621CRWI21-101 — Aircraft and Equipment Maintenance Management

621CRWI21-101 governs aircraft and equipment maintenance management, including procedures for maintaining, servicing, and repairing them.

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  • Publication number: 621CRWI21-101
  • Title: Aircraft and Equipment Maintenance Management
  • Date: 2024-11-05

View 621CRWI21-101 on armypubs.army.mil


621CRWI21-101 addresses aircraft grounding, ramp inspections, dropped object reporting, and flying crew chief feedback and risk assessment. It requires specified communications, inspections, documentation, corrective actions, and reporting.

Applies to: This publication is applicable to all AMC units and Air Force Reserve Command (AFRC) and Air National Guard (ANG) upon mobilization, and/or AMC-led classic AFRC and ANG associations.

Topics covered

  • Aircraft grounding
  • Ramp inspection program
  • Dropped object reporting
  • Flying crew chief performance feedback
  • Flying crew chief operational risk management
  • Mission profiles
  • Aircraft tail numbers

Questions and answers

How must aircraft grounding events be communicated to deployed weapon systems?

Communication of a grounding, or a potential grounding event (TCTO, OTI, PM event) to weapon systems operating in a deployed environment and/or under the authority of an operational command must follow the grounding procedures outlined in DAFMAN 11-401 and 63-101/20-101.

What must inspectors do when a ramp inspection item is marked as a discrepancy?

If an item is marked "Minor Discrepancy" or "Unsatisfactory," the inspector will ensure that all entries made in the remarks block are legible and sufficiently detailed to describe the discrepancy and corrective action taken.

How are ramp inspection discrepancies corrected or carried forward?

The discrepancies should be corrected and documented according to the airline maintenance manual or carried forward according to an approved MEL.

What is the FCC ORM Worksheet used for?

The FCC ORM Worksheet is used to assist in determining the level of risk of an FCC operation.

What information must be included when a dropped object is reported?

Costs in dollars to repair or replace dropped object and any collateral aircraft damage as appropriate and cost in man-hours to repair. (paragraph 1-6)

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