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2203 Stricklin
| Question | Answer |
|---|---|
| What is the purpose of a power check on a reciprocating engine? | To determine satisfactory performance |
| What will be the likely result if the piston rings gaps happen to align during a pressure compression check on a cylinder? | A worn or defective ring indication. |
| Which of the following would indicate a general weak-engine condition when operated with a fixed-pitch propeller or test club? | Lower than normal static rpm during full throttle operation |
| What is required by 14 cfr part 45 Appendix D when performing an annual/100-hour inspection on a reciprocating engine aircraft? | Cylinder compression check |
| As the pressure is applied during a reciprocating engine compression check using a differential pressure tester, what would a movement of the propeller in the direction of engine rotation indicate? | The piston was positioned past top dead center on the power stroke |
| excessive valve clearance results in the valves opening? | late and closing early |
| A manifold pressure gauge is designed to? | indicate absolute pressure in the intake manifold |
| an engine misses in both the right and left positions of the magneto switch. The quickest method for locating the trouble is to? | Check for one or more cold cylinders |
| A hissing sound from the exhaust stacks during the performance of a compression test indicates? | Exhaust valve blowby |
| If the oil pressure of a cold engine is higher than at normal operating temperatures, the? | The oil system is probably operating normally. |
| If the ignition switch is moved from BOTH to either Left or Right during an engine ground check, Normal operation is usually indicated by? | A slight drop in RPM |
| Direct mechanical push-pull carburetor heat control linkages should normally be adjusted so that the stop located on the diverter valve will be contacted | Before the stop at the control lever is reached in both Hot and Cold positions |
| When will small induction system air leaks have the most noticeable effect on engine performance? | At low RPM |
| One of the best indicators of reciprocating engine combustion chamber problems is? | Sparkplug condition |
| What could cause excessive pressure buildup in the crankcase of a reciprocating engine? | Plugged crankcase breather |
| Excessive valve clearance in a piston engine? | decrease valve overlap |
| if air is heard coming from the crankcase breather or oil fill tube during a differential compression check, what is this an indication of? | Piston ring leakage |
| On a reciprocating engine aircraft using a shrouded exhaust muffler system as a source for cabin heat, the exhaust system should be? | Visually inspected for any detection of cracks or an operational carbon monoxide detection test should be done |
| Which of the following contains a minimum checklist for 100-hour inspections of engines? | 43 appendix D |
| When must an Airworthiness Directive be complied with after it becomes effective? | As specified in the AD |
| Which of the following contains a table that lists the engines to which a given propeller is adaptable? | Propeller type certificate data sheet |
| An indication that the optimum idle mixture has been obtained occurs when the idle mixture is moved to IDLE CUTOFF and manifold pressure? | Decreases and engine RPM increases momentarily before the engine ceases to fire |
| You are performing a 100-hour inspections on a R985-22 aircraft engine. What does the 985 Indicate? | The total piston displacement of the engine |
| Each powerplant installed on an airplane with a standard Airworthiness certificate must have been? | Type certificated |
| When inspecting an aircraft reciprocating engine what document is used to determine if the proper magnetos are installed? | Type certificate Data sheet |
| Which statement relating to Fuel/air ratios is correct? | The mixture that gives the best power is richer than the ratio that gives the best economy |
| Which of the following can inspect and approve an engine major repair for return to service? | Certificated mechanic with an Inspection Authorization |
| A ground incident that results in propeller sudden stoppage would require a crankshaft runout inspection. What publication would be used to obtain crankshaft runout tolerances? | Current manufacturers maintenance instructions |
| Which of the following is a primary engine instrument? | Tachometer |
| a change in engine manifold pressure has a direct effect on the? | Mean affected cylinder pressure |
| The EGT gauge used with reciprocating engines is primarily used to furnish temperature readings in order to? | Obtain the best mixture for engine cooling |
| What will the result of operating an engine in extremely high temperatures using a lubricant recommended by the manufacturer for a much lower temperature? | The oil pressure will be lower than normal |
| Which of the following has the greatest effect on the viscosity of lubricating oil? | Temperature |
| As a general rule, the mixture setting on a reciprocating engine operating at or near takeoff power that provides the best cooling is? | Full rich |
| What unit in an aircraft engine lubrication system is adjusted to maintain the desired system pressure? | Oil pressure relief valve |
| Which of the following determines oil and grease specifications for lubrication of propellers? | Propeller manufacturers |
| Which of the following will be the result of an induction system leak near a cylinder? | Lean mixture indication |
