AUTOMATIC RIPCORD RELEASE, MODEL 451
OPERATION UNDER USUAL CONDITIONS
ASSEMBLY AND PREPARATION FOR USE
2. A Jump Log Record shall be maintained for each AR2 placed in service.
a. All parachute jumps with the AR2 must be recorded in an altered individual Army
Parachute Log Record (DA Form 3912).
b. Alteration of the Army Parachute Log Record and subsequent entries will be
accomplished as follows:
On the front cover, after ARMY PARACHUTE LOG RECORD, add AR2.
In the JUMP, INSPECTION, AND REPACK DATA page, make the following
In the heading, cross out REPACK.
Cross out the heading BAG NUMBER and enter AR2 DIAL SETTING.
c. Record Information as follows:
On the inside of the front cover, enter the individual AR2 serial number, type, date of
manufacture, manufacturer, contract number, station, unit and date placed in service.
On the INSPECTION DATA page, enter the date of the test, the altitude setting on
the AR2 and the number of the jump.
d. Attach an individual Log Record to a serviceable AR2 as follows:
Cut a 36-inch length of tape lacing and tying and double the lacing length.
Pass looped ends of doubled lacing length around centerfold of Log Record and form
a slip loop on outside at Log Record top.
Pass lacing length running ends through corner attaching hole from front cover of Log
Record. Ensure running ends are routed over that part of the lacing length located
along the Log Record centerfold.
Complete attachment tie by making a ½ hitch on top of the slip loop previously made
in step (2).
Pass the loose ends of the cord length around power cable housing at a point adjacent
to power housing retainer.
Secure cord ends to cord length with three alternating half-hitches and an overhand
knot in each tie end.