What indications are given in the event of a leaking or open primer while the engine is running?
Engine will not idle properly.
Cold cylinder is found when troubleshooting a running engine; what does this indicate?
No combustion in that cylinder.
When pulling a propeller through, a hissing sound is heard indicating valve blow by; what procedure should be performed next?
Compression check performed to identify the faulty cylinder.
What is the purpose of performing a compression test?
Determine if the valves, piston and rings are sealing properly.
When an engine is overhauled, how is its total time affected?
Total time on the engine continued, time since major overhaul entered in the engine logbook.
Manufacturer rebuilt engine is granted zero time status and considered to have no previous operating history.
What inspections should be performed after a propeller strike without sudden stoppage?
Inspect engine mounts, crankcase and nose section for damage. Inspect the oil and oil filters/screens for metal particles, inspect crankshaft or driveshaft for cracks and misalignment.
Name some precautions that should be performed prior to engine removal.
Disconnect battery, turn off fuel valves, chock the wheels and install a tail stand.
When inspecting a piston, where are cracks most likely to be found?
Areas highly stressed, the base of the piston bosses, ring lands, inside the junction of the bore and the walls.
What does it mean if an engine part is within serviceable limits?
Part is within the manufacturer’s limits, can be used in an engine, doesn’t require replacement.
What tools or instruments are used to inspect a cylinder barrel for out of roundness?
Dial indicator or an inside micrometer used to measure the top of the cylinder at the skirt; a telescopic gauge and micrometer can also be used. Two readings should be taken 90 degrees to each other.
How can a loose stud in an engine crank case be repaired?
Remove the loose stud and inspect the hole for size and thread condition; may use an oversized stud or helicoil insert.
What publication is used to check an engine for normal operation?
Manufacturer’s maintenance manual.
A weak cylinder is found during a compression check; what must be inspected?
Cylinder walls, pistons.
What purpose does an oil analysis serve?
Metal particles in oil show normal and abnormal wear, helps evaluate the engine’s internal condition.
What inspections should be performed on an engine that has been in storage?
Perform inspection to determine if there is any corrosion damage.
Where would a carburetor air temperature bulb be located?
Ram air intake duct.
What is the fuel pressure range on a float type carburetor?
3 to 5 psi.
Name the basic components of a fuel indicator system.
Transmitter and the indicator.
What unit of measure is generally used to indicate fuel flow?
Pounds or gallons per hour.
Why is fuel flow monitored?
Determine the fuel consumption and engine performance.
What does the manifold gauge indicate and how is it calibrated?
Absolute pressure in engine manifold, calibrated in inches of mercury.
What directly controls manifold pressure?
Throttle opening and engine RPM.
During engine operation, where should the propeller control be set when checking the manifold pressure?
Low pitch high RPM.
Is the aircraft electrical system required to power a cylinder head temperature gauge?
No, thermocouple is used as the electrical source.
-
Reciprocating Engines10
-
Recip Engines Operation Instruments, Maintenance And Overhaul27
-
Turbine Engines23
-
Turbine Operation Instruments/maint Overhaul11
-
Induction Systems22
-
Exhaust Systems22
-
Engine Fuel And Metering37
-
Electrical Start And Ignition Systems37
-
Lubrication Systems21
-
Cooling Systems14
-
Propellers22
-
Powerplant And Propeller Airworthiness Inspections10
-
Powerplamt Troubleshooting2
