AM Book CH1 General Aircraft Maintenance

Question 1

What type of diagram is useful for showing the relationship of components of a system and the sequence in which the components operate?

Answer 1

Block diagram

Question 2

How many sections make up the SDS? (Safety Data Sheet)

Answer 2

16

Question 3

What division is responsible for monitoring the tool control program?

Answer 3

Quality Assurance/ Analysis

Question 4

What officer is responsible for coordinating the tool control program?

Answer 4

Material Control Officer

Question 5

The tool control program is based on what inventory concept?

Answer 5

Instant inventory

Question 6

What safety hazard term is used when the application of a procedure is mandatory?

Answer 6

Shall

Question 7

What type of diagram is a graphic representation of a system that shows how a component fits with other components but does not indicate its actual location in the aircraft?

Answer 7

Schematic

Question 8

What are the seven steps encompassed in the troubleshooting aids generally found in the aircraft MIMS?

Answer 8

According to page 1-14 of the material, here are the seven steps:
1. Conduct a visual inspection 👀
2. Conduct an operational check ✔️
3. Classify the trouble 🔍
4. Isolate the trouble 🎯
5. Locate the trouble 📍
6. Correct the trouble 🛠️
7. Conduct a final operational check ✅

The MIM for each aircraft generally provides troubleshooting aids that encompass the above following seven steps.

Question 9

During a visual inspection, a hydraulic system should be checked for what primary concerns?

Answer 9

proper servicing

Here’s the exact quote:
“During this visual inspection, check the hydraulic system for proper servicing, the reservoir for proper level, and accumulators for specified preload, etc.”

So the primary concerns are:
- Proper servicing levels ⚙️
- Reservoir fluid level 💧
- Accumulator preload 📊

Question 10

What substance is used to reduce friction, cool metallic parts and prevent wear?

Answer 10

Lubricants

Question 11

What method of lubrication application is used when it’s necessary to cover a large area?

Answer 11

Brush Method

“Brush — This method of lubrication is used when it is necessary to cover a large area, or for coating tracks or guides with a lubricant.”

Question 12

What lubrication specification series is represented by the identification letters BRW?

Answer 12

According to page 1-23, specifically in Table 1-6, the identification letters BRW represent MIL-PRF-81322(series), which is “Grease Aircraft, General Purpose, Wide Temperature.”

Question 13

What technical manual covers weight and balance?

Answer 13

NAVAIR 01-1B-50

The requirements, procedures, and responsibilities for aircraft weight and balance control are defined in the technical manual.

Interestingly, the text also notes that if there are any conflicting requirements, the COMNAVAIRFORINST 4790.2(series) and the NATOPS manual take precedence over NAVAIR 01-1B-50!

Question 14

What are the four types of aircraft slings?

Answer 14

According to page 1-27 of the material, the four types of aircraft slings are:
1. Wire rope 🔧
2. Fabric or webbing 🧵
3. Structural steel or aluminum 🏗️
4. Chains ⛓️

“Aircraft lifting slings are constructed in accordance with military specification (MILSPEC) MIL-S-5944, and can be classified under four types of construction or combinations of those types. The four types are wire rope, fabric or webbing type, structural steel or aluminum type, and chains.”

The text mentions that these can be used individually or in combinations, depending on what needs to be lifted! Wire rope is actually noted as being the most common type.

Question 15

What is the most common type of aircraft lifting sling used today?

Answer 15

Wire rope

According to page 1-27 of the material, Wire Rope slings are the most common type used!

Here’s the exact quote:
“The wire rope sling is the most common type, and it combines high strength, ease of manufacture, and a great deal of flexibility for compact storage.”

The text explains that there are two basic types of wire rope slings:
1. Multi-legged wire rope sling with an apex-lifting link
2. Wire rope sling built with structural steel or aluminum in combination with wire rope supports

Question 16

What type of slings do not contain flexible components?

Answer 16

Structural Steel

“Slings of this type are constructed with plates, tubing, I-beams, and other structural shapes, and they do not contain flexible components.”

Question 17

What does the second number of a wire rope designation indicate?

Answer 17

Number of wires in a strand

According to page 1-29 of the material, the second number in a wire rope designation indicates the number of wires in each strand!

“The first number identifies the number of strands in a cable, the second number identifies the number of wires in each strand.”

The text explains the basic construction of wire rope:
- Individual cylindrical steel rods are called wires 🔧
- Groups of wires twisted together form strands
- Groups of strands twisted around a central core make a wire rope or cable

So if you see something like “6x19” wire rope, that means:
- 6 = number of strands
- 19 = number of wires in each strand

Question 18

What type of jack is used for changing aircraft tires?

Answer 18

Axle Jack

“Axle jacks are used for raising one landing gear assembly of an aircraft for maintenance of tires, wheels, and brakes.”

All axle jacks have model designations that begin with the letter “A” (for axle). For example, “A10-1HC” would be a 10-ton hand-carried axle jack.

Question 19

What minimum number of tie down chains must be attached to jacks during shipboard jacking operations?

Answer 19

Minimum of 3 per jack

Question 20

What safety hazard term is used to indicate when the application of a procedure is recommended?

Answer 20

Should

Question 21

Ensuring tools are procured and issued in a controlled manner consistent with the approved tool control plan is the responsibility of what officer?

