FAA airworthiness directive. 
 F.A.A. airworthiness directive  Federal Aviation Administration airworthiness directive 

 - [Washington, D.C.,  1967-]. 
 - v. 
 - 
<br/><br/> [Irregular. Issued with perforations. Issued by Federal Aviation Administration and classified FAA 1.28:(nos.) prior to no.67-10,Apr. 3, 1967].  CRDP Program Historic Shelflist record. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Airplanes--Airworthiness--Periodicals.
<br/><br/><label>Gov. Doc. Class. No.: </label>TD 4.10: