Traffic pattern conflict between small aircraft and small transport at uncontrolled airport.

Attributes
ACN	139970
Time
Date	199003
Day	Sun
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : l66
State Reference	CA
Altitude	msl bound lower : 800 msl bound upper : 1500
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Operator	general aviation : personal
Make Model Name	Small Aircraft, High Wing, 1 Eng, Fixed Gear
Flight Phase	descent : approach landing other
Flight Plan	None
Aircraft 2
Make Model Name	Small Transport, Low Wing, 2 Recip Eng
Flight Phase	descent : approach landing : go around
Person 1
Affiliation	Other
Function	flight crew : single pilot
Qualification	pilot : private pilot : instrument
Experience	flight time last 90 days : 25 flight time total : 2500 flight time type : 1000
ASRS Report	139970
Person 2
Affiliation	Other
Function	flight crew : single pilot
Events
Anomaly	conflict : airborne less severe non adherence : published procedure other spatial deviation
Independent Detector	other flight crewa
Resolutory Action	none taken : insufficient time
Consequence	Other
Supplementary
Primary Problem	Ambiguous
Air Traffic Incident	other

Narrative:

Traffic pattern very busy (sunday). Mixture of experimental, antique, singles and light twins. Using frequency 122.8 I announced entry on a '45' at 1500' MSL, which is correct for this field. Announced downwind, abeam. Announced my base leg about 1 mi from T/D. At that time a twin announced turning final 'over main st,' which is about 3 mi from T/D. He asked, 'what are your intentions?' I said, 'I'm going to land.' I was unable to see the other aircraft and I was not about to start evasive action at this point. He could see me as I was in front of him. As a result, the twin made a successful go around. On landing the twin pilot approached with a very belligerent attitude. I can understand his viewpoint, however it was an event that just happened. The situation just required more care in announcing positions and intentions on the already busy frequency. The twin pilot stated he was going to report the incident, thus my recording of the facts of the situation.

Original NASA ASRS Text

Title: TRAFFIC PATTERN CONFLICT BETWEEN SMA AND SMT AT UNCONTROLLED ARPT.

Narrative: TFC PATTERN VERY BUSY (SUNDAY). MIXTURE OF EXPERIMENTAL, ANTIQUE, SINGLES AND LIGHT TWINS. USING FREQ 122.8 I ANNOUNCED ENTRY ON A '45' AT 1500' MSL, WHICH IS CORRECT FOR THIS FIELD. ANNOUNCED DOWNWIND, ABEAM. ANNOUNCED MY BASE LEG ABOUT 1 MI FROM T/D. AT THAT TIME A TWIN ANNOUNCED TURNING FINAL 'OVER MAIN ST,' WHICH IS ABOUT 3 MI FROM T/D. HE ASKED, 'WHAT ARE YOUR INTENTIONS?' I SAID, 'I'M GOING TO LAND.' I WAS UNABLE TO SEE THE OTHER ACFT AND I WAS NOT ABOUT TO START EVASIVE ACTION AT THIS POINT. HE COULD SEE ME AS I WAS IN FRONT OF HIM. AS A RESULT, THE TWIN MADE A SUCCESSFUL GAR. ON LNDG THE TWIN PLT APCHED WITH A VERY BELLIGERENT ATTITUDE. I CAN UNDERSTAND HIS VIEWPOINT, HOWEVER IT WAS AN EVENT THAT JUST HAPPENED. THE SITUATION JUST REQUIRED MORE CARE IN ANNOUNCING POSITIONS AND INTENTIONS ON THE ALREADY BUSY FREQ. THE TWIN PLT STATED HE WAS GOING TO RPT THE INCIDENT, THUS MY RECORDING OF THE FACTS OF THE SITUATION.

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.