Collins Aerospace, the original equipment manufacturer (OEM) of ACES ejection seats, offers expert maintenance, repair and overhaul (MRO) services by engineers and technicians specifically trained on ACES II seats. As the OEM, Collins is the only organization authorized to provide a Certificate of Conformity (CoC) for each repair.

Aftermarket parts and MRO services

ACES II ejection seat


  • Guaranteed OEM original certified parts
  • Component parts repair
    • STAPAC
    • Inertia reels
    • Seat height actuators
    • Oxygen manifolds
    • Oxygen bottles


  • Seat inspection, teardown and analysis
  • Minor repairs
  • Major repairs
  • Upgrades
  • Overhaul
  • Time compliance technical order (TCTO) implementation


  • Over 75 dedicated ejection seat engineers
  • OEM-trained and experienced technicians
  • Brand new state of the art 65,000 sq. ft. building in Colorado Springs
  • MRO shop with increased capacity and efficiencies
  • Dedicated customer-facing staff for MRO services
  • All repairs come with a Collins Certificate of Conformity (CoC)