Sofema Online (SOL) Considers Aircraft Ramp & Hangar Health & Safety Exposure.

 

The Ramp Environment (apron) is highly dynamic and noisy, making hazard perception difficult. The sheer mass and momentum of aircraft and ground support equipment (GSE) like baggage tractors, belt loaders, and fuel trucks are the primary danger. Unlike cars, the braking and manoeuvring capabilities of this heavy equipment are significantly reduced, and visibility from the cockpit/cabin is often restricted, creating large blind spots.

Specific Injury Mechanisms

• Crush Injury: Occurs when a body part is squeezed between two heavy objects (e.g., an aircraft tug and a jet engine casing). This injury is insidious; the immediate damage is obvious, but the associated risk is a release of toxins (like myoglobin and potassium) from the damaged muscle into the bloodstream, leading to kidney failure and cardiac arrest.

• Collision/Blunt Trauma: Being struck by a moving vehicle causes multi-system trauma, including closed fractures (e.g., pelvis, femur), internal bleeding, and potential Tension Pneumothorax (a life-threatening chest injury).

• Entrapment: Being pinned or stuck, often leading to restricted breathing or circulation.

Expanded First Aid Rationale

The core challenge is Dynamic Danger Isolation. The first aider must first ensure no more vehicles can approach or move before even touching the casualty.

• Danger Step: STOP (Shut off engine, apply parking brake, chock wheels if necessary) the source of movement. Call for immediate assistance from trained ground crews to secure the area.

• Severe Bleeding: Crush injuries frequently involve massive tissue damage and tearing, necessitating rapid, direct pressure control and, if ineffective, the application of a tourniquet.

• Spinal Caution: Any mechanism involving high force (being struck, crushed) demands the absolute minimum movement of the casualty and full spinal immobilisation precautions until advanced medical help arrives.

Electrical Risks

Aviation utilises unique electrical standards. The 400 Hertz system is the standard for most large aircraft power. While the voltage is lower (115V) the frequency makes the current potentially more dangerous as it can affect nerve and muscle tissue differently than the standard.

The battery system can deliver extremely high current (amperage) and pose a significant arc-flash and heat risk.

Specific Injury Mechanisms

• Electrocution/Cardiac Arrest: Electrical current passing through the body, especially the chest, can disrupt the heart's natural rhythm (Ventricular Fibrillation).

• Deep Electrical Burns: Current tends to travel through the body's path of least resistance (nerves, blood vessels) and generate heat internally. The seemingly small entry and exit wounds on the skin often mask massive damage to underlying tissues (muscle, bone).

• Muscle Spasm/Falls: The electric shock can cause violent, uncontrollable muscle contraction, potentially throwing the worker from a height or causing severe orthopedic injury.

Expanded First Aid Rationale

• Isolation is King: The absolute first rule is Do Not Touch. The first aider must use a non-conductive object (wood, rubber) to attempt to remove the source or, ideally, locate the remote power switch.

• Post-Isolation: Assess the casualty's breathing and circulation. Even if the casualty appears stable, immediate transport to definitive care is required due to the risk of delayed (heart rhythm problems) that can develop hours later. cardiac dysrhythmia

• Burn Care: Treat the skin burns with immediate cooling, but understand that the internal damage is the priority.

Thermal Risks

Aviation operations involve massive energy transfer. Key sources of intense heat include:

• Brakes: Landing heavy or after a high-speed rejected takeoff can superheat the carbon-metallic brake components, reaching temperatures well over .

• Auxiliary Power Unit (APU) Exhaust: The small jet engine in the tail (or sometimes fuselage) used to generate power on the ground expels high-velocity, extremely hot gases.

• Engine Exhaust (Jet Blast): The main engine exhaust (when running) is dangerously hot and high-speed.

Specific Injury Mechanisms

• Contact Burns: Direct contact with hot surfaces like brakes or engine cowlings leads to deep Full Thickness (3rd degree) burns.

• Scalding/Fumes: Exposure to hot liquids (e.g., spilled hydraulic fluid) or hot exhaust gases causes severe burns, often across a large body surface area.

• Secondary Injury: A burn casualty may collapse or fall from the shock and pain, resulting in secondary head/spinal injuries.

