Lycoming TIO-540-A1A, Operator'S Manual, Page: 94 / 138

SECTION 4 LYCOMING OPERATOR’S MANUAL
PERIODIC INSPECTIONS TIO-540 SERIES – ANGLE VALVE CYLINDER HEADS
1. DAILY PRE-FLIGHT (ENGINE).
a. Be sure all switches are in the “Off” position.
b. Be sure magneto ground wires are connected.
c. Check oil level.
d. See that fuel tanks are full.
e. Check fuel and oil line connections, note minor indications for repair at 50-hour inspections. Repair
any leaks before aircraft is flown.
f. Open the fuel drain to remove any accumulation of water and sediment.
g. Make sure all shields and cowling are in place and secure. If any are missing or damaged, repair, or
replacement should be made before the aircraft is flown.
h. Check controls for general condition, travel, and freedom of operation.
i. Induction system air filter should be inspected and serviced in accordance with the airframe
manufacturer’s recommendations.
2. DAILY PRE-FLIGHT (TURBOCHARGER).
a. Inspect mounting and connections of turbocharger for security, oil leakage, and air or exhaust gas
leakage.
b. Check engine crankcase breather for restrictions to breather.
3. 10-HOUR INSPECTION (ENGINE).
Within ten (10) hours of operating time, for new, rebuilt, or newly
overhauled engines, replace the oil filter, and conduct an inspection of the contents of the used oil filter for
traces of metal particles.
4. 25-HOUR INSPECTION (ENGINE).
After twenty-five (25) hours of operating time since the first
inspection, new, rebuilt, or newly overhauled engines should undergo a 50-hour inspection including
draining and renewing lubricating oil, replacing the oil filter, and inspecting the contents of the used oil
filter.
NOTE
If an engine does not have a full-flow oil filter, change oil every 25 hours; also, inspect oil
pressure and suction screens for metal contamination, and clean thoroughly before
reinstallation.
5. 50-HOUR INSPECTION (ENGINE).
In addition to the items listed for daily pre-flight inspection, the
following maintenance checks should be made after every fifty (50) hours of operation.
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