Aircraft on ground (AOG) / Global emergency maintenance (GEM)

We understand that unplanned maintenance needs can be costly and inconvenient. Rather than have inoperable aircraft, let our Global emergency maintenance team — available 24/7/365 — come to you. We'll have you back in the air in no time at all. Our capabilities include:

  • Borescope inspections
  • Aircraft damage assessment
  • Airframe structural repairs
  • Composite repairs
  • Sheet-metal repairs
  • Hydraulic system repairs including line fabrication
  • Aircraft taxiing, towing, jacking and recovery
  • Non-routine airframe systems failures, all ATA chapters
  • Non-routine engine issues and troubleshooting, all ATA chapters
  • Engine changes

GEM Login

Customers with a GEM can view the current status of their aircraft. Please ask your United Technical Operations Representative to provide you with a GEM ID and password.

Agency approval

  • CAAC
  • CAAS
  • CASA
  • DAC
  • DGCA
  • EASA
  • FAA
  • GCAA
  • JCAB
  • KCASA
  • NCAA
  • UAEAC

Approvals vary by location

Helpful links

Line maintenance information
Map of airports served worldwide