Close proximity 2 GA helicopters flying at night in fog along the freeway near lgb.

Attributes
ACN	125398
Time
Date	198910
Day	Wed
Local Time Of Day	1801 To 2400
Place
Locale Reference	airport : lgb
State Reference	CA
Altitude	agl bound lower : 700 agl bound upper : 750
Environment
Flight Conditions	Marginal
Light	Night
Aircraft 1
Operator	general aviation : personal
Make Model Name	Helicopter
Flight Phase	cruise other
Flight Plan	VFR
Aircraft 2
Make Model Name	Helicopter
Flight Phase	cruise other
Flight Plan	VFR
Person 1
Affiliation	Other
Function	flight crew : single pilot
Qualification	pilot : private
Experience	flight time last 90 days : 37 flight time total : 118 flight time type : 118
ASRS Report	125398
Person 2
Affiliation	Other
Function	flight crew : single pilot
Events
Anomaly	conflict : nmac
Independent Detector	other flight crewa
Resolutory Action	none taken : insufficient time
Consequence	Other
Miss Distance	horizontal : 0 vertical : 50
Supplementary
Primary Problem	Flight Crew Human Performance

Narrative:

I was flying an small aircraft X helicopter flying northwest along I-5. I always fly on my side of the freeway just like cars. At the intersection of I-5 and I-710 another helicopter (possibly an small aircraft Y) white with blue stripes, as I consider, came more on my side and flew directly beneath me. I estimate he was 50' or less. I don't think he ever saw me, even though I had my landing light on. I didn't see him until it was too late.

Original NASA ASRS Text

Title: CLOSE PROX 2 GA HELICOPTERS FLYING AT NIGHT IN FOG ALONG THE FREEWAY NEAR LGB.

Narrative: I WAS FLYING AN SMA X HELI FLYING NW ALONG I-5. I ALWAYS FLY ON MY SIDE OF THE FREEWAY JUST LIKE CARS. AT THE INTXN OF I-5 AND I-710 ANOTHER HELI (POSSIBLY AN SMA Y) WHITE WITH BLUE STRIPES, AS I CONSIDER, CAME MORE ON MY SIDE AND FLEW DIRECTLY BENEATH ME. I ESTIMATE HE WAS 50' OR LESS. I DON'T THINK HE EVER SAW ME, EVEN THOUGH I HAD MY LNDG LIGHT ON. I DIDN'T SEE HIM UNTIL IT WAS TOO LATE.

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.