Answer 21

Material Control Officer

Question 22

Which of the following reports should be used to report poor quality tools to the Fleet Material Support Office?

Answer 22

Category II product quality deficiency report

poor quality tools should be reported using category (CAT) II Product Quality Deficiency Reports (PQDRs)!

“Defective/poor quality tools received from supply are reported to the Fleet Material Support Office (FLEMATSUPPO) via category (CAT) II Product Quality Deficiency Reports (PQDRs).”

Question 23

Which of the following Chief of Naval Operations instruction series provides information on the chain of command’s responsibilities in regards to safety?

Answer 23

OPNAVINST 5100.19-sea
OPNAVINST 5100.23-shore?

Question 24

What type of drawing is used to show details of parts, components, and other objects?

Answer 24

Orthographic drawing

“Orthographic drawings show details of parts, components, and other objects, and are primarily used by the manufacturer of the object. Usually, the drawing contains two or more views of the object.”

Question 25

How many categories of malfunctions are there?

Answer 25

4

“Malfunctions usually fall into four basic categories—hydraulic, pneumatic, mechanical, or electrical.”

Let’s break them down:
1. Hydraulic - affects normal flow of hydraulic fluid 💧
2. Pneumatic - affects normal flow of compressed gases 💨
3. Mechanical - involves issues with mechanical linkages 🔧
4. Electrical - involves power or circuit failures ⚡

Question 26

After conducting a visual inspection and an operational check, what troubleshooting step should be next?

Answer 26

Classify the trouble

Question 27

How many forms of lubricants are there?

Answer 27

3

“Lubricants are available in three forms: fluids, semisolids, and solids.”

Let’s break them down:
1. Fluids (like oils) 💧
2. Semisolids (like grease) 🧴
3. Solids (like graphite, molybdenum disulfide, talc, and boron nitride) 🧱

The text mentions that solid lubricants are often used as additives to fluid and semisolid lubricants. They work because their molecular structure allows their platelets to easily slide over each other!

Question 28

Flush lubrication fittings are used for which of the following reasons?

Answer 28

To prevent interference with moving parts
These fittings have a spring loaded ball, just like hydraulic fittings, which act as a check valve

Question 29

Which of the following is not a type of aircraft lifting sling?
A-wire rope
B-snatch cable
C-fabric webbing
D-structural steel

Answer 29

Snatch cable

Question 30

To find load testing and inspection information on aircraft lifting sling, you should consult what publication?

Answer 30

NAVAIR 17-1-114

consult NAVAIR 17-1-114, “Inspection and Proofload Testing of Lifting Slings and Restraining Devices for Aircraft and Related Components”!

“Upon completion of the inspection, the FRC or AIMD will tag all equipment in accordance with the Inspection and Proofload Testing of Lifting Slings and Restraining Devices for Aircraft and Related Components manual, NAVAIR 17-1-114.”

it’s used by Fleet Readiness Center (FRC) or Aircraft Intermediate Maintenance Department (AIMD) when inspecting and tagging equipment. 🏗️✅

Question 31

A group of wires twisted together is known by what name?

Answer 31

Strand

Question 32

In reference to a cable, what does the term “bird cage” mean?

Answer 32

A kink that has been pulled through in order to straighten a cable

Question 33

You should avoid laying slings on which of the following surfaces?

Answer 33

Ash or concrete floors

Question 34

What are the two types of aircraft jacks used by the navy?

Answer 34

Axle and Airframe (Tripod)

Question 35

Aircraft jacks are serviced with what type of fluid?

Answer 35

Aircraft hydraulic fluid

Question 36

A tripod jack consists of what total number of basic assemblies?

Answer 36

3

“Both are mobile, self-contained, hydraulically operated units that consist of three basic assemblies: the hydraulic cylinder, the tubular steel wheel tripod leg structure, and the hydraulic pump.”

This applies to both types of tripod jacks - fixed height and variable height! The main difference between these types is that variable height jacks can have leg extensions added to adjust their height.

Question 37

A leg extension kit for a variable height tripod jack will increase its effective height by what total amount of inches?

Answer 37

18 inches

“Each leg extension kit increases the effective height of the basic jack by 18 inches.”

The text uses the T20-1VH5 jack as an example, showing in Figure 1-20 a jack with two of its five possible extension leg kits installed. The “5” in the model number actually indicates how many leg extension kits are available for that particular jack! 📐

So if you installed all five extension kits, you could increase the height by 90 inches total (5 x 18 inches)!

Question 38

During jacking operation, the tie down chain preload is too high when which of the following conditions exist?

Answer 38

The tensioning grip cannot be rotated by hand

Here’s the exact quote from the CAUTION note:
“Preload on the tie-down chains is too high when tensioning grips cannot be rotated manually.”

This is really important during jacking operations! The text explains that you need to:
- Coordinate extension of tie-down chains while jacking
- Partially remove preload on each tie-down chain before jacking
- Maintain partial preload during jacking by rotating the chain tensioning grip
- Be able to manually rotate those tensioning grips! 🔧

If you can’t rotate those grips by hand, that’s your warning sign that the preload is too high! ⚠️

Question 39

When aboard ship, who will the squadron maintenance control request permission through to place an aircraft on jacks?

Answer 39

CAG (Carrier Air Group)