How WestJet Airlines Delivered
Complex Fleet Projects with STS

Major Programmes

6

Aircraft Supported

63

Aircraft Type

4

About WestJet Airlines

North American Airline WestJet operates a mixed fleet of over 150 aircraft, including Boeing 737s, 787 Dreamliners and regional Q400 turboprops.

Project Background

WestJet Airlines was focused on optimising its fleet and strengthening operational efficiency during a key phase of organisational change. With limited internal capacity and a growing volume of aircraft activity, WestJet engaged STS to support high priority technical programmes and ease documentation and lessor demands.

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Technical Delivery at Scale: Inside an 18-Month Airline Support Programme

Overview:

STS provided technical expertise across multiple high-impact fleet projects, including sale-leasebacks, aircraft sales, inductions and post-acquisition integration. Working alongside internal technical operational teams, STS ensured regulatory compliance, reduced lessor friction and kept complex programmes on track under tight timelines.

Key Challenges Faced:

  • Limited internal capacity during intense periods of aircraft transitions, inductions and disposals, impacting overall efficiency.
  • Tight sale/leaseback timelines required rapid preparation of technical documentation and delivery packs.
  • High complexity driven by multiple aircraft types, diverse lessor requirements and concurrent fleet changes.
  • Post-acquisition integration of aircraft from a regional subsidiary demanded structured technical coordination.
  • Need for flexible resourcing, with the ability to scale support and provide expert input on an ad hoc basis.

STS Solutions Implemented:

Technical support across five major fleet projects, working as an extension of the client’s internal team. Each required precision, speed and coordination across multiple stakeholders.

  • Sale-Leaseback Support (20 Aircraft) - Compiled key documentation, prioritised lessor requirements and provided ongoing support as deals progressed.
  • Cargo Fleet Transition (4 Aircraft) - Prepared aircraft documentation ahead of potential transition, delivering readiness under tight timelines.
  • Q400 Fleet Sale (12 Aircraft) - On-site support for regional fleet sale, managing delivery packs, documentation and buyer engagement over a 10–12 month period.
  • 737MAX Induction (9 Aircraft) Led technical due diligence and fleet entry prep across four lessors, avoiding delays and minimising rework.
  • Fleet Integration Support (18 Aircraft) - Developed full transition bibles to support the integration of acquired aircraft following a fleet merger, enabling efficient absorption into the mainline operation.
  • Fleet Maintenance Documentation Audit - Supported the audit and scanning of maintenance records for digitisation into the airline’s central documentation repository.
“STS brought a clear understanding of what matters to lessors, which helped us avoid wasted effort and focus on the critical items. Their structured approach and dedicated support ensured our documentation was ready from day one and transitions moved faster.”
Ashlee Tanner
Ashlee Tanner​ Senior Manager, Aircraft Engineering Programs WestJet Airlines​
“STS provided an immediate response and proved their ability to pivot while managing multiple projects across 63 aircrafts – an impressive achievement. They were able to seamlessly merge as an extension to our team, understood exactly what we needed and delivered with professionalism throughout. We look forward to continuing and strengthening our partnership.”
Rabieh Habr
Rabieh HabrDirector of Engineering & Technical Services at WestJet Airlines

STS Approach and Differentiators

STS delivers specialist technical services designed to support complex fleet and asset management needs. With deep insight into lessor requirements, STS helps clients focus on what truly matters. We eliminate wasted effort on non-critical items and streamline documentation from day one, ensuring
faster approvals and smoother transitions. Our consultants work exclusively on assigned programmes, providing focused, distraction-free delivery.

Responsiveness is at the core of our approach. We engage in real time with all stakeholders to keep momentum high and timelines on track. Our team follows a consistent, professional method of communication and issue resolution, helping reduce delays and friction. STS also offers the ability to scale resourcing flexibly and resolve technical or contractual items quickly, drawing on both regulatory knowledge and hands-on experience.

STS, a trusted extension of your Technical Services Team,
on-demand when you need us.

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