Narrative:

I had departed an offshore oil platform en route to ingleside, tx, with 2 passenger on board. The front seat passenger keyed his headset and said 'that jet is flying low, isn't he.' I looked at him when I heard him key his microphone and saw a coast guard jet in my left windshield closing at a high rate of speed. I immediately descended and turned sharply left to avoid a collision. The mlt continued north and I saw no evasive actions from him. This occurred in an area of fairly intense offshore helicopter operations. We normally operate at altitudes below 1000 ft. I was squawking a discrete transponder code assigned to our company with altitude readout. I feel that if we are required to squawk appropriate codes with altitude readout to operate in the ADIZ then military aircraft should be on an appropriate frequency so that they can be given our aircraft as traffic. This was very nearly fatal.

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Original NASA ASRS Text

Title: NMAC.

Narrative: I HAD DEPARTED AN OFFSHORE OIL PLATFORM ENRTE TO INGLESIDE, TX, WITH 2 PAX ON BOARD. THE FRONT SEAT PAX KEYED HIS HEADSET AND SAID 'THAT JET IS FLYING LOW, ISN'T HE.' I LOOKED AT HIM WHEN I HEARD HIM KEY HIS MIKE AND SAW A COAST GUARD JET IN MY L WINDSHIELD CLOSING AT A HIGH RATE OF SPD. I IMMEDIATELY DSNDED AND TURNED SHARPLY L TO AVOID A COLLISION. THE MLT CONTINUED N AND I SAW NO EVASIVE ACTIONS FROM HIM. THIS OCCURRED IN AN AREA OF FAIRLY INTENSE OFFSHORE HELI OPS. WE NORMALLY OPERATE AT ALTS BELOW 1000 FT. I WAS SQUAWKING A DISCRETE XPONDER CODE ASSIGNED TO OUR COMPANY WITH ALT READOUT. I FEEL THAT IF WE ARE REQUIRED TO SQUAWK APPROPRIATE CODES WITH ALT READOUT TO OPERATE IN THE ADIZ THEN MIL ACFT SHOULD BE ON AN APPROPRIATE FREQ SO THAT THEY CAN BE GIVEN OUR ACFT AS TFC. THIS WAS VERY NEARLY FATAL.

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.