RAF OASC Preparation: Tests, Interviews & Assessments (2026)

Our RAF OASC PrepPack is designed to give you complete preparation for the interview, leadership, and role play assessments at the RAF Officer and Aircrew Selection Centre (OASC).

• 3 Full OASC Interview Simulations: Three realistic 12-question mock OASC interviews tailored to your chosen RAF branch, complete with AI-generated feedback on your motivation, branch knowledge, RAF training pipeline understanding, defence and current affairs awareness, and leadership, teamwork, and resilience examples.
• 3 OASC Leadership & Role Play Practice Sessions: Realistic practice for the Group Discussion, Group Planning, Leaderless Exercise, Command Situation Exercise, and Individual Planning Exercise, designed to develop the leadership, communication, and decision making skills assessed at OASC.
• 4 In-Depth Study Guides: Four comprehensive guides covering how to ace the OASC interview, common interview questions, the core competencies assessed by the board, and strategies for the leadership and role play exercises.

You'll prepare for the most challenging parts of the RAF OASC with realistic practice, structured guidance, and expert resources, giving you the confidence to demonstrate the qualities the RAF is looking for and perform at your best on selection day.

The OASC RAF - the Officer and Aircrew Selection Centre at RAF Cranwell - is the Royal Air Force's formal assessment hub for selecting future Officers and Non-Commissioned Aircrew (NCA). It's the most comprehensive stage of the RAF officer selection process.

Not all RAF applicants attend OASC as the selection pathway differs depending on which category you apply for.

• Officers, including Pilots, Intelligence Officers, and Medical Officers, are responsible for leadership and operational decision-making. All Officer applicants must attend OASC, which involves leadership exercises and an interview.
• Non-Commissioned Aircrew, such as Weapon Systems Operators and linguists, also attend OASC for leadership exercises and an interview, along with specialist aircrew testing.
• Airmen and Airwomen typically serve in ground-based or technical roles and don’t attend OASC. Instead, selection is done through role-specific testing and interviews.
• The RAF Regiment, responsible for force protection and airfield defence, sees Officer applicants attend OASC, while non-officers follow the airmen recruitment process.

OASC does not occur at the beginning of the RAF officer selection process. Instead, candidates attend only after successfully progressing through earlier stages, which typically include the initial application and eligibility screening, a filtering interview, a medical examination, and aptitude testing via the DAA or CBAT (role-dependent).

By the time you reach OASC, you’ve already demonstrated basic suitability, and the focus is on assessing your potential to lead and operate effectively within the RAF.

The RAF OASC is best understood as two distinct phases.

For candidates on aptitude-based branches, the first is an aptitude test held at RAF Cranwell, before you're invited back for leadership exercises and a formal interview. Other candidates complete this earlier stage via the DAA instead, before ever reaching OASC.

If you haven't yet sat your aptitude test, visit our RAF DAA and RAF CBAT pages to find out which applies to your branch.

This page focuses on the second phase, since it's the part virtually every OASC-bound candidate goes through regardless of route. Rather than testing technical knowledge, OASC evaluates your abilities, behaviours, and decision-making under pressure, assessed across several areas:

• Leadership and teamwork: Initiative, influence, group contribution, and problem-solving under pressure
• Communication skills: Clarity, confidence, and effectiveness in presenting ideas and responding to questions
• Motivation for military service: Understanding of the RAF, your branch, and service life
• Awareness of defence and current affairs: Knowledge of military operations, global security, and air power
• Physical fitness: Meeting operational benchmarks alongside leadership performance

These areas are assessed through a combination of planning exercises, competency-based interviews, and fitness assessments over the course of the programme.

Preparation across every stage of the RAF application process is essential, from the earlier aptitude stage through to the leadership exercises and interview at OASC itself. Candidates are assessed under strict time pressure and sustained scrutiny throughout..

Many applicants find the interview and leadership stages particularly challenging, as these demand quick thinking, clear communication, and the ability to perform under observation. The earlier aptitude stage (CBAT or DAA, depending on your branch) brings its own pressures too, and is worth preparing for in its own right.

Structured practice with realistic materials can significantly improve your confidence and performance.

Our RAF OASC PrepPack brings together mock interview simulations, leadership and role play practice, and in-depth study guides, helping you prepare for the leadership and interview stages of OASC in one place.

The RAF doesn't publish an official RAF OASC pass rate, and there is no fixed score that guarantees progression. OASC is a competitive selection stage where candidates are assessed holistically across multiple performance areas.

Reaching OASC in the first place depends on passing the earlier aptitude stage. Once at OASC, results from leadership and planning exercises, the formal interview, and the fitness assessment all contribute to the final recommendation. Strong, balanced performance across these elements is essential, as doing well in just one area is rarely enough to progress.

Because the RAF evaluates multiple competencies and career pathways, consistent performance across the board significantly improves your chances of success at OASC.

Preparation for OASC should be structured and deliberate, focusing not just on individual tasks but on the combination of skills the RAF assesses.

Below are key steps that candidates can take to build confidence, improve performance, and enter OASC in the best possible shape:

• Practise aptitude fundamentals: If you haven't yet sat your CBAT or DAA, mental arithmetic, verbal, and spatial reasoning, including elements like the speed, distance, and time test, are worth building early, since this stage happens before OASC itself.
• Improve structured problem‑solving: OASC exercises and interviews require you to break down complex problems logically and justify decisions clearly. Practising case studies supports both planning exercises and interview performance.
• Conduct mock interviews: Prepare answers to common OASC interview questions using the STAR method and rehearse them aloud to improve clarity and confidence.
• Build military awareness: Officers are expected to demonstrate motivation and situational awareness. Follow defence news and understand the RAF’s current operational role.
• Train for fitness standards: Physical fitness forms part of the OASC assessment. Incorporate cardiovascular, core, and upper-body training and practise under timed conditions.
• Practise coordination and multi‑tasking drills: Aircrew pathways demand strong hand–eye coordination and sustained attention. Targeted drills can help build these skills.

These steps are essential for candidates aiming to succeed in RAF officer selection at OASC Cranwell. Consistent preparation not only boosts performance in individual tests but also improves your overall readiness for the integrated nature of OASC.

Our RAF OASC PrepPack covers the leadership, role play, and interview preparation above in far more depth, with added boosters if you want to strengthen your CBAT-style aptitude performance too.

Founded in 1992, JobTestPrep has built over three decades of experience helping candidates navigate competitive recruitment processes, including thousands preparing for the British Armed Forces and Royal Air Force. Our preparation materials are developed by experts and regularly updated to reflect the latest test formats, helping candidates approach every stage with greater confidence. With more than 220 preparation courses and over one million candidates supported worldwide, we offer professionally designed PrepPacks alongside advanced tools, including our AI-powered CV Analyser and Interview Prep platform. Together, these resources help candidates across the UK and globally strengthen their applications, improve their performance, and achieve outstanding results.