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EMB120 aborts takeoff at 85 KTS when PNF, the captain, discovers his airspeed indicator is inoperative.
| Attributes | |
| ACN | 364830 |
| Time | |
| Date | 199703 |
| Day | Mon |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : mco |
| State Reference | FL |
| Altitude | agl bound lower : 0 agl bound upper : 0 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tower : lga |
| Operator | common carrier : air carrier |
| Make Model Name | Brasilia EMB-120 All Series |
| Operating Under FAR Part | Part 121 |
| Flight Phase | climbout : takeoff other |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : commercial pilot : cfi pilot : instrument |
| Experience | flight time last 90 days : 150 flight time total : 1900 flight time type : 150 |
| ASRS Report | 364830 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Events | |
| Anomaly | aircraft equipment problem : less severe |
| Independent Detector | other flight crewa |
| Resolutory Action | flight crew : rejected takeoff |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Aircraft |
| Air Traffic Incident | other |
Narrative:
On the takeoff roll, standard call is for a xchk of the airspeed, at 80 KTS. After requesting captain to 'set torques 95%.' I noticed it seemed to take longer than normal for that call. I glanced at my indicator and saw it passing 85 KTS. About that time, captain said, 'my airspeed is not indicating anything. Abort your takeoff.' I immediately reduced power levers to ground idle and brought the plane to a stop. Returned to gate, deplaned, picked up the spare aircraft and continued the trip uneventfully. Flying in florida, it is likely bug(south) got lodged deep in the pitot tube during the night or repositioning of aircraft from hangar to gate. Pitot covers may or may not have helped.
Original NASA ASRS Text
Title: EMB120 ABORTS TKOF AT 85 KTS WHEN PNF, THE CAPT, DISCOVERS HIS AIRSPD INDICATOR IS INOP.
Narrative: ON THE TKOF ROLL, STANDARD CALL IS FOR A XCHK OF THE AIRSPD, AT 80 KTS. AFTER REQUESTING CAPT TO 'SET TORQUES 95%.' I NOTICED IT SEEMED TO TAKE LONGER THAN NORMAL FOR THAT CALL. I GLANCED AT MY INDICATOR AND SAW IT PASSING 85 KTS. ABOUT THAT TIME, CAPT SAID, 'MY AIRSPD IS NOT INDICATING ANYTHING. ABORT YOUR TKOF.' I IMMEDIATELY REDUCED PWR LEVERS TO GND IDLE AND BROUGHT THE PLANE TO A STOP. RETURNED TO GATE, DEPLANED, PICKED UP THE SPARE ACFT AND CONTINUED THE TRIP UNEVENTFULLY. FLYING IN FLORIDA, IT IS LIKELY BUG(S) GOT LODGED DEEP IN THE PITOT TUBE DURING THE NIGHT OR REPOSITIONING OF ACFT FROM HANGAR TO GATE. PITOT COVERS MAY OR MAY NOT HAVE HELPED.
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.