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Visual Inspection Checklist for IO-390-D Series Engines
Engine Model Number___________________
Engine Time:___________________________
Inspection done by:______________________________
Item
Engine Compartment
Look for and remove unwanted dirt,
dust, sand, or particles on the engine
and in its compartment.
If the engine has been exposed to
volcanic ash, remove the volcanic
ash and particulate contamination.
Examine all hoses, lines,
connections, wiring, fittings, and
baffles for loose connections and
any damage.
Examine the cowling and baffles for
damage and correct installation
Examine the cowling, engine and its
compartment for evidence of fluid
leaks, residues, or discoloration.
Examine the intercylinder baffles for
damage or looseness.
05-20
Page 10
IO-390-D Series Engine Maintenance Manual
IO-390-D Series Engine Maintenance Manual
Engine Serial Number:___________________
Date Inspection Done:____________________
Comments
Refer to the section
"Volcanic Ash
Removal" in Chapter 05-
30.
Tighten any loose
hardware as per the
Standard Torque Tables
in the latest revision of
the Service Table of
Limits - SSP-1776.
Replace field serviceable
damaged components.
Otherwise, send the
engine to Lycoming
Engines for repair.
Replace damaged
cowling or baffles in
accordance with aircraft
Original Equipment
Manufacturer (OEM)
procedures.
Identify and correct the
cause of any leak,
residue or discoloration.
Replace a damaged or
loose intercylinder
baffle. Refer to the
"Intercylinder Baffle
Removal" procedure in
Chapter 72-30.
© 2020 Avco Corporation. All Rights Reserved
Findings/
Corrective Action
March 2020
Done
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