Narrative:

Cleared for takeoff from 7R; after tower said turn right to heading 130 change to 126.8 freq.; I checked in on 126.8 ; 'aircraft X; 2;500 climbing to 4;500 with a final of 6;500.' departure 'radar contact climb and maintain 5;500.' I read back 5;500. A minute later call traffic 1 o'clock; less than a mile; I looked up [and] saw a high winged single engine aircraft about 500 above me with a path that would cross right above me; told controller I got the traffic. Controller said clear to climb in relation to that traffic; he [was] not talking to him. Contact 123.7: I told the controller I was going to level out to avoid that traffic. I push the nose of aircraft over stop climb [and] the traffic disappeared behind my wing. He went over top of me about 300 feet. I try to contact 123.7 a total of 4 times before the controller answer back with 'aircraft X turn no further right then 220 climb and maintain 6;000 feet.' I read-back clearance; later the controlled asked if I was climbing thru 4;700. Roger...an aircraft came on the radio to ask if [my aircraft] was talking to 123.7 or 126.8 because aircraft Y was awful close to him in passing. The controller stated no traffic problem. The pilot wanted more information. I called and told the pilot to contact me on [frequency X]. He came up on frequency wanted to know if I was talking to what frequency when I went in under him; to avoid him. Told him 126.8 and changing frequency to 123.7 but was too busy avoiding him to look at the frequency change; after that I got in contact with the controller on 123.7. The controller cleared me to right turn 220 an climb to 6;000 feet. After aircraft Y descended the controller called me and asked if I would explained what had happened. I called back and said do you want to say on this frequency what happened; the controller responded; no. I told the controller to call my company if they have any questions.about 6 month ago phx ATC changed operation in phx. They added an addition frequency 126.8 after takeoff we are to change to new frequency 126.8; I would check in with TRACON climbing 2;500 for 4;500 and would like 6;500 for final altitude. The controller would radar contact climb and maintain 5;000 contact 123.7. 123.7 would say climb and maintain 6;000 and be the controlling frequency until out of phx airspace. Question; why add an addition frequency when we used to go directly to 123.7 the problem would have been eliminated by direct to 123.7.

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Original NASA ASRS Text

Title: A pilot departed PHX and had a near miss with a light aircraft on a different frequency even though both were communicating with the TRACON. The addition of 126.8 in the PHX area has caused some confusion.

Narrative: Cleared for takeoff from 7R; after tower said turn right to heading 130 change to 126.8 freq.; I checked in on 126.8 ; 'Aircraft X; 2;500 climbing to 4;500 with a final of 6;500.' Departure 'radar contact climb and maintain 5;500.' I read back 5;500. A minute later call traffic 1 o'clock; less than a mile; I looked up [and] saw a high winged single engine aircraft about 500 above me with a path that would cross right above me; told controller I got the traffic. Controller said clear to climb in relation to that traffic; he [was] not talking to him. Contact 123.7: I told the controller I was going to level out to avoid that traffic. I push the nose of aircraft over stop climb [and] the traffic disappeared behind my wing. He went over top of me about 300 feet. I try to contact 123.7 a total of 4 times before the controller answer back with 'Aircraft X turn no further right then 220 climb and maintain 6;000 feet.' I read-back clearance; later the Controlled asked if I was climbing thru 4;700. Roger...an aircraft came on the radio to ask if [my aircraft] was talking to 123.7 or 126.8 because Aircraft Y was awful close to him in passing. The Controller stated no traffic problem. The pilot wanted more information. I called and told the pilot to contact me on [frequency X]. He came up on frequency wanted to know if I was talking to what frequency when I went in under him; to avoid him. Told him 126.8 and changing frequency to 123.7 but was too busy avoiding him to look at the frequency change; after that I got in contact with the controller on 123.7. The Controller cleared me to right turn 220 an climb to 6;000 feet. After Aircraft Y descended the Controller called me and asked if I would explained what had happened. I called back and said do you want to say on this frequency what happened; the Controller responded; no. I told the Controller to call my Company if they have any questions.About 6 month ago PHX ATC changed operation in PHX. They added an addition frequency 126.8 after takeoff we are to change to new frequency 126.8; I would check in with TRACON climbing 2;500 for 4;500 and would like 6;500 for final altitude. The controller would radar contact climb and maintain 5;000 contact 123.7. 123.7 would say climb and maintain 6;000 and be the controlling frequency until out of PHX airspace. Question; why add an addition frequency when we used to go directly to 123.7 the problem would have been eliminated by direct to 123.7.

Data retrieved from NASA's ASRS site 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.