FINAL Flashcards
1
Q
Which of the following methods is used to straighten a bent aluminum propeller blade that is within repairable limits?
A
C- Cold Straightening only
2
Q
What is the result of moving the throttle on a reciprocating engine when the propeller is in the constant-speed range with the engine developing cruise power?
A
A- Opening the throttle will cause an increase in blade angle
3
Q
The primary purpose of a feathering propeller is to
A
C- Eliminate the drag created by a windmilling propeller when an engine fails in flight
4
Q
The centrifugal twisting force acting on a propeller blade is
A
C- Greater than the aerodynamic twisting force
5
Q
What method would be used to inspect an aluminum propeller blade when a crack is suspected?
A
C-Dye-penetrant
6
Q
Cold straightening a bent aluminum propeller blade may be accomplished by
A
B- An appropriately rated station or the manufacture
7
Q
When preparing a propeller blade for inspection it should be cleaned with
A
A- Mild soap and water
8
Q
When preparing a propeller blade for inspection it should be cleaned with
A
Mild Soap and Water
9
Q
If a flanged propeller shaft has dowel pins
A
B- The Propeller can only be installed in a given position
10
Q
Which of the following forces or combination of forces operates to move the blades of a constant-speed counterweight-type propeller to the HIGH PITCH position?
A
B- Centrifugal force acting on the counterweights
11
Q
The breaking loose of small pieces of metal from coated surfaces, usually caused by defective plating or excessive loads, is called
A
A- flaking
12
Q
When running-up an engine and testing a newly installed hydromatic propeller, it is necessary to exercise the propeller by moving the governor control through its entire travel several times to
A
B- Free the dome of any entrapped air
13
Q
Which of the following is used to monitor the mechanical integrity of the turbines, as well as to check engine operating conditions of a turbine engine?
A
B- Exhaust gas temprature
14
Q
The purpose of permanently sealing and partially filling some models of McCauley propeller hubs with dyed oil is to
A
C- Make the location of cracks readily
15
Q
The holding coil on a hydromatic propeller feathering button switch holds a solenoid relay closed that applies power to the propeller
A
C- Feathering pump motor
16
Q
Which of the following generally renders an aluminum alloy propeller unrepairable?
A
C- Transverse cracks of any size
17
Q
Repairs of aluminum alloy adjustable pitch propellers are not permitted to be made on which of the following propeller blade areas?
A
A- Shank
18
Q
What action takes place when the cockpit control lever for a hydromatic, constant-speed propeller is actuated?
A
A- Compression of the speeder spring is changed
19
Q
Minor surface damage located in a repairable area, but not on the leading or trailing edges of aluminum blades, may be repaired by first
A
A- Filing with a riffle file
20
Q
The blade angle of a fixed-pitch propeller
A
B- is smallest at the tip
21
Q
Removal of propeller blade tips within Type Certificate Data Sheet limits when correcting a defect is
A
B- A Major Repair
22
Q
How is the speed of a constant-speed propeller changed in flight?
A
C- by changing the load tension against the flyweights in the governor.
23
Q
The thrust produced by a rotating propeller is a result of
A
B- An area of decreased pressure immediately in front of the propeller blades.
24
Q
Propeller blade angle is the angle between the
A
C- Chord of the blade and the rotational plane of the propeller.
25
Which of the following best describes the blade movement of a feathering propeller that is in the HIGH RPM position when the feathering action is begun?
C- Low pitch through high pitch to feather position
26
What operational force causes propeller blade tips to lag in the opposite direction of rotation?
C- Torque- bending force
27
Which of the following contains approved data for performing a major repair to an aircraft engine?
C- Manufacture's maintenance instructions when FAA approved.
28
(1) Airworthiness Directives are Federal Aviation Regulations and must be complied with unless specific exemption is granted.
(2) Airworthiness Directives of an emergency nature may require immediate compliance upon receipt.
Regarding the above statements,
C- Both No. 1 And No. 2 are true
29
When engine power is increased, the constant-speed propeller tries to function so that it will
C- Maintain the RPM, Increase the Blade angle, and maintain a low angle of attack
30
A constant-speed propeller provides maximum efficiency by
B- Adjusting blade angle for most conditions encountered in flight.
