Service Letters and Service Bulletins were produced by Aircraft Manufacturers to inform all concerned of new maintenance information, modifications, improvments and policies pertaining to the operation and support of their aircraft.

Service Bulletins

Service Bulletins describe mandatory procedures that must be observed for safety reasons. Service Bulletins are identified by the word BULLETIN printed (originally in Red) on the right margin. A full searchable index of the Service Bulletins is available by clicking on the image below. Print out and use this index as a reference to all the service bulletins, and then download the bulletin you need by clicking on the Service Bulletin number from the table at the bottom of this page.

Service Letters

Service Letters were issued to explain service policies and describe modifications, processes, new products and other information pertinent to the operation, maintenance and repair of our aircraft. Service Letters can be identified by the word LETTER printed (orignially in Blue) on the right margin.

For details of the Service Letters go to the Service Letters Page.

The Service Letters and Bulletins were supplied by Fletchair and have been provided here by the AYA as a service to its members, and the quality of the documents varies due to the quality of the original material provided.

SERVICE BULLETINS (Click on the Number to Download to bulletin you need. It is recommended that you print out the Service Bulletin index to help you locate identify the bulletin you need.)