Aircraft Incident/Accident Report
Teterboro Airport

Teterboro, New Jersey 07608
Friday, August 21, 2009 3:05 EDT

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NTSB Narrative Summary Released at Completion of Accident
The airplane was operating as a corporate flight transporting medical specimens on a night, visual approach in visual meteorological conditions when the accident occurred. The flight was scheduled to be a single-pilot operation conducted under the provisions of 14 Code of Federal Regulations Part 91, and the pilot-in-command (PIC) had been assigned to the flight. Although the second-in-command (SIC), also a Quest Diagnostics pilot, was not assigned to the flight, he asked the PIC if he could accompany him on the flight to gain familiarization with operations into Teterboro Airport. Typically, the PIC flies the airplane from the left seat; however, the PIC on this flight allowed the SIC to occupy the left seat and fly the airplane. The investigation could not determine if the pilots had coordinated responsibilities for the flight before departure or if the PIC was providing additional training to the SIC during the flight. Radar data indicated that, while on the base leg of the traffic pattern, the airplane had an airspeed of about 204 knots, which exceeded the maximum flap extension speed by more than 50 knots and the maximum landing gear extension speed by more than 80 knots. According to the SIC, during this critical portion of the approach to landing, the nonflying PIC remained focused on providing familiarization of the airport and city environment to the SIC, who was flying the airplane, and the PIC failed to monitor the airplane’s airspeed. After the SIC recognized the airplane’s excessive approach speed close to the runway environment, he attempted to slow the airplane. However, he inadvertently retarded the propeller levers and feathered the propellers instead of retarding the throttle levers. Recognizing the resultant loss of thrust, the PIC challenged the SIC’s actions and stated that both engines had experienced power loss. The airplane’s unfeathering accumulators had been removed; therefore, it was not possible for either pilot to quickly unfeather the propellers and reestablish engine power. Approaching the runway centerline at both low altitude and high airspeed and with the propellers feathered, the pilots were unable to slow the airplane and descend before overflying the runway. The airplane crossed the runway threshold at 300 feet and 186 knots (90 knots more than the approach speed of 96 knots), departed airport property, struck objects, and burst into flames. Chairman Hersman and Member Rosekind did not approve this brief. Chairman Hersman filed a dissenting statement, which Member Rosekind joined. Member Rosekind filed a dissenting statement, which Chairman Hersman joined. Member Sumwalt filed a concurring statement, which Vice Chairman Hart and Member Weener joined. The statements can be found in the public docket for this accident.
NTSB Probable Cause Narrative
The complete loss of thrust due to the second-in-command’s (SIC) inadvertent feathering of both propellers during a high-speed, low-altitude approach. Contributing to the accident was the pilot-in-command’s inadequate monitoring of the SIC’s performance. Chairman Hersman and Member Rosekind did not approve this probable cause. Chairman Hersman filed a dissenting statement, which Member Rosekind joined. Member Rosekind filed a dissenting statement, which Chairman Hersman joined. Member Sumwalt filed a concurring statement, which Vice Chairman Hart and Member Weener joined. The statements can be found in the public docket for this accident.
Event Information
Type of EventAccident 
Event Date8/21/2009 
Event Day of the WeekFriday 
Time of Event305 
Event Time ZoneEastern Daylight Time 
Event CityTeterboro 
Event StateNEW JERSEY 
Event Country-- 
Zipcode of the event site07608 
Event Date Year2009 
Event Date Month
MidAir Collision IndicatorNo 
On Ground Collision occurred ?No 
Event Location Latitude405100N 
Event Location Longitude0740323W 
Event Location AirportTeterboro Airport 
Event Location Nearest Airport IDTEB 
Indicates whether the acc/inc occurred off or on an airportOn Airport 
Distance from airport in statute miles
Degrees magnetic from airport-- 
Airport Elevation
Weather Briefing Completeness-- 
Investigator's weather sourceWeather Observation Facility 
Time of the weather observation330 Eastern Daylight Time 
Direction of event from weather observation facility (degrees)-- 
Weather Observation Facility IDTEB 
Elevation of weather observation facility
Distance of event from weather observation facility (units?)