31
What is the basic purpose of the three small holes (No. 60 drill) in the tipping of wood propeller blades?
C- To allow the moisture which may collect between the tipping and the wood to escape (vent the tipping).
32
For takeoff, a constant-speed propeller is normally set in the
C- LOW PITCH, high RPM position.
33
When must an Airworthiness Directive (AD) be complied with after it becomes effective?
A- As Specified in the AD
34
How can a steel propeller hub be tested for cracks?
B- By magnetic particle inspection.
35
Which of the following defects is cause for rejection of wood propellers?
B- An oversize hub or bolt hole, or elongated boltholes
36
What unit in the propeller anti-icing system controls the output of the pump?
B- Rheostat
37
On most reciprocating multiengine aircraft, automatic propeller synchronization is accomplished through the actuation of the
B- Propeller governors
38
Grease used in aircraft propellers reduces the frictional resistance of moving parts and is easily molded into any form under pressure. This statement defines
A- Antifriction and plasticity characteristics of grease.
39
On a reciprocating engine aircraft using a shrouded exhaust muffler system as a source for cabin heat, the exhaust system should be
A- Visually inspected for any indication of cracks or operational carbon monoxide detection test should be done.
40
What is a function of the automatic propeller synchronizing system on multiengine aircraft?
B- To control engine RPM and reduce vibration
41
Which of the following component inspections is to be accomplished on a 100-hour inspection?
B- Check cylinder compression.
42
What section in the instructions for continued airworthiness is FAA approved?
C- Airworthiness limitations section.
43
The primary purpose of a propeller is to
B- Change engine horsepower to thrust.
44
Constant- speed non- feathering McCauley, Hartzell, and other propellers of similar design without counterweights increase pitch angle using
A- Oil pressure
45
Each powerplant installed on an airplane with a Standard Airworthiness Certificate must have been
A- Type Certificated
46
If propeller cones or hub cone seats show evidence of galling and wear, the most likely cause is
B- The propeller retaining nut was not tight enough during previous operation.
47
What operational force tends to bend the propeller blades forward at the tip?
C- Thrust-bending force
48
The pitch-changing mechanism of the hydromatic propeller is lubricated by
A- Pitch-changing oil.
49
Which of the following is identified as the cambered or curved side of a propeller blade, corresponding to the upper surface of a wing airfoil section?
A- Blade Back
50
Geometric pitch of a propeller is defined as the
B- Effective pitch plus slippage
51
One of the advantages of inspecting an aluminum propeller utilizing dye-penetrant inspection procedure is that
B- It shows whether visible lines and other marks are actually cracks rather than scratches.
52
A Cessna 180 aircraft has a McCauley propeller Model No. 2A34C50/90A. The propeller is severely damaged in a ground accident, and this model propeller is not available for replacement. Which of the following should be used to find an approved alternate replacement?
B- Aircraft Specifications / Type Certificate data sheets.
53
Indentations on bearing races caused by high static loads are known as
B- Brinelling
54
You are performing a 100-hour inspection on an R985-22 aircraft engine. What does the '985' indicate?
A- The total piston displacement of the engine.
55
What maintenance record(s) is/are required following a major repair of an aircraft engine?
B- Entries in the engine maintenance record and FAA Form 337.
56
Propeller blade station numbers increase from
A- Hub Center line to tip
57
How does the propeller overspeed governor on a turboprop engine decrease propeller RPM?
B- As oil pressure increases, the servo piston is pushed forward, and the feather spring is compressed.
58
Generally, unless otherwise specified by the manufacturer, repairs of nicks, scratches, gouges, etc. on aluminum propeller blades must be made
A- Parallel to the length of the blade.
59
Propeller blade stations are measured from the
B- Hub centerline
60
What are the rotational speed and blade pitch angle requirements of a constant-speed propeller during takeoff?
B- High- speed and low- pitch angle.
61
A ground incident that results in propeller sudden stoppage would require a crankshaft runout inspection. What publication would be used to obtain crankshaft runout tolerance?
A- Current Manufacturer's maintenance instructions.
62
When inspecting an aircraft reciprocating engine what document is used to determine if the proper magnetos are installed?
