Narrative:

Crowded pattern at tdf. 4-5 planes touch and go. I'm on base leg attempting to teach my student to land. Cleared to my right and there was a strange homebuilt pusher propeller type plane from a straight-in final, unannounced. I grabbed controls and avoided the obvious conflict. Much chatter on the radios. Doubt if the pilot ever knew. Good lesson for my student about the hazard of straight-in finals.

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Original NASA ASRS Text

Title: ACFT AT UNCONTROLLED ARPT ON A STRAIGHT IN APCH CREATED CONFLICT WITH TRAINING ACFT IN PATTERN.

Narrative: CROWDED PATTERN AT TDF. 4-5 PLANES TOUCH AND GO. I'M ON BASE LEG ATTEMPTING TO TEACH MY STUDENT TO LAND. CLRED TO MY RIGHT AND THERE WAS A STRANGE HOMEBUILT PUSHER PROP TYPE PLANE FROM A STRAIGHT-IN FINAL, UNANNOUNCED. I GRABBED CONTROLS AND AVOIDED THE OBVIOUS CONFLICT. MUCH CHATTER ON THE RADIOS. DOUBT IF THE PLT EVER KNEW. GOOD LESSON FOR MY STUDENT ABOUT THE HAZARD OF STRAIGHT-IN FINALS.

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.