Maintenance of air traffic control beacon interrogator (ATCBI) equipment. 

 - [Washington, D.C.,  1978]. 
 - v. 
<br/><br/> 6/22/78 sw.  CRDP Program Historic Shelflist record. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Air traffic control--Maintenance and repair.
<br/><br/><label>Gov. Doc. Class. No.: </label>TD 4.8/2:6360.1 A/CH.6