Airprox 2024294 – What Actually Happened?

On the night of 22 November 2024 at 21:51 UTC, a National Police Air Service (NPAS) EC135 helicopter operating near RAF Lakenheath reported multiple “drones” manoeuvring around it. In reality, the objects were USAF F15 fighters engaged in authorised night training in Class G airspace (surface–FL150), coordinated by Lakenheath Approach (“Overlord”).

Summary of Key Facts:

• Closest Point of Approach (CPA): 1 NM horizontal / 1900 ft vertical separation (recorded).
• ATC Services:
  • EC135 – Basic Service (no traffic information guaranteed).
  • F-15s – Traffic Service (received information about the EC135).
• Misidentification Factors:
  • EC135’s TCAS did not display the F-15s.
  • F-15 lighting did not resemble standard civil aircraft lighting.
  • The crew believed the lights were drones due to their apparent behaviour and lack of TCAS confirmation.

The UK Airprox Board (UKAB) concluded that there was no risk of collision (Risk Category E) and attributed the report to misidentification and situational awareness breakdown rather than unsafe flying.

Why This Matters to Drone Operators

1. Misidentification Risk

Even experienced police aircrew using EO/IR cameras mistook military jets for drones. This shows how easily drone operators can be blamed for aerial events they weren’t involved in.

2. Electronic Conspicuity Limitations

The EC135’s TCAS did not detect the F-15s despite them squawking Modes A and C. This highlights the ongoing limitations of EC systems in complex or mixed-use airspace, particularly at night.

3. ATC Service Levels – Know the Difference

Under a Basic Service, ATC is not required to provide traffic information. Drone operators should consider requesting a Traffic Service or Deconfliction Service for BVLOS, urban, or sensitive operations.

Public Perception: A Persistent Challenge

• “Drone blame” is the default: Unidentified lights in the sky are often assumed to be drones, fuelling public concern and regulatory overreaction.
• Poor understanding of airspace rules: The public often assumes ATC sees and controls everything — which is untrue in Class G.
• Coordination gaps: The police helicopter tasking was not pre-notified to the USAF. This shows the need for better operational coordination.

Risk Assessment for UK Drone Operations

Potential Scenarios and Risk Levels:

• Misidentification by other aircraft:
  • Likelihood: Medium
  • Severity: Low to Medium
  • Risk Level: Moderate overall, but High reputationally
• No traffic info under Basic Service:
  • Likelihood: Medium
  • Severity: Medium
  • Risk Level: Moderate
• Public/media backlash from perceived near-miss:
  • Likelihood: High
  • Severity: High
  • Risk Level: High (especially for commercial operators)

Key Mitigations for Drone Operators:

• Use dual EC systems (ADS-B OUT and ground-based detect-and-avoid).
• Maintain a telemetry and flight log archive for every operation.
• Pre-notify military ATC when operating near MOD airspace.
• File CANPs, NOTAMs, or Temporary Danger Areas when applicable.
• Train pilots to request an upgrade to Traffic Service where required.

Legal and Regulatory Observations

• SERA.3205 and ANO Article 239 set the standard for proximity liability. Keep compliance well-documented.
• Expect growing pressure for mandatory electronic conspicuity, with incidents like this cited in policy.
• If blamed in media or police statements without evidence, drone operators may have grounds for defamation or economic loss claims. Get legal advice promptly.

Final Thoughts

This wasn’t a drone incident — but it could have been perceived as one.

The lesson? Control the narrative by controlling the data.
Record everything. Secure it. Share it when necessary. With the right evidence, drone operators can protect themselves from false blame and help improve UK airspace safety.

About the Author

Richard Ryan is a UK barrister and aviation lawyer specialising in drone regulation, UAS integration, and counter-drone law. A Fellow of the Chartered Institute of Arbitrators, he advises police forces, government bodies, and commercial operators on airspace compliance and emerging UTM frameworks. He is also completing a PhD on airspace integration and unmanned traffic management at Cranfield University.

The post Airprox 2024294 – What Actually Happened at RAF Lakenheath? appeared first on Blakistons.

Transforming UK Airspace: A New Era for Drones and Aviation with NATS OpenAir

By Richard Ryan, Drone Lawyer

The skies over the UK are on the verge of a transformative shift, thanks to the ambitious NATS OpenAir initiative. Designed to integrate drones and advanced air mobility (eVTOLs) into shared airspace alongside traditional aircraft, the proposal promises innovation, efficiency, and safety. But as with any grand vision, the devil is in the detail.
Here’s an in-depth look at what the OpenAir initiative is getting right, where there are gaps, and how it can evolve to meet the needs of all airspace users.
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1. Prioritising Data Privacy and Ownership

One of the most valuable resources in aviation is data. For drone operators, who depend on real-time information about flight paths, weather, and airspace restrictions, access to reliable data is critical. However, the OpenAir proposal is light on specifics about who owns the data and how privacy will be protected.
Without clear protections, drone operators might worry about their data being exploited—whether commercially or in ways that jeopardise their competitive edge.

