What happens if a pilot's trip pairing is originally scheduled to release before 11 PM but actually releases after 2 AM?

In aviation regulations, particularly those that govern pilot duty and rest requirements, situations where a trip pairing is altered significantly can affect the required rest period for the pilot. If a pilot's trip pairing is originally scheduled to release before 11 PM, but it ends up releasing after 2 AM, the circumstances warrant an extended rest period.

The stipulation regarding the rest period usually accounts for the pilot's total flight time and the variations in their schedule. When the release time shifts to a later hour, especially beyond typical evening times, the pilot's need for recovery increases due to the potential impact of disrupted circadian rhythms. In this case, the regulation stipulates that the pilot is entitled to a minimum of 12 hours of rest to accommodate the extended work period and ensure adequate recovery before their next duty period.

This understanding reflects a broader commitment to safety and fatigue management within the aviation industry, ensuring that pilots remain well-rested and capable of performing their duties effectively. Thus, the correct answer is that the pilot is entitled to 12 hours of rest when experiencing an unanticipated delay like this.