08:00
Trailhead Departure Check-In: Confirm party count, vehicle license plate, and check satellite battery level (>90%).
11:00
Mid-Route Waypoint (3.0 hrs): Transmit preset "All OK, on schedule" beacon to emergency contact.
14:00
Summit / Turnaround Check (6.0 hrs): Non-negotiable turnaround deadline regardless of summit proximity.
17:00
Overdue Alarm Trigger (Trailhead ETA + 2 hrs): If no safe checkout received, SAR emergency dispatch is officially requested.