Managing Helicopter Downwash Risks Near Hospitals

Understanding the Risks of Helicopter Downwash

Helicopter Emergency Medical Services (HEMS) play a critical role in transporting patients to hospitals quickly. However, helicopter downwash—a strong flow of air generated by the rotors—can create significant safety hazards, particularly in areas surrounding hospital landing sites. A tragic accident in the UK highlighted these risks when a Sikorsky S92A helicopter’s landing downwash caused severe injuries to bystanders in a nearby car park, one of whom later passed away.

Key Safety Challenges at Hospital Heliports

Many hospital heliports, particularly older ones, were designed without a comprehensive risk assessment for the impact of helicopter downwash on nearby public areas. Additionally, many hospital staff managing these sites lack formal training in heliport operations, which can lead to miscommunication between hospital personnel and helicopter operators. Despite the availability of updated safety standards, such as the UK CAA’s CAP 1264, existing sites are often not required to comply retroactively, leaving potential hazards unaddressed.

Investigations into past incidents have shown recurring issues, including:

• Lack of formal risk assessments for areas adjacent to landing sites

• Ineffective communication between hospital staff and helicopter operators

• Insufficient measures to manage pedestrian and vehicle movement during landings

• Absence of standardised procedures for securing high-risk areas

Best Practices for Heliport Safety Management

To ensure the safe operation of heliports, hospitals and heliport operators should implement comprehensive risk assessments and robust operational procedures. Key mitigation measures include:

• Establishing clear safety perimeters around landing sites

• Implementing controlled pedestrian and vehicle access during landings

• Training hospital staff in heliport operations and risk management

• Installing warning signs, audible alerts, and designated viewing areas for bystanders

How airsight Supports Heliport Safety

As a globally recognised expert in aviation safety, airsight offers tailored solutions to mitigate risks at hospital heliports. Our specialists conduct detailed hazard and risk assessments, ensuring compliance with national and international safety standards. Through systematic aeronautical studies, we help operators identify risks, develop practical mitigation strategies, and optimise heliport operations.

Our services include:

• Heliport safety assessments and risk evaluations

• Compliance checks with ICAO, EASA, UK CAP, and national regulations

• Operational planning and procedural optimisation for heliports

• Training programmes for hospital and heliport personnel

Ensuring Safe and Compliant Heliport Operations

The risks associated with helicopter downwash require proactive management and expert-driven solutions. Whether it’s assessing existing sites or planning new heliports, airsight provides comprehensive support to enhance operational safety and regulatory compliance. Contact airsight today to learn how our expertise can help improve the safety and efficiency of your heliport operations.

_{Cited in: S92, Plymouth UK, 2022 | SKYbrary Aviation Safety}