How many minutes should a flight attendant subtract from the NTSBO time when preparing for landing?

When preparing for landing, a flight attendant is advised to subtract 5 minutes from the NTSBO (No Time Set, Based On) time. This guideline is essential as it allows flight attendants to ensure they are adequately prepared for landing, which includes securing the cabin, ensuring that all passengers are in their seats with seatbelts fastened, and that the cabin is ready for the landing phase. Subtracting this time helps to create an efficient routine, ensuring that all necessary safety protocols are completed before the aircraft begins its descent and approach. The 5-minute window offers a practical buffer, allowing the crew to address any final tasks without running into last-minute rushes or missing critical safety steps.