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Volume 2 Test Ques.
Volume 2 CDC Multiple Choice 2A654
| Question | Answer |
|---|---|
| In the semi-monocoque type of fuselage construction, the longerons | are the strongest members of the fuselage |
| Which major assembly provides the lifting force for an aircraft? | Wings |
| Which assembly includes the aft end of the fuselage of conventionally designed aircraft? | Empennage |
| The directional movement about the axis of an aircraft is controlled by | primary flight controls |
| Low observable (LO) technology allows modern aircraft to avoid | enemy radar |
| The size of a bolt is generally stated in terms of its | diameter, length, and threads per inch |
| Which type of bolt is used where standard-type bolt is impractical? | Stud |
| Which type of screw would most likely be found on fuel systems electrical components? | Roundhead |
| Which is a feature of the hi-lok type of fastener? | Can be installed with hand tools |
| Which type of tubing is used in high-pressure systems such as the landing gear system? | Stainless steel |
| Flexible hose is used in areas of the aircraft | which are subject to great amount of vibration |
| Which type of hose is a medium pressure rubber hose that can be used in a fuel system? | Military specification-hose (MIL-H)–8794 |
| Which type of hose is a Teflon hose with an operating temperature of –65 to 450 degrees Fahrenheit? | MIL-H–27267 |
| Which example is not acceptable regarding the installation of a flexible hose assembly? | Use oil to aid the installation of a self-sealing hose |
| The first step when removing a V-band type coupling is to | cut the safety wire |
| Which part of a Wiggins coupling provides the sealing action when the coupling is torqued? | O-rings |
| Which minimum diameter safety wire should be installed on bolts having a .050-inch drilled hole? | .032-inch |
| Which size cotter pin should be installed in the fastener? | The largest size that will fit |
| During an integral tank inspection, you discover an area where the protective coating is scarred and the metal is discolored. Pitting has also occurred to a depth of one millimeter (0.001 inch). Which degree of corrosion has taken place? | Light |
| When installing removable screws and bolts, which portion is coated with sealant? | Coat the lower side of the heads of screws and bolts with sealant |
| Conversion coating (MIL-C–81706, Class 1A) is used to coat | aluminum tubing after removing corrosion |
| Which types of hammers are used in fuel systems maintenance? | Soft-faced mallets and ball-peen hammers |
| Which are the three most common types of pliers? | Diagonal-cutting, long-nose, and slip-joint |
| Which type of wrench would you use to install a Wiggins coupling? | Spanner |
| Clean extremely greasy and grimy tools with | approved cleaning solvent |
| Which is a feature of a T-handle type torque wrench? | Has a preset torque |
| Which type of attachment should you use on the fuel cell pneumatic buffer to buff bladder cells and flanges? | Buffing stone |
| The ratio of output pressure to input pressure of a two-part sealant high-pressure injection gun is | 1 to 50 |
| When using the sealant-filleting gun what should you do prior to mixing the sealant? | Select your nozzle |
| The one-part sealant injection gun injects sealant into | channels under the wing skin |
| What will an air hose do if you run it over with heavy equipment? | Rupture |
| Under which condition would an air hose be more likely to crack when bent too sharply? | During cold weather |
| Flashlights used inside an aircraft fuel system repair area shall meet which standards? | National Fire Protection Agency (NFPA) 70, Class1, Division 1 |
| Rubber buckets must be emptied after use in order to prevent a | safety or spill hazard |
| When you use the water manometer, | unplug the negative pressure connection when the fuel tank is given a positive test |
| How many seconds should you sample each area of the fuel tank? | 60 |
| The Model T477W bonding meter measures | resistance |
| All values displayed on the T477W bonding meter are in | milliohms |
| Which air compressor provides pneumatic power for the support of aircraft systems? | A/M–32A–95 |
| How often should you empty the explosion proof vacuum? | After each use |
| Which heater is not explosion proof and must be kept outside the repair area? | HDU–43 |
| An equipment item not permitted inside the fuel systems repair area is the | air conditioner |
| Which system installed in your hangar can cure sealant? | Climate control unit |
| Where should you position the fuel cell/tank servicing cart? | Inside the fuel system repair area |
| An equipment item used in support of fuel tank inerting is the | nitrogen cart |
| You have connected a diesel generator to an aircraft in order to supply electrical power to operationally check a boost pump. The unit’s motor and generator have been turned on. What indication do you have that the unit is supplying power to the aircraft? | A light inside the aircraft will illuminate |
| Maintenance stands used specifically for fuel systems maintenance should be equipped with | static discharge plates |
| Which type of toggle switch can complete two individual circuits at the same time? | Double-pole, single-throw |
| While the pins on a cannon plug are lettered for ease of identification, which letters are not used? | I, O, and Q |
| You are using a multimeter to measure voltage in an electrical circuit. During the measurement, the letters “OL” appear on the digital display to indicate that the | circuit voltage is higher than the highest range selected |
