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NOTICE: If a fault is found during the pre-flight test, the EECS identifies the fault and
illuminates the NTO PRI and/or NTO SEC annunciators, identify the fault(s) using
the FST, correct the condition(s), and clear the fault(s).
7. Once the pre-flight test is completed, the PFT annunciator goes out. If either the NTO PRI or
NTO SEC annunciator remains illuminated, there is a condition that prevents flight and must
be corrected. Such conditions can be a fault that exceeds set limits or the system does not
have sufficient resources to operate the engine. If a fault is found, refer to the "Engine
Conditions" chapter in this manual.
8. If the TLO annunciator is illuminated after the pre-flight test is completed, check with
maintenance as soon as possible to correct the fault.
CAUTION
NOTICE: Do not take-off if any of the following occur:
• Low, high or surging rpm
• Low, high or fluctuating oil pressure
• Low or high fuel flow
• Excessive manifold pressure
• NTO annunciator illuminated.
NOTICE: If problems are found that go beyond field maintenance, contact Lycoming Engines'
Technical Support.
9. The engine is ready for take-off when the oil temperature is greater than 140°F (60°C) and
there are no faults or items that need corrective action.
10. Use smooth transitions of the power control (FULL CLOSED to FULL OPEN in no less than
2 seconds during power control shift) for the desired rpm.
NOTICE: Ground operation of the engine is not an acceptable substitute for an in-flight test.
Ground operation does not supply sufficient cooling for the cylinders and can cause
contamination in the Lubrication System (with water and acid) which can cause
substantial damage over time to cylinders and other engine components such as
camshafts and lifters.
Do not turn the propeller by hand as a short cut to lubricate the engine since this
manual rotation removes residual oil.
11. Monitor the oil temperature, CHT, EGT, and the climb angles. Keep the airframe speed at a
sufficient air speed to keep the CHT within the specified range in Appendix A.
NOTICE: During engine operation, the data logger (if installed) will automatically record all
engine operating data. This data can be accessed after flight on the FST.
12. After 10 hours of engine operation for a new, rebuilt, or overhauled engine, complete the 10-
hour inspection. Refer to the TEO-540-A1A Engine Maintenance Manual.
Engine Operation
Page 66
IF THE AIRCRAFT DOES NOT CONTINUE FORWARD MOVEMENT,
THE AIR PRESSURE CANNOT SUFFICIENTLY KEEP THE ENGINE
COOL.
TEO-540-A1A Engine Installation and Operation Manual
© 2018 Avco Corporation. All Rights Reserved
October 2018
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