Pilot's Rail Alignment

TM 9-1270-212-14&P

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

is forward.

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

helicopter),

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.

NOTE

(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

follows:

(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

forward.

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

follows:

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

NOTE

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

heli-

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-

position.

LAY (or START RLY)" IN a below.

4-8