Narrative:

I took off on runway 7R. I needed a left turn northwest bound. I was told climb straight out until dvt and begin left turn; contact/monitor north tower frequency 120.2 after turn. Shortly after beginning my left turn (maybe a mile off the runway) and while climbing; a bonanza came from my left rear and just slightly below and crossed under/in front missing by maybe 40 ft. I was maybe doing 100 KTS as I was climbing. The bonanza was a good 50+ KTS faster. I was under control of dvt tower and received no traffic advisories or warnings. There was no way I could have seen the bonanza behind and slightly left and was of course not looking behind the aircraft on a climb within dvt airspace. This is not the first incident. I believe dvt is an accident waiting to happen. The system and whatever that entails is not adequate at this time to handle the traffic load at dvt. I do believe the controllers are doing the best they can and are severely overworked. But; I believe dvt is currently an accident waiting to happen. I only hope it doesn't take a mid-air with fatalities to bring light to the severely deteriorated conditions at dvt.

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Original NASA ASRS Text

Title: PIPER PA-24 PLT HAS NMAC AT 3800 FT DEPARTING FROM DVT CITING CONGESTION AND CTLR WORKLOAD AS CONTRIBUTORY.

Narrative: I TOOK OFF ON RWY 7R. I NEEDED A LEFT TURN NW BOUND. I WAS TOLD CLB STRAIGHT OUT UNTIL DVT AND BEGIN LEFT TURN; CONTACT/MONITOR NORTH TWR FREQ 120.2 AFTER TURN. SHORTLY AFTER BEGINNING MY LEFT TURN (MAYBE A MILE OFF THE RWY) AND WHILE CLBING; A BONANZA CAME FROM MY LEFT REAR AND JUST SLIGHTLY BELOW AND CROSSED UNDER/IN FRONT MISSING BY MAYBE 40 FT. I WAS MAYBE DOING 100 KTS AS I WAS CLBING. THE BONANZA WAS A GOOD 50+ KTS FASTER. I WAS UNDER CONTROL OF DVT TWR AND RECEIVED NO TFC ADVISORIES OR WARNINGS. THERE WAS NO WAY I COULD HAVE SEEN THE BONANZA BEHIND AND SLIGHTLY LEFT AND WAS OF COURSE NOT LOOKING BEHIND THE ACFT ON A CLB WITHIN DVT AIRSPACE. THIS IS NOT THE FIRST INCIDENT. I BELIEVE DVT IS AN ACCIDENT WAITING TO HAPPEN. THE SYSTEM AND WHATEVER THAT ENTAILS IS NOT ADEQUATE AT THIS TIME TO HANDLE THE TRAFFIC LOAD AT DVT. I DO BELIEVE THE CTLRS ARE DOING THE BEST THEY CAN AND ARE SEVERELY OVERWORKED. BUT; I BELIEVE DVT IS CURRENTLY AN ACCIDENT WAITING TO HAPPEN. I ONLY HOPE IT DOESN'T TAKE A MID-AIR WITH FATALITIES TO BRING LIGHT TO THE SEVERELY DETERIORATED CONDITIONS AT DVT.

Data retrieved from NASA's ASRS site as of January 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.