On the Mavic Pro the TRIPOD_MODE_ENABLED write succeeds but the flight controller keeps Tripod off, and the panel showed "Tripod on" for a moment before silently flipping back. The gate now reads the key back after the write and refuses with "The aircraft kept Tripod off." when it did not change. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>