GTCP 331-200 Engine


The first electronically controlled Auxiliary Power Unit (APU) in the world, Honeywell’s 331-200 series represented a breakthrough in engine development and manufacturing. Delta TechOps has serviced these APUs since 1984.


Modification, Repair and Overhaul

1st Run Warranty Repairs

Repair Service for Engine Components 

  • Electronic Engine Control (EEC)
  • Line Replaceable Units (LRUs) including Quick Engine Change (QEC) and basic engine parts

On-Wing Support

APU Condition and Trend Monitoring

Non-Destructive Testing and Diagnostics

Engineering Support

AOG Support worldwide, 24/365 – Available to Customers

Provisioning of Lease APU and Spare Parts through Delta TechOps’ Inventory Exchange Support

Customized Complete Fleet™  Programs

ISO 9001 Certification

FAA/EASA Dual Release Capability

FAR Part 145 and Part 121 Repair Authority