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|
Attributes | |
ACN | 177552 |
Time | |
Date | 199105 |
Day | Mon |
Local Time Of Day | 1201 To 1800 |
Place | |
Locale Reference | airport : bur |
State Reference | CA |
Altitude | agl bound lower : 0 agl bound upper : 0 |
Environment | |
Flight Conditions | VMC |
Light | Daylight |
Aircraft 1 | |
Operator | common carrier : air carrier |
Make Model Name | Medium Large Transport, Low Wing, 2 Turbojet Eng |
Navigation In Use | Other Other |
Flight Phase | ground other : taxi |
Flight Plan | IFR |
Person 1 | |
Affiliation | company : air carrier |
Function | flight crew : captain oversight : pic |
Qualification | pilot : cfi pilot : atp pilot : instrument pilot : flight engineer |
Experience | flight time last 90 days : 230 flight time total : 14000 |
ASRS Report | 177552 |
Person 2 | |
Affiliation | company : air carrier |
Function | flight crew : first officer |
Qualification | pilot : instrument pilot : commercial |
Events | |
Anomaly | other anomaly other |
Independent Detector | other flight crewa |
Resolutory Action | none taken : detected after the fact |
Consequence | other |
Supplementary | |
Primary Problem | Airport |
Air Traffic Incident | other |
Situations | |
Airport | other physical facility |
Narrative:
On taxi-out at bur, while taxiing onto runway 26, the right wing tip scraped the blast fence at the approach end of runway 26. The aircraft, an air carrier medium large transport, was right at the maximum allowable takeoff weight for the runway (110.0X, temperature 90 degrees F, winds 310/11). Since we needed all the runway for takeoff, I taxied onto the runway perpendicular to the centerline, with the right main gear at the threshold of the runway with the intention of making a 90 degree turn at the centerline, so as to have the maximum runway available. Just prior to reaching the centerline, the right wing tip contacted the blast fence slightly damaging the wing tip. As I turned perpendicular to the runway prior to entering it, it appeared as though there was sufficient clearance for the wing. Obviously not! I believe this is perhaps somewhat of an optical illusion since the blast fence is not at right angles to the runway, but slightly canted, giving the illusion of additional space, but not at so much of an angel to be apparent that is not perpendicular. 1 additional factor is the absence of any guidance lines for taxi near the end of the runway. The only taxi line is a non-standard dashed line that stops prior to the end of the runway by several hundred ft. The runway threshold lights are recessed so it appears that the intention is to have aircraft taxi at the threshold, but in this case there is insufficient space to do so. I feel that notes on the airport diagram page pertaining to the blast fence angel and guidance lines to the runway would certainly be beneficial and would have prevented the above described incident.
Original NASA ASRS Text
Title: ACR MLG HITS BLAST FENCE WITH WING TIP AT BUR.
Narrative: ON TAXI-OUT AT BUR, WHILE TAXIING ONTO RWY 26, THE RIGHT WING TIP SCRAPED THE BLAST FENCE AT THE APCH END OF RWY 26. THE ACFT, AN ACR MLG, WAS RIGHT AT THE MAX ALLOWABLE TKOF WT FOR THE RWY (110.0X, TEMP 90 DEGS F, WINDS 310/11). SINCE WE NEEDED ALL THE RWY FOR TKOF, I TAXIED ONTO THE RWY PERPENDICULAR TO THE CENTERLINE, WITH THE RIGHT MAIN GEAR AT THE THRESHOLD OF THE RWY WITH THE INTENTION OF MAKING A 90 DEGREE TURN AT THE CENTERLINE, SO AS TO HAVE THE MAX RWY AVAILABLE. JUST PRIOR TO REACHING THE CENTERLINE, THE RIGHT WING TIP CONTACTED THE BLAST FENCE SLIGHTLY DAMAGING THE WING TIP. AS I TURNED PERPENDICULAR TO THE RWY PRIOR TO ENTERING IT, IT APPEARED AS THOUGH THERE WAS SUFFICIENT CLRNC FOR THE WING. OBVIOUSLY NOT! I BELIEVE THIS IS PERHAPS SOMEWHAT OF AN OPTICAL ILLUSION SINCE THE BLAST FENCE IS NOT AT RIGHT ANGLES TO THE RWY, BUT SLIGHTLY CANTED, GIVING THE ILLUSION OF ADDITIONAL SPACE, BUT NOT AT SO MUCH OF AN ANGEL TO BE APPARENT THAT IS NOT PERPENDICULAR. 1 ADDITIONAL FACTOR IS THE ABSENCE OF ANY GUIDANCE LINES FOR TAXI NEAR THE END OF THE RWY. THE ONLY TAXI LINE IS A NON-STANDARD DASHED LINE THAT STOPS PRIOR TO THE END OF THE RWY BY SEVERAL HUNDRED FT. THE RWY THRESHOLD LIGHTS ARE RECESSED SO IT APPEARS THAT THE INTENTION IS TO HAVE ACFT TAXI AT THE THRESHOLD, BUT IN THIS CASE THERE IS INSUFFICIENT SPACE TO DO SO. I FEEL THAT NOTES ON THE ARPT DIAGRAM PAGE PERTAINING TO THE BLAST FENCE ANGEL AND GUIDANCE LINES TO THE RWY WOULD CERTAINLY BE BENEFICIAL AND WOULD HAVE PREVENTED THE ABOVE DESCRIBED INCIDENT.
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.