Common Causes of Military Hearing Loss

How Does Weapons Fire Cause Hearing Loss?

Small arms fire is one of the most common causes of military hearing damage. A single rifle shot can produce noise levels of 150–170 decibels — far above the 85 dB threshold at which hearing damage can occur. Repeated exposure during training and operations without adequate hearing protection causes cumulative damage to the delicate structures of the inner ear.

What Damage Does Artillery and Mortar Fire Cause?

Artillery produces some of the highest noise levels in the military environment, with howitzers and mortars generating impulse noise above 180 decibels at the firing position. Even with hearing protection, the intensity of artillery fire can cause immediate acoustic trauma or progressive hearing damage over multiple exposures.

How Does Aircraft and Helicopter Noise Affect Hearing?

Jet engines, propeller aircraft, and helicopters produce sustained noise levels of 120–140 decibels. Ground crew, flight line personnel, and aircrew are particularly at risk. The continuous nature of aircraft noise, combined with the difficulty of wearing hearing protection during communication-critical tasks, increases the risk of noise-induced hearing loss.

What About Armoured Vehicles and Machinery?

Tank and armoured vehicle interiors expose crew to continuous noise from engines, tracks, and weapon systems. Engineering workshops, generators, and heavy plant equipment also produce harmful noise levels. Personnel working in these environments for extended periods face significant cumulative noise exposure.

How Do Explosions and IEDs Cause Hearing Damage?

Blast waves from explosions, improvised explosive devices (IEDs), grenades, and demolitions can cause immediate and severe acoustic trauma. The sudden, intense pressure wave can rupture the eardrum and damage the inner ear structures, resulting in permanent hearing loss and tinnitus.

Why Are Confined Spaces Particularly Dangerous?

Ship engine rooms, submarine compartments, and enclosed vehicles amplify noise levels. The reverberation in confined spaces means that noise exposure is often more intense than in open environments. Royal Navy and submarine personnel are particularly affected by sustained exposure in these settings.

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