Bell 430 near midair collision with S76 shortly after leveloff from oil rig near lla.

Attributes
ACN	444238
Time
Date	199907
Day	Tue
Local Time Of Day	1201 To 1800
Place
Locale Reference	navaid : lla.vor
State Reference	LA
Altitude	msl single value : 3400
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tower : sat.tower
Operator	general aviation : corporate
Make Model Name	Bell Helicopter Textron Undifferentiated or Other Model
Operating Under FAR Part	Part 91
Navigation In Use	other vortac
Flight Plan	None
Aircraft 2
Operator	common carrier : air taxi
Make Model Name	S-76/S-76 Mark II
Operating Under FAR Part	Part 135
Flight Phase	cruise : level
Flight Plan	VFR
Person 1
Affiliation	company : corporate
Function	flight crew : single pilot
Qualification	pilot : instrument pilot : commercial pilot : cfi pilot : atp pilot : multi engine
Experience	flight time last 90 days : 125 flight time total : 13000 flight time type : 300
ASRS Report	444238
Person 2
Affiliation	company : air taxi
Function	flight crew : single pilot
Qualification	pilot : commercial
Events
Anomaly	conflict : airborne critical conflict : nmac
Independent Detector	other flight crewa
Resolutory Action	none taken : insufficient time
Miss Distance	horizontal : 0 vertical : 75
Supplementary
Problem Areas	Flight Crew Human Performance Environmental Factor Aircraft
Primary Problem	Ambiguous

Narrative:

I was making a VFR climb after departing an oil platform. I was using the autoplt and had altitude select set on 3400 ft. As the aircraft leveled at 3400 ft, an S76 flew over me at I guess 3500 ft. I only saw him because I was scanning for traffic and happened to be looking out my right window. Our courses were a little less than 90 degrees diverging. My guess is that I was in his front door post blind spot and he was in my overhead panel blind spot. I scan and clear for traffic. In the future, I will s-turn slightly as I climb to make sure I have no blind spots.

Original NASA ASRS Text

Title: BELL 430 NMAC WITH S76 SHORTLY AFTER LEVELOFF FROM OIL RIG NEAR LLA.

Narrative: I WAS MAKING A VFR CLB AFTER DEPARTING AN OIL PLATFORM. I WAS USING THE AUTOPLT AND HAD ALT SELECT SET ON 3400 FT. AS THE ACFT LEVELED AT 3400 FT, AN S76 FLEW OVER ME AT I GUESS 3500 FT. I ONLY SAW HIM BECAUSE I WAS SCANNING FOR TFC AND HAPPENED TO BE LOOKING OUT MY R WINDOW. OUR COURSES WERE A LITTLE LESS THAN 90 DEGS DIVERGING. MY GUESS IS THAT I WAS IN HIS FRONT DOOR POST BLIND SPOT AND HE WAS IN MY OVERHEAD PANEL BLIND SPOT. I SCAN AND CLR FOR TFC. IN THE FUTURE, I WILL S-TURN SLIGHTLY AS I CLB TO MAKE SURE I HAVE NO BLIND SPOTS.

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.