Owner Resources

AOG — Aircraft on Ground: What It Means and How to Get Back in the Air Fast

AOG — Aircraft on Ground — is every pilot's least favorite situation. Here's what it means, what typically causes it, and how Paragon Flight's on-site parts inventory gets you back flying faster.

Published March 28, 2026
Paragon Flight Maintenance Team

What Does AOG Mean in Aviation?

AOG stands for Aircraft on Ground — a term used throughout aviation to indicate that an aircraft is grounded due to a mechanical issue that prevents it from flying safely. An AOG situation requires immediate attention from a qualified A&P mechanic and, in many cases, specific parts that may not be readily available.

Definition: AOG (Aircraft on Ground) is an aviation maintenance status indicating that an aircraft cannot fly due to a mechanical defect, missing part, or airworthiness issue. The term is used to signal urgency — the aircraft is out of service until the issue is resolved.

What Causes AOG Situations?

AOG situations can arise from a wide range of issues, including:

  • Flat or damaged tire — one of the most common AOG causes in general aviation
  • Dead battery — especially in aircraft that sit for extended periods
  • Brake failure — worn or failed brake components
  • Burned-out navigation or landing lights — required for night flight
  • Oil filter or fuel filter issues — contamination or blockage
  • Magneto failure — rough engine or no-start condition
  • Alternator failure — loss of electrical power in flight

How Paragon Flight Handles AOG Situations

Because Paragon Flight operates a large fleet of piston aircraft, we stock many of the most common AOG parts at all three of our facilities — including:

  • Tires (Cessna, Piper, Beechcraft main and nose gear sizes)
  • Brakes and brake pads
  • Oil filters and air filters
  • Batteries
  • Navigation and landing lights

This on-site inventory means that for many common AOG situations, we can have your aircraft back in the air the same day — without waiting days for parts to ship from a distributor.

What to Do If Your Aircraft Is AOG

  1. Do not fly the aircraft — if you've identified a mechanical issue, the aircraft is grounded until it is inspected and repaired by a qualified A&P
  2. Contact a mechanic immediately — call Paragon Flight at (239) 274-3170 and describe the issue; we can often advise you over the phone and schedule a same-day visit
  3. Document the issue — note when the problem was first observed, any unusual sounds, smells, or instrument readings
  4. Check your insurance — many aircraft insurance policies include coverage for AOG-related expenses

Paragon Flight stocks common AOG parts at all three locations. Call (239) 274-3170 for fast turnaround at KFMY, KPGD, or KLGC.

Frequently Asked Questions