Sometimes procedural errors, due to lack of currency, increased workload (due to adverse weather, equipment malfunction or enemy action) or poor judgement (due to situational uncertainty or potential imminent catastrophe), leads to ‘pilot error’ [1]. The pilot errs, conventionally, whenever the perceptual, judgemental and motor demands exceed (her)his momentary attention capacity. “Typically it occurs when …
Before we understand the basics about Hypoxia, please answer to the best of your knowledge and understanding the following questions pertaining to Hypoxia in aviation.
Undoubtedly cabin pressurisation and oxygen systems have allowed unhindered aviation activities, with a caveat though – never to cross the altitude beyond the capabilities of the system on board. Thus, commercial aircraft fly maintaining a cabin pressure of 6000-8000 ft, and unpressurised small aircraft mostly operate below 10000 ft. Combat aircraft may have a higher …
The most important effects of hypoxia is on Central Nervous System (CNS) and vision. This insult to CNS which affects the performance in flight varies as per the altitude and the resulting stages of hypoxia. The effects are discussed as per the stages of hypoxia.
Technological improvements in reliability and performance of cabin pressurisation and Oxygen delivery systems has greatly reduced the incidents and accidents due to hypoxia. Yet, incidence of hypoxia in flight still occurs due to lack of vigilance, mechanical failure of equipment, improper indoctrination or improper use of oxygen equipment.