70-21-01 DORNIER, AG: Amdt. 39-1091. Applies to Model DO-28D-1 airplanes.
To prevent separation of the skin from the cabin door structure, within the next 100 hours' time in service after the effective date of this AD, unless already accomplished, secure the door skin by installing additional screws in accordance with Dornier Service Bulletin No. 015- 1206, dated October 1, 1969, or later LBA-approved issue or an FAA-approved equivalent.
This amendment becomes effective November 5, 1970.