HONDA HA-420 — Pilot's Operating Handbook

This document is a temporary revision (TR 01.1) for the Honda HA-420 Airplane Flight Manual, detailing mandatory procedures for identifying and managing leaking power brake valves. It includes operational limitations and specific actions to be taken during ground operations and landings to ensure safety.

• Mandatory procedures for operations with specific power brake valves.
• Dispatch is prohibited with a known leaking power brake valve.
• Procedures must be performed prior to every flight and landing.
• Leaking power brake valves can cause brake pedal fade and asymmetry.
• Emergency braking function is not affected by internal PBV leakage.
• Report any irregularities for maintenance.
• Use rudder and nose wheel steering to compensate for any pull during landing.