Threats To Aviation

Question 1

Decompression Sickness.

Answer 1

Caused by gas liberation in the form of bubbles from tissues to blood which is produced by exposure to low pressure as when humans reach altitude in flight according to Henry’s law.

Question 2

Bends.

Answer 2

Stinging pain, mainly in joints.
Common after decompression in airliners.

Question 3

Creeps.

Answer 3

Tingling, prickling and itching of the skin.
More common in scuba diving.

Question 4

Chokes.

Answer 4

Feeling of narrowness in the chest. Following be burning deep chest pain.
Gas bubbles are trapped inside the alveolar capillaries of the lungs.

Question 5

Staggers.

Answer 5

Double vision, impaired vision, impaired tactile sensibility, impaired consciousness.
Not yet occurred in commercial aviation.

Question 6

Diving and Flying - Decompression sickness.

Answer 6

30ft deep. - don’t fly for 12 hours
More than 30ft deep - don’t fly for 24 hours

Question 7

Acceleration.

Answer 7

Short term - less than 1 second
Long term - more than 1 second

Question 8

Acceleration - G stages.

Answer 8

> 1g - blood accumulates in the lower body
2-5g - apparent increase in body weight
8-9g - loss of sensory functions

Question 9

Carbon Monoxide.

Answer 9

Binds 200/250 times faster to haemoglobin.

Question 10

Barotrauma.

Answer 10

Rapid or extreme changes in pressure , affecting enclosed body cavities.

Question 11

Gastrointestinal Barotrauama.

Answer 11

Entrapped gases will expand.

Question 12

Aerodontalgia Barotrauma.

Answer 12

Gas expansion in altitude presses the dental nerve.

Question 13

Humidity.

Question 14

Toxic Materials.

Question 15

High-Altitude Enviroment.

Question 16

Radiation.

Question 17

Stochastic Effect.

Question 18

Non-Stochastic Effect.