Which statement is true for software to be used for avionics?

• It is core software, operational software and word processing software.

• It is core software, operational software and graphic processing software.

• It is core software, operational software and a database.

When can a change to the core software of a Line Replaceable Unit (LRU) be made?

• When the SRM is available and states that changes to that LRU are permitted.

• Only when authorisation of the aircraft manufacturer and the LRU manufacturer has been given.

• By authority of the airline, but only when it guarantees an equivalent level of safety.

Which is usually effected by a database software change?

• Parameter values only.

• Programmes and parameters.

• This is part of the control loop for the aircraft and should not be changed.

Which is a function of the operational software?

• It defines the kind of display in the cockpit.

• It interfaces one Line Replaceable Unit (LRU) to another.

• It provides parameter values e.g. a/c weight.

Why should an aircraft's core software never be touched?

• Because it is not part of the aircraft control loop.

• Because it is part of the aircraft control loop.

• Because it produces very high voltages.

Which system is affected by the implementation of new database software?

• The kind of cockpit display is changed.

• Only parameter values are changed.

• The function of the whole aircraft is changed.

Which statement is correct regarding programme changes to level A software?

• Changes can be made by all maintenance personnel

• The programme must never be changed as it is part of the control loop of the aircraft

• Changes can be made by authorised personnel only

Which statement is correct regarding core software changes?

• They can be made by maintenance personnel with CAA authorisation.

• They can be made by authorised personnel with CAA authorisation.

• They can be made with agreement of the aircraft manufacturer and the LRU manufacturer.

What is the purpose of "Software Considerations in Airborne Systems and Equipment Certification" (DO-178B/ED-12B)?

• To define the hardware requirements for aircraft systems

• To establish design assurance levels for software used in aircraft systems

• To provide guidance to flight crews during Instrument Flight Rules (IFR) approaches

• To regulate the use of aeronautical databases in aircraft

How many levels are defined in DO-178B/ED-12B, and what are they?

• Four levels; Major, Hazardous, Minor, and No Effect

• Five levels; Catastrophic, Hazardous, Major, Minor, and No Effect

• Three levels; Catastrophic, Severe, and Major

• Six levels; Catastrophic, Severe, Hazardous, Major, Minor, and No Effect