The Fix:
OpenAir must adopt a clear data privacy framework. Operators should retain ownership of their data, with mandatory anonymisation for any information shared beyond essential safety and operational use. Only the bare minimum of data required for regulatory compliance should be shared, and stringent safeguards must prevent its misuse.
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2. Keeping the Playing Field Fair

OpenAir is envisioned as a centralised hub for managing UK airspace, which sounds great—until you consider the potential impact on smaller players. Consolidating services under one entity like OpenAir might inadvertently stifle competition among Uncrewed Traffic Management Service Providers (UTMSPs).

The Fix:
To level the playing field, OpenAir should adopt open standards that allow seamless third-party integration. Smaller UTMSPs must be supported, not sidelined. Clear rules around equitable access to data and services will ensure innovation thrives without creating monopolies.
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3. Setting Realistic Timelines

Integrating drones and eVTOLs into shared airspace isn’t a simple task. OpenAir’s proposed rollout timeline—beginning pilots in 2025 and achieving full deployment by 2028—might be overly ambitious, especially given the complexity of regulatory approvals and the need for robust infrastructure.

The Fix:
A phased approach with realistic benchmarks is the way forward. OpenAir should focus on pilot projects in key areas where demand is highest (e.g., urban delivery drones or emergency medical services). This would provide valuable data to refine the system while reducing the risk of rushed implementation.
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4. Managing Costs for Drone Operators

OpenAir’s “user pays” principle makes sense in theory—those who use the airspace services should cover the costs. But smaller operators, such as local delivery drone companies, could be disproportionately affected by high fees, potentially pricing them out of the market.

The Fix:
Introduce tiered pricing. Small operators should pay less, at least during the initial phases. Alternatively, subsidies or credits could be offered to early adopters, ensuring fair access while fostering adoption across the board.
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5. Addressing Legal Grey Areas

OpenAir aligns with the UK’s Airspace Modernisation Strategy, but its relationship with existing regulations like CAP 722 (which governs drone operations) needs to be crystal clear. Ambiguities in compliance requirements could delay approvals or lead to legal disputes.
Similarly, liability concerns loom large. If there’s a system outage or data error, who’s responsible for the fallout? Drone operators? OpenAir? The CAA? NATS? DfT?

The Fix:
OpenAir must explicitly state how its services integrate with CAP 722, especially for critical areas like Beyond Visual Line of Sight (BVLOS) operations. As for liability, service agreements must clearly define responsibilities, ensuring all parties—operators, OpenAir, and regulators—understand their obligations.
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6. Building Trust Through Transparency

For OpenAir to succeed, trust is key. Stakeholders—including drone operators, regulators, and public service agencies—must feel confident in the system’s fairness and security.

The Fix:
Establish an independent advisory board with representatives from all key groups, including Blakiston’s Chambers! This board would oversee the rollout of OpenAir, ensuring transparency and accountability. Regular public updates and feedback sessions would further build trust and address concerns early.
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7. Looking to the Future

The potential of OpenAir is undeniable. By creating a unified platform for managing UK airspace, it could unlock opportunities ranging from efficient logistics to life-saving medical deliveries. But to truly succeed, OpenAir must:
1. Prioritise data privacy and ownership.
2. Ensure fair competition for all service providers.
3. Adopt a phased, realistic rollout plan.
4. Keep costs manageable for smaller operators.
5. Align with existing regulations like CAP 722.
6. Address liability concerns upfront.
7. Foster trust through transparency and stakeholder engagement.

The skies above us are changing, and with thoughtful planning, OpenAir could make the UK a global leader in integrated airspace management. But to get there, it must balance ambition with practicality, ensuring the system works for everyone—from global eVTOL operators to local delivery drones.
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What do you think about the OpenAir proposal? Share your thoughts, especially if you’re a drone operator or part of the aviation industry. Your feedback could shape the future of our skies!

About the Author
Richard Ryan is a UK-based barrister and drone law expert with over 20 years of legal experience. Specializing in regulatory, operational, and safety challenges, Richard advises defence companies, regulatory bodies, and government agencies on the complexities of UAS operations. A former advisor to the UK Civil Aviation Authority and the House of Lords’ AUTMA committee, Richard is currently pursuing a PhD at Cranfield University, focusing on the legal implications of drone integration into global airspace.
Richard combines his legal expertise with a deep understanding of defence operations, having served in the British Army, including deployments to Iraq and Afghanistan. His insights bridge the gap between operational realities and legal requirements, ensuring clients navigate the rapidly evolving world of drone technology with confidence.

The post Transforming UK Airspace: A New Era for Drones and Aviation with NATS OpenAir appeared first on Blakistons.