Can the CRJ be towed without a towbar?

In regard to towing a CRJ aircraft without a towbar, specific conditions dictate when and how it might be permitted. The use of a towbar is the standard and preferred method for towing to ensure safety and to prevent damage to the aircraft's nose gear and other components. If towing without a towbar is to be considered, it is generally restricted to specific situations, such as during maintenance or emergency scenarios where certain safety protocols are observed.

The reason why option B is correct lies in the necessity to adhere to those safety conditions, which may include particular guidelines regarding personnel training, the environment in which the towing occurs, and operational protocols designed to mitigate risks. This reflects a cautious approach to aircraft handling, prioritizing safety and damage prevention.

The other options either suggest that it is permissible without restrictions or imply that towing is entirely prohibited, which does not align with the guidelines established for handling the CRJ in specialized circumstances. Proper understanding of these limitations is essential for safe aircraft operations.