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ASM Block 4
| Question | Answer |
|---|---|
| Who is allowed to write up discrepancies? | aircrew and acft maintainers |
| Who will sign off a red / and what block will it be in? | the person who performed the mx and in the corrected block |
| who will sign off a red -- and what block will be signed? | the person who inspected the discrepancy and in the inspected by block |
| How do you correct a symbol entered in error? | Write: Symbol entered in error and the correct symbol entered or NDN |
| Who is allowed to clear a red X? | The 3 or 5 lvl who performed the mx and the 7 lvl NCO who inspected it. |
| What symbol must never be entered in the AFTO Form 781k? | Red X |
| What does the line through the entry denote on the 781A? | Cleared Discrepancy |
| Who fills out the top line of the AFTO Form 781K? | Acft dedicated crew chief. |
| Where is AFTO Form 781K found in the binder? | In the back of the ACFT Binder. |
| In what section of AFTO Form 781K are DDs annotated? | Section D. |
| What is the purpose of the AFTO Form 244? | Document shop equipment or ground equipment mx/insp/discrepancies |
| What symbols may be entered in the 244? | The same as those in AFTO 781 series |
| What parts of AFTO Form 244 do you annotate discrepancies? | Part 5 |
| What parts of AFTO Form 244 do you annotate non- inspections? | Part 3 |
| What parts of AFTO Form 244 do you annotate Item ID? | Part 1 |
| What parts of AFTO Form 244 do you annotate Supervisory Review? | Part 4 |
| What parts of AFTO Form 244 do you annotate non-scheduled inspections? | Part 2 |
| In what general TO series would you find shop equipment? | 34-1-3 |
| Who may sign off a red x in a 244 Form? | only the person authorized |
| What is the purpose of stop drilling? | To stop crack progression |
| What does stop drilling provide? | means of stress relief and contains the crack |
| what does NDI do in the process to stop drilling? | perform fluorescent penetrant insp to find the ends of the crack |
| How do you prepare the crack surface for NDI? | use chemical pain stipper and a non metaillic scraper. |
| What TO has the crack limitations? | -3 |
| What diameter may the drill bits range? | 3/32 to 1/4 (#30/1/8 drill bit is used for .040 thickness or less) |
| If the crack has not been contained how much can the hold be enlarged? | 1/16th increments. |
| What is Hazardous material (HAZMAT)? | any material that is considered a physical or health hazard |
| who ensures that you get the proper training for handling HAZMAT? | Supervisors |
| Why do you need to know where MSDS's/SDS's are kept? | to help protect yourself |
| What agency must authorize new hazardous materials for shop use? | Base hospitals "bio-environmental engineering" |
| What standard covers all the information for flammable and combustible liquids? | 91-203 |
| Flammable and combustible fluids each ignite at what temps? | 100 degrees |
| Is it safe to store water-reactive materials alongside with flammable or combustible liquids? | no, because water reactive materials have a different fire prevention than flammables/combustibles and if water is used to put out flammables/combustibles they will ignite the water reactive materials. |
| Safety Containers used for transporting or dispensing will be no larger than how many US Gallons? | 5 |
| Why are plastic transport containers used whenever possible? | to prevent accidental glass breakage, metal contamination, or corrosion |
| Why should HAZMAT containers be opened slowly? | to prevent static discharge gas pressure release. |
| How much HAZMAT should you dispense for on job and why? | Exactly what you need to prevent wasted money, materials, and resources and prevents large scale HAZMAT spills |
| All HAZMAT storage containers must be properly labeled IAW? | 91-203 |
| What are 3 common HAZMAT signal words and their corresponding levels of toxicity? | Caution-Slightly toxic, Warning-Moderately toxic, Danger-Highly toxic CWD, SMH |
| What should be done to storage rooms to prevent unauthorized entry or removal of HAZMAT? | completely closed and lock |
| How far should flames or smoking be from combustible or flammable liquids? | 50ft |
| What types of items can be found inside a HAZMAT spill kit? | safety goggles, face shields, rubber gloves, coveralls, absorbent towels |
| How far will at least one portable fire extinguisher will be posted no closer and no further from HAZMAT? | 10 ft closer and 50ft further |
