TM 1-1520-238-23
11-1284
Change 7
11.298.
RIGGING HORIZONTAL STABILATOR – continued
11.298.3. Rigging
a. Install protractor fixture (1) on horizontal sta-
bilator (2).
(1) Position fixture (1) on stabilator (2) 11 INCH-
ES inboard of seam (3) formed by the right tip
cap (4) and stabilator (2). Use protractor
fixture.
(2) Tighten four wing nuts (5) on fixture (1).
b. Set protractor assembly (6) for reference zero
point.
(1) Place protractor assembly (6) on transmis-
sion deck (7). Use protractor assembly.
(2) Aline body of protractor assembly (6) with
longitudinal axis of helicopter.
(3) Adjust protractor assembly (6) for zero. This
setting is to be used as a reference point.
(4) Remove zeroed protractor assembly (6).
c. Attach zeroed protractor assembly (6) to
protractor fixture (1).
(1) Loosen two thumbscrews (8) that attach
clamping blocks (9) to protractor fixture (1).
(2) Place zeroed protractor assembly (6) be-
tween blocks (9) and protractor fixture (1).
(3) Ensure that bottom of protractor assembly (6)
is flat against protractor fixture (1).
(4) Tighten two thumbscrews (8).
d. Apply external power to aircraft (para 1.70).
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