Narrative:

In 6/91 an small transport jet and an small aircraft had a near miss in the traffic pattern at ahn. The aircraft were both on left downwind for runway 27. The jet was overtaking the small aircraft. The small aircraft was #1 for landing and was preparing to turn left base when a small, single engine, low wing (who was #2 on downwind) turned back early and cut off #1. #1 executed a 360 degree turn for spacing after announcing his intentions on unicom. The small aircraft #1 had turned 20-30 degrees to the right when the jet had to make a diving left turn to avoid collision. Causes: (I was the small aircraft pilot.) the small aircraft should have just extended his downwind instead of the 360 degree turn. We were in a hurry and should have thought more. The small aircraft should have looked more carefully to his right rear before turning. The jet should have flown a higher, wider pattern since he knew that 2 other, slower aircraft were in the pattern. Proper procedure (aim and far 91) dictates that aircraft overtaking other aircraft should pass well clear and to the right. The jet's evasive left dive shows that he was not very far to the right and was apparently near the altitude (1800' MSL).

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Original NASA ASRS Text

Title: PLT OF SMA CUT OFF ON VFR APCH TO UNCONTROLLED ARPT STARTED A 360 DEGREE TURN AND CAME IN CONFLICT WITH AN OVERTAKING SMT JET ACFT.

Narrative: IN 6/91 AN SMT JET AND AN SMA HAD A NEAR MISS IN THE TFC PATTERN AT AHN. THE ACFT WERE BOTH ON LEFT DOWNWIND FOR RWY 27. THE JET WAS OVERTAKING THE SMA. THE SMA WAS #1 FOR LNDG AND WAS PREPARING TO TURN LEFT BASE WHEN A SMALL, SINGLE ENG, LOW WING (WHO WAS #2 ON DOWNWIND) TURNED BACK EARLY AND CUT OFF #1. #1 EXECUTED A 360 DEG TURN FOR SPACING AFTER ANNOUNCING HIS INTENTIONS ON UNICOM. THE SMA #1 HAD TURNED 20-30 DEGS TO THE RIGHT WHEN THE JET HAD TO MAKE A DIVING LEFT TURN TO AVOID COLLISION. CAUSES: (I WAS THE SMA PLT.) THE SMA SHOULD HAVE JUST EXTENDED HIS DOWNWIND INSTEAD OF THE 360 DEG TURN. WE WERE IN A HURRY AND SHOULD HAVE THOUGHT MORE. THE SMA SHOULD HAVE LOOKED MORE CAREFULLY TO HIS RIGHT REAR BEFORE TURNING. THE JET SHOULD HAVE FLOWN A HIGHER, WIDER PATTERN SINCE HE KNEW THAT 2 OTHER, SLOWER ACFT WERE IN THE PATTERN. PROPER PROC (AIM AND FAR 91) DICTATES THAT ACFT OVERTAKING OTHER ACFT SHOULD PASS WELL CLR AND TO THE RIGHT. THE JET'S EVASIVE LEFT DIVE SHOWS THAT HE WAS NOT VERY FAR TO THE RIGHT AND WAS APPARENTLY NEAR THE ALT (1800' MSL).

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.