TC 3-22.91 — Mortar Fire Direction Procedures (this Item Is Published W/ Basic Incl C1)
TC 3-22.91 governs mortar fire direction procedures, including fire direction, firing data, fire planning, fire missions, plotting, and mortar fire control systems.
- Publication number: TC 3-22.91
- Title: MORTAR FIRE DIRECTION PROCEDURES (THIS ITEM IS PUBLISHED W/ BASIC INCL C1)
- Date: 08/29/2025
- Proponent: T2COM
- Status: ACTIVE
View TC 3-22.91 on armypubs.army.mil
It covers fire direction, tabular firing tables, fire planning, target analysis, aiming circles, plotting boards, ballistic computers, mortar fire control systems, and fire missions. It requires FDC certification for all units with mortars and describes safety procedures, field-expedient survey techniques, and mortar qualification DA forms.
Applies to: FDC certification is required for all units with mortars;
Topics covered
- Mortar fire direction
- Tabular firing tables
- Fire planning
- Aiming circles
- Plotting boards
- Mortar ballistic computers
- Mortar fire control systems
- FDC certification
Questions and answers
What does fire direction include?
Fire direction is the tactical and technical employment of firepower, the exercise of tactical command of one or more units in the selection of targets, the massing or distribution of fire, and the allocation of ammunition for each mission. (paragraph 2-1)
What data does a firing table provide?
An FT provides the data required to bring effective fire on a target under any conditions. (paragraph 3-28)
What is required for FDC certification?
FDC certification is required for all units with mortars; it tests the proficiency of Soldiers to perform their duties as FDC computers and section leaders. (paragraph 3-33)
How is data recorded when using the MFCS?
Data is recorded throughout the process to maintain a record and to preserve data if the MFCS fails. (paragraph 9-52)
What is the standard smoke mission coverage and duration?
The standard smoke mission covers 500 meters for 10 minutes, but this width and time can be adjusted depending on the mission requirements. (paragraph 10-107)