DA Form 4200: Met Data Correction Sheet – Official Guide

DA Form 4200: Met Data Correction Sheet – Official Guide – The DA Form 4200, officially titled the Met Data Correction Sheet, is a vital US Army form used in field artillery operations to apply meteorological (met) corrections for accurate fire direction. Artillery units rely on this form during manual fire direction center (FDC) procedures to adjust for environmental factors like wind, temperature, air density, and projectile variations, ensuring rounds hit their intended targets.

This article provides a comprehensive overview, including purpose, usage instructions, key sections, and official resources tailored for US Army soldiers and artillery professionals.

What Is DA Form 4200?

DA Form 4200 is the Met Data Correction Sheet used primarily in field artillery for solving concurrent meteorological techniques. It records and computes corrections based on ballistic meteorological messages (often Type 3 messages) to adjust range, deflection, and fuze settings.

The form supports manual computations when automated systems are unavailable or for verification. It is especially relevant for howitzer units and integrates with tabular firing tables (TFTs) and other fire direction tools.

Key Details:

  • Form Number: DA Form 4200
  • Title: Met Data Correction Sheet
  • Proponent: US Army Training and Doctrine Command (TRADOC)
  • Latest Version: January 2016 (previous editions obsolete)
  • Official Download: DA Form 4200 PDF

Purpose of the Met Data Correction Sheet

The primary purpose of DA Form 4200 is to calculate and apply met corrections to firing data for improved accuracy in artillery operations. Meteorological conditions significantly affect projectile trajectory, so corrections for range wind, crosswind, air temperature, density, and other factors are essential.

It is used in:

  • Concurrent met techniques
  • Manual FDC operations
  • Situations requiring precise adjustments for all elevations, charges, and howitzer types
  • Training and verification of ballistic computations

Accurate use of this form helps minimize dispersion and ensures mission success while maintaining safety standards.

When and Why to Use DA Form 4200?

US Army artillery crews use DA Form 4200 when:

  • Receiving ballistic met messages (recorded on DA Form 3675)
  • Performing manual computations in the absence of digital fire direction systems
  • Conducting training on met techniques (vowel rule or RATT method)
  • Verifying or applying corrections for range, deflection, and fuze settings

Environmental factors like wind direction/speed, temperature deviations, and air density vary by location and time, making real-time corrections critical for first-round accuracy.

Key Sections of DA Form 4200

The form includes dedicated areas for:

  • Battery Data: Charge, altitude of battery (Btry), adjusted quadrant elevation (QE), chart data
  • Target and Burst Information: Altitude of target, height of burst, met datum point (MDP)
  • Wind Components: Direction of wind, chart direction, range wind, crosswind, speed
  • Atmospheric Data: Air temperature, air density, pressure
  • Projectile and Velocity Data: Projectile weight, rotation, muzzle velocity (MV) variations, propellant temperature
  • Corrections: Met range correction, deflection correction, fuze correction, total corrections
  • Computation Areas: Variations from standard, unit corrections, new velocity, etc.

The layout supports step-by-step computation following TFT sequences.

How to Fill Out DA Form 4200: Step-by-Step Guide?

  1. Record Met Message Data — Enter date/time, line numbers, wind direction/speed, octant, and other met message details.
  2. Input Battery and Target Data — Note altitudes, chart ranges, directions of fire.
  3. Calculate Wind Components — Determine range wind (head/tail) and crosswind (left/right).
  4. Apply Variations from Standard — Record deviations in temperature, density, projectile weight, etc.
  5. Compute Corrections — Use TFTs or appropriate tables for range, deflection, and fuze corrections (vowel rule or RATT method recommended).
  6. Determine Total Corrections — Sum met and other corrections for final adjusted firing data.
  7. Verify and Apply — Cross-check computations before issuing fire commands.

Pro Tips: Print on 8.5 x 17 paper if needed for full layout. Always reference current TC/FM publications for detailed procedures.

  • DA Form 3675: Ballistic Met Message
  • DA Form 2601-1/2601-2: Met Data Correction Sheets for Mortars
  • FM 6-40: Tactics, Techniques, and Procedures for Field Artillery Manual Cannon Gunnery (detailed met techniques)
  • Technical Circulars (TC) referenced on the form for specific instructions

Download Official DA Form 4200

Access the most current fillable/official version directly from the US Army Publishing Directorate:

Download DA Form 4200 PDF Here

Always use the official source for training and operations to ensure compliance.

Best Practices for US Army Artillery Units

  • Train regularly on both vowel rule and RATT methods for flexibility.
  • Combine with automated systems for cross-verification.
  • Maintain situational awareness of met conditions and update frequently.
  • Document all computations clearly for after-action reviews.

Proper use of DA Form 4200 enhances lethality, safety, and mission effectiveness in field artillery operations.

For the latest doctrine, consult your unit FDC manuals, TRADOC publications, or armypubs.army.mil. This form remains a foundational tool for accurate artillery fire support across the US Army.