Aviation Ordnanceman And Military Leadership Study Guide

Front 1

Give a basic description of the M61A1 aircraft?

Back 1

Six (6) barrel rotary action automatic

Front 2

The M61A1 gun rotary mechanism works off of what aircraft system?

Back 2

Hydraulic

Front 3

The M61A1 aircraft gun is ____ driven and ____ controlled?

Back 3

Hydraulically - Electrically

Front 4

In an M61A1 gun system the six barrel rotary action mechanism is operated by what means?

Back 4

Hydraulic power

Front 5

The M61A1 gun has a pilot selectable firing rate of ____ low and ____ high?

Back 5

4,000 - 6,000

Front 6

Naval aircraft configured with the M61A1, 20MM aircraft gun have what (a) low and (b) high selectable rates of fire?

Back 6

(a) 4,000 (b) 6,000

Front 7

What is the SWL of the F/A-18 gun system hoisting adapter?

Back 7

874 LBS (Commonly known as the bird cage in the Hornet community)

Front 8

What series of ammunition is used in the M61A1 aircraft gun?

Back 8

M50 and PGU

Front 9

How is M50 series 20MM ammunition identified?

Back 9

Color and lettering

Front 10

What round of M50 series ammunition contains a fuze in the projectile?

Back 10

M505A3

Front 11

What 20MM gun ammunition shall not be used in-flight?

Back 11

M54 High Pressure Test (HPT)

Front 12

What ammunition should NEVER be fired from an aircraft in flight?

Back 12

HPT

Front 13

What are the primary parts of the M61A1 gun?

Back 13

Barrels, housing assembly, and rotor assembly

Front 14

What restrains individual barrel movement during firing?

Back 14

Muzzle clamp assembly

Front 15

The six barrels of the M61A1 gun are supported by what component?

Back 15

Stub rotor

Front 16

What secures the barrels to the rotor assembly?

Back 16

Three rows of interrupted locking lugs

Front 17

What component guides the rounds through the actions of the gun?

Back 17

Breech bolt assembly

Front 18

The M61A1 gun uses what total number of breech bolt assemblies?

Back 18

Six

Front 19

How many breech bolt assemblies are in the M61A1 Vulcan gun?

Back 19

Six

Front 20

What component transmits the firing voltage to the primer of the round?

Back 20

Breech bolt assembly

Front 21

The barrels of an M61A1 gun are secured to the rotor assembly by what means?

Back 21

Interrupted locking lugs

Front 22

What gives you a gripping surface for easy installation and removal of the barrels from the rotor?

Back 22

Knurled bands on the barrels

Front 23

What provides for the front mounting of the M61A1 aircraft gun?

Back 23

Recoil Adapters

Front 24

On the M61A1 gun, what is the clearing sector solenoid used for?

Back 24

Controls movement of clearing sector assembly

Front 25

What happens when the clearing sector assembly solenoid is activated?

Back 25

Sector arm diverts the bolt assemblies into the clearing cam path

Front 26

What controls the forward and aft movement of the breech bolts in the M61A1 gun?

Back 26

Rotor tracks

Front 27

What engages the rim of a round throughout the firing cycle?

Back 27

Extractor lip

Front 28

Where are the extractor lips located on the gun?

Back 28

Front of each breech bolt assembly

Front 29

What component is used to check the gun barrels after firing?

Back 29

Bore erosion gage

Front 30

On the M61A1 gun, the lubricator assembly is externally attached to what other assembly?

Back 30

Gun housing

Front 31

A lubricator assembly is attached to what component on the M61A1 gun?

Back 31

Housing assembly

Front 32

What lubricant is used in the lubricator assembly on the M61A1 gun?

Back 32

DOD-L-85336 (Due to California EPA restrictions, Lemoore squadrons use MC3000, that answer will most likely not be on the test)

Front 33

In the M61A1 gun when does the firing cycle begin?