C- Aircraft Engine Specifications or Type Certificate Data Sheets.
63
Which of the following determines oil and grease specifications for lubrication of propellers?
C- Propeller manufacturer's instructions.
64
Blade angle is an angle formed by a line perpendicular to the crankshaft and a line formed by the
B- Chord of the Blade.
65
The actual distance a propeller moves forward through the air during one revolution is known as the
A- Effective Pitch.
66
(1) Serviceability limits for turbine blades are much more stringent than are those for turbine nozzle vanes.
(2) A limited number of small nicks and dents can usually be permitted in any area of a turbine blade.
Regarding the above statements,
C- Only No. 1 is true.
67
The primary purpose of the front and rear cones for propellers that are installed on splined shafts is to
A- Position the propeller hun on the splined shaft.
68
Propeller blade tracking is the process of determining
C- The Positions of the tips of the propeller blades relative to each other
69
During which of the following conditions of flight will the blade pitch angle of a constant-speed propeller be the greatest?
C- High- Speed, High-altitude cruising flight
70
Why is a constant-speed counterweight propeller normally placed in full HIGH PITCH position before the engine is stopped?
A- to prevent exposure and corrosion of the pitch changing mechanism.
71
The airworthiness standards for the issue of type certificates for small airplanes with nine or less passenger seats in the normal, utility, and acrobatic categories may be found in the
A- Federal Aviation Regulations, Part 23.
72
The low pitch stop on a constant-speed propeller is usually set so that
A- the Engine will turn at its rated takeoff RPM at sea level when the throttle is opened to allowable takeoff manifold pressure.
73
The aerodynamic force acting on a rotating propeller blade operating at a normal pitch angle tends to
B- increase the pitch angle
74
When lubricating a Hartzell propeller blade with grease, to prevent damage to the blade seals, the service manual may recommend on some models to
C- Remove on of the two zerk fittings for the blade and grease the blade through the remaining fittings
75
Which of the following best describes the blade movement of a propeller that is in the high RPM position when reversing action is begun?
A- Low pitch directly to reserve pitch
76
What controls the constant-speed range of a constant-speed propeller?
C- The mechanical limits in the propeller pitch range.
77
What will happen to the propeller blade angle and the engine RPM if the tension on the propeller governor control spring (speeder spring) is increased?
C- blade angle will decrease and RPM will increase
78
Which of the following statements about constant-speed counterweight propellers is also true when referring to two-position counterweight propellers?
A- Blade angle changes are accomplished by the use of two forces, one hydraulic and the other centrifugal.
79
What operational force causes the greatest stress on a propeller?
B- Centrifugal force
80
Longitudinal (fore and aft) clearance of constant-speed propeller blades or cuffs must be at least 1/2 inch (12.7 mm) between propeller parts and stationary parts of the aircraft. This clearance is with the propeller blades
B- Feathered or in the most critical pitch configuration.
81
Which of the following defects is cause for rejection of wood propellers?
B- Bonding or separation of the trailing edge of the propeller blade.
82
The angle-of-attack of a rotating propeller blade is measured between the blade chord or face and which of the following?
C- Relative Airstream.
83
When the centrifugal force acting on the propeller governor flyweights overcomes the tension on the speeder spring, a propeller is in what speed condition?
C- Overspeed
84
The centrifugal twisting moment of an operating propeller tends to
B- Reduce the pitch angle.
85
The propeller governor controls the
A- Oil to and from the pitch changing mechanism.
86
After proper removal of aluminum blade damage, the affected surface should be polished with
B- Very fine sandpaper pr crocus cloth.
87
Surface treatment to counter the effects of dye-penetrant inspection on a propeller is accomplished by
A- Washing off with solvent.
88
What is the primary purpose of the metal tipping which covers the blade tips and extends along the leading edge of each wood propeller blade?
B- to prevent impact damage to the tip and leading edge of the blade.
89
How is anti-icing fluid ejected from the slinger ring on a propeller?
C- By Centrifugal force.
90
A powerplant using a hydraulically controlled constant-speed propeller is operating within the propeller's constant-speed range at a fixed throttle setting. If the tension of the propeller governor control spring (speeder spring) is reduced by movement of the cockpit propeller control, the propeller blade angle will
A- Increase, engine manifold pressure will increase, and engine RPM will decrease.
