McFarlane MCS1704-1 Roller (Seat Large) is an FAA-PMA replacement seat roller engineered for Cessna aircraft equipped with articulating or infinitely adjustable seats. Designed to restore smooth seat travel along the seat rail, this precision-machined roller helps ensure reliable seat adjustment while reducing friction and wear within the seat track assembly.

Manufactured from high-strength molybdenum disulfide-filled nylon, the roller offers excellent durability, self-lubricating properties, and superior wear resistance compared to conventional OEM components. Its fully machined construction provides a smooth surface finish and consistent dimensional accuracy, contributing to improved seat operation and extended service life.

The MCS1704-1 is commonly installed with the compatible seat roller bushing and related hardware as part of an approved seat maintenance or overhaul. It supports compliance with applicable FAA Airworthiness Directives addressing inspection and replacement of seat components on compatible Cessna aircraft, helping maintain safe seat locking and adjustment performance.

Routine maintenance should include inspection of the roller for wear, flat spots, cracks, and smooth rotation. Replacing worn seat rollers helps maintain proper seat movement, minimizes seat rail wear, and contributes to overall occupant safety.

Key Features

- Part Number: MCS1704-1
- Manufacturer: McFarlane Aviation
- Component: Roller (Seat Large)
- Approval: FAA-PMA replacement part
- Material: Molybdenum disulfide-filled nylon
- Designed for Cessna articulating and infinitely adjustable seats
- Precision-machined for smooth seat travel and reduced wear
- Self-lubricating construction for enhanced durability and long service life
- Compatible with approved seat roller bushings and maintenance kits