Pratt & Whitney Canada PW901A/C

Custom Solutions, One-Stop ServiceH+S Aviation Ltd, a StandardAero company, is a Pratt & Whitney Canada Designated Overhaul Facility (DOF) for the PW901A and PW901C auxiliary power units (APUs).

First appointed as a PW901 Worldwide Centre of Excellence in 1993, and today one of only three PW901 DOFs worldwide, H+S Aviation offers customers a comprehensive range of services, including:

  • Full MRO capability at H+S Aviation's Portsmouth, UK facility
  • Full access to Pratt & Whitney Canada technical support and documentation
  • Full OEM warranty processing
  • Full access to the Pratt & Whitney Canada rental bank
  • Coordinated repair development with OEM authorization

Fast Turns To Get You Back In Service – Your PW901 APU will be returned to service quickly from our shop floor to the flight line. To reduce engine downtime, we have optimized the process flows throughout our facilities for maximum efficiency.

Additionally, we focus on developing repair processes to restore your components to OEM specifications, reducing the need for expensive new replacement parts. While your PW901 is in our shop, one of our dedicated staff will keep you informed about its progress so you can make quick, confident maintenance decisions.

Dedicated Field Service Teams available 24/7 – Unlike most MRO providers, H+S Aviation doesn't pull technicians from the shop floor to assist your AOG event. We have dedicated Field Service Teams trained, equipped, and authorized to provide troubleshooting, emergency warranty, and maintenance services 24 hours a day, anywhere in the world. If you can't come to us, we will come to you!

For AOG situations and emergency troubleshooting, please call us at +44 (0)23.9230.4000

Service Highlights:

  • Pratt & Whitney Canada PW901A/C APU Designated Overhaul Facility (DOF)
  • Dedicated 2,000 m2 APU repair facility located in Portsmouth, UK
  • OEM-correlated test cells
  • Rental APUs and exchange units available
  • In-house component repair capabilities
  • AOG parts support
  • OEM warranty repair
  • Global support network
  • Technical support

Repair Certifications & Authorization

  • FAA Repair Station Certification: AE0R215N
  • UK CAA Part 145 Approval Certificate # UK.145.00243
  • EASA 145 3rd Country Approval Certificate # EASA.UK.145.00243
  • US FAA Air Agency Certificate # QD1Y422K
  • ISO 9110:2018 Certified
  • ISO 14001:2015 Certified


  • Boeing 747-400, Boeing 747-8