HEARING & THE AVIATION MEDICAL
When are hearing tests required by CASA?
- On initial license issue
- Then at ages 25, 30, 35, 40, 45, 50, 55, 60, 65, 70, 75, 80
Bear in mind that you will still need an audio at 25 if you had your first Class 1 or 3 medical at age 24.
What are the hearing standards?
The hearing check at the medical is just a screening test that most people easily pass. The CASA standards to pass the screening test are:
- 35 decibel (dB) loss at 500Hz, 1000 Hz, or 2000Hz
- or a 50 dB loss at 3000Hz
35dB is around the sound level of a very quiet conversation. The hearing check itself is a simple tone – you can or can’t hear it.
The vast majority of people pass the initial screening test. In the unlikely event you do not pass the audio then you may require a a speech test. The final test is that of a hearing in the work place (ATC or cockpit).
How is the hearing checked?
Your hearing is checked with an Audiometer which we have available at the clinic.
The device emits sounds at a specific pitch and volume, and you simply press the button when you hear the sound.
The test takes around 15 minutes.
TYPES OF HEARING PROBLEM
Conductive Hearing Can be thought of as a physical obstruction to the sound waves somewgere between the outer and inner ear.
Sensorineural Hearing Loss is describes impaired hearing caused by neurological impairment of the delicate inner ear.
Individual hair cells of the cochlear pick up sound waves that are transmitted to neural impulses and then on to the central nervous system.
There are a variety of causes of this type of hearing loss.