MARCHARBI21-104 — Foreign Object Damage (fod) Prevention Program Dropped Object Prevention (dop) Program

MARCHARBI21-104 governs the Foreign Object Damage Prevention Program and Dropped Object Prevention Program at March Air Reserve Base.

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  • Publication number: MARCHARBI21-104
  • Title: FOREIGN OBJECT DAMAGE (FOD) PREVENTION PROGRAM DROPPED OBJECT PREVENTION (DOP) PROGRAM
  • Date: 2017-07-12

View MARCHARBI21-104 on armypubs.army.mil


It covers FOD prevention responsibilities, jet engine protection, aircraft towing and taxi operations, parts control, maintenance practices, personal items, vehicles, incident procedures, FOD walks, and committee meetings. It also establishes dropped object prevention responsibilities, reporting procedures, training, investigations, and corrective actions.

Applies to: This Instruction applies to March Air Reserve Base Units, Tenants and the Air National Guard (ANG) Units except where noted otherwise) who prepare, manage, review, certify, approve, disseminate and/or use official Air Force Instructions., Air National Guard (ANG), except where noted otherwise Base.

Topics covered

  • Jet engine FOD prevention
  • Aircraft towing and taxi FOD prevention
  • Parts control
  • Maintenance practices
  • Personal items on the flight line
  • FOD incident procedures
  • Dropped object prevention
  • FOD walks and areas of responsibility

Questions and answers

When must aircraft engine inlet, exhaust and pitot covers be installed?

Aircraft engine inlet, exhaust and pitot covers shall be installed for any aircraft not scheduled to fly within 48 hours or as directed in applicable technical orders. (paragraph 5)

What must happen before entering an aircraft engine inlet or exhaust?

A protective mat must be in place prior to any entrance into an engine inlet. All jewelry and Restricted Area badges will be removed and pockets emptied of all contents prior to entrance into engine inlet/exhaust. A pocket-less, zipper-less, button-less “bunny” suit will be worn whenever physical entry into an aircraft intake/inlet or exhaust is required. (paragraph 5)

What FOD inspections are required around ground maintenance runs?

Prior to and after ground maintenance runs and any engine inlet and exhaust maintenance, the inlet and exhaust will receive a FOD inspection. Inlet and exhaust inspections will be documented with a Red X symbol in the AFTO Form 781A/appropriate aircraft forms. (paragraph 5)

What personal items are prohibited on the flight line?

Wigs, hairpieces, metal hair fasteners, earrings or any other jewelry that may fall off without notice are not authorized on the flight line. (paragraph 9)

What must happen after a bird strike to an engine intake area?

Upon discovery of a bird strike to an engine intake area, a Red X entry will be placed in the aircraft forms, requiring an inlet inspection by a qualified technician. Particular attention is required to the leading edges of first stage compressor blades (N2). The 452 MOS/MOC, 452 AMW Flight Safety office, SSI/OSAA (Airfield Management), 452 MXG QA/FOD Program Monitors must be notified.

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