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AIRFRAME REPAIR > CHAPTER 1 - General Maintenance Practices > Flashcards

CHAPTER 1 - General Maintenance Practices Flashcards

1
Q

WORKSHOP SAFETY
Why is first aid important? What is the job of the First Aider?

A

The legal duty of all employers. The First Aider is someone with a First Aid at Work certificate —> they have the responsibility to also replenish the first aid box

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2
Q

WORKSHOP SAFETY
Where do you find the Standing Order/Information for Fire Safety etc?

A

On the Safety, Health, Environment and Fire (SHEF) notice board

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3
Q

WORKSHOP SAFETY
What do you do in the event of a fire?

A

Shout Fire
Call 9999 - Give building 109 on MOD Lyneham
Call Guardroom - ext - 4999
Vacate the Building and head to the fire safety point

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4
Q

WORKSHOP SAFETY
When is the ONLY time you can use a fire extinguisher?

A

To aid in your escape from the fire

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5
Q

WORKSHOP SAFETY
What is a Risk Assessment?

A

It highlights the risks of actions as well as what to do in the event of incidents/accidents

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6
Q

WORKSHOP SAFETY
What is COSHH? Explain how this is achieved?

A

CONTROL OF SUBSTANCES HAZARDOUS TO HEALTH
Finding out the hazards of chemicals involved
Making sure all control measures are in good working order
Provide information to employees about these risks
Planning for any emergencies
Make sure all are aware of this law

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7
Q

WORKSHOP SAFETY
What is a SDS? And what information does it give us?

A

SAFETY DATA SHEETS (CHEMICAL)
Provides information on hazardous chemicals and gives information on handling, storage and emergency actions

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8
Q

WORKSHOP SAFETY
What are Safe Systems at Work?

A

Defines a safe method used the help eliminate/reduce risk

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9
Q

WORKSHOP SAFETY
What Act requires all personal to follow these rules?

A

Health and Safety Act 1974

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10
Q

TOOL CONTROL
Who has the final say regarding tool control being relaxed?

A

At the discretion of the relevant individual holding authority level K (normally OC Workshop)

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11
Q

TOOL CONTROL
Who can the Level K authority nominate to ensure the necessary degree of overall tool control?

A

Someone to act as “Tool Controller” for their Stn/Ship/Unit

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12
Q

TOOL CONTROL
Where are tools normally stored?

A

In a secure area, known as issue centres. Tool issues and return is strictly regulated

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13
Q

TOOL CONTROL
What is ADS? And what does it state regarding Tool Availability?

A

AIRCRAFT DOCUMENT SET
Tools must be available and only the necessary tools and equipment used when undertaking maintenance

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14
Q

TOOL CONTROL
When can tools be modified?

A

Only when authorised by the relevant platform Type Airworthiness Authority (TAA)

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15
Q

TOOL CONTROL
When can locally manufactured tools be used?

A

If they have the design specifications authorised by the relevant Type Airworthiness Authority (TAA)

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16
Q

TOOL CONTROL
1. How should a hand tool be marked?
2. What should you do if the tool is unable to be marked?
3. What tools should NOT be marked? What should be done instead?

A
  1. All hand tools should be permanently marked with a unique identity code on a metallic part of the tool and should not compromise the function of the tool
  2. Must be stowed in a clearly defined location and a register of these tools must be kept
  3. TEST and MEASUREMENT EQUIPMENT (TME) requiring calibration must not be edged. They have a unique identity code comprising of a prefix to identify the unit, then a further code identifying the hand tool. Individual suffix are added if multiple types of a tool are contained
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17
Q

TOOL CONTROL
Where should a hand tool be stored? How is this highlighted?

A

Each hand tool must have a unique storage location within an issue centre or tool kit.
Location should be HIGHLIGHTED eg. Shadowed or a cut-out shape. In duplicated hand tools, each location should have the suffix code clearly marked

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18
Q

TOOL CONTROL
What does a deficiency list provide in a tool kit?

