با توجه به ص 30 از   part-21  موارد زیر بایستی در AD ذکر گردد:


An airworthiness directive shall contain at least the following information: 


1. an identification of the unsafe condition; 

2. an identification of the affected aircraft; 

3. the action(s) required; 

4. the compliance time for the required action(s); 


5. the date of entry into force.