Narrative:

I had departed vny on helicopter frequency from the northwest corner and had requested a helicopter west departure with a climb to 2700' when possible. ATC had given me clearance for the departure and climb. I climbed approximately 2 mi west of the vny airport and turned eastbound to the area over the tower. I flew slowly northbound along balboa blvd on the west side of the airport at 2700' MSL. At the northwest corner of the airport I requested frequency change to the bur approach. I called bur approach and idented myself as small aircraft. Bur approach advised me to stand by. Approximately 30 seconds later I observed a light twin engine aircraft at my 9:30-10 O'clock position in an eastbound direction at my altitude (2700' MSL). I lowered collective pitch and descended to 2600' as the twin small transport passed over me. I turned back to the south and returned to vny tower helicopter frequency and landed. Vny is at an altitude of 800' MSL in the center of the san fernando valley, north of los angeles. 6 mi to the east of vny is bur. Bur ILS approach and VOR approach cut through the top of vny's air traffic area. I believe the small transport was on a VOR approach to bur at the time of the incident. I was working within the vny air traffic area which brought my operation and that of the small transport within close proximity. In my opinion the present apches at bur airport are too close to the operations at vny. The present arsa at bur is a step in the right direction for communications. The controllers at bur and vny and TRACON are as good as I find anywhere. The physical proximity and altitudes of the approachs should be looked at closely to see if it is possible to increase the altitudes for aircraft over vny on approach to bur. My flight operations for the los angeles police department require that I fly the majority of the time in the los angeles basin area and those areas around it. In 13 yrs of this type of flying as crew and pilot, I have developed a great respect for the ATC system in this area. I do believe that some procedures such as these I have described should be looked closely at to see if it is possible to further separate aircraft between approachs at bur and the air traffic flow at vny. I talked telephonically with bur approach control following the incident. I do not know the identify of the small transport, but it was light colored.

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Original NASA ASRS Text

Title: NMAC BETWEEN SMA IN ATA AND SMT ON APCH TO ADJACENT ARPT.

Narrative: I HAD DEPARTED VNY ON HELI FREQ FROM THE NW CORNER AND HAD REQUESTED A HELI W DEP WITH A CLB TO 2700' WHEN POSSIBLE. ATC HAD GIVEN ME CLRNC FOR THE DEP AND CLB. I CLBED APPROX 2 MI W OF THE VNY ARPT AND TURNED EBND TO THE AREA OVER THE TWR. I FLEW SLOWLY NBOUND ALONG BALBOA BLVD ON THE W SIDE OF THE ARPT AT 2700' MSL. AT THE NW CORNER OF THE ARPT I REQUESTED FREQ CHANGE TO THE BUR APCH. I CALLED BUR APCH AND IDENTED MYSELF AS SMA. BUR APCH ADVISED ME TO STAND BY. APPROX 30 SECS LATER I OBSERVED A LIGHT TWIN ENG ACFT AT MY 9:30-10 O'CLOCK POS IN AN EBND DIRECTION AT MY ALT (2700' MSL). I LOWERED COLLECTIVE PITCH AND DSNDED TO 2600' AS THE TWIN SMT PASSED OVER ME. I TURNED BACK TO THE S AND RETURNED TO VNY TWR HELI FREQ AND LANDED. VNY IS AT AN ALT OF 800' MSL IN THE CENTER OF THE SAN FERNANDO VALLEY, N OF LOS ANGELES. 6 MI TO THE E OF VNY IS BUR. BUR ILS APCH AND VOR APCH CUT THROUGH THE TOP OF VNY'S ATA. I BELIEVE THE SMT WAS ON A VOR APCH TO BUR AT THE TIME OF THE INCIDENT. I WAS WORKING WITHIN THE VNY ATA WHICH BROUGHT MY OPERATION AND THAT OF THE SMT WITHIN CLOSE PROX. IN MY OPINION THE PRESENT APCHES AT BUR ARPT ARE TOO CLOSE TO THE OPS AT VNY. THE PRESENT ARSA AT BUR IS A STEP IN THE RIGHT DIRECTION FOR COMS. THE CTLRS AT BUR AND VNY AND TRACON ARE AS GOOD AS I FIND ANYWHERE. THE PHYSICAL PROX AND ALTS OF THE APCHS SHOULD BE LOOKED AT CLOSELY TO SEE IF IT IS POSSIBLE TO INCREASE THE ALTS FOR ACFT OVER VNY ON APCH TO BUR. MY FLT OPS FOR THE LOS ANGELES POLICE DEPT REQUIRE THAT I FLY THE MAJORITY OF THE TIME IN THE LOS ANGELES BASIN AREA AND THOSE AREAS AROUND IT. IN 13 YRS OF THIS TYPE OF FLYING AS CREW AND PLT, I HAVE DEVELOPED A GREAT RESPECT FOR THE ATC SYS IN THIS AREA. I DO BELIEVE THAT SOME PROCS SUCH AS THESE I HAVE DESCRIBED SHOULD BE LOOKED CLOSELY AT TO SEE IF IT IS POSSIBLE TO FURTHER SEPARATE ACFT BTWN APCHS AT BUR AND THE AIR TFC FLOW AT VNY. I TALKED TELEPHONICALLY WITH BUR APCH CTL FOLLOWING THE INCIDENT. I DO NOT KNOW THE IDENT OF THE SMT, BUT IT WAS LIGHT COLORED.

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.