Part-66 Module 9 Practice Questions - EASA Part-66 Module 09 - Human Factors Exam - Part-66 Module 9 Practice Questions - EASA Part-66 Module 09

Question 1

In EASA Part-66 Module 9, 'Murphy's Law' is frequently cited to explain why maintenance error controls are necessary. What does Murphy's Law state?

Errors are always caused by the least experienced person on the team If something can be assembled or connected the wrong way, eventually someone will do so The probability of an error doubles with every additional task in a shift Human error can be completely eliminated through adequate training

Correct Answer:

If something can be assembled or connected the wrong way, eventually someone will do so

Question 2

Why does Module 9 place such emphasis on human factors in aircraft maintenance rather than only in flight operations?

Maintenance tasks are always carried out in flight and so directly affect handling A significant proportion of aircraft accidents and incidents have been linked to maintenance error Maintenance staff are the only personnel not covered by flight crew training Human factors only apply to engineering work and not to pilots

Correct Answer:

A significant proportion of aircraft accidents and incidents have been linked to maintenance error

Question 3

A latent failure (or latent condition) in the context of maintenance human error is best described as:

An error that is detected and corrected before the aircraft is released to service A failure of an electronic component caused by software corruption An error that occurs only during the first flight after maintenance An error whose adverse consequences may remain dormant and only become apparent later

Correct Answer:

An error whose adverse consequences may remain dormant and only become apparent later

Question 4

The 1990 British Airways BAC 1-11 windscreen blow-out, often used as a maintenance human-factors case study, was caused primarily by:

Fitting of incorrect (undersized) bolts during the windscreen replacement A design fault in the windscreen retaining frame Failure to carry out a pressurisation test after the work Corrosion of the airframe around the windscreen aperture

Correct Answer:

Fitting of incorrect (undersized) bolts during the windscreen replacement

Question 5

Within the eye, the cells primarily responsible for vision in low-light (scotopic) conditions are:

Cones, concentrated in the fovea Ganglion cells in the optic disc Rods, located mainly in the peripheral retina The cells of the ciliary muscle

Correct Answer:

Rods, located mainly in the peripheral retina

Exam overview

About this Exam

Prepare with the Part-66 Module 9 Practice Questions - EASA Part-66 Module 09 - Human Factors Exam practice quiz. This question bank includes 100 questions covering maintenance, engineer, because, dirty, and dozen. Use it to review important concepts, identify knowledge gaps, and build confidence for the related exam, course, or assessment.

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Part-66 Module 9 Practice Questions - EASA Part-66 Module 09 - Human Factors Exam

This practice set contains 100 questions from the matching question bank and focuses on maintenance, engineer, because, dirty, and dozen. Work through each question carefully, review the provided solutions, and revisit topics that need more study before your next attempt.

This is an independent study resource intended for practice and review; it is not an official examination or an endorsement by any organization named in the title.

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Part-66 Module 9 Practice Questions - EASA Part-66 Module 09 - Human Factors Exam

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