|37000 Feet||Browse and search NASA's
Aviation Safety Reporting System
|Local Time Of Day||1201 To 1800|
|Locale Reference||airport : las|
|Altitude||msl bound lower : 3500|
msl bound upper : 5000
|Controlling Facilities||tracon : las|
|Operator||common carrier : air taxi|
|Make Model Name||Small Aircraft, High Wing, 1 Eng, Retractable Gear|
|Flight Phase||cruise other|
|Route In Use||departure other|
enroute : on vectors
|Affiliation||company : air taxi|
|Function||flight crew : single pilot|
|Qualification||pilot : atp|
|Experience||flight time last 90 days : 150|
flight time total : 1200
|Affiliation||government : faa|
|Function||controller : departure|
|Qualification||controller : radar|
|Anomaly||non adherence : far|
other anomaly other
other spatial deviation
|Independent Detector||other flight crewa|
|Resolutory Action||flight crew : took evasive action|
flight crew : exited adverse environment
|Primary Problem||ATC Human Performance|
|Air Traffic Incident||Operational Error|
I was given a clearance to depart the TCA via heading 110 degree and to maintain 3500' msc. Upon contacting departure control, I was instructed to fly heading 150 degree from a point about 4 miles south of the airport. This heading took me toward hills southeast of the las VOR which are shown on the chart as rising to 4069'. The radio channel was extremely busy at the time--it was not possible for me to ask ATC for a high altitude. Although I attempted to contact them several times. Finally, when within one half mile of the terrain, I exercised my emergency authority and climbed to 4,300' to cross the ridges. I felt that this was safer than a course deviation since a northerly turn might cause a conflict with inbound traffic and a southerly turn was toward more terrain. Shortly after reaching 4300' ATC cleared by to 5000' and direct boulder city--I did not mention my predicament due to frequency congestion. I think maybe somebody needs to verify the minimum vectoring altitudes southeast of las and verify that low altitude alert features of the radar system software are functional.
Original NASA ASRS Text
Title: GA SMA ON TCA CLRNC GIVEN VECTOR INTO RISING TERRAIN. OPERROR.
Narrative: I WAS GIVEN A CLRNC TO DEPART THE TCA VIA HDG 110 DEG AND TO MAINTAIN 3500' MSC. UPON CONTACTING DEPARTURE CONTROL, I WAS INSTRUCTED TO FLY HEADING 150 DEG FROM A POINT ABOUT 4 MILES SOUTH OF THE AIRPORT. THIS HEADING TOOK ME TOWARD HILLS SE OF THE LAS VOR WHICH ARE SHOWN ON THE CHART AS RISING TO 4069'. THE RADIO CHANNEL WAS EXTREMELY BUSY AT THE TIME--IT WAS NOT POSSIBLE FOR ME TO ASK ATC FOR A HIGH ALTITUDE. ALTHOUGH I ATTEMPTED TO CONTACT THEM SEVERAL TIMES. FINALLY, WHEN WITHIN ONE HALF MILE OF THE TERRAIN, I EXERCISED MY EMER AUTHORITY AND CLIMBED TO 4,300' TO CROSS THE RIDGES. I FELT THAT THIS WAS SAFER THAN A COURSE DEVIATION SINCE A NORTHERLY TURN MIGHT CAUSE A CONFLICT WITH INBOUND TFC AND A SOUTHERLY TURN WAS TOWARD MORE TERRAIN. SHORTLY AFTER REACHING 4300' ATC CLRED BY TO 5000' AND DIRECT BOULDER CITY--I DID NOT MENTION MY PREDICAMENT DUE TO FREQUENCY CONGESTION. I THINK MAYBE SOMEBODY NEEDS TO VERIFY THE MINIMUM VECTORING ALTITUDES SE OF LAS AND VERIFY THAT LOW ALTITUDE ALERT FEATURES OF THE RADAR SYSTEM SOFTWARE ARE FUNCTIONAL.
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.