| What is the minimum distance wide for aisles in a HAZMAT storage room? | 3ft |
| Containers will be kept how far off the ground in HAZMAT storage rooms? | 2 inches |
| How far from a sprinkler will HAZMAT stored (stacked)? | 3ft |
| Cabinets will be labeled with? | Flammable keep fire away |
| Refrigerators will be labeled with? | Approved for Flammable liquid storage/ no food or drinks allowed |
| Storage cabinets for HAZMAT are rated for? | limits 350 degrees internal temp when subjected for a 10 min fire test. |
| What federal agency helps to ensure that the proper methods and means are used to dispose of hazardous materials? | EPA |
| What word usually accompanies the signal word Danger | Highly Toxic |
| What is shelf life? | Any item possessing deteriorative or unstable characteristics to the degree that a storage length period must be assigned (anything with an expiration date) |
| How much can a type II shelf life item be extended if it tested good? | half the life |
| What does first in/ first out mean? | use the oldest shelf life items first |
| what is the difference between type I and II shelf life? | Type I is only good for the expiration date and Type II can be extended. |
| When you are conducting a shelf life test for a sealant, why should you conduct working time test? | so it's proven to work per manufacturer's specs |
| Materials with the ________ manufacture and/or shelf life date will be used first | oldest. |
| Chemicals "should/should not" be ordered in quantities and intervals so they can be used before expiration dates. | should not |
| What AFI is used for Labeling? | 91-203 |
| What are 3 parts of an atom? | Electron, proton, nuetron |
| What part of an atom carries a positive charge? | Proton |
| What part of an atom carries a negative charge? | electron |
| What part of an atom carries a neutral charge? | Neutron |
| What is an Ion? | an atom or group of atoms bound together either neg or pos charged. |
| What are four components of an electrochemical cell?/What is needed for corrosion to occur? | Anode, Cathode, Metal path, Electrolyte |
| In an electrochemical cell, what component can we control? | electrolyte |
| Where does corrosion start? | on the surface |
| Once corrosion has started to form, how can we stop the corrosion from continuing? | removed every trace of it. |
| What is corrosion? | deterioration of metal by electrochemical reaction to its environment |
| What cannot be broken down? | Element |
| What is the weaker of the electrochemical cell and corrodes easily? | anode |
| What is the stronger of the electrochemical cell and causes the anode to corrode? | cathode |
| What part of the electrochemical cell transfers electrons? | metal path |
| What determines the strength of the electrolyte? | the amount of ions |
| What metals form an invisible oxide film that protects or slows the rate of corrosion and acts as a barrier or neutral passivation? | stainless steel and titanium |
| what metal has a greenish oxide film that slows the rate of corrosion? | copper |
| Alloyed metals are made up of small crystalline regions called? | grains |
| Metals listed at the top of the galvanic series chart are considered to be? | Anodic |
| Metals listed at the bottom of the galvanic series chart are considered to be? | Cathodic |
| Metals listed further away from each other on the galvanic series chart? | Corrode faster |
| A dissimilar metal combination can cause what type of corrosion? | galvanic |
| Higher temps tend to _______ the rate of corrosion? | increase |
| What will decrease the rate of corrosion on stainless steel, titanium, and copper? | oxide film |
| When living organisms grow, what do they secrete and what type of corrosion is this? | secret corrosive waste and it is oxygen concentration corrosion |
| If quenching of alloyed metals is delayed after heat treatment, what happens to the grains in the metal? | intergranular corrosion |
| What are the parts of the PH (Potential of Hydrogen) chart? | 0-6.9 acidic, 7 neutral, 7.1-14 Alkaline |
| What type of corrosion is first seen as a general dulling of the surface? | Uniform surface corrosion |
| What type of corrosion is commonly found on the aluminum and magnesium and if found under white of gray powdery deposits? | pitting |
| What type of corrosion occurs on an aluminum panel with steel fasteners? | galvanic |
