a. Set circuit breakers as follows:
(5) Attach the LOD to the aft end of the gunner's
rails behind the arm assembly. Insure that the LOD bubble
STARTER RELAY (or START R L Y ) t o o p e n ( o f f )
IGN SYS IGN SOL (or IGN SOL) to open (off)
(6) Repeat steps (3) and (4).
b. Pilot's Rail Alignment.
RPM WARN SYS (or RPM WARN) to open (off)
WING JETTISON (or WING STORES JTSN) in the
(1) For HSS XM128 (in an AH-lS(Mod) helicopter),
pilot's compartment to open (off)
leave the LOD rail clamp base locked in the O-degree posi-
tion. For the HSS XM136 (in an AH-1S
WING JETTISON (or WING STORE GNR JTSN and
lock the LOD rail clamp base in the 5.5-degree position
PLT JTSN) in the battery compartment to open (off).
(paragraph 4-5c(1)). Attach the LOD to the forward end
of the pilot's rails. Insure that the bubble is forward.
(2) Tighten the T-locks on the LOD T-bars until the
LOD is firmly attached to the rails.
Before power is applied, each of the four
boresight potentiometers on the EIA must be
(3) Loosen the roil adjustment locking screw and
set to the approximate midpoint of its limits.
adjust the roll adjustment screw in the support until the
LOD bubble is again centered. Tighten the roll adjustment
locking screw and recheck the bubble.
b. Set the pilot armament control panel switches as
(4) Transfer the LOD to the aft end of the pilot's
rails, behind the arm assembly. Insure that the bubble is
MASTER ARM to OFF
WPN CONT (or WPN CONTR) to GUNNER
(5) Repeat steps (3) and (4).
TURRET to R.
4-7. System Boresighting Procedures.
c. Set the gunner armament control panel switches as
This procedure establishes the requirements for
boresighting the helmet-directed fire control subsystem
(HSS) to the telescopic sight unit (TSU). Verify that the
PLT OVRD (or PLT ORIDE) to OFF
HSS system alignment procedures (paragraphs 4-3 through
4-6) have been completed and that the targets and
TURRET SELECT to R
helicopter are still in the alignment-procedure positions.
COMP to OFF
4-8. Boresighting Preparation.
WING STORES SELECT to OFF
TURRET DEPR LIMIT (or LASER SAFE/TURRET
DEPR LIMIT) to DEPR LIMIT.
In the procedures below, where the nomen-
clature of a control, control position, or indi-
d. Verify that the helicopter battery is connected, and
cator differs between the AH-1S(Mod) and
apply 28-volt external power to the helicopter.
AH-1S helicopters, the basic nomenclature
used is that for the AH-1S(Mod) helicopter
e. Set the HSS PWR (or HSS) and TOW PWR (or TMS
and the nomenclature for the AH-1S
PWR) circuit breakers on the ac circuit breaker panel (or
copters follows, in parentheses and prefixed
ac and armament circuit breaker panel) to closed (on)
with an "or," for example, "STARTER RE-
LAY (or START RLY)" IN a below.