Narrative:

Winds were 360 at 16 kts. While turning from base to short final to runway 35 during a power-off 180 accuracy approach; I noticed a yellow crop-duster more than halfway down the runway in a takeoff roll coming right at us using runway 17. I instructed the student to perform a go-around and then kindly urged the crop-duster to use the active runway on the radio. In addition to taking off with a 16 knot tailwind he also took off on the opposite runway while two [other aircraft] were in the pattern for runway 35; and did not make any traffic calls.

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Original NASA ASRS Text

Title: An instructor pilot saw a crop duster taking of opposite direction on CTAF GAF Runway 17 and so had his student execute a go-around to avoid the aircraft. The winds were 360°/17 kts and three aircraft in the Runway 36 pattern communicating on CTAF frequency. The crop dusting pilot was not communicating.

Narrative: Winds were 360 at 16 kts. While turning from base to short final to runway 35 during a power-off 180 accuracy approach; I noticed a yellow crop-duster more than halfway down the runway in a takeoff roll coming right at us using runway 17. I instructed the student to perform a go-around and then kindly urged the crop-duster to use the active runway on the radio. In addition to taking off with a 16 knot tailwind he also took off on the opposite runway while two [other aircraft] were in the pattern for runway 35; and did not make any traffic calls.

Data retrieved from NASA's ASRS site 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.