Judicial Review - Certiorari - Section 5C Civil Aviation Act - whether the Civil Aviation Authority and Minister acted reasonably and within the bounds of their discretion in appointing an Investigator-in-charge of an aviation occurrence when allegations of bias were made against the Investigator-in-charge by the affected airline operator - Whether the appointment of the Investigator-in-charge was tainted by procedural impropriety on the ground that allegations of bias raised with the Civil Aviation Authority were not brought to the attention of Minister.