How often must an air taxi operator conduct emergency training?

An air taxi operator is required to conduct emergency training initially and then annually to ensure that all flight crew members are adequately prepared to handle various emergency situations. This requirement is crucial because emergency procedures must be fresh in the minds of the crew in order to react swiftly and effectively when a situation arises.

Annual training allows operators to assess and refresh crew knowledge on emergency protocols, thereby enhancing safety within air taxi operations. This is in line with safety regulations set forth by aviation authorities, which emphasize the importance of regular training to maintain operational proficiency and readiness.

The other options suggest frequencies that do not align with the standard regulatory requirements. For example, quarterly training may be deemed excessive for most operators, while every six months could be more frequent than necessary. Training every two years could potentially lead to a decline in skill retention, which is why an annual requirement strikes a balance between operational readiness and regulatory compliance.