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Radio perception problems while preparing for takeoff at klas lead to a take off without clearance from runway 19R while another aircraft was also departing from runway 19L.
| Attributes | |
| ACN | 574584 |
| Time | |
| Date | 200302 |
| Day | Wed |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : las.airport |
| State Reference | NY |
| Altitude | agl single value : 0 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Operator | general aviation : corporate |
| Make Model Name | Learjet 31 |
| Operating Under FAR Part | Part 91 |
| Flight Phase | ground : position and hold ground : takeoff roll ground : taxi |
| Flight Plan | IFR |
| Aircraft 2 | |
| Controlling Facilities | tower : las.tower |
| Operator | common carrier : air carrier |
| Make Model Name | Commercial Fixed Wing |
| Operating Under FAR Part | Part 121 |
| Flight Phase | landing : roll |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : corporate |
| Function | flight crew : first officer |
| Qualification | pilot : multi engine pilot : instrument pilot : commercial pilot : cfi pilot : atp |
| Experience | flight time last 90 days : 25 flight time total : 3700 flight time type : 150 |
| ASRS Report | 574584 |
| Person 2 | |
| Affiliation | company : corporate |
| Function | flight crew : captain oversight : pic |
| Events | |
| Anomaly | aircraft equipment problem : less severe incursion : runway non adherence : clearance other anomaly other |
| Independent Detector | other controllerb other flight crewa |
| Resolutory Action | none taken : anomaly accepted |
| Supplementary | |
| Problem Areas | Flight Crew Human Performance ATC Facility Aircraft |
| Primary Problem | Aircraft |
| Air Traffic Incident | Pilot Deviation |
Narrative:
I was the first officer holding short of runway 19R at klas airport in nevada. The tower contacted us and advised that if we were ready for immediate takeoff, we could taxi across runway 19R and take off on runway 19L. I replied to the tower that we were ready for immediate takeoff, and there was no reply from the tower. Again, I replied that we were ready for takeoff, and again , no reply from the tower. We held short of runway 19R. Other aircraft replied that they could hear our xmissions. Xmissions from the tower were at times garbled and unreadable. The #2 radio antenna is on the top of the aircraft, thinking that might help the quality of xmissions between us and the tower, I switched to the #2 radio. After switching radios, I hear that 'aircraft X taxi into position and hold on runway 19R, then followed 'cleared for takeoff,' I replied 'aircraft X cleared for takeoff.
Original NASA ASRS Text
Title: RADIO PERCEPTION PROBS WHILE PREPARING FOR TKOF AT KLAS LEAD TO A TAKE OFF WITHOUT CLRNC FROM RWY 19R WHILE ANOTHER ACFT WAS ALSO DEPARTING FROM RWY 19L.
Narrative: I WAS THE FO HOLDING SHORT OF RWY 19R AT KLAS ARPT IN NEVADA. THE TWR CONTACTED US AND ADVISED THAT IF WE WERE READY FOR IMMEDIATE TKOF, WE COULD TAXI ACROSS RWY 19R AND TAKE OFF ON RWY 19L. I REPLIED TO THE TWR THAT WE WERE READY FOR IMMEDIATE TKOF, AND THERE WAS NO REPLY FROM THE TWR. AGAIN, I REPLIED THAT WE WERE READY FOR TKOF, AND AGAIN , NO REPLY FROM THE TWR. WE HELD SHORT OF RWY 19R. OTHER ACFT REPLIED THAT THEY COULD HEAR OUR XMISSIONS. XMISSIONS FROM THE TWR WERE AT TIMES GARBLED AND UNREADABLE. THE #2 RADIO ANTENNA IS ON THE TOP OF THE ACFT, THINKING THAT MIGHT HELP THE QUALITY OF XMISSIONS BTWN US AND THE TWR, I SWITCHED TO THE #2 RADIO. AFTER SWITCHING RADIOS, I HEAR THAT 'ACFT X TAXI INTO POS AND HOLD ON RWY 19R, THEN FOLLOWED 'CLRED FOR TKOF,' I REPLIED 'ACFT X CLRED FOR TKOF.
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.