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15-01-500 (2018) > preservation > Flashcards

preservation Flashcards

1
Q

LEVEL I PRESERVATION

A

This preservation
level is recommended for short term protection
(90 days or less) and is the baseline for all subsequent
preservation levels.

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2
Q

LEVEL II PRESERVATION

A

This level removes selected systems from operational condition and preserves them for a storage period up to 1 year

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3
Q

LEVEL III PRESERVATION

A

This is the highest level of aircraft and aircraft system preservation. It affords the best protection for an indefinite period of time.

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4
Q

LEVEL IV PRESERVATION

A

is an umbrella preservation status for aircraft undergoing depot-level repair. Instead of preserving the entire aircraft in one level of preservation, systems and components may be in various levels of preservation dependent on the requirements of the repair cycle

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5
Q

When the decision is made to remove an aircraft from active service, it may be placed in ___________with the Aerospace Maintenance and Regeneration Group (AMARG) located at Davis Monthan Air Force Base, Arizona

A

desert storage

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6
Q

This type of storage is not recommended for aircraft intended to be reintroduced back into the fleet

A

desert storage

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7
Q

Aircraft and removed aircraft components to be shipped must be protected in accordance with the requirements for ______or_______preservation

A

Level II or Level IIl

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8
Q

The basic foundation of Level _______ protection is to ensure all systems are kept free of water and fluids are topped off. Spray or brush-on thin corrosion preventive compounds are applied to bare surfaces to provide a chemical barrier separating metal from moisture. Water and foreign object intrusion areas are sealed with tape and barrier (T&B) material and protective covers.

A

I

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9
Q

Perform a ________ prior to and the day after the arrival of a storm. Storm conditions are winds over __ knots.

A

Storm inspection, 35

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10
Q

With the application of longer lasting protection to selected systems and components. The barrier system for Level __ preservation ranges from a broader use of T&B material to the application of a top cover, with the option of shrinkwrap or strippable coating for shipment of aircraft only

A

II

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11
Q

Apply a thin film of ____________, to arresting gear, landing gear, wing fold, tailskid and all exposed portions of reciprocating rods

A

hydraulic fluid, MIL-PRF-83282

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12
Q

Level ___protection requires modified Level II procedures with the addition of dehumidification. The barrier system for Level _____ preservation includes the flexible bag, the drop shroud and the rigid shelter. The time limitation of the preservation cycle is dependent on the barrier system renewal requirement.

A

III, III

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13
Q

Check humidity indicators. Initiate corrective action if humidity exceeds __% RH

A

40

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14
Q

Aircraft to be shipped shall be protected in accordance with _____or______preservation requirements

A

Level II or Level III

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15
Q

Strippable coating or shrinkwrap shall be removed within __ days of application (including time during shipment) or within __ days of receipt of aircraft, whichever is sooner

A

60, 5

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16
Q

Carefully clean elastomeric portions and embedded or attached conductors of EMI seals with _______

A

isopropyl alcohol, TT-I-735

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17
Q

PNEUMATICS: If water is found, completely bleed the system of all air, service chemical air driers, fill system with ____________, and recheck for water

A

dry nitrogen, A-A-59503 Type I

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18
Q

When pneumatic systems are partially disassembled during maintenance or storage, blank off all openings, including chemical air driers using _________________and _____, NAS 847, or ___________, MIL-PRF-131 Class 1, and_____, SAE AMS-T-22085

A

non-shedding threaded type caps and plugs, barrier material and tape

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19
Q

Serious damage can occur to elastomeric parts and engine in-flight failures may result if fuel systems are left drained of fuel and unprotected for longer than ___ hours

A

72 HOURS

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20
Q

Observe starter limitations during this operation. Allow a fuel soak period of at least ___ hours for the metering devices before starting the engine

A

8

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21
Q

What level do you remove floatation bags and CAD inflation device and store in accordance with NAVAIR 11-100-1.1-CD. Dry and dust with talc, A-A-59303

A

Level II and III.