A

It must identify the reason for the removal of any of the hand tools. The container, complete with its contents, must be marked, stored and controlled as though it was an individual hand tool.

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19
Q

TOOL CONTROL
Where are Remotely Located hand Tools stored?
What form should this also contain?

A

Held in a suitable lockable container, which must be locked, key secured and issue controlled
Must contain a MOD F757A (tools) to record any tool checks

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20
Q

TOOL CONTROL
1. What are the 100% tool checks that must be carried out?
2. What does this 100% tool check ensure?
3. Additionally, when else should checks of all hand tools be carried out?

A
  1. Start of a shift, at shift handover, and at the end of the working day
  2. Ensures all in-use, hand tools, tool kits, TKTs and ITTs are complete and accounted for
  3. A. On completion of any task, when hand tool is not being returned to issue centre
    B. Before fitting any component that will restrict access
    C. Prior to subjecting the aircraft to system checks
    D. At the discretion of the supervisor at convenient stages
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21
Q

TOOL CONTROL
What are the 2 types of Tool Tallies?
What are the differences?

A
  1. Master Maintenance Tally (MMT): is mandatory
  2. Master Line Tally (MLT): only used when tools are held forward of the issue centre under control of the Line Controller
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22
Q

TOOL CONTROL
When are Tool Kit Tallies used?

A

Used to draw additional tools from the issue centre, which are not contained within a tool kit but may be required for a special task. Each Tool Kit will usually have 10 TKT, items drawn must be noted down

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23
Q

MAINTENANCE TERMS
Define the word “Inspect”

A

Measure, or otherwise compare the item with the applicable requirements. This is normally done by a supervisor. They will assess what to do from there after.

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24
Q

MAINTENANCE TERMS
Define the word “Examine”

A

A comprehensive scrutiny, supplemented by PHYSICAL security check, to determine the items condition. Should be cleaned, use no test equipment (other than a mirror and/or the use of a mirror) before any faults are reported to the supervisor

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25
Q

MAINTENANCE TERMS
Define the word “Check”

A

Compare the item with the specified standard eg. Oil checks
Any faults should be reported to the supervisor

26
Q

MAINTENANCE TERMS
Define the word “Husbandry”

A

The CONTROL, CARE and MAINTENANCE required to PRESERVE the QUALITY and the INTEGRITY of PRODUCTS, PARTS and APPLIANCES throughout its life.

27
Q

TYPES OF STRUCTURAL FAULTS AND DAMAGE
Define the term “Worn”

A

Material or part consumed as a result of exposure to operation or usage

28
Q

TYPES OF STRUCTURAL FAULTS AND DAMAGE
Define the term “Chafed”

A

Frictional wear damage caused by two parts rubbing together with limited motion

29
Q

TYPES OF STRUCTURAL FAULTS AND DAMAGE
Define the term “Peeled”

A

A braking away/flaking of surface finish such as coating, plating etc

30
Q

TYPES OF STRUCTURAL FAULTS AND DAMAGE
Define the term “Dented”

A

An indentation usually caused by impact of a foreign object

31
Q

TYPES OF STRUCTURAL FAULTS AND DAMAGE
Define the term “Cracked”

A

Visible partial separation of material which may progress to a complete break

32
Q

TYPES OF STRUCTURAL FAULTS AND DAMAGE
Define the term “Eroded”

A

Carry away of material by flow of fluids or gasses accelerated by heat or grit

33
Q

TYPES OF STRUCTURAL FAULTS AND DAMAGE
Define the term “Corrosion”

A

Gradual destruction of the material by chemical action often evidenced by oxide build-up on the surface

34
Q

TYPES OF STRUCTURAL FAULTS AND DAMAGE
Define the term “Delamination”

A

Separation of adjacent layers within a multi-layer structure (like a sandwich gone wrong)

35
Q

TYPES OF STRUCTURAL FAULTS AND DAMAGE
Define the term “Crazing”