| Which type of technical manual would you use to troubleshoot an electrical system problem on a modern-type aircraft? | Fault isolation |
| In a new facility, emergency personnel showers must | have a privacy enclosure |
| As part of a maintenance preparation checklist, ensure all support equipment used in a fuel systems area is | bonded/grounded if required |
| Which equipment in a fuel systems repair facility is used to extract fuel vapors outside the facility during such operations as defueling and air purging? | Exhaust fan |
| All “hot work” performed on an aircraft in a fuel systems repair facility must be approved by the | fire protection services |
| The minimum safe distance between an aircraft using full powered radar and the fuel system repair area is | 300 feet |
| Which type of wheels must be installed on rolling support equipment used in the fuel systems repair area? | Antistatic, nonmetal |
| Who signs the master entry plan and ensures all safety and health requirements are met? | Maintenance group commander |
| During tank entry, the attendant is responsible for | evacuating the tank |
| In the event of an emergency situation during a fuel tank entry, who must sound the alarm and initiate contact with emergency response agencies? | Runner/equipment monitor |
| For what maximum time limit may a master entry plan (MEP) be issued? | One year |
| For what maximum period of time may an entry permit be issued? | One year |
| Which atmospheric condition is considered “entry-safe” in a fuel tank without foam? | 600 parts per million (ppm) |
| When blow purging an aircraft fuel tank, what step should be taken immediately after removing the access door? | Place the duct in the tank opening |
| When performing the task of “exhaust purge,” where on the blower do you attach the ducts? | Inlet side |
| When removing fire suppression foam from an aircraft fuel tank, you should | wear chemical-resistant gloves |
| When performing the task of depuddling, which personal protective equipment should be worn? | Full-faced respirator and chemical-resistant gloves |
| The purpose of the stringers in an integral tank is to | provide attachment points for the skin |
| Which is the first step in performing the leak-detection powder method of leak detection? | Strip exterior seals |
| When performing the torn paper method of leak detection, which gives you a visual indication of a fuel leak? | Fuzzy edge absorbing fuel |
| Which step should be taken first when attempting to locate a leak exit point on or near a common tank boundary? | Defuel the outboard tank |
| Which aircraft fuel-leak location is considered “external”? | Lower wing surface |
| Which step would be a condition 2 fuel leak? | No repair is required |
| You are performing the task of checking an integral tank sealant for adhesion; which of the following is correct? | Apply a maximum of 100 pounds per square inch (psi) air pressure to sealant |
| Which leak-source isolation method requires the least time and is the easiest? | Blow back |
| When should the hollow-bolt dye injector method be used to isolate a leak source in an integral tank? | When the double-cup assembly was unsuccessful |
| Which type of sealant contains beads that swell when contacted by fuel? | Non-curing sealant |
| An advantage of an O-ring-type access door seal is that | they are generally maintenance free |
| At which angle should the end of a fillet seal be cut to prepare for new sealant? | 45 degrees |
| An authorized sealant scraper may be made from | plastic |
| A brush coat of sealant should be applied with | an acid brush |
| How far apart along the sealant groove are non-curing injection holes normally spaced? | 3 to 6 inches |
| When injecting using high pressure injection gun, which step will protect the aircraft structure? | Providing an air escape |
| Which accelerates the curing of sealant? | Apply heat and humidity |
| The initial shelf life of a sealant material has expired. The sealant has been tested and has been found to be serviceable. The shelf life may now be extended | 3 months |
| Which tool should you use to remove a repair done with Hardman epoxy? | Plastic scraper and needle-nose pliers |
| You are applying an aluminum-foil patch bonded with sealant. You should cut the patch to extend how far beyond the fastener? | 1/4 inch |
| The Comp Air D236 Injector Kit method of temporary repair should be used on | flush type fasteners |
| The ply of a self-sealing cell that contains the fuel is the | nylon barrier |
| How many primary layers make up a bladder cell? | Three |
| A combination cell normally has self-sealing sections located | bottom and aft |
| The fuel cell is plasticized prior to storage in order to | prevent cracking and drying |
| Which is the maximum length of time you should allow a self-sealing fuel cell to remain collapsed? | 1 hour |
| Vithane cells which have been in storage for a long time in a dry climate will tend to | shrink |
| Which is the most important factor in isolating a fuel cell leak? | Knowledge of the cavity-drain system |
| Which discrepancy would likely result in a fast and severe type of fuel cell leak? | Loose interconnect fitting |
| Which cell repair is best performed at depot or contractor facilities? | Corner repairs |
| During fuel cell interior inspection you do not find a defect in the cell; what else could cause it to leak? | Bad O-ring |
| Which does not subject the exterior of the fuel cell to damage? | Components |
| Cells up to 1,000 gallons can be pressurized up to | ½ psi |
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Fuels92MXS
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