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22
Q

Store flotation gear in ______ aircraft

A

PARENT

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23
Q

Prior to any preservation activities, all CADS in flotation gear shall be made safe by ______

A

AUTHORIZED PERSONNEL

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24
Q

Some liquid oxygen converters are peculiar to a particular aircraft. Such converters cannot be installed in another aircraft without extensive modification of the system. These non-interchangeable converters shall not be separated from ___________

A

PARENT AIRCRAFT

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25
Q

Cylinders which have been open to atmosphere or voided of oxygen (to less than __ psig) shall be removed from service and subjected to heat vacuum treatment before recharging.

A

15

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26
Q

Bleed portable oxygen cylinders to __ psi (for low pressure type) or __ psi (for high pressure type) and leave on aircraft

A

25, 50

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27
Q

Bleed low and high fixed-type oxygen cylinders to approximately ____ psi

A

100

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28
Q

Shut off all cylinders at __________ or disconnect lines at self-opening valves located on or near cylinders. Cap all openings with ___________or_________as applicable

A

manual shut off, pressure type caps or plugs

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29
Q

Level II. Protect in accordance with Level I requirements plus preserve oxygen system regulators by covering regulator openings and connections with __________, MIL-PRF-131 Class 1, held in place with _____, SAE AMS-T-22085 Type II

A

barrier material, tape

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30
Q

Level I, II and III. Every ___ days, check packaged oxygen bottles for water damage. Remove oxygen bottles for rework if pressure has dropped below ___ psi.

A

7, 10

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31
Q

If the system was disconnected during maintenance or storage, purge with____________, A-A-59503 Type I, between the concentrator and the survival kit manifold. The temperature at the inlet to the system should not exceed ______°F during purging. The purging procedures shall continue until the distribution terminals in the cockpit are warm to the touch (150°F), then continue to purge for an additional ____ minutes.

A

hot dry nitrogen, 250, 10

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32
Q

When a parachute assembly must be packed under unfavorable conditions, provisions shall be made to protect it from possible damage and excessive humidity. In no case shall the parachute assembly be interrupted after the packing operation has been started. If the packing operation is interrupted due to unforeseen circumstances, the parachute assembly shall be ___________

A

completely repacked

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33
Q

When portable fire extinguishers are left in aircraft, bottles shall be maintained in _________ condition. Observe the ____year test requirements of DOT regulations for compressed gas cylinders.

A

a fully charged, ready to use, 5

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34
Q

Fabric portions of seat belts, shoulder harnesses and inertia reels shall be cleaned to remove light soil and oil spots. Sponge clean using cleaning
solution (1 part MIL-D-16791 Type I in 16 parts water or 1 part MIL-PRF-85570 Type II in 4 parts water). Rinse with a clean, damp rag or sponge. Webbing exposed to salt water shall be washed in _______

A

fresh water.

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35
Q

If fungal growth is detected on rubber wiper blades, wipe blades with clean ___________, CCC-C-440, saturated with __________

A

cheesecloth, isopropyl alcohol

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36
Q

Oxygen system components shall not be exposed to ____________ or to any other materials not specifically designated for use on oxygen systems

A

HYDROCARBONS

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37
Q

hydrocarbons?

A

(oils, greases, fuels and preservatives)

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38
Q

Whenever possible, parachutes packaged for indefinite storage shall be packed and stored in a ______or______ condition

A

loosely folded or “fluffed”

39
Q

Pressure Sensitive Tape. Noncorrosive tapes conforming to SAE AMS-T-22085 shall be used for all preservation operations such as closing of openings to exclude foreign matter, attaching ________and______and_________. When using approved tapes for preservation and packaging, do not apply tape directly to machine finished bare metal surfaces or transparent acrylics. Select an adjacent noncritical painted surface for attachment

A

barrier material and tags and securing cushioning material

40
Q

Masking Tape. Paper masking tapes shall not be used for preservation or packaging except for temporary _________________during assembly, or when specifically authorized by an engineering directive for a special situation

A

holding of setup box segments

41
Q

Because paper masking tapes are corrosive under certain conditions, they shall be removed from all _________ surfaces before items are packaged and before adhesion has built up to the point where tape removal is difficult or adhesive transfer results

A

metallic

42
Q

masking tapes shall be removed no later than the next consecutive work shift after painting is complete or within ____ hours, whichever is sooner.