Time Zone of the weather observationEDT 
Lighting ConditionsNight 
Lowest Ceiling Height-- 
Lowest Non-Ceiling Height-- 
Sky/Lowest/Cloud ConditionsClear 
Sky Condition for Lowest CeilingNone 
Visibility Runway Visual Range (Feet)-- 
Visibility Runway Visual Value (Statute Miles)-- 
Visibility (Statute Miles) 10 
Air Temperature at event time (in degrees celsius)27 
Dew Point at event time (in degress fahrenheit)23 
Wind Direction (degrees magnetic)170 
Variable Wind IndicatorWind direction could be determined 
Wind Speed (knots)
Wind Velocity Indicator -- 
Wind Gust IndicatorNot Gusting 
Wind Gust (knots) -- 
Altimeter Setting at event time (in. Hg) 29.88 
Density Altitude (feet)-- 
Intensity of Precipitation-- 
METAR weather report -- 
Event Highest InjuryFatal 
On Ground, Fatal Injuries-- 
On Ground, Minor Injuries-- 
On Ground, Serious Injuries-- 
Injury Total Fatal
Injury Total Minor-- 
Injury Total None-- 
Injury Total Serious
Injury Total All
Investigating AgencyNTSB 
NTSB Docket Number (internal use)28457 
NTSB Notification SourceNTSB Comm Center  
NTSB Notification Date-- 
NTSB Notification Time-- 
Fiche Number and/or location -used to find docket information-- 
Date of most recent change to recordOct 7 2011 4:21PM 
User who most recently changed recordrows 
Basic weather conditionsVisual Meteorological Cond 
FAA District Office-- 
Aircraft Involved
Aircraft #1
Aircraft Registration NumberN167TB 
NTSB NumberERA09LA469 
Missing Aircraft Indicator-- 
Federal Aviation Reg. PartPart 91: General Aviation 
Type of Flight Plan filedCompany VFR 
Flight plan Was Activated?Yes 
DamageSubstantial 
Aircraft FireGround 
Aircraft ExplosionNone 
Aircraft Manufacturer's Full NameRAYTHEON AIRCRAFT COMPANY 
Aircraft Model58 
Aircraft Series Identifier-- 
Aircraft Serial NumberTH-1905 
Certified Max Gross Weight5400 
Aircraft CategoryAirplane 
Aircraft Registration Class-- 
Aircraft is a homebuilt?No 
Flight Crew Seats
Cabin Crew Seats-- 
Passenger Seats-- 
Total number of seats on the aircraft
Number of Engines
Fixed gear or retractable gearRetractable 
Aircraft, Type of Last InspectionAnnual 
Date of Last InspectionMay 27 2009 12:00AM 
Airframe hours since last inspection67 
Airframe Hours3497 
ELT InstalledYes 
ELT ActivatedNo 
ELT Aided Location of Event SiteNo 
ELT TypeUnknown 
Aircraft Owner NameQUEST DIAGNOSTICS INC 
Aircraft Owner Street Address-- 
Aircraft Owner CityREADING 
Aircraft Owner StatePA 
Aircraft Owner CountryUSA  
Aircraft Owner Zipcode19605 
Operator is an individual?No 
Operator NameQUEST DIAGNOSTICS INC 
Operator Same as Owner?Yes 
Operator Is Doing Business As-- 
Operator Address Same as Owner?Yes 
Operator Street Address-- 
Operator CityREADING 
Operator StatePA 
Operator CountryUSA  
Operator Zip code19605 
Operator Code-- 
Owner has at least one certificateNone 
Other Operator of large aircraft?No 
Certified for Part 133 or 137 Operation-- 
Operator Certificate Number-- 
Indicates whether an air carrier operation was scheduled or not-- 
Indicates Domestic or International Flight-- 
Operator carrying Pax/Cargo/Mail-- 
Type of Flying (Per_Bus / Primary)Business 
Second Pilot on BoardYes 
Departure Point Same as EventNo 
Departure Airport CodePTW  
Departure CityPottstown 
Departure StatePA 
Departure CountryUSA 
Departure Time252 
Departure Time ZoneEDT 
Destination Same as Local Fltcrash at destination city 
Destination Airport CodeTEB  
Destination CityTeterboro 
Destination StateNJ 
Destination CountryUSA 
Specific Phase of Flight-- 
Report sent to ICAO?-- 
Evacuation occurred-- 
Date of most recent change to recordJul 18 2011 10:42AM 
User who most recently changed recordbroda 
Since inspection or accidentTime of Accident 
Event Location Runway Number and Location01 
Runway Length7000 
Runway Width150 
Sight Seeing flightNo 
Air Medical FlightNo 
Medical Flight--