IO-390-D Series Engine Maintenance Manual
© 2020 Avco Corporation. All Rights Reserved
05-20
March 2020
Page 15
IO-390-D Series Engine Maintenance Manual
Operational Leak Check Sheet for IO-390-D Series Engines
Engine Model Number___________________
Engine Serial Number:___________________
Engine Time:___________________________
Date Inspection Done:____________________
Inspection done by:______________________________
Item
Comments
Findings/
Corrective Action
Done
Examine the cowling, engine and
its compartment for evidence of
fluid leaks, residue, or
discoloration.
Identify and correct the
cause of any leak,
residue, or
discoloration.*
Examine all oil lines for leaks,
wear, and secure attachment. Make
sure that the oil lines are securely
attached to prevent vibration. Make
sure that there are no sharp bends in
the oil line routing and that the oil
lines are not near heat sources that
could damage the oil line.
Identify and correct the
cause of any leak.*
Refer to the “Oil Line
Inspection” procedure in
Chapter 72-50.
Examine all fuel lines for leaks,
wear, and secure attachment. Make
sure that all fuel lines have
serviceable cushioned clamps
securely attached to hold the fuel
lines securely in place to prevent
excessive vibration. Make sure that
there are no sharp bends in the fuel
line routing and that the fuel lines
are not near heat sources that could
damage the fuel line.
Identify and correct the
cause of any leak.*
Refer to the “Fuel Line
Inspection” procedure in
Chapter 73-10.
* For possible causes and corrections, refer to the section “Fault Isolation Guide” in Chapter 12-30.
