500-Hour Engine Inspection For Io-390-D Series Engines - Lycoming IO-390-D Series Maintenance Manual

8. 500-Hour Engine Inspection for IO-390-D Series Engines

The purpose of this inspection is to examine the magnetos (if installed).
A. Complete the 500-Hour Engine Inspection after every 500 hours of operation since the
engine has been in service.
B. Copy and complete the 500-Hour Engine Inspection Checklist for IO-390-D Series Engines
as a record of engine service. Record the engine hours.
WARNING
500-Hour Engine Inspection Checklist for IO-390-D Series Engines
Engine Model Number___________________
Engine Time:___________________________
Inspection done by:______________________________
Inspection Item
Complete the 100-Hour or
Annual Engine Inspection
Checklist.
Ignition System
Examine the magnetos in
accordance with the magneto
manufacturer's instructions.
05-20
Page 30
BEFORE ANY ENGINE INSPECTION OR SERVICE PROCEDURE,
MAKE SURE THE IGNITION SWITCH IS SET TO OFF AND THAT ALL
POWER TO THE ENGINE IS DISCONNECTED. ENSURE ALL
OBJECTS/PERSONNEL ARE CLEAR OF THE PROPELLER'S
ROTATIONAL ARC. IF POWER IS ON, A LOOSE OR BROKEN WIRE
CAN CAUSE THE ENGINE TO START AND THE PROPELLER TO
TURN WHICH CAN LEAD TO DEATH OR SERIOUS INJURY OR A
PROPELLER STRIKE.
Refer to the section "100-
Hour or Annual Engine
Inspection for IO-390-D
Series Engines" in this
chapter.
If a magneto must be
replaced, refer to the
"Magneto Replacement
Procedure" in Chapter 74-30.
IO-390-D Series Engine Maintenance Manual
IO-390-D Series Engine Maintenance Manual
Engine Serial Number:___________________
Date Inspection Done:____________________
Comments
© 2020 Avco Corporation. All Rights Reserved
Results/Notes
March 2020
Done