TM 1-1510-225-MTF
PROCEDURE
TROUBLESHOOTING
REFERENCE
16. Engine performance at maximum
cruise power - Perform as required
(Chapter 4).
*17. Engine ice vanes - Check operation as
follows:
(a) LEFT and RIGHT ACTUATOR
switches - MAIN.
(b) LEFT and RIGHT ENG ANTI-
ICE switches - ON. Check L and
R ENG ANTI-ICE annunciators
illuminated.
(c) Torquemeters - Monitor for
approximately a 10% drop in
torque with ice vanes extended.
(d) LEFT and RIGHT ENGINE
ANTI-ICE switches - OFF.
(e) Torquemeters - Monitor for an
increase in torque.
(f) MN ENG ANTI-ICE circuit
breakers - Pull. Check that L and
R ENG ICE FAIL annunciator
lights illuminate.
(g) LEFT and RIGHT ACTUATOR
switches - STANDBY. Check
that LEFT and RIGHT ENG ICE
FAIL annunciator lights extin-
guish.
(h) LEFT and RIGHT ENGINE
ANTI-ICE switches - ON. Check
that LEFT and RIGHT ENG ICE
FAIL annunciators illuminate.
(i) LEFT and RIGHT ENG ANTI-
ICE switches - OFF.
(j) L and R MN ENG ANTI-ICE cir-
cuit breakers - Reset.
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