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37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
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Attributes | |
ACN | 754639 |
Time | |
Date | 200709 |
Local Time Of Day | 1801 To 2400 |
Place | |
Locale Reference | airport : zzz.airport |
State Reference | US |
Altitude | agl single value : 0 |
Environment | |
Flight Conditions | VMC |
Light | Daylight |
Aircraft 1 | |
Make Model Name | A300 |
Operating Under FAR Part | Part 121 |
Flight Phase | ground : takeoff roll |
Flight Plan | IFR |
Person 1 | |
Affiliation | company : air carrier |
Function | flight crew : captain oversight : pic |
ASRS Report | 754639 |
Events | |
Anomaly | aircraft equipment problem : critical |
Independent Detector | aircraft equipment other aircraft equipment : ias indicator other flight crewa |
Resolutory Action | flight crew : rejected takeoff |
Consequence | other |
Supplementary | |
Problem Areas | Aircraft |
Primary Problem | Aircraft |
Narrative:
I (captain) initiated takeoff with all indications normal until 80 KT call. At that point I verified the airspeed indication on my pfd; and found it pegged at the bottom of the scale on 0 KTS airspeed. I stated 'no airspeed;' and initiated a rejected takeoff. Airspeed topped out at 90 KTS before deceleration began with maximum automatic-brakes working as advertised. Exited runway and returned to blocks. Maintenance cleaned a fairly large bug out of the captain's system pitot tube and verified the pitot; plumbing; and associated air data computer were working properly. I do not know if pitot covers were used as the aircraft sat at the gateway all day. They may have been; however; there was no logbook entry indicating covers being installed or removed.
Original NASA ASRS Text
Title: A300 REJECTS TKOF DUE TO ZERO IAS ON CAPTAIN'S ASI. BUG FOUND IN PITOT.
Narrative: I (CAPT) INITIATED TKOF WITH ALL INDICATIONS NORMAL UNTIL 80 KT CALL. AT THAT POINT I VERIFIED THE AIRSPD INDICATION ON MY PFD; AND FOUND IT PEGGED AT THE BOTTOM OF THE SCALE ON 0 KTS AIRSPD. I STATED 'NO AIRSPD;' AND INITIATED A REJECTED TKOF. AIRSPD TOPPED OUT AT 90 KTS BEFORE DECELERATION BEGAN WITH MAX AUTO-BRAKES WORKING AS ADVERTISED. EXITED RWY AND RETURNED TO BLOCKS. MAINT CLEANED A FAIRLY LARGE BUG OUT OF THE CAPT'S SYS PITOT TUBE AND VERIFIED THE PITOT; PLUMBING; AND ASSOCIATED ADC WERE WORKING PROPERLY. I DO NOT KNOW IF PITOT COVERS WERE USED AS THE ACFT SAT AT THE GATEWAY ALL DAY. THEY MAY HAVE BEEN; HOWEVER; THERE WAS NO LOGBOOK ENTRY INDICATING COVERS BEING INSTALLED OR REMOVED.
Data retrieved from NASA's ASRS site as of January 2009 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.