JS1 Jet Sustainer Flight Manual Supplement - Issue 1
Date of issue: 31.03.2016
Accepted section
Page 4–11
4.4.4. Retracting
Retraction is initiated when the Jet Control toggle switch is moved to
the RETR (bottom) position and the temperature (EGT) is below a pre-
set threshold.
If the measured EGT exceeds the maximum set temperature (factory
default is 55°C or 131°F), the system will remain in the Cooling Mode.
Retracting will be initiated automatically only after the cooling cycle is
completed.
During retraction the JDU will display a
retracting pylon and the Engine Retraction
LED will be flashing green.