Crew of biz jet, on approach to non tower airport, mistune radio and fail to caall on CTAF.

Attributes
ACN	131371
Time
Date	198912
Day	Fri
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : mtj
State Reference	CO
Altitude	msl bound lower : 6500 msl bound upper : 6500
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zdv tower : san
Operator	general aviation : corporate
Make Model Name	Light Transport, Low Wing, 2 Turbojet Eng
Navigation In Use	Other
Flight Phase	descent : approach landing other other
Flight Plan	IFR Combined VFR
Person 1
Affiliation	Other
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 110 flight time total : 14600 flight time type : 110
ASRS Report	131371
Person 2
Affiliation	government : faa
Function	controller : radar
Qualification	controller : radar
Events
Anomaly	other spatial deviation
Independent Detector	other flight crewa
Resolutory Action	other
Consequence	Other
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

While on descent, still under the control of ZDV, I contacted montrose unicom on 122.8 on #2 radio to obtain WX, runway in use and altitude setting (first officer flying from right seat). Information was obtained--no reported traffic. I switched back to #1 radio, cancelling IFR in due time with den. The next calls: 'entering downwind, turning base to final,' intended on unicom, were all made on the center frequency, since I failed to switch from #1 to #2 radio. Due to the terrain, I received no replies from center--thus I assumed the chap on unicom was sleeping. On a 3 mi final I noted an mdt taxiing into position. After a short hesitation, I intended to make a go around; however, the air carrier taxied off the active and we made a routine landing. At no point was the safety in jeopardy, but transmitting on the wrong frequency is certainly not the shining example of descent airmanship we want to be acknowledged for.

Original NASA ASRS Text

Title: CREW OF BIZ JET, ON APCH TO NON TWR ARPT, MISTUNE RADIO AND FAIL TO CAALL ON CTAF.

Narrative: WHILE ON DSCNT, STILL UNDER THE CTL OF ZDV, I CONTACTED MONTROSE UNICOM ON 122.8 ON #2 RADIO TO OBTAIN WX, RWY IN USE AND ALT SETTING (F/O FLYING FROM RIGHT SEAT). INFO WAS OBTAINED--NO RPTED TFC. I SWITCHED BACK TO #1 RADIO, CANCELLING IFR IN DUE TIME WITH DEN. THE NEXT CALLS: 'ENTERING DOWNWIND, TURNING BASE TO FINAL,' INTENDED ON UNICOM, WERE ALL MADE ON THE CENTER FREQ, SINCE I FAILED TO SWITCH FROM #1 TO #2 RADIO. DUE TO THE TERRAIN, I RECEIVED NO REPLIES FROM CENTER--THUS I ASSUMED THE CHAP ON UNICOM WAS SLEEPING. ON A 3 MI FINAL I NOTED AN MDT TAXIING INTO POS. AFTER A SHORT HESITATION, I INTENDED TO MAKE A GAR; HOWEVER, THE ACR TAXIED OFF THE ACTIVE AND WE MADE A ROUTINE LNDG. AT NO POINT WAS THE SAFETY IN JEOPARDY, BUT XMITTING ON THE WRONG FREQ IS CERTAINLY NOT THE SHINING EXAMPLE OF DSCNT AIRMANSHIP WE WANT TO BE ACKNOWLEDGED FOR.

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.