Expanded First Aid Rationale

• Stop the Burning Process: This requires immediate and prolonged cooling (Module 7). The heat stored in the tissue must be drawn out. Water must be cool, running, and applied for a full 20 minutes, even if the pain subsides earlier. Do not use ice, as this can cause frostbite and further tissue damage.

• Jewellery Removal: Rings, watches, and tight clothing near the injury must be removed immediately before swelling begins, which can take only a few minutes, turning the item into a tourniquet.

• Infection Control: After cooling, the burn must be covered with a sterile, non-adherent dressing (ideally a specialised burn dressing) to prevent infection.

Physical and Structural Risks

The aircraft structure itself presents risks. Many components have sharp, unfinished edges (e.g., removed access panels, split cowlings, broken composites). Work at height is endemic, from wing surfaces to maintenance platforms and fuselage sections. The environment is also often congested with tools and equipment, increasing the risk of slips and trips.

Specific Injury Mechanisms

• Lacerations/Amputation: Sharp edges cause deep cuts that can sever arteries, veins, or tendons, leading to rapid, life-threatening blood loss.

• Falls from Height: Falls are a high-energy mechanism. Even a relatively short fall (e.g., 6 feet from a wing) can transmit enough force to cause a Basilar Skull Fracture (head injury), a spinal cord injury (C-spine, T-spine), or severe long bone fractures.

• Head Injury Red Flags: Any fall involving the head must be treated with extreme caution, watching for signs like unconsciousness, confusion, unequal pupils, or vomiting.

Expanded First Aid Rationale

• Bleeding Control: For severe bleeding from a laceration, the steps are strict: Direct Pressure -> Pressure Dressing -> Tourniquet / Haemostatic Agent. Speed is vital.

• Spinal Immobilisation: For any fall from height, assume a spinal injury until proven otherwise. The first aider must manually stabilise the head and neck in a neutral, in-line position and ensure the casualty is moved only by trained professionals using specialised equipment (e.g., a spinal board).

• Fracture Management: Immobilise suspected fractures in the position found, using padding and slings/splints to minimise movement, pain, and further soft tissue damage.

Chemical and Material Risks

Aviation relies on a range of hazardous materials. Jet A-1 fuel is a kerosene-based substance that poses inhalation and aspiration risks.

• Hydraulic fluids (like Skydrol, which is phosphate ester-based) are highly irritating to the eyes and skin. De-icing fluids (glycol-based) can be toxic if ingested.

 

• Battery Acids (Sulfuric Acid for Lead-Acid) and Alkalis (Potassium Hydroxide for Nickel-Cadmium) are highly corrosive.

 

• Newer aircraft utilise composite materials (Carbon Fibre Reinforced Polymer), and the dust generated during drilling or sanding can be a respiratory and skin irritant.

Specific Injury Mechanisms

• Chemical Burns: Acids and alkalis destroy tissue rapidly. Alkalis (e.g., battery alkalis) are often worse because they cause a liquefaction necrosis that allows them to penetrate deeper into tissue.

• Inhalation/Ingestion: Exposure to fuel or volatile vapors can cause systemic toxicity and aspiration pneumonia.

• Eye Injury: Chemical splash can cause rapid, permanent damage to the cornea and conjunctiva.

Expanded First Aid Rationale

• Immediate Irrigation: For chemical skin or eye contact, the single most critical action is copious, prolonged flushing with running water for a minimum of 20 minutes (Module 7). The goal is to dilute and wash away the chemical entirely. DO NOT try to neutralise the chemical (e.g., don't use baking soda on acid) as the reaction generates heat and worsens the burn.

• Safety Data Sheet (SDS) Reference: The first aider's response must be guided by the substance's SDS (formerly MSDS), which specifies the exact first aid procedure, especially for specialised fluids like Skydrol.

• First Aider Boundary: A key constraint is the boundary between first aid and Hazmat response. The first aider addresses the casualty's immediate personal contamination but does not attempt to contain or clean up the spill itself; this is the role of specialised Hazmat teams.

Next Steps

Sofema Aviation Services provides the following course available as classroom or webinar. Please see the website or email team@sassofia.com.