Table of Contents
Advertisement
4. 50-Hour Engine Inspection
A. The purpose of this inspection is to make sure that the engine operates correctly and agrees
with operational specifications.
B. Complete the 50-Hour Engine Inspection after every 50 hours of engine operation or every 4
months, whichever occurs first.
C. Complete the 50-hour Engine Inspection Checklist for this inspection.
WARNING
NOTICE: Copy the blank checklist and complete the checklist as a record of engine
maintenance. Put the completed checklist in the engine logbook.
Engine Model Number__________________
Date Inspection Done: ________ Inspection done by:______________________________
Aircraft Tachometer:____________________
Inspection Item
Complete the visual
inspection.
Measure the oil level and
calculate the rate of
consumption.
Do an oil change.
05-20
Page 18
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.
50-Hour Engine Inspection Checklist
Comments
Refer to the "Visual Inspection"
section in this chapter.
If the rate of oil consumption is
not within limits repeat the steps
in the 25-Hour Engine
Inspection Checklist.
Refer to the "Oil Change
Procedure" in Chapter 12-10.
Collect an oil sample for
analysis.
If steel, copper or aluminum
particles are found in the oil
filter, examine the engine
cylinders and other metal
components for worn parts or
damage. Refer to the sections
"Engine Wear and Oil Analysis"
and "Guidelines for Results of
Oil Analysis" in Chapter 12-10.
YO-233-B2A Engine Maintenance Manual
TEO-540-A1A Engine Maintenance Manual
Engine Serial Number:______________
Engine Time:_______________________
Results/Notes
© 2021 Avco Corporation. All Rights Reserved
Done
February 2021
Advertisement
Table of Contents
