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Stress

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Article Information
Category: Human Behaviour Human Behaviour
Content source: SKYbrary About SKYbrary
Content control: SKYbrary About SKYbrary

Description

Stress is a bodily response to a stimulus that disturbs or interferes with the “normal” physiological equilibrium of a person and, in the context of aviation, refers to a state of physical, mental or emotional strain due to some external or internal stimulus.

Understanding the factors that lead to stress, as well as how to cope with stressful situations, can greatly improve a individual's performance. Also, understanding that colleagues may react differently to the same stressor is important and can help you control a situation that can quickly get out of hand if an individual is having a negative reaction.

Accidents & Incidents

Events on the SKYbrary database which list stress as a significant contributory factor:

  • BE20, Nadi Fiji, 2010 (On 25 April 2010, a Beech King Air touched down at Nadi with its landing gear in the transit position after flying a night approach during which a significant electrical system failure had occurred. The landing gear retracted and the aircraft left the runway to the side and came to a stop resting on its fuselage. The Investigation attributed the electrical failure, which directly affected the landing gear operating system and required two diodes to have both failed was likely to have meant that one would have failed on an earlier occasion with no apparent consequence.)
  • B735, vicinity Kazan Russia, 2013 (On 17 November 2013, the crew of a Boeing 737-500 failed to establish on the ILS at Kazan after not following the promulgated intermediate approach track due to late awareness of LNAV map shift. A go around was eventually initiated from the unstabilised approach but the crew appeared not to recognise that the autopilot used to fly the approach would automatically disconnect. Non-control followed by inappropriate control led to a high speed descent into terrain less than a minute after go around commencement. The Investigation found that the pilots had not received appropriate training for all-engine go arounds or upset recovery.)
  • A332, Perth WA Australia, 2014 (On 26 November 2014, an Airbus A330-200 was struck by lightning just after arriving at its allocated stand following a one hour post-landing delay after suspension of ramp operations due to an overhead thunderstorm. Adjacent ground services operatives were subject to electrical discharge from the strike and one who was connected to the aircraft flight deck intercom was rendered unconscious. The Investigation found that the equipment and procedures for mitigation of risk from lightning strikes were not wholly effective and also that perceived operational pressure had contributed to a resumption of ground operations which hindsight indicated had been premature.)
  • A310, vicinity Moroni Comoros, 2009 (On 29 June 2009, an Airbus A310-300 making a dark-night visual circling approach to Moroni crashed into the sea and was destroyed. The Investigation found that the final impact had occurred with the aircraft stalled and in the absence of appropriate prior recovery actions and that this had been immediately preceded by two separate GWPS 'PULL UP' events. It was concluded that the attempted circling procedure had been highly unstable with the crew's inappropriate actions and inactions probably attributable to their becoming progressively overwhelmed by successive warnings and alerts caused by their poor management of the aircraft's flight path.)
  • B752, vicinity Cali Colombia, 1995 (On 20 December 1995, an American Airlines Boeing 757-200 inbound to Cali, Colombia made a rushed descent towards final approach at destination and the crew lost positional awareness whilst manoeuvring in night VMC. After the crew failed to stow the fully deployed speed brakes when responding to a GPWS ‘PULL UP’ Warning, the aircraft impacted terrain and was destroyed with only four seriously injured survivors from the 163 occupants surviving the impact. The accident was attributed entirely to poor flight management on the part of the operating flight crew, although issues related to the FMS were found to have contributed to this.)

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Related OGHFA Situational Examples

Situational Example Flight Phase
De-icing and Latent Organisational Factors (OGHFA SE) Take Off
Disorientation During Vectored Go-Around (OGHFA SE) Missed Approach
Fuel Leak and Confirmation Bias (OGHFA SE) Climb, Cruise, Descent
Fuel Starvation, Stress, Fatigue and Nonstandard Phraseology (OGHFA SE) Cruise, Descent
Landing Gear Failure (OGHFA SE) Landing
Takeoff Weight Entry Error and Fatigue (OGHFA SE) Take Off
Unidentified Fire On Board (OGHFA SE) Cruise, Descent, Landing

Related OGHFA Material

Further Reading

EUROCONTROL

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