Part 3

Question 1

Incidents/accidents in aviation maintenance, caused by human errors, are mainly
attributed to:
A) Lack of skills.
B) Organizational errors.
C) Limited skills.
D) Insufficient written communication.

Answer 1

B) Organizational errors.

Question 2

Active failures:
A) Have no an immediate effect on aircraft maintenance or operation
B) Are not connected to latent failures on aircraft maintenance or operation
C) Have an immediate effect on aircraft maintenance or operation

Answer 2

C) Have an immediate effect on aircraft maintenance or operation

Question 3

Maintenance errors contribute to what percent in aircraft accidents and incidents.
A) 18 %
B) 10 %
C) 12 %
D) 20 %

Answer 3

C) 12 %

Question 4

The term “motivation” with respect to aviation safety, determines:
A) What a person is doing in a given situation
B) The difference -that is reflected- between what a person can do and what he
will do
C) Generally, what ever drives a person to do something in a given situation

Answer 4

B) The difference -that is reflected- between what a person can do and what he
will do

Question 5

Which one of the following is the most effective way in avoiding/preventing errors:
A) Making sure that procedures are followed
B) Looking into reported accident analysis
C) Evaluating or assessing errors committed in the past

Answer 5

A) Making sure that procedures are followed

Question 6

Mistakes are errors which usually occur:
A) At the task execution stage
B) At the planning stage
C) At the final stage of the performing a task

Answer 6

B) At the planning stage

Question 7

A violation is
A) a deliberate departure from the rules
B) an unintentional error
C) an intentional act of sabotage

Answer 7

A) a deliberate departure from the rules

Question 8

Defects in system design,training,maintenance or the organization,can lead to human
error.These defects can lie dormant for lengthy periods of time until a combination
of latent conditions and active human error trigger an accident. Accidents are seldom
the result of a single event,most result from a series of events in an “error chain”.
This paragraph best describes:
A) Multiplicity in chain error
B) Latent error prevention model
C) The swiss cheese error model
D) Reasonable cause error analysis

Answer 8

C) The swiss cheese error model

Question 9

A company culture is reflected through:
A) The way work tasks are done or completed on a day to day basis.
B) The way the company is planning its tasks or issues.
C) The time frame within which tasks are completed.
D) The decision making process the company follows

Answer 9

A) The way work tasks are done or completed on a day to day basis.

Question 10

Slips can be thought of:
A) As action which were performed in the wrong procedure
B) As actions not carried out as intended or planned
C) As actions brought about by faulty planning

Answer 10

B) As actions not carried out as intended or planned

Question 11

Whose responsibility is it that an engineer remains current on new technology and
procedures?
A) The engineer’s
B) The organization’s
C) The CAA’s

Answer 11

A) The engineer’s

Question 12

A shift hand-over is where
A) each individual person hands over their work
B) a shift supervisor hands the work over to a complete shift
C) the work done is written down by a company organisation

Answer 12

B) a shift supervisor hands the work over to a complete shift

Question 13

Which of the following increases mainly the likelihood of Violating the rules or
procedures in an aircraft maintenance unit.
A) Over prescriptive procedures
B) Poor working conditions
C) Time pressure and high workload

Answer 13

C) Time pressure and high workload

Question 14

Human error has been identified as a casual factor at what percentage of aviation
accidents and incidents.
A) 70 - 80 %
B) 40 - 50 %
C) 50 - 60 %
D) 30 - 40 %

Answer 14

A) 70 - 80 %

Question 15

Defects in system design, training, maintenance or the organization can lead to
human error. These defects can lie dormant for lengthy periods of time until a
combination of latent conditions and active human error trigger an accident.
Accidents are seldom the result of a single event, most result from a series of events
in an “error chain” This paragraph best describes:
A) Multiplicity in chain error
B) The swiss cheese error model
C) Latent error prevention model

Answer 15

B) The swiss cheese error model

Question 16

An accident is the outcome of:
A) Misjudgement at a critical moment.
B) Many incidents that coincided at a given moment.
C) Physical fatigue of employee.
D) Lack of dissemination of information

Answer 16

B) Many incidents that coincided at a given moment.

Question 17

Re-occurrence of incidents can be reduced through:
A) Taking corrective action immediately after an incident.
B) Collecting all data, proceed to analysis followed by corrective action.
C) Improved working conditions.
D) Proper incident reporting.

Answer 17

B) Collecting all data, proceed to analysis followed by corrective action.

Question 18

Accidents in aviation maintenance related to human error show that:
A) They are increasing through the years.
B) They remain steady through the years.
C) They are declining.
D) They are fluctuating within limits.

Answer 18

A) They are increasing through the years.

Question 19

Re-occurrence of incidences can be reduced through:
A) Taking corrective action immediately after an incident.
B) Collecting all data, proceed to analysis followed by corrective action.
C) Improved working conditions.
D) Proper incident reporting.

Answer 19

B) Collecting all data, proceed to analysis followed by corrective action.

Question 20

An aircraft engineer/Technician in his effort to expedite or cut-off corners to
complete a task can be classified as a
A) Mistake
B) Lapse
C) Violation
D) Slip

Answer 20

C) Violation

Question 21

Which of the following is the main reason for which aviation personnel don’t use
maintenance Procedures.
A) People prefer to rely on their own skills and experience
B) People assume they know what is the procedure
C) People resent being told how to do their job
D) People believe that experienced people don’t need them

Answer 21

B) People assume they know what is the procedure

Question 22

A positive approach towards reducing human errors, implies the understanding in
that:
A) Technicians should learn from their own mistakes
B) Dissemination of information on human errors made by others is of vital
importance
C) Both of the above

Answer 22

C) Both of the above

Question 23

An effective way of reducing human errors,and consequently incidents and
accidents, is to evaluate
A) The reported incidents.
B) The reported accidents
C) Fatal accidents only.
D) B+C

Answer 23

A) The reported incidents.

Question 24

In aviation maintenance, tasks should be assigned to:
A) Experienced personnel only.
B) Certified staff of Q.C.
C) Authorized staff, who always comply with procedures of maintenance manuals.
D) Anyone, provided he follows procedures.

Answer 24

C) Authorized staff, who always comply with procedures of maintenance manuals.

Question 25

Which type of human error is easiest to correct?
A) Variable error
B) Constant error
C) Reversible error

Answer 25

B) Constant error

Question 26

Active failures:
A) Have not an immediate effect on aircraft maintenance or operation
B) Are not connected to latent failures on aircraft maintenance or operations
C) Have an immediate effect on aircraft maintenance or operation

Answer 26

C) Have an immediate effect on aircraft maintenance or operation

Question 27

Within an aircraft maintenance unit safety standards should always be in line with
the financial status of the company:
A) True
B) False

Answer 27

B) False

Question 28

An experienced engineer fits the wrong seal during a routine component change, this
is…
A) skill based.
B) knowledge based.
C) rule based

Answer 28

C) rule based

Question 29

What are the slips?

Answer 29

Actions not carried out as intended or planned.

Question 30

What is known as environmental capture?
A) When an engineer carries out a certain task frequently in a certain location.
B) When an engineer performs a task considering the environmental conditions.
C) When an engineer performs a task adapting always with the environmental
conditions.

Answer 30

A) When an engineer carries out a certain task frequently in a certain location.

Question 31

Actions not carried out as intended or planned are well known as:
A) slips.
B) lapses.
C) mistakes.

Answer 31

A) slips.