| When the grains of metal become enlarged because of improper heat treatment, the grain boundary will be _______and the inside of the grain will be ________. | boundary will be anodic, grain will be cathodic |
| What type of corrosion is very dangerous because it can go undetected to the human eye> | intergranular |
| What is the advanced stage of intergranular corrosion known as? | exfoliation corrosion |
| Why is stress cracking so dangerous? | may fail at normal loads |
| What causes concentration cell/crevice corrosion? | when an electrolyte is trapped inside a gap, crevice, under a repair patch, or between two overlapping parts. |
| What are the three general types of concentration cell/crevice corrosion? | metal ion corrosion, oxygen concentration, active passive cell |
| What type of corrosion occurs when there is a break in the organic coating and results in worm-like traces under the coating? | fill form |
| What type of corrosion is caused by a combination of surface wear and corrosion? | Fretting |
| What type of stress is involved in stress corrosion cracking? | Tensile stress |
| What are two stages of fatigue corrosion? | pitting and crack formation |
| What type of corrosion is caused by grain separation (delamination)? | exfoliation |
| What type of stress does corrosion fatigue undergo? | cyclic |
| Where does corrosion fatigue start from? | a pit |
| What type of cell/crevice corrosion is metal to metal? | metal ion |
| What type of cell/crevice corrosion has a foreign substance? | Oxygen concentration |
| What type of corrosion is caused by exposure of the oxide/passive film? | Active Passive cell |
| Where on the surface does fill form corrosion start? | breaks in the coating |
| What type of corrosion has an appearance of galling/chaffing? | Fretting |
| What is the corrosion TO? | 1-1-691 |
| What TO contains information about CPCs? | 1-1-691 |
| What is the difference between operational and non-operational types of preservations? | operational is day to day and non-operational is long term. |
| What is the normal thickness of water displacing CPCs? | .001 or less |
| What can you use non-water displacing CPCs? | After the metal surface has been treated with water displacement CPC and is dry. |
| A non-water CPC may be used on dry surfaces previously treated with a ? | Water displacement CPC |
| What are the two types of preservations? | Operational and non-operational |
| When do you not use CPCs? | when there is liquid oxygen present, high heat areas, or fuel tanks |
| What preservation uses a thinner lightweight CPC? | Operational |
| What preservation has a prolonged inactivity? | Non-operational |
| What are the two types of CPCs? | Water displacement and Non-water displacement |
| How can you apply CPCs? | spraying, brushing, or dipping |
| What type of application of CPC has a thin coat? | spraying |
| What type of application of CPC has thicker bodied CPCs? | brushing |
| What type of application of CPC has thicker bodied CPCs and is for smaller parts? | Dipping |
| What are the advantages of cables? | Flexible, strong, failure never abrupt, installed over long distances, easy to replace and repair. |
| What is the disadvantages of internal corrosion on cables? | Cable must be replaced |
| Which TO must be consulted before substituting cables? | 1-1A-8 |
| How many wires are in each strand of a 7x19 cable? | 7 |
| If a critical measurement is required to measure cable diameter a ______ should be used. | micrometer |
| What should you never use when inspecting cables? | bare hands |
| What should you never use to clean installed cables? | metallic wools or solvents |
| When can a turnbuckle be used to repair a cable assembly? | if 1-1A-8 authorizes it |
| The straight connector cannot be paired with what types of fittings? | pin eye or fork type |
| The double shank is used for what type of applications? | that require movement in more than one direction |
| What must match when using the hand operated cable-swaging machine? | dye and terminal |
| When using the pneumatic cable swager what must be done prior to changing the dies? | disconnect air supply |
| What amount of time should a cable fitting be tested? | 3 min |
| The vise jaws have a _____ insert to grab the cable during testing. | softer copper insert |
| What percentage of a cable's min breaking point is tested on a Pull Tester? | 60% |
| What type of hardware are used for cables ? | Turnbuckles, pin eye/terminals (threaded, sleeve, ball type) |