| At any given RPM, a change in power output can be noted by which engine instrument? | Manifold pressure gauge |
| What is the maximum amount of leakage allowed to occur during a differential cylinder pressure check on a Lycoming engine? | 25% |
| Which of the following problems could be detected by a cold cylinder check? | Defective spark plug leads |
| After an engine installations, when adjusting the throttle linkage and other controls, set the control travel to? | slightly exceed the movement of the throttle arm stops |
| Typical engine mounts on a reciprocating engine? | Utilize a rubber shock mount to reduce vibration |
| A characteristic of Dyna-focal engine mounts as applied to aircraft reciprocating engines is that the? | Shock mounts point toward the engine's center of gravity |
| What type of nuts are used to hold exhaust systems to cylinders? | Brass or heat resistant nuts |
| If a radial engine has been shutdown for more than 30 minutes the propeller should be rotated through by hand for at least two revolutions to? | Check for hydraulic lock |
| When performing a magneto timing check the light goes out when? | The points begin to open |
| Generally, when an induction fire occurs during starting of a reciprocating engine, the first course of action should be to? | Continue cranking and start the engine if possible |
| What indication may reciprocating engine exhaust system leaks be detected? | Signs of exhaust soot inside cowling and on adjacent components |
| Which of the following, obtained during a magneto check at 1700 rpm, indicates a short (grounded) circuit between the right magneto primary and the ignition switch? | Both-1700 rpm, R-o RPM, L-1700 rpm, off-0 RPM |
| Which document is used to determine that an engine conforms to its type design? | Engine Type Certificate Data sheet |
| What fire extinguishing agent is commonly used on a reciprocating fire? | Carbon Dioxide |
| When starting an engine with a float-type carburetor, where should the mixture control be placed? | Full Rich |
| What is meant by the term "Liquid Lock"? | Oil has collected in the bottom cylinders |
| What should be done if there is no indication of oil pressure shortly after starting the engine? | The engine must be shutdown and the malfunction is located |
| In the operation of an engine with a constant-speed propeller, What sequences should be followed in changing power settings? | move prop forward then move the throttle |
| When an engine is equipped with a carburetor which has an idle cutoff, what is the procedure for shutting down the engine? | placing idle control to cutoff then cut ignition |
| Why is the mixture leaned out on a reciprocating engine? | For high altitude operation |
| What operating procedures can help reduce lead fouling of the spark plugs? | optimum mixture control or TCP (tricresyl phosphate)1 |
| What is meant by preheating an engine? | forces heated air into engine area to heat lubricants. |
| What should be used to clean an aircraft engine? | emulsion cleaner |
| What inspection should be made with respect to the engine when an oil screen is serviced? | remove accumulation of sludge, and examine for metal particles |
| name 2 types of compression testers utilized on reciprocating engines | Direct, and differential compression testers |
| What is the difference between degreasing and decarbonizing? | Degreasing is removing the loose sludge with a petroleum solvent and a vapor degreaser. Decarbonizing is softening the carbon with a acidic solution. |
| What precautions should be observed with respect to grinding a cylinder which has been hardened by nitriding? | Do not exceed the limit of .010 as you could grind through the hardened metal |
| What is the advantage of a chromium-plated cylinder barrel? | the cylinder will show very little wear between overhauls for 1000's of hours |
| What precautions must be observed with respect to the piston rings used in a chromium plated cylinder barrel? | Cannot use Chromium-plated piston rings |
| If one cylinder needs to be ground to an oversize condition, what should be done to the other cylinders and pistons? | must be done on each cylinder |
| What is a choked cylinder barrel? | cylinder has a slightly smaller diameter at the top of the cylinder |
| What is the purpose of a choked cylinder barrel? | during higher operating temperatures near the top of the cylinder a choke bore provides a straight bore during engine operation |
| What may be done if a crankshaft flange is found to be bent? | straightening of the flange is it is nitrided |
| What is used to check that crankshaft oil passages are free from sludge? | soft copper wire |
| what material is used to absorb moisture inside an engine during storage? | dehydrator plugs |
| The primary purpose in setting proper valve timing and overlap is to? | obtain the best volumetric efficiency and lower cylinder operating temperatures. |
| If the ignition switch is moved from BOTH to either LEFT or RIGHT during an engine ground check, normal operation is usually indicated by a slight | drop in torque meter pressure indication. |
| What type of oil do most engine manufacturers recommend after new reciprocating engine break-in? | Ashless dispersant oil. |
| What are two parts of a distributor in an aircraft engine ignition system? | Block and rotor |
| The primary purpose of baffles and deflectors installed around cylinders of air-cooled aircraft engines is to | force cooling air into close contact with all parts of the cylinders. |
Created by:
Lucas1999