Personal Protective Equipment (PPE) and Biohazards in Aviation

November 21, 2025

News & Press

Sofema Online (SOL) addresses the use of proactive safety measures (PPE) and the specific biological threats (Biohazards) that personnel face, particularly during aircraft maintenance and cabin service.

Issues and Challenges

A major issue is PPE Suitability and Hazard Misalignment. Workers often use generic protection, such as standard cotton gloves, when the task requires specialised gear, like nitrile gloves for handling highly corrosive hydraulic fluid or a P100 respirator for fine composite dust.

Compliance and Culture pose a significant challenge. Aviation operations are often time-pressured, leading to complacency. Personnel may improperly wear or skip PPE – for instance, wearing safety glasses on the forehead or omitting hearing protection – to save time, creating critical gaps in their defence.

Biohazard Risk

Regarding Biohazard Risk, the main challenge is Hidden Contamination. Biohazards, such as blood, vomit, or other bodily fluids found in cabins, restrooms, or waste systems, are not always visible.
There’s also the risk of microbial hazards like mold or bacterial growth in poorly ventilated or wet areas of the aircraft.

Improper removal (“Doffing”) of contaminated PPE (especially gloves) can lead to the first aider accidentally touching the contaminated exterior and causing self-contamination.

Best Practices

The first step is Risk-Based PPE Selection.

A formal Hazard Assessment must be conducted for every task (e.g., composite repair, lavatory cleaning) to specify the exact PPE required, including hearing protection (when noise exceeds 85dB), specialised gloves, and respiratory gear.
Personnel should always practice Universal Precautions, treating all blood and bodily fluids as potentially infectious.
This mandates the use of gloves and eye protection during any cleanup or first aid response. Biohazard Cleanup Kits should be easily accessible and fully stocked.

Crucially, Training in “Donning and Doffing” is essential.

Establish clear protocols for the safe removal of PPE, such as the “cuff-to-glove” technique for gloves, to prevent self-contamination.
Finally, require regular fit checks and inspection of all equipment, especially respirators and safety harnesses, and immediately remove damaged or ill-fitting items from service.

Stop – Think – Act Model: The First Aider’s Discipline

The Stop–Think–Act model is a critical mental framework designed to prevent a natural, rushed response from overriding necessary safety checks in high-stress first aid situations.

The Steps

STOP: The first aider must immediately halt their approach to the scene. The core goal is to isolate the Danger and prevent becoming a second casualty. In an aviation setting, this means visually and auditorily checking for running jet engines (jet blast/suction), moving GSE (tugs, fuelers), unsecured height risks, or exposed electrical hazards.
THINK: Next, rapidly assess the hazards identified and the number/condition of casualties.

>> Form a mental plan for the safest and most effective action. Prioritisation is key: Is the hazard immediate and life-threatening?

Can I safely isolate it?
Which casualty is most critical (Triage)?

>> The goal is to formulate a Safe, Measured Response.

ACT: Only once the scene is deemed safe (or the safest possible course is determined) should the first aider execute the Safe Plan.
This begins with securing the casualty and immediately proceeding with the primary survey (e.g., C-A-B). The final step is to Intervene Safely and effectively.

Issues and Challenges

The single biggest challenge is Emotional Override. In an emergency, the human instinct is to rush in and help, thereby bypassing the crucial Stop and Think phases.

This leads first aiders to inadvertently expose themselves to danger.
Another issue is Incomplete Assessment during the “Think” phase, such as failing to identify the corrosive nature of a fluid leak, which results in a dangerous or inappropriate intervention (Act).

Best Practices

The model must be reinforced through Drill and Repetition until it becomes a conditioned response, especially in scenarios involving hidden or dynamic dangers.

First aiders should be encouraged to use Verbalisation, stating their steps out loud

STOP: Check for moving aircraft.
THINK: Vehicle is approaching, must get the attention of the driver before approaching the casualty.
ACT: Signal driver, then approach casualty.”) to externalise the thought process and ensure safety checks aren’t missed.

Interactive: Hazard-Spotting in a “Virtual Hangar”

Hazard-spotting is a powerful training technique that uses realistic environments to sharpen a person’s ability to proactively identify risks. A “virtual hangar” provides a modern, immersive, and effective training ground.

Issues and Challenges

The primary challenge is Cognitive Blindness.

Maintenance personnel often become desensitized to common hazards (e.g., extension cords, unsecured tools) because they are familiar.
They stop seeing the risk.
Traditional 2D photos also present a challenge due to a Lack of Depth/Immersion, making it hard to simulate the need to look up or around corners to find hazards.
It is also challenging to ensure the identification skills learned in the virtual environment transfer effectively to the pressure of the real hangar floor.