Uçuş Emniyetini Tehdit Eden İrkilme Refleksi ve Operasyonel Yansımaları

Öz

Uçuşlar sırasında gürültü, yıldırım çarpması, ani motor arızası gibi beklenmedik uyaranların aniden belirmesi karşısında açığa çıkan istemsiz bir tepki olarak irkilme refleksi (startle effect) üzerinde az durulmuş olmasına rağmen havacılık operasyonlarının en kritik unsurlarından biridir. Zira, bu refleks nefes kesilmesi, kas kasılması, çarpıntı, motor becerilerde kesinti, kontrol kaybı gibi fizyolojik, karar almada gecikme, düşünsel boşluk, durumsal farkındalık kaybı, kognitif tünelleme gibi bilişsel etkiler gösterebilmektedir. Tüm bunlar uçuş esnasında bilhassa ani, acil gelişen, hızlı ve doğru karar verilmesi gereken durumlarda kritik karar alma süreçlerini, dolayısıyla da emniyeti etkileyebilmektedir. Bu bağlamda sivil havacılık emniyet yönetimi, insan faktörleri açısından bu faktörün incelenmesi önem arz etmektedir. Ancak literatürde bu konu üzerine eğilen araştırmaların sınırlılık arz ettiği görülmektedir. Bu önemden ve literatür boşluğundan hareket eden bu çalışma spesifik olarak irkilme refleksine odaklanarak, bu olgunun sivil havacılık bağlamında çeşitli yönleriyle incelenmesini amaçlamıştır. Nitel araştırma yöntemine dayalı olarak doküman analizi vasıtasıyla sivil havacılık otoritelerinin yayınladığı resmi raporlar, ulusal ve uluslararası hava yolu şirketlerinin emniyet prosedürleri, eğitim müfredatları ve operasyonel kılavuzları ile ilgili literatürde konuya ilişkin olarak yürütülmüş olan araştırmalar taranmıştır. Veriler, uçuş operasyonları bağlamında değerlendirilmiştir. Uçuş operasyonlarında yalnızca anlık bireysel bir tepki değil, emniyet performansı ve kültürü açısından da kritik bir faktör olduğu tespit edilen irkilme refleksine ilişkin değerlendirmeler ile bu çalışmanın sivil havacılık yönetimi literatürüne özgün bir katkı sunması ve uygulamaya yönelik farkındalık oluşturması beklenmektedir.

Anahtar Kelimeler

• İrkilme refleksi
• Havacılık emniyeti
• Havacılık yönetimi
• İnsan faktörleri
• Kokpit

The Startle Effect as a Threat to Flight Safety and Its Operational Consequences

Öz

Although the startle effect—an involuntary response triggered by the sudden onset of unexpected stimuli such as noise, lightning strikes, or abrupt engine failures during flights—has received limited scholarly attention, it constitutes one of the most critical elements of aviation operations. This reflex may manifest through various physiological effects, including breath-holding, muscle contractions, palpitations, interruptions in motor skills, and loss of control, as well as cognitive effects such as delayed decision-making, cognitive blanking, loss of situational awareness, and cognitive tunneling. All of these factors can influence critical decision-making processes during flight, particularly in sudden and emergency situations that require rapid and accurate responses, thereby affecting overall operational safety. In this context, examining this factor from a human-factors perspective holds significant importance for civil aviation safety management. However, the extant literature on the subject remains limited. Motivated by this importance and the existing research gap, the present study specifically focuses on the startle effect and aims to examine this phenomenon from multiple perspectives within the context of civil aviation. Drawing on qualitative research methods, the study employed document analysis to review official reports published by civil aviation authorities, safety procedures of national and international airlines, training curricula, operational manuals, and relevant scholarly studies conducted on the topic. The data were evaluated within the scope of flight operations. It is anticipated that the assessments regarding the startle effect—identified as a critical factor not only as an instantaneous individual reaction but also in terms of safety performance and safety culture—will contribute uniquely to the civil aviation management literature and raise practical awareness on the subject.

Anahtar Kelimeler

• Startle effect
• Aviation safety
• Aviation management
• Human factors
• Cockpit

Kaynakça

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