Y'all better know this
What is the common deflection of a M109A6?
All howitzers common deflection is 3200
MVV stands for?
Muzzle Velocity Variation
What is the formula for Vertical Interval?
TGT Alt - Unit Alt = VI
Who is authorized to give the command "Check Firing"?
Anyone
A M109A6 "goose egg" can be how large?
What does RALS stand for?
Right Add, Left Subtract
How many mils are in a circle?
6400 mils
What does AFATDS stand for?
Advanced Field Artillery Tactical Data System
What TFT is used for M107 HE round
AM-3
The formula for calculating MVV is
Hint MVV = ______ + _______
shooting strength, Propellent Efficiency
What are the five requirements for accurate fires?
Accurate TGT location and size, Accurate Fire Unit location, Accurate weapon and ammo information, Accurate MET information, Accurate computational procedures.
Name four instances when you would announce TOF to the observer
When requested, moving TGT, when firing High Angle, using an aerial observer.
What form is used to record technical firing data in the FDC?
DA 4504
Angle T is given to the observer when it is equal to or greater than _ mils or when requested?
500 mils
Name two things that would solely cause a Quadrant issue when trying to Dry Fire Verify:
MVVs, prop temp, square weight, TGT alt, gun alt.
When dealing with deflections, which rule applies, RALS or LARS?
What will be XOs Min QE?
Gun 1 - 223 Gun 2 - 315
Gun 3 - 210 Gun 4 - 322
XOs Min QE = 322
What subsequent fire command must always be announced?
Quadrant
What are the BIG 3?
MVV, Prop temp, Square weight.
Name three instances when you are required to conduct a Dry Fire Verification with the M109A6
Initialization of the PDFCS, when the PDFCS or AFATDS shuts down and is powered back up, significant change in the database (change in: MET, registration data, or MVVs are significant changes)
Angle T is expressed and announced to the nearest how many mils?
Nearest 100 mils
When processing a danger close mission what special instruction is announced?
USE GUNNERS QUADRANT
In what order is Chart Data announced?
Range, Deflection, Angle T
What does BIP stand for?
Ballistic Impact Point
Your PLT fires a 4 round FFE mission. You receive EOM and are instructed to record that TGT as a Priority TGT. Your PLT reports that they are layed on the Priority TGT. After 2 hours of firing, BN FDC sends your FDC updated MET. Describe what actions should be taken.
Met must be sent to howitzers, DFV, reprocess priority TGT, send down to guns. Ideally, this is not done to the whole firing unit at once to ensure the PT can still be shot. As a battery, maybe do one PLT at a time. As a PLT, maybe do one gun at a time or 2 then 1 or 1 then 2.