Helicopter at cruise has near midair collision with second helicopter.

Attributes
ACN	286489
Time
Date	199410
Day	Fri
Local Time Of Day	0001 To 0600
Place
Locale Reference	airport : cgx
State Reference	IL
Altitude	msl bound lower : 1300 msl bound upper : 1300
Environment
Flight Conditions	VMC
Light	Night
Aircraft 1
Controlling Facilities	tracon : ord
Operator	general aviation : corporate
Make Model Name	Helicopter
Operating Under FAR Part	Part 91
Flight Phase	cruise other
Flight Plan	None
Aircraft 2
Make Model Name	Helicopter
Operating Under FAR Part	other : unknown
Flight Phase	cruise other
Person 1
Affiliation	Other
Function	flight crew : single pilot
Qualification	pilot : cfi pilot : atp pilot : instrument
Experience	flight time last 90 days : 70 flight time total : 7600 flight time type : 5300
ASRS Report	286489
Person 2
Affiliation	Other
Function	flight crew : single pilot
Qualification	pilot : commercial pilot : instrument
Events
Anomaly	conflict : nmac
Independent Detector	other flight crewa
Resolutory Action	none taken : insufficient time other
Consequence	Other
Miss Distance	horizontal : 100 vertical : 0
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

While en route from midway airport to the downtown area at night, I experienced a near midair collision approximately 2 mi west of the meigs airport. Radar service had just been terminated with midway and I had switched to the meigs CTAF when a helicopter passed by approximately 100 ft to left at the same altitude. I did not see the other helicopter until it was approximately 200-300 ft away. There was no time to perform any type of evasive maneuver. It was very difficult to see the other helicopter because of all the tall buildings and city lights behind it. We were on different frequencys which also contributed to my not being aware of his position. Note: meigs tower was closed.

Original NASA ASRS Text

Title: HELI AT CRUISE HAS NMAC WITH SECOND HELI.

Narrative: WHILE ENRTE FROM MIDWAY ARPT TO THE DOWNTOWN AREA AT NIGHT, I EXPERIENCED A NMAC APPROX 2 MI W OF THE MEIGS ARPT. RADAR SVC HAD JUST BEEN TERMINATED WITH MIDWAY AND I HAD SWITCHED TO THE MEIGS CTAF WHEN A HELI PASSED BY APPROX 100 FT TO L AT THE SAME ALT. I DID NOT SEE THE OTHER HELI UNTIL IT WAS APPROX 200-300 FT AWAY. THERE WAS NO TIME TO PERFORM ANY TYPE OF EVASIVE MANEUVER. IT WAS VERY DIFFICULT TO SEE THE OTHER HELI BECAUSE OF ALL THE TALL BUILDINGS AND CITY LIGHTS BEHIND IT. WE WERE ON DIFFERENT FREQS WHICH ALSO CONTRIBUTED TO MY NOT BEING AWARE OF HIS POS. NOTE: MEIGS TWR WAS CLOSED.

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.