During a stabilized approach, what should be briefed and completed before 1,000 feet HAT in IMC?

In a stabilized approach during Instrument Meteorological Conditions (IMC), it is crucial to brief and complete approach briefings and checklists before 1,000 feet Height Above Touchdown (HAT). This is because the approach briefing ensures that all crew members are aware of the critical aspects of the approach, including the expected procedure, any potential missed approach procedures, and weather conditions. It also covers altitudes, cross-reference points, and specifics related to the approach being conducted.

Completing checklists before reaching this altitude is vital as it confirms that all necessary preparations and confirmations have been made for a safe landing. This includes ensuring that the aircraft is set up correctly for landing, configurations are correct, and that any abnormal situations have been addressed prior to descending below 1,000 feet. All this is critical for maintaining safety and situational awareness during a critical phase of flight.

Concerning the other choices, while fuel calculations, final descent checks, and aircraft performance metrics are certainly important components of flight operations, they do not hold the same critical time frame regarding their completion before reaching 1,000 feet HAT, particularly in the context of focus during a stabilized approach in IMC conditions. The priority is to ensure that the team is fully briefed