A

24

43
Q

Seals, caps and plugs used in fuel, lubricating oil, and hydraulic systems shall be designed to positively seal against loss or leakage of fluids under an internal pressure of ___ psig.

A

2-5

44
Q

Packing methods: Preservation coating, wrap and cushioning within a heat sealed, watervaporproof barrier bag. This method provides water vapor protection.

A

Method 40

45
Q

Packing methods: Preservative coating, wrap and cushioning within a heat sealed greaseproof and waterproof barrier bag. This method provides protection from both oil and water intrusion

A

Method 30

46
Q

Packing methods: Same as Method 40 except for the addition of desiccant inside of the heat sealed bag. This method provides the highest degree of water vapor protection for delicate or corrosion sensitive items.

A

Method 50

47
Q

Any box over ______ pounds shall be skid mounted or shipped on a pallet

A

200

48
Q

_______________can be used for individual aircraft or for an entire shelter where many aircraft and components can be protected.

A

Dehumidified (DH) Storage

49
Q

what level is Dehumidified (DH) Storage?

A

Level III

50
Q

3 types of Dehumidified (DH) Storage?

A

Rigid, Shroud, and Bag

51
Q

___________is with the top cover, shippable coating, and tape and barrier methods, provides limited protection for the aircraft and components, and requires periodic represervation and maintenance of CPCs to sustain the protection.

A

Nondehumidified Storage

52
Q

what level is Nondehumidified Storage

A

Level I and II

53
Q

4 types of Nondehumidified Storage?

A

Top Cover, Strippable Coating, Tape & Barrier, Shrinkwrap

54
Q

If cartridge activated devices and/or rocket motor escape devices are not removed before preservation, one of the Warnings in Figure 3-2 shall be applied to each side of the cockpit area. Lettering shall be_____and a minimum of __ inch in height

A

red, 1

55
Q

Shelter: Hangers, metal sheds, buildings, preengineered metal buildings, and tension fabric shelters have been successfully dehumidified to Level III standards provided the walls, ceiling, doors and floor are adequately sealed

A

Rigid shelter

56
Q

Shelter: The material can be supported, draped over a floor mounted framework, hung from a suspended rigid frame, or unsupported (draped over preserved item like a blanket). developed to fill a niche in DH protection technology

A

Drop shroud

57
Q

The two basic types of flexible covers are_____and _____covers

A

bags and top

58
Q

is used to protect aircraft during Level II preservation. It is most familiar as the white cocoon covering on aircraft being shipped (see Figure 5-12). This coating shall be used only for shipment of aircraft/components and is not recommended for storage.

A

Strippable coating

59
Q

____________ provides protection against the entrance of dust, dirt, FOD, moisture, animals and insects. It also protects aircraft surfaces from the effects of blowing sand, debris, sunlight (UV) and environmental fallout

A

Tape and Barrier Material (T&B)

60
Q

a low density polyethylene (LDPE) film made from low melt resin. Used to protect aircraft or components during Level II preservation (see Figure 5-21). It shall be used only for shipment and is not recommended for storage.

A

Shrinkwrap

61
Q

_________ cannot be used to ground aircraft. A separate grounding cable must be used

A

Tiedown chains

62
Q

The preferred wheel chocks for land based aircraft are those made from ___________

A

polyurethane

63
Q

The wheel chocks are available in ____ different sizes according to the dash number after the P/N: -1 for wheels __ to a 33 inch diameter, -2 over ____ inches in diameter, and -3 for dual or tandem main landing gear. Refer to NAVAIR 17-1-537 for additional information

A

three, up, 33

64
Q

Material Defect Indications: Dirt, chemicals, debris.

A

Contamination

65
Q

Material Defect Indications: Intense and localized corrosion within crevices or other shielded areas on metal surfaces, such as holes, gasket surfaces, lap joints, surface deposits, bolt and rivet heads. This type of attack is usually associated with trapped moisture.

A

Crevice Corrosion

66
Q

Material Defect Indications: Usually found in and around metal fasteners. It appears as metal “flaking” or lifting up from the parent material. Occurs in high strength aluminum and magnesium parts

A

Exfoliation Corrosion

67
Q

Material Defect Indications: Wormlike traces of corrosion products beneath the paint. Can occur on steels, aluminum and magnesium.

