|37000 Feet||Browse and search NASA's
Aviation Safety Reporting System
|Local Time Of Day||0601 To 1200|
|Locale Reference||airport : esp|
|Altitude||agl bound lower : 300|
agl bound upper : 300
|Operator||general aviation : personal|
|Make Model Name||Small Aircraft, High Wing, 1 Eng, Fixed Gear|
|Flight Phase||climbout : initial|
|Function||flight crew : single pilot|
|Qualification||pilot : atp|
|Experience||flight time last 90 days : 93|
flight time total : 15000
flight time type : 112
|Anomaly||inflight encounter : weather|
other spatial deviation
other anomaly other
|Independent Detector||other flight crewa|
|Resolutory Action||flight crew : regained aircraft control|
|Air Traffic Incident||other|
I encountered a dangerous condition when I took off on runway 31 with the wind out of the northwest, after speaking with a pilot who was familiar with the airport and also observing the airport manager takeoff on a sightseeing flight carrying two passengers. There is rising terrain off the northwest end of the airport and when the wind is out of the northwest, unpredictable windshears and down drafts often occur. Afterwards I learned of this frequent occurrence, there have been a number of incidents involving this dangerous condition. Pilots should be warned that this condition often exists so that they can take it into consideration in deciding when it is safe to use that runway.
Original NASA ASRS Text
Title: GA SMA ENCOUNTERED WIND SHEAR DOWNDRAFT ON INITIAL CLIMB AFTER TKOF.
Narrative: I ENCOUNTERED A DANGEROUS CONDITION WHEN I TOOK OFF ON RWY 31 WITH THE WIND OUT OF THE NW, AFTER SPEAKING WITH A PLT WHO WAS FAMILIAR WITH THE ARPT AND ALSO OBSERVING THE ARPT MGR TKOF ON A SIGHTSEEING FLT CARRYING TWO PASSENGERS. THERE IS RISING TERRAIN OFF THE NW END OF THE ARPT AND WHEN THE WIND IS OUT OF THE NW, UNPREDICTABLE WINDSHEARS AND DOWN DRAFTS OFTEN OCCUR. AFTERWARDS I LEARNED OF THIS FREQUENT OCCURRENCE, THERE HAVE BEEN A NUMBER OF INCIDENTS INVOLVING THIS DANGEROUS CONDITION. PLTS SHOULD BE WARNED THAT THIS CONDITION OFTEN EXISTS SO THAT THEY CAN TAKE IT INTO CONSIDERATION IN DECIDING WHEN IT IS SAFE TO USE THAT RWY.
Data retrieved from NASA's ASRS site as of August 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.