🕵️ EVIDENCE, NOT ASSUMPTIONS 🔍
Evidence-or-assumption, triage the incident, build your investigator kit — decide like real investigators do.
A genuine AAIB report is bundled in — at the end you compare YOUR findings against the professionals'.
Most of today happens at your tables: evidence, hypotheses, conclusions, and a final presentation.
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🗣️ Your three magic questions: "What do we actually know?" · "What evidence supports that?" · "What might we be missing?"
"Aircraft Investigation Day" — 4 sessions and a team investigation. Counts towards Badge 1.
The full 10-lesson investigation course — structured and progressive. Badge 1 in depth.
Badge 2–5 pathway activities — and at Stage 3, an AAIB partnership.
By 4pm your team will have investigated a real-style incident and presented your findings.
🛬 "An aircraft lands, overruns the runway, and is damaged.
No injuries."
What do you think caused it?
Shout out every idea —
we'll write them ALL up
Today's objective:
role · method · mindset
Keep the list —
we return to it at the end
🎯 "The goal is safety, not punishment."

AAIB official — "What we do" · All their reports: gov.uk/aaib
💬 After: which part of their job would YOU want?

👥 Team assembled — specialists in engineering, operations, human factors
🧳 Ask the room: you're deploying — what do you take? (shout-outs first!)
📷 Cameras · 📓 Notebooks · 📏 Measuring tools · 🦺 PPE — gloves & high-vis
🎯 First jobs on arrival: secure the scene, coordinate with emergency services, agree the plan
💡 "Even if nobody saw what happened, the aircraft did — and it recorded it." Tap each source:
Vox — "Airplane black boxes, explained" · Pilot's view: Captain Joe youtube.com/watch?v=lPiWlBG16Wo
💬 Ask after: why TWO recorders instead of one?

⏱️ Timeline — what happened first?
🗂️ Categories — human / technical / environment
🔗 Linking — how is it all connected?
❌ Elimination — what can we rule OUT?
CAUSE → what directly led to the incident
CONTRIBUTING FACTORS → what made it more likely
…and then: does this lead to a recommendation?

Only made if they improve safety — never to fill space. Sentence starters:
💬 "We recommend that…"
💬 "To prevent this happening again…"
💬 "This could be improved by…"
💬 "A safer approach would be…"
✈️ Aviation is safe because incidents are studied
🔎 Small incidents prevent major accidents
📚 Safety improves through learning, not blame
📞 "Shortly after take-off, a pilot reports engine vibration and returns safely."
🕵️ You are now the BYP Accidents Investigation Branch.
🚨 You've been assigned to an incident at this airfield.
Remember: you don't know the cause yet!
C42 at Headcorn Aerodrome, Kent. Smoke after take-off.
🔥 electrical? engine? something burning?
Light aircraft runway excursion at Old Sarum Airfield.
🌬️ wind? technique? something jammed?
PA-28 engine roughness — fuel contamination suspected.
⛽ water in the fuel? where from?
Light aircraft heavy landing after an unstable approach at Shoreham.
🛬 why was the approach unstable?

📝 Everything goes on the worksheet — it becomes your team's case file and feeds your final presentation.
🗂️ Sections follow the investigation process — fill them in order, no skipping to conclusions!
🧪 Rule of the session: at least TWO hypotheses before you're allowed a favourite.
What directly led to the incident — one clear sentence, backed by evidence.
What made it more likely — human, technical, environmental.
"We recommend that…" — specific, actionable, and only if it improves safety.
What stuck? Evidence-first, six steps, cause vs contributing…
Honest feedback — which session, which activity?
How would you approach the next mystery — in aviation or anywhere?
Would you do more investigations? (Badge 2 is watching…)
Today you investigated like the professionals:
evidence gathered, hypotheses tested, conclusions defended — no assumptions.
🧠 The mindset is yours now
"What do we actually know?" works everywhere
📄 Read real reports
gov.uk/aaib — every investigation is public
🎖️ Keep going with BYP
Wings · A320 Day · ATC Day · Badge 2 ahead
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