TM 1-1520-240-MTF
4-23
CAUTION
After starting the first engine, the second en-
gine must be started or motored for 10 sec-
onds within 3 minutes. When operating for ex-
tended periods with only one engine operat-
ing, the second engine must be motored for 10
seconds every 30 minutes. The N2 section of
the second engine starts turning when the
first engine is started; however, the lubrica-
tion system of the second engine is driven by
N1 section: which does not begin to turn until
the START sequence is initiated. Delay in
starting the second engine will result in exces-
sive wear on the N2 bearing package and
seals.
4. Second engine — Start by using the same
method as the first.
K. 714A POWER ASSURANCE CHECK (PAC).
CAUTION
The following limits must not be exceeded
during the Power Assurance Check:
a. PTIT — 899_
b. N1 — 110%
c. Airspeed — 140 KIAS
d. Torque — 123%
NOTE
Perform this check if the engine has had a major
repair or been replaced, the HMA or DECU has
been replaced, there is a question as to whether
or not the engine is producing at least the minimum
torque, or the aircraft has undergone a phase in-
spection.