| What tools are used in cutting cables? | hand operated, diagonal cutters, pneumatic (cable swag w/ dies), cold chisel w/ hammer |
| What operation is performed when using flareless (MS) fittings to obtain a seal between the tube and the fitting? | presetting |
| Damage evaluation limits for aircraft tubing assemblies are found in what TO? | 42E-1-1 |
| What are the advantages to MS flareless fittings? | portable, simple to use, uses stainless and 6061-T6 tubings for high pressure. |
| What preset tool may be used only once? | Aluminium |
| How many times can a steel preset tool be used? | 5 times |
| What parts are needed for the MS Flareless fittings? | Tubing, sleeve, nut, preset tool, adjustable wrench |
| What is the max length wise movement of the sleeve? | 1/64th |
| Can the sleeve on the MS flareless fitting rotate? | yes |
| What TO is used for information about MS Flareless fittings? | 42E1-1-1 |
| When should tubing be inspected? | before, during, after |
| What could be the result of bend flattening? | restricts amount of fluid to the system |
| What damage results in flow restrictions? | tube flattening |
| when replacing a damaged piece of tubing what is the first thing you must do? | find the cause of damage |
| What TO would you consult for the amount of allowable damage? | 42E1-1-1 |
| When a tube rated for 500 psi or greater what percentage of the OD is allowed to be wrinkled or kinked? | 1% |
| When a tube rated for 500 psi or less what percentage of the OD is allowed to be wrinkled or kinked? | 2% |
| What type of damage/corrosion requires replacement of tubing? | galling, chaffing/ Fretting |
| What does damage to tubes cause? | failures to withstand internal pressure |
| What intervals should tubing be inspected while performing the repair? | regular |
| Rynglok is applicable to what type of material and tubing wall thickness? | Every material and wall thickness |
| What type of tubing assembly fittings can Rynglok repair or duplicate? | flared, flareless, and lip sealed type fittings |
| What is the operation pressure for Rynglok? | 8000 psi |
| Is the Rynglok system permanent, or can the fittings be re-used? | Permanent and cannot be used. |
| Why does the Rynglok system reduce the amount of tooling required in the shop? | the tools can be used on the permalite system as well |
| What access can the Rynglok system operate in? | 180 degrees access |
| What are the advantages of the Rynglok system? | Applicable to everything material & wall thickness, 180 degree access, may swage over painted surfaces, universal assy tools accommodate fwd & rev' install', fittings can be attached to tubing after proper align' install', |
| To install the swage properly on a Rynglok what PSI is required? | 8-8500 |
| What type of compression is performed on permaswage? | radial compression |
| What PSI is permaswage repair fittings rated at? | up to 3000 PSI |
| What are some advantages of permaswage? | lightweight, Fittings for virtually every conceivable application, permanent metal to metal contact, Easy to install, simple inspection, may be swaged more than once, |
| What is the operational PSI of permaswage? | 3000 |
| What PSI is needed to properly seal permaswage fittings? | 10000 |
| What tool is used to inspect permaswage fittings after install? | go-no-go gauge |
| What type of operation is used to seal Dynatube fittings? | expanding inside to outside |
| What is used to check for wall expansion on Dynatube fittings after installation? | inside calipers |
| What is the dynatube swaging system compiled of? | expander assembly, set ring (collar), Male/female holding dies |
| What type of pressure is performed during Rynglok/permalite fitting installation? | axial pressure |
| What type of stop is used for inserting tubing into fittings? | perminent stop |
| What TO is used for Dynatube operation? | 42e1-1-1 |
| On Dynatube what are the expanders color codes? | blue- strictly aluminium, Yellow-titanium, green-steel, yellow w/green stripes-titanium or steel. |
| Permalite fittings have what type of composition? | Epoxy fiber rings bonded to titanium rings |
| What are the advantages of permalite? | metal to metal seal, lightweight, passes lightning strike test (spark free), fittings and tooling are interchangeable to rynglok |
| How do you write your name when signing off blocks in the 781A? | First initial and full last name. |
Created by:
comso9o
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