EASA Part 66 : Digital Question15 Exam With
Complete Solutions
Question Number. 1. An aircraft system that, should it fail due to a software error, would
cause a significant reduction in safety margins may also cause.
Option A. no injuries to occupants.
Option B. injuries to some occupants.
Option C. the loss of the aircraft. - ANSWER Correct Answer is. injuries to some occupants.
Explanation. DO-178/ED-12 or the old AWN 45 (no removed/replaced).
Question Number. 2. An aircraft system allocated a software level of C that, should it fail due
to a software error, may cause.
Option A. injuries to some occupants.
Option B. injuries to a large proportion of occupants.
Option C. no injuries to occupants. - ANSWER Correct Answer is. injuries to some occupants.
Explanation. DO-178/ED-12 or the old AWN 45 (no removed/replaced). Download a copy from
the Tutorial Support forums.
Question Number. 3. An aircraft system allocated a Criticality Category of Hazardous has a
Software Level of.
Option A. A.
Option B. B.
, Option C. C. - ANSWER Correct Answer is. B.
Explanation. DO-178/ED-12 or the old AWN 45 (no removed/replaced). Download a copy from
the Tutorial Support forums.
Question Number. 4. An aircraft system that, should it fail due to a software error, would
cause a slight increase in crew workload, has a software level of.
Option A. D.
Option B. B.
Option C. C. - ANSWER Correct Answer is. D.
Explanation. DO-178/ED-12 or the old AWN 45 (no removed/replaced). Download a copy from
the Tutorial Support forums.
Question Number. 5. An aircraft system with a software level of D, should it fail due to a
software error, may cause the aircraft safety margin to be.
Option A. slightly decreased.
Option B. slightly increased.
Option C. significantly decreased. - ANSWER Correct Answer is. slightly decreased.
Explanation. DO-178/ED-12 or the old AWN 45 (no removed/replaced). Download a copy from
the Tutorial Support forums.
Question Number. 6. If due to a software error in an aircraft system that would cause injuries
to some of the occupants, the system has a software criticality category of.
Option A. major effect.
Complete Solutions
Question Number. 1. An aircraft system that, should it fail due to a software error, would
cause a significant reduction in safety margins may also cause.
Option A. no injuries to occupants.
Option B. injuries to some occupants.
Option C. the loss of the aircraft. - ANSWER Correct Answer is. injuries to some occupants.
Explanation. DO-178/ED-12 or the old AWN 45 (no removed/replaced).
Question Number. 2. An aircraft system allocated a software level of C that, should it fail due
to a software error, may cause.
Option A. injuries to some occupants.
Option B. injuries to a large proportion of occupants.
Option C. no injuries to occupants. - ANSWER Correct Answer is. injuries to some occupants.
Explanation. DO-178/ED-12 or the old AWN 45 (no removed/replaced). Download a copy from
the Tutorial Support forums.
Question Number. 3. An aircraft system allocated a Criticality Category of Hazardous has a
Software Level of.
Option A. A.
Option B. B.
, Option C. C. - ANSWER Correct Answer is. B.
Explanation. DO-178/ED-12 or the old AWN 45 (no removed/replaced). Download a copy from
the Tutorial Support forums.
Question Number. 4. An aircraft system that, should it fail due to a software error, would
cause a slight increase in crew workload, has a software level of.
Option A. D.
Option B. B.
Option C. C. - ANSWER Correct Answer is. D.
Explanation. DO-178/ED-12 or the old AWN 45 (no removed/replaced). Download a copy from
the Tutorial Support forums.
Question Number. 5. An aircraft system with a software level of D, should it fail due to a
software error, may cause the aircraft safety margin to be.
Option A. slightly decreased.
Option B. slightly increased.
Option C. significantly decreased. - ANSWER Correct Answer is. slightly decreased.
Explanation. DO-178/ED-12 or the old AWN 45 (no removed/replaced). Download a copy from
the Tutorial Support forums.
Question Number. 6. If due to a software error in an aircraft system that would cause injuries
to some of the occupants, the system has a software criticality category of.
Option A. major effect.
