STEMME S10 - Page 18

DOCUMENT NUMBER:
L400-912810 ISSUE AUG 20, 2016
AMENDMENT: 04
DATE: APR 04, 2022
APPROVED SECTION - PAGE 4-40
AIRCRAFT FLIGHT MANUAL STEMME S10, VARIANT S12
WARNING
If OAT is extremely low, i.e. at high altitudes or in cold areas, battery capacity
after longer soaring time might be too low for engine restart. Successful engine
restart might only be possible at higher temperatures and lower altitudes.
This must be taken into account for ight and route planning.
CAUTION
In ight engine start: The propeller may continue turning with the engine
not running (following an unsuccessful engine re-start), because engine and
propeller are isolated by a centrifugal clutch. A running engine is indicated
only by the engine tachometer, not by observing propeller turning.
CAUTION
After the starter is actuated an automatic electronic device inhibits the igni-
tion with a time delay of three seconds. The starter must be operated always
for at least three seconds. The time delay allows the propeller blades to be
fully extended before the engine starts, and consequently reduces the loads
for the propeller blades and their corresponding stops.
CAUTION
If the engine res before the expected time delay of three seconds is over, i.e. in
case of a malfunctioning electronic device, system checks must be performed
before the next ight in accordance with the S12 Aircraft Maintenance Manual.
CAUTION
During a cold engine start-up, the power lever must be fully pulled back to its
”IDLE power” stop. In case of a warm engine start-up, it is possible to open
the throttle slightly (add up to 10% power) to improve the engine start-up
behavior.