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Flight crew of air carrier medium large transport aircraft aborted takeoff due the wrong takeoff flap setting.
| Attributes | |
| ACN | 236081 |
| Time | |
| Date | 199303 |
| Day | Wed |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : den |
| State Reference | CO |
| Altitude | agl bound lower : 0 agl bound upper : 0 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tower : mkg |
| Operator | common carrier : air carrier |
| Make Model Name | Medium Large Transport, Low Wing, 2 Turbojet Eng |
| Navigation In Use | Other Other |
| Flight Phase | climbout : takeoff |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : flight engineer pilot : cfi pilot : atp |
| Experience | flight time last 90 days : 225 flight time total : 8500 flight time type : 1000 |
| ASRS Report | 236081 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Events | |
| Anomaly | non adherence other other anomaly other |
| Independent Detector | aircraft equipment other aircraft equipment : unspecified other flight crewa |
| Resolutory Action | flight crew : rejected takeoff |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
As we started our takeoff roll in the medium large transport aircraft, the takeoff warning horn sounded. We did a quick check of the items known to cause the horn hoping to continue the takeoff. Unable to silence horn we aborted at about 60-70 KTS. After clearing runway further inquiry discovered flaps were set to position 1 degree. We had computed takeoff speeds and bugs were set for a flaps 5 degrees takeoff. In fact, our aircraft model aircraft are not currently approved for a flaps 1 degree takeoff. As the first officer of the flight, I positioned the flap lever to position 1 degree after engine start. Neither the captain nor myself caught the error during the before takeoff checklist as we should have. After the abort (very little braking) we taxied back and made a normal flaps 5 degrees takeoff followed by an uneventful flight to smf.
Original NASA ASRS Text
Title: FLC OF ACR MLG ACFT ABORTED TKOF DUE THE WRONG TKOF FLAP SETTING.
Narrative: AS WE STARTED OUR TKOF ROLL IN THE MLG ACFT, THE TKOF WARNING HORN SOUNDED. WE DID A QUICK CHK OF THE ITEMS KNOWN TO CAUSE THE HORN HOPING TO CONTINUE THE TKOF. UNABLE TO SILENCE HORN WE ABORTED AT ABOUT 60-70 KTS. AFTER CLRING RWY FURTHER INQUIRY DISCOVERED FLAPS WERE SET TO POS 1 DEG. WE HAD COMPUTED TKOF SPDS AND BUGS WERE SET FOR A FLAPS 5 DEGS TKOF. IN FACT, OUR ACFT MODEL ACFT ARE NOT CURRENTLY APPROVED FOR A FLAPS 1 DEG TKOF. AS THE FO OF THE FLT, I POSITIONED THE FLAP LEVER TO POS 1 DEG AFTER ENG START. NEITHER THE CAPT NOR MYSELF CAUGHT THE ERROR DURING THE BEFORE TKOF CHKLIST AS WE SHOULD HAVE. AFTER THE ABORT (VERY LITTLE BRAKING) WE TAXIED BACK AND MADE A NORMAL FLAPS 5 DEGS TKOF FOLLOWED BY AN UNEVENTFUL FLT TO SMF.
Data retrieved from NASA's ASRS site as of July 2007 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.