FAA certificated mechanics may:
supervise and approve a 100-hour inspection. approve for return to service a minor alteration they have performed appropriate to the rating(s) they hold. approve for return to service a major repair for which they are rated.
(Refer to Figure 1 .) When different rated capacitors are connected in series in a circuit, the total capacitance is:
less than the capacitance of the lowest rated capacitor. equal to the sum of all the capacitances. greater than the capacitance of the highest rated capacitor.
Which alternative answer is equal to 16,300?
1.63 x 10 to the negative third power. 163 x 10 to the negative second power. 1.63 x 10 to the fourth power.
When computing the maximum forward loaded CG of an aircraft, minimum weights, arms, and moments should be used for items of useful load that are located aft of the:
rearward CG limit. datum. forward CG limit.
If the reference datum line is placed at the nose of an airplane rather than at the firewall or some other location aft of the nose,
all measurement arms will be in negative numbers. measurement arms can be either positive or negative numbers depending on the manufacturer's preference. all measurement arms will be in positive numbers.
What type of measurement is used to designate the arm in weight and balance computation?
Distance. Weight. Weight x distance.
When may an otherwise qualified mechanic who does not read, write, speak, and understand the English language be eligible to apply for a mechanic certificate?
When a special authorization has been issued by the supervising FAA Flight Standards District Office. When employed outside the United States by a U.S. air carrier. When employed outside the United States.
The clearance between the piston rings and the ring lands is measured with a:
micrometer caliper. depth gauge. thickness gauge.
A primary cause of intergranular corrosion is:
dissimilar metal contact. improper application of primer. improper heat treatment.
The number 3.47 x 10 to the negative fourth power is equal to:
.00347 34,700 .000347.
(Refer to Figure 91 ) Which of the figures is using scientific notation?
1. 2. both 1 and 2.
Which statement below reflects a typical requirement when towing some aircraft?
Tailwheel aircraft must be towed backwards. Discharge all hydraulic pressure to prevent accidental operation of the nosewheel steering mechanism. If the aircraft has a steerable nosewheel, the torque-link lock should be set to full swivel.
The priming of a fuel injected horizontally opposed engine is accomplished by placing the fuel control lever in the:
AUTO RICH position. IDLE CUTOFF position. FULL RICH position.
Maximum engine life is 900 hours. Recently, 27 engines were removed with an average life of 635.3 hours. What percent of the maximum engine life has been achieved?
71 percent. 72 percent. 73 percent.
Which statement is true regarding the use of FAA Form 337?
FAA Form 337 is authorized for use with both U.S. and foreign registered aircraft. FAA Form 337 is authorized for use with U.S. registered aircraft, and foreign registered aircraft when located in the United States. FAA Form 337 is not authorized for use with other than U.S. registered aircraft.
After a mechanic holding an airframe and powerplant rating completes a 100-hour inspection, what action is required before the aircraft is returned to service?
A mechanic with an inspection authorization must approve the inspection. Make the proper entries in the aircraft's maintenance record. An operational check of all systems.
The useful load of an aircraft is the difference between:
the maximum takeoff weight and basic empty weight. maximum ramp or takeoff weight as applicable, and zero fuel weight. (1) the weight of an aircraft with all seats filled, full baggage/cargo, and full fuel, and (2) aircraft weight with all seats empty, no baggage/cargo, and minimum operating fuel.
An aircraft's LEMAC and TEMAC are defined in terms of distance:
from the datum. from each other. ahead of and behind the wing center of lift, respectively.
What is the ratio of 10 feet to 30 inches?
4:1. 1:3. 3:1.
Which of the following statements is/are generally true regarding the charging of several aircraft batteries together?
1. Batteries of different voltages (but similar capacities) can be connected in series with each other across the charger, and charged using the constant current method.
2. Batteries of different ampere-hour capacity and same voltage can be connected in parallel with each other across the charger, and charged using the constant voltage method.
3. Batteries of the same voltage and same ampere-hour capacity must be connected in series with each other across the charger, and charged using the constant current method.
2 and 3. 3. 1 and 2.
How may magnesium engine parts be cleaned?
