TUBE(1/4 IN) (P/N a729-48) - New Surplus

The a729-48 is a 1/4-inch rigid aircraft tube for fuel, oil, hydraulic, and pneumatic system routing. This aluminum tube connects with standard 37-degree AN flare fittings (AN818/AN819) or MS-series flareless unions per FAA AC 43.13-1B specifications. Commonly used in instrument pneumatic lines and fluid distribution networks on general aviation aircraft.

Installation requires proper flare or compression fitting assembly, support clamps at specified intervals, and torque applied per AC 43.13-1B to maintain alignment and prevent system leaks.

What is the TUBE(1/4 IN) (P/N a729-48)?

The a729-48 is a 1/4-inch rigid aircraft tube for fuel, oil, hydraulic, and pneumatic system routing. This aluminum tube connects with standard 37-degree AN flare fittings (AN818/AN819) or MS-series flareless unions per FAA AC 43.

What hydraulic fluid type is the a729-48 compatible with?

Hydraulic component compatibility depends on the aircraft system design. Common aviation hydraulic fluids include MIL-PRF-5606 (mineral-based), MIL-PRF-83282 (synthetic), and Skydrol (phosphate ester). Verify the TUBE(1/4 IN) against your aircraft maintenance manual for fluid compatibility.

Does the a729-48 come pressure-tested and certified?

Overhauled and repaired hydraulic components are pressure-tested per manufacturer specifications and include 8130-3 documentation. The TUBE(1/4 IN) is available in: New Surplus. Contact us for test documentation on your selected condition.

What is the turnaround time for hydraulic component orders?

In-stock hydraulic components ship same business day before 3 PM EST. We provide 24/7 AOG support at (904) 998-9101 for urgent hydraulic system needs. RFQ submissions are typically quoted within 24 hours.