91
Which of the following conditions is usually not acceptable to any extent in turbine blades?
A- Cracks
92
Ice formation on a propeller blade will
A- Produce unbalance and vibration.
93
A severe condition of chafing or fretting in which a transfer of metal from one part to another occurs is called
C- Galling.
94
Which of the following contains a minimum checklist for 100-hour inspections of engines?
B- 14 CFR Part 443 Appendix D.
95
Proper operation of electric deicing boots on individual propeller blades may best be determined by
A- Feeling the sequence of boot heating and have an assistant observe the loadmeter indications.
96
Select the Airworthiness Directive applicability statement which applies to an IVO-355 engine, serial number T8164, with 2,100 hours' total time and 300 hours since rebuilding.
A- Applies to all IVO-335 Engines, serial numbers T8000 through T8300, having less than 2,400 Hours' total time.
97
Oil leakage around the rear cone of a hydromatic propeller usually indicates a defective
B- Spider-shaft oil seal
98
Inspection of propeller blades by dye-penetrant inspection is accomplished to detect
A- Fatigue failure
99
How is aircraft electrical power for propeller deicer systems transferred from the engine to the propeller hub assembly?
B- By slip rings and brushes
100
The propeller blade angle is defined as the acute angle between the airfoil section chord line (at the blade reference station) and which of the following?
A- the plane of rotation
101
During engine operation at speeds lower than those for which the constant-speed propeller control can govern in the INCREASE RPM position, the propeller will
C- Remain in the full LOW PITCH position
102
Where are the high and low pitch stops of a Hamilton Standard constant-speed or two-position counterweight propeller located?
B- In the counterweight assembly.
103
(1) During takeoff, propeller thrust (pull) is greatest if the blade angle of attack is low and the engine power setting is high.
(2) With the aircraft stationary, propeller thrust is greatest if the blade angle of attack is high and the engine power setting is high.
Regarding the above statements,
A- Only No. 1 is true.
104
How is a propeller controlled in a large aircraft with a turboprop installation?
C- by the engine power lever
105
A fixed-pitch wooden propeller that has been properly installed and the attachment bolts properly torqued exceeds the out-of-track allowance by 1/16 inch. The excessive out-of-track condition may be corrected by
Placing shims between the inner flange and the propeller.
106
During the on-speed condition of a propeller, the
C- Centrifugal force of the governor flyweights is equal to the speeder spring force.
107
If a blade of a particular metal propeller is shortened because of damage to the tip, the remaining blade(s) must be
C- Reduced to conform with the shortened blade.
108
Why is the pulley stop screw on a propeller governor adjustable?
A- to limit the maximum engine speed during takeoff.
109
How is the flow range of the fuel discharge nozzles installed in a fuel injected reciprocating engine indicated?
A- By a letter stamped on the hex of the nozzle body.
110
An aircraft's propeller system beta range
A- is used to produce zero or negative thrust.
111
An aircraft's propeller system beta range
C- port governor oil pressure from the cylinder of the propeller.
112
What is indicated when the front cone bottoms while installing a propeller?
C- Rear cone should be moved forward.
113
In what position is the constant-speed propeller control placed to check the magnetos?
C- Full increase, low propeller blade pitch angle.
114
Propellers exposed to salt spray should be flushed with
B- Fresh water.
115
The primary purpose of a cuff on a propeller is to
C- increase the flow of cooling air to the engine nacelle.
116
Straightening nitrided crankshafts is
B- Not recommended
117
(1) A mechanic certificate with a powerplant rating authorizes the holder to repair deep scars, nicks, and dents on aluminum propeller blades.
(2) A mechanic certificate with a powerplant rating authorizes the holder to perform minor straightening of steel propeller blades.
Regarding the above statements,
C- Neither No.1 nor No. 2 is true
118
Maximum taper contact between crankshaft and propeller hub is determined by using
A- Bearing blue color transfer
119
What operational force tends to increase propeller blade angle?
B- Aerodynamic twisting force.
120
Which of the following functions requires the use of a propeller blade station?
