The ELT - an interim report, (Emergency Locator Transmitters) :  an FAA news reprint. 

 - [Washington, D.C.,  1974]. 
 - 1 v. 
<br/><br/> Sept. 1974.  CRDP Program Historic Shelflist record. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Aircraft survival equipment.<br/>Electric batteries.
<br/><br/><label>Gov. Doc. Class. No.: </label>TD 4.9/A:EM 3