Tri-option controller reference aircraft manual /

Bibliographic Details
Corporate Authors:	United States. Federal Aviation Administration. En Route Instructional Systems Unit, United States. Federal Aviation Administration
Format:	Government Document Book
Language:	English
Published:	Oklahoma, City, Okla. : En Route Instructional Systems Unit, AAC-931D, Mike Monroney Aeronautical Center, 1991.
Subjects:	Airplanes > Recognition. Helicopters > Recognition. Air traffic control > United States.

Description
Item Description:	"April 1991." "ATG-2" --Cover.
Physical Description:	229 pages : illustrations (some color) ; 28 cm.
Bibliography:	Includes bibliographical references (page 227).