A

The development of very fine cracks in the matrix material

36
Q

TYPES OF STRUCTURAL FAULTS AND DAMAGE
Define the term “BVID”

A

BARELY VISIBLE IMPACT DAMAGE
Relates to Composite Materials when they have an impact and leaves little visible indication of damage

37
Q

TYPES OF STRUCTURAL FAULTS AND DAMAGE
Define the term “Paint Damage” and how this can cause Structural Faults/Damage…

A

External Protective finish may become damaged due to fading with age, UV light, impact damage, wear-chafing or contamination from leaking/spilt fuel, oils and lubricants
Regular washing and inspection of the external surfaces will help minimise paint damage

38
Q

TYPES OF STRUCTURAL FAULTS AND DAMAGE
Define the term “Loose or Damaged Fasteners ” and how this can cause Structural Faults/Damage…

A

May cause excessive vibration, wear, fretting/chafing and loss of torque loading. Related to:
Incorrect fitting
Incorrect locking
Incorrect fastener

39
Q

TYPES OF STRUCTURAL FAULTS AND DAMAGE
Define the term “Missing Parts” and how this can cause Structural Faults/Damage…

A

Missing parts can become FOD . Technicians can also use the aircraft Topic 3 to ensure a component has been assembled correctly. Missing parts will lead to loss of life and equipment

40
Q

TYPES OF STRUCTURAL FAULTS AND DAMAGE
Define the term “Damaged/Detached Seals” and how this can cause Structural Faults/Damage…

A

Seals manufactured of natural or synthetic rubber will become brittle and perish with age. They can split/tear which oiled allow moisture, sand, dirt and corrosive agents into the aircraft. Mostly occurs around the cabin and cockpit doors.

41
Q

SPECIFIC AIRCRAFT DAMAGE AREAS
State the above for the “Undercarriage”
State the difference between for a “Skid” and “Wheeled” Undercarriage

A

Skids: Distortion/wear from impact of passengers and landings
Wheeled: Prone to corrosion due to use of cast alloy components

42
Q

SPECIFIC AIRCRAFT DAMAGE AREAS
State the above for the “Door, Cowlings, Panels”

A

Misuse, rough handling and poor maintenance can lead to dents, scratches, corrosion, worn linkages/hinges and fastening mechanisms

43
Q

SPECIFIC AIRCRAFT DAMAGE AREAS
State the above for the “Refuelling Areas”

A

Prone to indentation damage from careless handling of the heavy refuelling hoses. Hoses can abrade the skin. Earthing devices may scratch the paint/skin

44
Q

SPECIFIC AIRCRAFT DAMAGE AREAS
State the above for the “Pitot Head”

A

As they are mounted away from the airframe, susceptible to impact damage which causes distortion etc. Also possible overheating damage (plastic pitot head)

45
Q

SPECIFIC AIRCRAFT DAMAGE AREAS
State the above for the “Wiper Blades”

A

Rubber blades may split or also pick up grit/dirt which can scratch the transparencies (also occur if operated dry)

46
Q

SPECIFIC AIRCRAFT DAMAGE AREAS
State the above for the “Servicing Areas”

A

Damaged by poor servicing techniques. Prone to dents, scratches, distortion and ultimately corrosion

47
Q

SPECIFIC AIRCRAFT DAMAGE AREAS
State the above for the “Rotor Blades”

A

Susceptible to erosion, especially in dusty/sandy conditions. Could become dented from FOD

48
Q

SPECIFIC AIRCRAFT DAMAGE AREAS
State the above for the “Transparencies”

A

Due to incorrect cleaning materials - results in scratches, crazing and discolouration.
Bird Strikes and Mishandling can lead to cracks/holes

49
Q

DETECTING STRUCTURAL FAULTS AND DAMAGE
List the 5 tests carry out the above

A
  1. Look
  2. Feel
  3. Listen
  4. Coin Tap
  5. Non Destructive Testing (NDT)
50
Q