A- Measuring Blade angle
121
The purpose of a three-way propeller valve is to
A- Direct oil from the engine oil system to the propeller cylinder.
122
Which of the following occurs to cause front cone bottoming during propeller installation?
C- The front cone contacts the ends of the shaft splines, preventing the front and rear cones from being tightened against the cone seats in the propeller hub.
123
Which of the following contains a table that lists the engines to which a given propeller is adaptable?
B- Propeller Type Certificate Data Sheets.
124
Where would one find type design information for an R1830-92 engine certificated under the Civil Air Regulations (CAR) and installed on a DC-3?
B- The Aircraft Engine Specifications.
125
Which of the following is used to correct horizontal unbalance of a wood propeller?
C- Solder
126
Counterweights on constant-speed propellers are generally used to aid in
A- Increasing blade angle
127
What publication contains the mandatory replacement time for parts of a turbine engine?
A- Engine Manufacturer's Service instructions.
128
Propeller fluid anti-icing systems generally use which of the following?
B- Isopropyl Alcohol.
129
The application of more protective coating on one blade than the other when refinishing a wood propeller
C- May be necessary to achieve final balancing.
130
When lubricating a newly overhauled steel hub propeller, you should lubricate the propeller
C- After one to two hours of operation.
131
How is the oil pressure delivery on a hydromatic propeller normally stopped after the blades have reached their full-feathered position?
B- Electric cutout pressure switch.
132
A propeller synchrophasing system allows a pilot to reduce noise and vibration by
A- Adjusting the phase angle between the propellers on an aircraft's engines.
133
Which of the following can inspect and approve an engine major repair for return to service?
C- Certificated mechanic with inspection authorization.
134
Apparent engine roughness is often a result of propeller unbalance. The effect of an unbalanced propeller will usually be
C- Greater at High RPM
135
What is the purpose of an arbor used in balancing a propeller?
A- To Support the propeller on the balance knives.
136
Which of the following best describes the blade movement of a full-feathering, constant-speed propeller that is in the LOW RPM position when the feathering action is begun?
B- High pitch directly to feather position.
137
How does the aerodynamic twisting force affect operating propeller blades?
A- It tends to turn the blades to a high blade angle.
138
What type of imbalance will cause a two-blade propeller to have a persistent tendency to come to rest in a horizontal position (with the blades parallel to the ground) while being checked on a propeller balancing beam?
A- Vertical
139
Most engine-propeller combinations have one or more critical ranges within which continuous operation is not permitted. Critical ranges are established to avoid
A- Severe propeller vibration.
140
What normally prevents a Hartzell Compact propeller from going to feather when the engine is shut down on the ground?
B- A latch mechanism composed of springs and lock pins
141
Determine which portion of the AD is applicable for Model O-690 series engine, serial No. 5863-40 with 283 hours' time in service.
This is the compliance portion of an FAA Airworthiness Directive.
Compliance required as indicated:
(A) For model O-690 series engines, serial Nos. 101-40 through 5264-40 and IO-690 series engines, serial Nos. 101-48 through 423-48, compliance
A- (B), (1).
142
Propeller aerodynamic (thrust) imbalance can be largely eliminated by
A- Correct blade contouring and angle settings.
143
During operational check of an aircraft using hydromatic full-feathering propellers, the following observations are made:
The feather button, after being pushed, remains depressed until the feather cycle is complete, then opens.
When unfeathering, it is necessary to manually hold the button down until unfeathering is accomplished.
A- Both feather cycle and unfeather cycle are functioning properly.
144
What publication is used for guidance to determine whether a powerplant repair is major or minor?
B- 14 CFR Part 43.
145
What actuates the pilot valve in the governor of a constant-speed propeller?
B- Governor Flyweights.
146
The primary reason for careful inspection and prompt repairing of minor surface defects such as scratches, nicks, gouges, etc. on aluminum alloy propellers is to prevent
C- Fatigue failure.
147
Which of the following statements concerning the installation of a new fixed-pitch wood propeller is true?
C- Inspect the bolts for proper torque after the first flight and after the first 25 hours of flying.
148
It is important that nicks in aluminum alloy propeller blades be repaired as soon as possible in order to
B- Eliminate stress concentration points.
