|37000 Feet||Browse and search NASA's
Aviation Safety Reporting System
|Locale Reference||airport : opl.airport|
|Altitude||msl single value : 900|
|Controlling Facilities||tower : lax.tower|
|Make Model Name||Small Transport|
2 Turboprop Eng
|Flight Phase||climbout : initial|
|Operator||general aviation : instructional|
|Make Model Name||Small Aircraft|
|Flight Phase||descent : approach|
|Qualification||pilot : atp|
|Experience||flight time last 90 days : 85|
flight time total : 5025
flight time type : 350
|Function||flight crew : single pilot|
|Anomaly||conflict : nmac|
non adherence : published procedure
|Independent Detector||other flight crewa|
|Resolutory Action||none taken : detected after the fact|
|Miss Distance||horizontal : 2|
vertical : 400
|Problem Areas||Flight Crew Human Performance|
|Primary Problem||Flight Crew Human Performance|
Departed VFR from opl runway 36 while the other small transport aircraft was on an upwind from runway 6. I made all appropriate radio calls and then on my climb out the other small transport aircraft asked my intentions; so I restated departure to the north. The other small transport had turned a left crosswind and then stated they were going to execute a turn back to the right to avoid me. At the same time I stated I was turning due west and remained at approximately 900 ft indicated. The radio calls seemed as if they partially blocked one another. I then contacted approach on my #1 radio and heard the other small transport talking to another aircraft in the pattern stating they never heard any calls from me. I called back to the piper and stated I had been making xmissions. They responded that was the first time they heard me. Apparently I wasn't transmitting on the #2 radio but actually on the #1 radio. A way to alleviate this scenario from happening again I will no longer transmit on the #2 radio; but instead remain on the #1 and just toggle between the #1 radio.
Original NASA ASRS Text
Title: AN SMT AND ANOTHER SMT HAD AN NMAC AFTER DEPARTING OPL WHEN THE SMT PLT HEARD CALLS ON THE CTAF FREQ BUT TRANSMITTED RESPONSES ON ANOTHER RADIO FREQ.
Narrative: DEPARTED VFR FROM OPL RWY 36 WHILE THE OTHER SMT ACFT WAS ON AN UPWIND FROM RWY 6. I MADE ALL APPROPRIATE RADIO CALLS AND THEN ON MY CLBOUT THE OTHER SMT ACFT ASKED MY INTENTIONS; SO I RESTATED DEP TO THE N. THE OTHER SMT HAD TURNED A L XWIND AND THEN STATED THEY WERE GOING TO EXECUTE A TURN BACK TO THE R TO AVOID ME. AT THE SAME TIME I STATED I WAS TURNING DUE W AND REMAINED AT APPROX 900 FT INDICATED. THE RADIO CALLS SEEMED AS IF THEY PARTIALLY BLOCKED ONE ANOTHER. I THEN CONTACTED APCH ON MY #1 RADIO AND HEARD THE OTHER SMT TALKING TO ANOTHER ACFT IN THE PATTERN STATING THEY NEVER HEARD ANY CALLS FROM ME. I CALLED BACK TO THE PIPER AND STATED I HAD BEEN MAKING XMISSIONS. THEY RESPONDED THAT WAS THE FIRST TIME THEY HEARD ME. APPARENTLY I WASN'T XMITTING ON THE #2 RADIO BUT ACTUALLY ON THE #1 RADIO. A WAY TO ALLEVIATE THIS SCENARIO FROM HAPPENING AGAIN I WILL NO LONGER XMIT ON THE #2 RADIO; BUT INSTEAD REMAIN ON THE #1 AND JUST TOGGLE BTWN THE #1 RADIO.
Data retrieved from NASA's ASRS site as of May 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.