Glossary
AOG (Aircraft on Ground)
AOG (Aircraft on Ground) is the highest-priority situation in aviation maintenance, where an aircraft is grounded and cannot fly until a specific part is sourced and installed. Every hour of downtime can cost an operator from 10,000 to over 100,000 dollars depending on aircraft type, so an AOG request expects an answer in minutes, not hours. Most parts suppliers run a dedicated 24/7 AOG line, and buyers pay premium prices for immediate availability.
Also known as: aircraft on ground, AOG desk