The 554-471 is a Piper OEM parking brake cable assembly used in aircraft braking systems to mechanically transmit pilot input from the cockpit parking brake control to the brake actuating mechanism on the landing gear.

In typical Piper aircraft applications, this cable is part of the parking brake system linkage, allowing the pilot to engage and hold brake pressure without continuous pedal input. When the parking brake handle is actuated, the cable pulls or locks the brake valve or mechanism, maintaining hydraulic pressure in the brake lines to secure the aircraft during ground operations.

The cable assembly is designed for smooth, reliable force transmission with minimal friction and stretch. It typically includes a flexible inner cable, protective outer housing, and factory-terminated ends for secure attachment to the parking brake control mechanism and brake system interface.

Manufactured to Piper OEM specifications, the cable uses corrosion-resistant stainless steel inner wire and durable protective sheathing, engineered to withstand repeated actuation, vibration, and environmental exposure such as moisture, temperature variation, and contaminants commonly encountered in aircraft service environments.

Proper adjustment and routing are critical for correct brake function. Excessive friction, incorrect tension, or cable wear can result in reduced braking effectiveness or improper parking brake engagement.

Key features include:

Piper 554-471 parking brake cable assembly (OEM component)
Transmits cockpit parking brake input to brake system
Maintains hydraulic brake pressure for parking function
Flexible stainless steel inner cable construction
Protective outer housing for durability and abrasion resistance
Designed for smooth, low-friction mechanical operation
Resistant to corrosion, vibration, and environmental exposure
Pre-terminated ends for direct installation
Critical for safe ground securing of aircraft
Direct replacement part per Piper IPC specifications