3.1 Item description. The gun system shall be a double-ended percus-
sion fired 25-millimeter (mm) automatic gun system intended for mounting on
the AV-8B aircraft. The gun system shall consist of a gun pak mounted on the
port side of the fuselage, an ammunition storage and handling pak mounted on
the starboard side of the fuselage, and an ammunition crossover unit with
chuting and conveyor to transfer ammunition from the ammunition pak to the gun
transfer unit in the gun pak. The gun system shall be remotely fired by the
pilot cockpit controls. The drive power for the gun system shall utilize
aircraft engine bleed air.
3.1.1 Major component list. The major components of the gun system
(see Drawing 1395AS1OO) shall be as specified in Table I. The installation
hardware shall be as specified on Drawing 75A732501.
Major component list.
Gun Subsystem, 25-mm, Aircraft,
Pneumatic Drive Unit
25-mm Gun Pak Assembly-
Ammunition Handling Subsystem,
25-mm, Aircraft, GFK-11/49E-10
Electronic Control Unit
25-mm Ammo Pak Assembly -