100% of accidents have Human Factor: mindFly

The contributory role of Human Factors

Introduction

Humans, by their very nature, make mistakes. Aviation is a high-reliability industry, yet accidents and serious incidents still occur. For decades, the safety literature has frequently stated that human error is implicated in roughly 70% to 80% of aviation accidents (O’Hare, Wiggins, Batt, & Morrison, 1994; Wiegmann & Shappell, 1999; Yacavone, 1993).

This line is popular for a reason: it feels intuitive. We see a crew action, a missed call, a wrong mode selection, a late go-around, a maintenance slip, a supervision gap—and we conclude: “human error.”

But there is a subtle danger in the way this statistic is used.

When we say “70–80%,” what do we really mean? Do we mean “the pilot caused it”? Do we mean “if humans were better trained, the accident would not happen”? Do we mean “remove human error and the system becomes safe”?

That is where the conversation needs to mature.

My view: the premise is incomplete

I beg to differ with the basic premise—not with the fact that humans are involved, but with the way the phrase is used.

In aviation, humans are present everywhere in the chain:

• Someone designed the aircraft, the cockpit, the automation philosophy
• Someone wrote the SOPs, checklists, manuals, limitations
• Someone built the training system and assessed competency
• Someone created the roster, the duty patterns, the fatigue risk controls
• Someone maintained the aircraft, signed the release, updated the records
• Someone supervised the operation, measured performance, set incentives
• Someone regulated, audited, approved, and allowed the system to run

And yes—someone also flew the aircraft.

So if the phrase “human factors in 70–80% of accidents” is meant to say “humans appear in the chain,” then the number is not 70–80%. In that sense, it is effectively 100%—because aviation is a human enterprise.

But here is the crucial point:

Human involvement is not the same as human blame.

If you label the outcome as “human error,” you may feel you have explained it—but often you have only stopped thinking at the first convenient answer.

The real truth: error is normal, not exceptional

Eliminating human error is not feasible. And trying to do so is a trap.

People do not come to work intending to do a bad job. In most cases, they are trying to do the right thing, with the information they have, under constraints they did not choose:

• time pressure
• high workload
• fatigue and circadian low
• ambiguous cues
• imperfect procedures
• automation surprises
• organisational expectations
• social pressure and authority gradients

Error is not a defect in character. It is often the natural by-product of normal human cognition operating in a complex system.

That is why Human Factors is not about perfect humans.
Human Factors is about systems that remain safe even when humans are imperfect.

Or put simply:

We cannot design aviation around the fantasy of flawless performance.
We must design aviation around the reality of human performance.

So what is Human Factors?

Human Factors is the study of how humans interact with the tools, tasks, environment, and organisation—so that we can design operations that are:

• safer
• more efficient
• more resilient
• more tolerant of variability

In practical terms, Human Factors asks questions like:

• Why do competent crews fixate and miss the obvious?
• Why do teams fail to challenge even when something feels “off”?
• Why does workload suddenly spike at the worst moment?
• Why does automation help 99 times and confuse on the 100th?
• Why do organisations drift into unsafe norms without noticing?

HF is not a motivational poster. It is a discipline.

Training: CRM is important, but not enough

Crew Resource Management (CRM) is a training intervention that supports Threat and Error Management (TEM)—a structured way to anticipate threats, trap errors early, and manage undesired aircraft states.

But here is what I keep seeing across the industry:

The whole focus slowly shifts to “error reduction”—as if fewer errors automatically mean safety. Then CRM risks becoming:

• a compliance item
• a yearly checkbox
• a “soft skills” lecture
• a list of generic behaviours detached from real operational pressure

Human Factors is a scientific discipline that requires years of training; many HF professionals hold relevant graduate degrees. The idea that HF is a small, simple set of principles is a myth. And as a result, the belief that CRM can be “learned” in a short classroom module is also a myth.

CRM can help. TEM can help. But only if we treat them with the seriousness they deserve—grounded in evidence, operational reality, and honest debrief culture.

Why “human factor” thinking often goes wrong

When accidents are explained as “pilot error,” organisations often respond with more of the same:

• more training
• more checking
• more policing
• more memos
• more “be careful” instructions

Sometimes training is needed. But very often, training is used as a convenient substitute for fixing deeper issues like:

• unclear or conflicting SOPs
• weak standardisation
• unstable approaches becoming normalised
• inadequate fatigue risk management
• commercial pressure and “on-time” culture
• poor feedback loops and weak reporting trust
• checklist design that does not match real workflow
• automation philosophy mismatched with human attention limits

In short: we “fix the people” because fixing the system is harder.

But safety does not improve sustainably when we keep treating symptoms.

Holistic view: HF from cockpit to culture

Human Factors work is not limited to the individual. It extends from the person to the organisation.

1) Individual level

• attention and perception
• workload management
• decision-making under uncertainty
• startle and surprise
• stress and fear
• fatigue and sleep debt
• cognitive lock-up (fixation, tunnel vision, failure to switch tasks)

2) Team level

• communication quality (not quantity)
• shared mental model
• cross-monitoring
• challenge-and-response culture
• authority gradient management
• leadership and followership

3) Organisational level

• rostering and fatigue controls
• training design and instructor standardisation
• SOP quality and usability
• stable approach policy enforcement (real, not symbolic)
• safety reporting trust and Just Culture
• drift into “normalised deviance”
• incentives that quietly reward risk

This is where Human Factors becomes powerful: it can reveal how the system shapes behaviour—and why the same kinds of errors repeat in different crews, fleets, and countries.

A mindFly lens: resilience over blame

At mindFly, the question is not “Who messed up?”
The question is: “What allowed this to happen, and why didn’t we catch it earlier?”

A resilient system expects human error and builds layers that make error:

• less likely
• less harmful
• easier to detect
• easier to recover from

That means designing for:

• trap opportunities
• clear triggers for go-around or stop
• unambiguous callouts
• predictable automation behaviour
• realistic SOPs that match human workflow
• fatigue-aware scheduling
• psychologically safe challenge culture

When those layers are missing, we will keep calling accidents “human error”—even though the system quietly manufactured the conditions.

A short Indian perspective: duty, attention, and the micro-reset

Indian wisdom does not romanticise perfection. It focuses on practice (abhyāsa), steadiness, and disciplined attention.

In the Bhagavad Gita, karma-yoga is doing one’s duty with full focus, without being hijacked by fear of results. In cockpit terms: do the next right action cleanly, without panic, without ego, without rushing.

One practical tool is a micro-reset:
two conscious breaths at key moments (top of descent, before approach briefing, before taking over, before a critical configuration change). Not “wellness”—just state control to prevent the mind from collapsing into tunnel vision.

This matters because when the mind gets rushed, it doesn’t just speed up—it narrows. That narrowing is where fixation, missed cues, and poor decisions live.

Summary

Human factors training needs in-depth study. Similar to learning the skill of flying, the same applies to the principles of Human Factors.

And so, when we hear “70–80% of accidents involve human error,” we should respond with maturity:

• Humans are involved in almost every chain—so the real work is not counting humans.
• The real work is building systems that expect human limits and remain safe anyway.
• CRM/TEM are valuable—but only when rooted in science, realism, and culture.
• Safety improves when we move from blame to understanding, from compliance to competence, and from error reduction to resilience.

If you’d like a deeper exploration of these themes—especially cognitive lock-up, fatigue, and the traps of “pilot error” thinking—you may like Capt. Amit Singh’s book “mindFly: Follies, Realities and Human Factors.”