Back 33

When power is applied to firing contact assembly

Front 34

The clearing cycle of the M61A1 gun starts at what time?

Back 34

When the breech bolt assembly returns the empty case to the guide bar

Front 35

Ammunition is guided into the extractor lip on a breech-bolt assembly by what?

Back 35

Guide bar fingers

Front 36

Empty ammunition cases are removed from the bolt assembly chamber by what?

Back 36

Extractor lip

Front 37

What would happen if the clearing sector arm was not installed?

Back 37

Gun would not fire?

Front 38

What diverts the succeeding bolt assemblies into the clearing cam path?

Back 38

Clearing sector arm

Front 39

What forces the bolt locking block upward when the clearing solenoid is deactivated?

Back 39

Leaf springs

Front 40

What is the purpose of the last round switch?

Back 40

Prevents expended rounds from being fed into the gun

Front 41

What removes live rounds or expended cases from the retainer partitions in the exit cover and places them in the conveyor elements?

Back 41

Sprocket assembly

Front 42

What provides a path from the entrance unit to the exit unit through which conveyor elements pass?

Back 42

Bypass chute

Front 43

Ammunition is transported from the transfer unit to the entrance unit by what chute assembly?

Back 43

Return

Front 44

What provides a path through which the conveyor elements transport rounds and expended cases around the aircraft structure?

Back 44

Chute assemblies - return and feed

Front 45

Conveyer elements are joined together by what?

Back 45

Removable hinge pins

Front 46

The ammunition handling system in the F/A-18 can hold a maximum of how many rounds/

Back 46

578 rounds

Front 47

How is the gun mounted in the F/A-18 aircraft?

Back 47

Internally mounted in the nose of the aircraft's Centerline

Front 48

When installed in the F/A-18, the M61A1 gun system is handled as?

Back 48

A single palletized unit

Front 49

What position should the manual clearing handle remain in until you are actually performing gun arming procedures?

Back 49

Cleared position

Front 50

What condition, if any is required when ammunition is loaded into the LALS?

Back 50

A RADHAZ free environment

Front 51

The LALS is not loaded or downloaded on the flight deck of an aircraft for what reason?

Back 51

The flight deck is not a RADHAZ safe area

Front 52

The MHU-131/E32K Ammunition Transporter Loader Linkless Ammunition Loading System (LALS I) can hold a maximum of how many rounds of 20MM ammunition?

Back 52

1,400

Front 53

The GFK-21/E32K-7Ammunition Loader (LALS II) can hold a maximum of how many 20MM rounds?

Back 53

1,800

Front 54

What level of maintenance performs maintenance on the LALS?

Back 54

Intermediate level

Front 55

At the organization level, what is the most important maintenance practice followed when working on the LALS?

Back 55

Ensure you are in a RADHAZ free environment

Front 56

What series of ammunition is used in the LALS?

Back 56

M50 and PGU series

Front 57

How is the LALS mated to the aircraft?

Back 57

The timed interface unit assembly must be mated to the timed aircraft gun system by the aircraft adapter assembly or Aircraft Interface Unit (AIU)

Front 58

After an M61A1 gun has fired 120,000 rounds, it should be sent to what location?

Back 58

Overhaul depot

Front 59

At what round interval doe scheduled maintenance begin for the M61A1 gun?

Back 59

15,000 rounds per the AO NTRC

7,500 rounds per the NA 11-M61A1-1

Front 60

At what round interval are the breech-bolt assemblies changed in the M61A1 gun?

Back 60

15,000

Front 61

Scheduled maintenance on the M61A1 gun for the handling and drive system is set at an interval of how many rounds?

Back 61

30,000

Front 62

The M61A1 gun is sent to depot level for overhaul at what round interval?

Back 62

120,000

Front 63

What is the scheduled maintenance interval established by the number of rounds fired through the M61A1 gun?

Back 63

7,500, 15,000, 30,000, 45,000, 60,000, 75,000, 90,000, 105,000, and 120,000 thousand rounds