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Scheduled Maintenance
200-HOUR INSPECTION
Change coolant every 200 hours or annually,
whichever comes first in accordance with the
airframe manufacturer's instructions.
Change coolant if the color in the sight glass
changes
in
accordance
manufacturer's instructions..
300-HOUR INSPECTION
Remove and clean all fuel nozzles by soaking in
lacquer thinner, acetone or methyl ethyl ketone
(MEK). Fuel nozzles must be cleaned every
300-hours and annual inspection.
500-HOUR INSPECTION
In addition to the items listed for 100-hour
inspections, perform the following inspections and
maintenance every 500 hours of engine operation.
1. Magnetos require a thorough, detailed inspection.
Refer to the applicable service and overhaul
information published by the manufacturer of the
magneto.
Magnetos must be overhauled or
replaced at the same intervals as the engine. TCM
magnetos must be overhauled or replaced every
four years regardless of total operating hours
since last overhaul or replacement.
2. Engine mounted accessories not supplied by
TCM such as alternators, stand-by generators,
etc., may require servicing at specific intervals.
Refer to the instructions provided by the aircraft
manufacturer, accessory manufacturer or STC
holder for detailed information.
3. TCM gear driven alternators require inspection
and testing at 500-hour intervals. Refer to the
applicable alternator manufacturer's instructions.
See "Realated Publications" in the Introduction
section of this manual.
1-10
with
the
airframe
ANNUAL INSPECTION
Perform all requirements of 25, 50, 100, 200, 300
hour and any calender inspections due. Replace the
magneto pressurization filter with a new element and
comply with any 500 hour inspections that will come
due before the next regularly scheduled maintenance
event.
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