Question

A manufacturer of an aircraft may issue information concerning an improvement or change that may be made on an aircraft, these changes are called

Answer 1

Service Bulletins

Step-by-step explanation:

A service bulletin as seen in the question above can simply be defined as a document used by aircraft manufactures to issue or give information concerning improvements or changes that may be made to or on an aircraft.

Depending on the manufacturer's judgement of the modification or improvement as either a product improvement or a safety improvement, service bulletins will be released.

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