Near midair collision between 2 small aircraft's in the circuit at an uncontrolled airport at night.

Attributes
ACN	163912
Time
Date	199011
Day	Sun
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : 7my
State Reference	NJ
Altitude	msl bound lower : 1000 msl bound upper : 1000
Environment
Flight Conditions	VMC
Light	Night
Aircraft 1
Operator	general aviation : instructional
Make Model Name	Small Aircraft, High Wing, 1 Eng, Fixed Gear
Flight Phase	descent : approach landing other other
Flight Plan	None
Aircraft 2
Make Model Name	Small Aircraft, High Wing, 1 Eng, Fixed Gear
Flight Phase	cruise other other
Person 1
Affiliation	Other
Function	flight crew : single pilot
Qualification	pilot : private
Experience	flight time last 90 days : 20 flight time total : 164 flight time type : 164
ASRS Report	163912
Person 2
Affiliation	Other
Function	flight crew : single pilot
Qualification	pilot : private
Events
Anomaly	conflict : nmac non adherence : far other anomaly other other spatial deviation
Independent Detector	other flight crewa
Resolutory Action	none taken : insufficient time
Consequence	Other
Miss Distance	horizontal : 0 vertical : 75
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

I called right downwind 26 due to extensive radio traffic. The same unicom frequency was in use by at least 5 other airports within radio range. Also, there was an extensive amount of horseplay on 122.8; e.g., quacking ducks, drunken pilots, personal messages and static. At time of near miss small aircraft Y passed directly under us, small aircraft X, in what appeared to be a side slip.

Original NASA ASRS Text

Title: NMAC BETWEEN 2 SMA'S IN THE CIRCUIT AT AN UNCONTROLLED ARPT AT NIGHT.

Narrative: I CALLED RIGHT DOWNWIND 26 DUE TO EXTENSIVE RADIO TFC. THE SAME UNICOM FREQ WAS IN USE BY AT LEAST 5 OTHER ARPTS WITHIN RADIO RANGE. ALSO, THERE WAS AN EXTENSIVE AMOUNT OF HORSEPLAY ON 122.8; E.G., QUACKING DUCKS, DRUNKEN PLTS, PERSONAL MESSAGES AND STATIC. AT TIME OF NEAR MISS SMA Y PASSED DIRECTLY UNDER US, SMA X, IN WHAT APPEARED TO BE A SIDE SLIP.

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.