AF Form 4100: KC-135 LOAD PLANNING WORKSHEET

AF Form 4100: KC-135 LOAD PLANNING WORKSHEET – AF Form 4100, officially titled the KC-135 Load Planning Worksheet, is a critical document used by U.S. Air Force personnel for configuring the KC-135 Stratotanker aircraft. This form supports safe, efficient, and compliant load planning for cargo, passengers, and mission equipment on this versatile aerial refueling platform.

Air Force load planners, Quality Assurance (QA) technicians, Boom Operators, and maintenance teams rely on AF Form 4100 to document aircraft configurations before deployments or operations. It ensures accurate weight and balance calculations when combined with other essential forms like DD Form 365-3 (Chart C) and DD Form 365-4 (Weight and Balance Clearance Form F).

What Is the KC-135 Stratotanker and Why Does Load Planning Matter?

The KC-135 Stratotanker serves as the backbone of U.S. Air Force aerial refueling operations, enabling extended range for fighters, bombers, and transport aircraft worldwide. As a dual-role platform, it can carry limited cargo and passengers in its main deck compartment while primarily functioning as a tanker.

Proper load planning is essential for:

  • Maintaining center of gravity (CG) limits to prevent tipping during ground operations (typically forward of 35% Mean Aerodynamic Chord during loading/unloading).
  • Ensuring structural integrity with 463L pallets (max 6,000 lbs gross weight per pallet recommended in training contexts).
  • Complying with cargo compartment dimensions (approximately 840 inches long, 129 inches wide, 84 inches high, from fuselage station ~440-1120).
  • Supporting mission flexibility, including temporary equipment installations without permanent Chart C updates.

The peacetime planning allowable cabin load (ACL) for the KC-135 is approximately 30,000 lbs, with maximum takeoff weight around 322,500 lbs. Accurate documentation prevents delays, ensures safety, and optimizes fuel efficiency.

Purpose of AF Form 4100

AF Form 4100 (dated 1 March 1999 in its IMT version) or an equivalent computer-generated worksheet is mandated for planning and documenting KC-135 configurations. Key uses include:

  • Documenting the location, weight, and moment of additive equipment, cargo, and personnel.
  • Serving as a temporary weight and balance change record for items not permanently entered on Chart C.
  • Providing a reference for Boom Operators to validate loads and complete final weight and balance forms.
  • Accompanying aircraft to off-station locations (two copies required): one filed with Chart C, the second for verification and redeployment planning.

Quality Assurance initiates the form based on mission tasking or standard configurations. The Boom Operator holds primary authority for cargo location, restraint, and airworthiness checks. Off-station units must report any configuration discrepancies back to the originating unit.

This form integrates with broader Air Force load planning processes, including the Integrated Computerized Deployment System (ICODES) for automated plans and references like T.O. 1C-135-9 (KC-135 Cargo Loading Manual) and AFMAN 11-2KC-135, Volume 3, Addenda A (C/KC-135 Aircraft Configuration).

How to Use AF Form 4100? Key Sections and Process

While the exact block-by-block layout is detailed in the official PDF, the worksheet typically captures:

  • Aircraft tail number.
  • Configuration details for additive equipment (e.g., 21 equipment or Alternate Mission Equipment).
  • Weight and moment calculations for each item.
  • Totals to be added to the aircraft’s basic weight/moment from Chart C.
  • Signatures from QA Weight & Balance Technicians, AME sections, and validators upon completion.

Step-by-Step Process (per official guidance):

  1. Initiation — QA develops the AF Form 4100 based on mission requirements or standard configurations, annotating the specific aircraft tail number.
  2. Data Input — Provide current weight, cube, and dimension data for all items. Weight & Balance Technicians calculate and annotate weight/moment changes.
  3. Distribution — Transmit to Maintenance Operations Center (MOC) for execution by production supervisors, crew chiefs, or AME sections.
  4. Loading and Validation — Maintenance loads equipment per the worksheet. Upon completion, validate positioning and restraints. Signatures are required from involved parties (e.g., AME and W&B Technician).
  5. Filing and Travel — Place a signed copy on top of Chart C in the aircraft’s supplemental Weight and Balance Handbook. A second copy travels with the aircraft for off-station use.
  6. Post-Mission — Remove temporary configurations and update records as needed. Notify originating units of discrepancies.

The form can also support restraint computations when paired with AF Form 4112 (KC-135 Restraint Computation Worksheet). Always cross-reference with aircraft-specific technical orders for pallet contouring, shoring, hazardous cargo rules, and tie-down limits.

Download the Official AF Form 4100 PDF
Access the current blank form directly from the U.S. Air Force e-Publishing site:
https://static.e-publishing.af.mil/production/1/af_a3/form/af4100/af4100.pdf

This is the authoritative source for USAF personnel. Computer-generated equivalents are authorized when they capture the same data.

  • DD Form 365-3 (Chart C): Basic Weight and Balance Record.
  • DD Form 365-4 (Form F): Weight and Balance Clearance.
  • AF Form 4112: KC-135 Restraint Computation Worksheet.
  • AF Form 4075: Aircraft Load Data Worksheet (in some contexts).
  • Key Publications:
    • AFMAN 11-2KC-135 Volume 3 and Addenda A (Aircraft Configuration).
    • T.O. 1C-135-9: Cargo Loading Manual.
    • Defense Transportation Regulation (DTR) Part III, Appendix V (broader load planning guidance, including DD Form 2130-14 for KC-135 pallet positions).

For full mission planning, consult your unit’s QA, Weight & Balance program managers, or Air Mobility Command resources. Training for load planners often emphasizes these tools through courses like the Airlift Planners Course.

Best Practices for KC-135 Load Planning

  • Use shoring for heavy or concentrated loads to protect the plywood cargo floor.
  • Ensure hazardous materials are accessible and properly restrained.
  • Maintain CG within limits during all ground handling.
  • Validate configurations against mission tasking to avoid loading delays.
  • For deployments, integrate with ICODES where possible, falling back to manual forms like AF Form 4100 when needed.

Accurate use of AF Form 4100 contributes directly to flight safety, mission success, and the KC-135’s legendary reliability in supporting global operations.

Note: Always verify the latest guidance in official Air Force publications at e-Publishing.af.mil, as procedures may be updated. This article is for informational purposes and does not replace formal training or directives. U.S. Air Force personnel should consult their chain of command, QA, or standardization offices for unit-specific implementation.