Narrative:

Small aircraft X departed deer valley airport northwest. I saw an unknown small aircraft Y enter the class D airspace at 3500 MSL north of deer valley and turn west 3 mi north of dvt. I issued traffic to small aircraft X 4 or 5 times without a reply back. Apparently small aircraft X lost radio communication and the wbound target Y was not on my frequency. After my last transmission of a TA to small aircraft X without no reply, I watched as both small aircraft's made maneuvers to avoid each other. Small aircraft X then called tower and had a bad scratchy radio. I issued traffic again. He said he had the small aircraft Y in sight and advised his radio had gone out. I tracked the intruder small aircraft Y to glendale airport on our d-brite and was advised that small aircraft Y was the intruder. I relayed all the above information to my supervisor. Both pilots called deer valley later. My supervisor refused to talk to either pilot making myself talk to the pilots. I again relayed the new information I received from both pilots to my supervisor. He has taken no action at all on this situation. Both pilots had bad radios and need to brush up on lost communications while in-flight. Small aircraft X said he was having his plane's radio fixed. Also, the above pilots need to pay more attention to scanning for other planes than trying to make in-flight repairs to their radios. If this was done, the above would never have occurred.

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Original NASA ASRS Text

Title: 2 SMA'S WITH RADIO PROBS HAVE NMAC IN THE ATA AS CTLR ATTEMPTS TO MAKE RADIO CONTACT.

Narrative: SMA X DEPARTED DEER VALLEY ARPT NW. I SAW AN UNKNOWN SMA Y ENTER THE CLASS D AIRSPACE AT 3500 MSL N OF DEER VALLEY AND TURN W 3 MI N OF DVT. I ISSUED TFC TO SMA X 4 OR 5 TIMES WITHOUT A REPLY BACK. APPARENTLY SMA X LOST RADIO COM AND THE WBOUND TARGET Y WAS NOT ON MY FREQ. AFTER MY LAST XMISSION OF A TA TO SMA X WITHOUT NO REPLY, I WATCHED AS BOTH SMA'S MADE MANEUVERS TO AVOID EACH OTHER. SMA X THEN CALLED TWR AND HAD A BAD SCRATCHY RADIO. I ISSUED TFC AGAIN. HE SAID HE HAD THE SMA Y IN SIGHT AND ADVISED HIS RADIO HAD GONE OUT. I TRACKED THE INTRUDER SMA Y TO GLENDALE ARPT ON OUR D-BRITE AND WAS ADVISED THAT SMA Y WAS THE INTRUDER. I RELAYED ALL THE ABOVE INFO TO MY SUPVR. BOTH PLTS CALLED DEER VALLEY LATER. MY SUPVR REFUSED TO TALK TO EITHER PLT MAKING MYSELF TALK TO THE PLTS. I AGAIN RELAYED THE NEW INFO I RECEIVED FROM BOTH PLTS TO MY SUPVR. HE HAS TAKEN NO ACTION AT ALL ON THIS SIT. BOTH PLTS HAD BAD RADIOS AND NEED TO BRUSH UP ON LOST COMS WHILE INFLT. SMA X SAID HE WAS HAVING HIS PLANE'S RADIO FIXED. ALSO, THE ABOVE PLTS NEED TO PAY MORE ATTN TO SCANNING FOR OTHER PLANES THAN TRYING TO MAKE INFLT REPAIRS TO THEIR RADIOS. IF THIS WAS DONE, THE ABOVE WOULD NEVER HAVE OCCURRED.

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.