Air traffic control certification procedures. 

 - [Washington, D.C.,  1970]. 
 - [55] p. 
<br/><br/> Handbook.  [July 30, 1970].  Cover title.  4to.  [Issued with perforations. Cancels AT P 7220.6A, Certification and rating].  Distribution made by issuing office.  CRDP Program Historic Shelflist record. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Air traffic control--United States.
<br/><br/><label>GPO Item No.: </label>0431-C-04 
<br/><br/><label>Gov. Doc. Class. No.: </label>TD 4.8/2:7220.1