRAFT SYSTEMS FAILED TO EXPLAIN THE REPORTED DECELERATION.
Flight
Event TypeIncident
Event Time15:05 EDT
Nearest AirportDouglas Int. (1nm SSE)
Runway18
Runway Length7845 ft
Runway Width150 ft
Flight Plan FiledIFR
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftFokker F.28 MK4000 F.28 MK400
Tail NumberN495US
Aircraft CategoryAir
OperatorUsair
Operating RulePart 121
Engines2
Engine TypeTurbojet
Engine DetailsRolls-Royce · RB183555-15P · Turbojet · 9900
Seats70
People & Injuries
Injury SummaryNo injuries (60 uninjured)
Fatal0
Serious0
Minor0
Uninjured60
Total60
Crew 1Age 37 · First Class
Conditions
ConditionsVMC
LightDaylight
Wind120° @ 7 kt
Visibility6 sm
CeilingNone
Temperature / Dew Point54
Altimeter30.00 inHg
Observation Time19:54
Weather SourceWFAC