Attitude Indicator, Type ARU-11/A, USAF F4 Phantom II H-21 as used in the US

as used in the US Air Force C-121 transport version of the Lockheed Constellation

and many fold-out pages

to turn the aircraft to put it on the desired course as set in the autopilot system

This is an original document and not a reprint

The construction is that of a wood mast encased in thin metal with a cable running internally lengthwise from tip to a junction at the base

Attitude Indicator, Type ARU-11/A, USAF F4 Phantom II H-21 as used in the USThis is a Cold War Vietnam War era Attitude Indicator type ARU 11 A, made by Lear, Model 4060P, part number 139001 01 04, MIL I 27610. This instrument appeared on the pilot's instrument panel of the US Air Force F4 Phantom II jet fighter. This unit has a service label from McClellan Air Force Base in Sacramento CA dated 1984. The purpose of the instrument is to rapidly indicate to the pilot the attitude, or relationship, of the aircraft with respect