Narrative:

When on a traffic pattern visual approach to 32R at bfi; on the final approach leg a helicopter cut in front of [our] C152 at the same altitude. The helicopter was supposed to follow the C152 before landing on 'PAD6'. The flight instructor on the C152 decided to go around to avoid a mid-air collision with a helicopter; which caused the airspeed in the C152 to substantially drop at a low altitude.when the tower was queried about the position of the helicopter; the tower mentioned the helicopter should have followed the C152.

Google
 

Original NASA ASRS Text

Title: C152 instructor pilot reported a NMAC with a helicopter in the pattern at BFI airport.

Narrative: When on a traffic pattern visual approach to 32R at BFI; on the final approach leg a helicopter cut in front of [our] C152 at the same altitude. The helicopter was supposed to follow the C152 before landing on 'PAD6'. The flight instructor on the C152 decided to go around to avoid a mid-air collision with a helicopter; which caused the airspeed in the C152 to substantially drop at a low altitude.When the Tower was queried about the position of the helicopter; the Tower mentioned the helicopter should have followed the C152.

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.