Police said they believed the two were scattering cremation ashes and floral petals when the plane crashed into the pier. Family and friends were said to be in two speedboats below at the time.
Witnesses reported the plane made two circuits, then suffered engine failure on the third go-round. Sawang Boriboon Foundation officials pulled the wreckage ashore on Pattaya Beach, its wing, cockpit and rear wheel broken.
Microlights, also known as ultralights, are popular recreational aircraft in many countries.
Pattaya Mail contributor Roland Franzke managed to capture these amazing photos of the tragedy as it was unfolding.