DAFI21-101_AMCSUP_437AWSUP — Aircraft And Equipment Maintenance Management

DAFI21-101_AMCSUP_437AWSUP governs aircraft and equipment maintenance management processes and procedures unique to Joint Base Charleston.

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  • Publication number: DAFI21-101_AMCSUP_437AWSUP
  • Title: AIRCRAFT AND EQUIPMENT MAINTENANCE MANAGEMENT
  • Date: 2025-09-03

View DAFI21-101_AMCSUP_437AWSUP on armypubs.army.mil


The publication establishes requirements for cyber hygiene, FMXC2 access, accident prevention, and hearing protection during maintenance activities. It requires authorized hearing PPE, hearing protection within cordons, and specified access and training authorizations.

Applies to: This publication applies to all JBC civilian employees and uniformed members of the Regular Air Force, the Air Force Reserve, and those who are contractually obligated to comply with DAF publications.

Topics covered

  • Cyber hygiene
  • FMXC2 system access
  • Accident prevention
  • Knock It Off cards
  • Hearing protection
  • Maintenance safety

Questions and answers

What training must remain current for personnel dispatched to maintenance areas?

All base agencies dispatched to aircraft runway, taxiway, parking apron, or maintenance areas will adhere to proper cyber hygiene by ensuring all annual computer security training remains current.

What form is required for FMXC2 system access?

Personnel requiring access to the FMXC2 system will fill out a DD Form 2875, System Authorization Access Request (SAAR), and then email a digitally signed DD Form 2875 to their supervisor to digitally sign.

Who can authorize training screen updates in FMXC2?

Flight training monitors and unit training managers must have written authorization from the Chief of Maintenance Training to update training screens.

What must supervisors do before maintenance activity begins?

Supervisors will ensure that any problems are addressed and corrected prior to the start of any activity.

Who should carry a Knock It Off card?

Personnel performing, supervising, evaluating, or supporting logistics actions should carry a “Knock It Off” card (Attachment 15) on their person at all times.

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