LYCOMING OPERATOR’S MANUAL SECTION 4
O-235 AND O-290 SERIES PERIODIC INSPECTIONS
SECTION 4
PERIODIC INSPECTIONS
NOTE
Perhaps no other factor is quite so important to safety and durability of the aircraft and its
components as faithful and diligent attention to regular checks for minor troubles and
prompt repair when they are found.
The operator should bear in mind that the items listed in the following pages do not constitute a complete
aircraft inspection, but are meant for the engine only. Consult the airframe manufacturer’s handbook for
additional instructions.
Pre-Starting Inspection – The daily pre-flight inspection is a check of the aircraft prior to the first flight of
the day. This inspection is to determine the general condition of the aircraft and engine.
The importance of proper pre-flight inspection cannot be over emphasized. Statistics prove several
hundred accidents occur yearly directly responsible to poor pre-flight.
Among the major causes of poor pre-flight inspection are lack of concentration, reluctance to
acknowledge the need for a check list, carelessness bred by familiarity and haste.
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