DETECTING STRUCTURAL FAULTS AND DAMAGE
What is NDT? List the 6 different types

A

NON DESTRUCTIVE TESTING
1. Remote Viewing AIDS (RVA)
2. Penetrant Flaw Detection (PFD)
3. Eddy Current
4. Ultrasonic
5. Radiography
6. magnetic Particle

51
Q

DETECTING STRUCTURAL FAULTS AND DAMAGE
Describe what the “Look” method consists of:

A
  1. Look at the aircraft before cleaning as could be some clues to help eg. staining from a leak
  2. Clean to allow better examination (restrict to a light cleaning as might cause more damage from over-cleaning)
  3. Look again after cleaning
52
Q

DETECTING STRUCTURAL FAULTS AND DAMAGE
Describe what the “Feel” method consists of:

A

Some defects can be felt by running a fingernail over them like wear or cracks. This also applies in brinelling. Other times it is used is checking for security of attachments.

53
Q

DETECTING STRUCTURAL FAULTS AND DAMAGE
Describe what the “Listen” method consists of:

A

Often used with ‘feel’ to detect unusual noises such as clicking from a gearbox etc.

54
Q

DETECTING STRUCTURAL FAULTS AND DAMAGE
Describe what the “Coin Tap” method consists of:

A

If a Fibre Reinforced Plastic (FRP) panel is hit, it can cause dents in the surface and crush the honeycomb, affecting the FRP. To find delamination lightly tap the areas with a smooth-edged coin. Delamination = hollow sound. Serviceable = solid sound

55
Q

DETECTING STRUCTURAL FAULTS AND DAMAGE
Describe what the “Non-Destructive Testing” method consists of:

A

A generic term given to inspection methods that permit the examination of materials, structure or components without causing any damage that may render the material, structure or component unit for further use.

56
Q

DETECTING STRUCTURAL FAULTS AND DAMAGE
Describe what the “Remote Viewing AIDS” method consists of:

A

RVA system defined as a complete collection of RVA equipment required to provide assistance with a visual inspection e.g endoscopes

57
Q

DETECTING STRUCTURAL FAULTS AND DAMAGE
Describe what the “Penetrant Flaw Detection” method consists of:

A

Consists of thoroughly cleaning the area to be examined. Coating it with a penetrating liquid containing either a coloured dye or a dye which is fluorescent under UV light. Leave time for the penetrant to seep into the flaw, then wipe off all the excess surface penetrant and a developer applied, which draws the penetrant from the flaw by capillary action. Penetrant either stain the developer or fluorescent under UV, giving a visible indication of the flaw

58
Q

DETECTING STRUCTURAL FAULTS AND DAMAGE
Describe what the “Eddy Current” method consists of:

A

Involves electromagnetic induction of currents in a material. Changes of current flow can be detected, whilst is used to reveal the prescience of flaws

59
Q

DETECTING STRUCTURAL FAULTS AND DAMAGE
Describe what the “Ultrasonic” method consists of:

A

Ability to use sound waves to pass through material. Pulses of high frequency sounds are transmitted through the material and reflected from interfaces. Time taken for an echo to return determines whether the echo is from a flaw or another surface. Displayed on a cathode ray tube

60
Q

DETECTING STRUCTURAL FAULTS AND DAMAGE
Describe what the “Radiography” method consists of:

A

Extremely short wavelength penetrating rays are projected through a material and affect a photographic film on the opposite side of the material. Variations of thickness and density shown by difference in shadow intensity directed on to the film
Incredibly deadly dose of radiation…

61
Q

DETECTING STRUCTURAL FAULTS AND DAMAGE
Describe what the “Magnetic Particle” method consists of:

A

Used to detect surface or subsurface flaws in ferromagnetic materials (ferrous). Material is magnetised and then treated with suspension of fine ferromagnetic-particles in low viscosity fluid. Flaw on/near the surface with distort the magnetic field. Newly formed poles with attract the ferromagnetic particles

AIRFRAME REPAIR (13 decks)

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