A

Filiform Corrosion

68
Q

Material Defect Indications: Attachment of two different metals with corrosion product buildup at the joint between the metals

A

Galvanic Corrosion

69
Q

Material Defect Indications: Corrosion of iron or iron-base alloys result in the formation of corrosion products (oxide) on the surface that appear reddish-brown in color. Corrosion of aluminum and its alloys results in white oxides

A

General Corrosion

70
Q

Material Defect Indications: Corrosion within the grain structure of the material. Hard to identify by visual inspection, but may look like sand grains in the crack surface

A

Intergranular Corrosion

71
Q

Material Defect Indications: First noticeable as a white or grey powdery deposit similar to dust. When deposits are cleaned away, tiny pits or holes are seen on the metal surface. Most common corrosion in aluminum or magnesium

A

Pitting Corrosion

72
Q

Material Defect Indications: Mild: General dulling or etching of the metal surface. Advanced: Rough and possibly frosted appearance of the metal surface

A

Uniform Surface Corrosion

73
Q

Material Defect Indications: Break in a paint film or coating with the underlying material exposed. Separation of metal surface along a narrow path

A

Cracking

74
Q

Material Defect Indications: Loss of plating, paint, or parent metal.

A

Erosion

75
Q

Material Defect Indications: Fine cracks in paint, or distortion of part.

A

Fatigue

76
Q

Material Defect Indications: Loaded surfaces in contact with each other subjected to vibration and slip. It appears as pits, grooves or black streaks at the contact areas of the materials. A red or black powder is often present.

A

Fretting

77
Q

Material Defect Indications: Broken or worn wires in cables, loss of CPC or oil coating

A

Fraying

78
Q

Material Defect Indications: Biological growth and possible musty, rancid odor

A

Mildew

79
Q

Material Defect Indications: Actual wetness or water marks (deposits)

A

Moisture

80
Q

Material Defect Indications: Partially adherent layers of corrosion products on metal surfaces. Usually found on engines or other high temperature parts

A

Scaling

81
Q

Material Defect Indications: Refer to NAVAIR _________ for additional information and examples

A

01-1A-509-1

82
Q

Wiping down struts?

A

MIL-PRF-83282 Fluid, Hydraulic

83
Q

Level I is the most basic preservation. Systems are kept clean and free of water, and fluids are?

A

maintained full

84
Q

How long is Type I preservation good for?

A

Aircraft may be maintained in Level I preservation

for a maximum of 90 days.

85
Q

What is Type II preservation,Systems are kept clean and free of water, and fluids are maintained full In addition, selected systems are

A

DRAINED

86
Q

Level II preservation provides

minimum protection for up to?

A

one year

87
Q

Aircraft undergoing depot level maintenance actions are in preservation level?

A

Level IV preservation

88
Q

Removed engines and APUs shall be

protected in accordance with Level ?

A

II or Level III

89
Q

Engines shall be preserved within
?? days of the last engine run. Removed engines
shall be stored indoors. Level I preservation is not
recommended for removed engines unless they will be
reinstalled within 28 days.

A

14

90
Q

Check fuel level, maintain 95%

full. Check barrier material and repair or replace if torn

A

Engines Level I. 7 day. Check

91
Q

Install engine on test stand or
aircraft. Hot run the engine and cycle systems, including
afterburner, twice. Inspect and renew CPC coatings if
required.

A

Engine level I 28 day.

92
Q

Level I. Keep fuel systems at least 95%
of fuel. Seal seams and openings of engine, except
compressor inlet and exhaust outlet, using barrier
material, MIL‑PRF‑131 Class 1,

A

Operational Engine Protection.

93
Q

Check humidity card. If humidity
exceeds 40%, replace desiccant. Inspect barrier material
and closures for tears or damage. Repair or replace
barrier material and closures as required.

A

Engine Level II. 7 day. check

94
Q

28 day. Inspect and renew CPC coatings

if required.

A

Engine Level II. 28 day check

15-01-500 (2018) (1 decks)

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