Spray with MEK (methyl ethyl ketone). Wash with a commercial solvent, decarbonize, and scrape or grit blast. Soak in a 20 percent caustic soda solution.
In an N-P-N transistor application, the solid state device is turned on when the:
emitter is positive with respect to the base. base is positive with respect to the emitter. base is negative with respect to the emitter.
In order to reconstruct lost or destroyed aircraft maintenance records, what is it necessary to establish?
Dates of all maintenance, preventive maintenance, and alterations. Dates and/or times of all 100-hour, annual, or progressive inspections. Total time-in-service of the airframe.
Which of the following may a certificated airframe and powerplant mechanic perform on aircraft and approve for return to service?
1. a 100-hour inspection.
2. an annual inspection, under specified circumstances.
3. a progressive inspection, under specified circumstances.
1, 2. 1, 2, 3. 1, 3.
Which of the following are acceptable to use when utilizing chemical cleaning and/or depainting agents on aircraft?
1. Synthetic fiber wiping cloths when using a flammable agent.
2. Cotton fiber wiping cloths when using a flammable agent.
3. Atomizing spray equipment.
2 and 3. 2. 1.
Which of the following includes all the regulatory definitions of "maintenance"?
Overhaul, repair, parts replacement, and preservation, and preventive maintenance. Overhaul, repair, parts replacement, preservation, inspection, and preventive maintenance. Overhaul, repair, parts replacement, inspection, and preservation.
A bolt with an X inside a triangle on the head is classified as an:
NAS standard aircraft bolt. AN corrosion resistant steel bolt. NAS close tolerance bolt.
The electrolyte of a nickel cadmium battery is the lowest when the battery is:
in a discharged condition. under a heavy load condition. being charged.
All other things being equal, if an item of useful load located aft of an aircraft's CG is removed, the aircraft's CG change will be:
aft in proportion to the weight of the item and its location in the aircraft. forward in proportion to the weight of the item and its location in the aircraft. forward in proportion to the weight of the item, regardless of its location in the aircraft.
(Refer to Figure 45 .) What type weld is shown at G? Lap. Butt. Joint.
What may be used to check the stem on a poppet-type valve for stretch?
Telescoping gauge. Dial indicator. Micrometer .
Which statement concerning heat and/or temperature is true?
There is an inverse relationship between temperature and heat. Temperature is a measure of the potential energy of the molecules of any substance. Temperature is a measure of the kinetic energy of the molecules of any substance.
A hung start in a jet engine is often caused by:
an excessively rich fuel/air mixture. malfunctions in the ignition system. the starter cutting off too soon.
In most aircraft hydraulic systems, two piece tube connectors consisting of a sleeve and a nut are used when a tubing flare is required. The use of this type connector eliminates:
the possibility of reducing the flare thickness by wiping or ironing during the tightening process. the flaring operation prior to assembly. wrench damage to the tubing during the tightening process.
Which statement(s) is/are true regarding tiedown of small aircraft?
1. Manila (hemp) rope has a tendency to stretch when it gets wet.
2. Nylon or dacron rope is preferred to manila rope.
3. The aircraft should be headed downwind in order to eliminate or minimize wing lift.
4. Leave the nosewheel or tailwheel unlocked.
1, 2, 3, and 4. 2. 1 and 2.
In examining/inspecting and evaluating a welded joint, a mechanic should be familiar with:
likely ambient exposure conditions and intended use of the part, along with type of weld and original part material composition. the welding technique, filler material, and temperature range used. the parts, proportions, and formation of a weld.
(Refer to Figure 46 .) The measurement reading on the illustrated micrometer is: 0.2851. 0.2911. 0.2901.
A specific measured distance from the datum or some other point identified by the manufacturer, to a point in or on the aircraft is called a:
reference number. zone number. station number.
The temperature to which humid air must be cooled at constant pressure to become saturated is called:
absolute humidity. dewpoint. relative humidity.
Which coupling nut should be selected for use with 1/2-inch aluminum oil lines which are to be assembled using flared tube ends and standard AN nuts, sleeves, and fittings?
AN-818-16. AN-818-5. AN-818-8.
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