Free Standing
Access Stair System
Purpose-built to provide safe, reliable, and efficient overhead access wherever it’s needed most.
Widely trusted in the aviation industry for maintenance and servicing, its adaptability and robust engineering have extended its use into marine, shipbuilding, defence and industrial sectors.
From aircraft hangars to shipyards and heavy industry, the BTS AirStair delivers durable, compliant access solutions designed to perform in the toughest environments.
Climb Safely.
Work Confidently.
The BTS AirStair is designed with operators in mind, ensuring ease of use, compliance and industry leading functionality. Its cordless push-button electric height adjustment makes setup quick and easy.
Workers are secured to an active fall arrest system from the very first step, ensuring total safety while climbing and working. Simple, safe, and built to last — climb with confidence, the BTS AirStair takes access solutions to the next level.
Engineered for Demanding Industries
Whether in aviation, marine, shipbuilding, Defence, or industrial maintenance, the BTS AirStair is more than just a stair system — it’s a feature-packed solution built for safety, efficiency, and long-term performance.
Aviation
Marine
Industrial Maintenance
Mining
Defence
Feature-Packed, Performance-Driven
Engineered with advanced features to maximise performance, safety, and ease of use.
Dual-user fall arrest system
Safely supports two operators climbing at the same time with SRL protection. Each arm can be fixed in place or move independently to follow the worker, providing continuous overhead fall protection, increasing the Safe Working Area, and reducing the risk of pendulum swing falls.
750mm aluminium stair treads
Open anti-contaminant design ensures safe footing in all conditions.
Stabilising jacks & Adjustable Outriggers
Engineered to provide rock-solid stability during use and fold neatly for compact towing.
Independent counter-weighted base
Stability without relying on aircraft fuselage or external foundations.
Hi-visibility day & night tape
Ensures compliance with IATA safety requirements and keeps crews visible.
Chemical resistance
Designed to withstand Skydrol and other aggressive agents found in aviation environments.
Simple mobility
Towable up to 10km/h, 6mph, or easily repositioned by just two operators.
Accidental contact protection
Engineered to float freely, the platform is fitted with a rubber bumper for extra protection against accidental contact.
Strong, smooth mobility
Heavy-duty steel casters with a PU tread deliver strength, quiet operation, and floor protection.
A built-in shock-absorbing design ensures smooth rolling over bumps and cracks
Electric motor
30V lithium battery system powers smooth, reliable platform raising and lowering.
Liner actuated ladder platform support
Provides additional stability and support for safe, controlled ladder positioning.
Self-Locking mechanical Safety System
Powered by a 30V lithium battery, our linear actuator locks securely in place at any height — eliminating the risk of sudden drops that can occur with hydraulic systems. This critical feature helps protect valuable aircraft and ensures operator safety.
Aerospace-Grade Safety Backup
An aerospace-designed brass follower nut provides a secondary safeguard and acts as a wear indicator, allowing maintenance checks without disassembling the unit. This saves time and ensures your equipment stays in top condition.
Intuitive, User-Friendly Controls
Simple up/down push-button controls make operating the stairs easy and intuitive. Operators can adjust height smoothly and confidently with just the touch of a button.
Intelligent Charging for Reliable Performance
The built-in smart charging system allows the battery to be safely charged overnight, ensuring the unit is always ready to go at the start of the day.
Smart Safety Control
With robust limit switches, the stairs automatically stop before reaching unsafe limits, protecting your investment and giving users confidence every time they operate the unit.
Explore the BTS AirStair in 3D
Rotate, zoom, and inspect the BTS AirStair from every angle.
Find your Engineered Solution
Explore our full range of Free Standing Access Stair Systems and specifications in our downloadable brochure.
Integrated Accessories
Built-in components that support safe, efficient operation.
SRL Device
A self-retracting lifeline automatically adjusts to the user’s movement, providing continuous fall protection without excess slack. Its quick-activating braking system reduces fall distance and impact forces, helping to keep workers safe and productive at heigh
Wide Jaw Diversion Sheave
This attachment allows the user to easily divert the SRL line down the stair, providing simple robust fall protection from the ground up. Transitioning past the wide jaw diversion sheave is simple allowing users up past the platform without the need to unhook.
Retractable SRL tag line
The self-retracting tag line allows users to retrieve the SRL connector quickly and securely from ground level. Once disconnected from the SRL, it instantly stores itself neatly away eliminating potential trip hazards and loose FOD.
BTS AirStair Models
Two adjustable AirStair models to meet diverse height and access requirements.
BTS AirStair 703357
Adjustable platform height 3.3m–5.7m (10.8–18.7 ft).
BTS AirStair 704884
Adjustable platform height 4.8m–8.4m (15.7–27.5 ft).
Safe Working Zones
Safe working zones for AirStair with the Umbrella Fall Protection (UFP).
BTS AirStair 703357
BTS AirStair 704884
Model Specifications
Essential measurements to guide model selection and safe operation.
Aircraft Compatibility
Engineered for safe access across a wide range of aircraft models.
Downloads
Brochures, spec sheets, manuals
and compliance docs.
BTS AirStair Spec Sheet
Download
Let’s Find Your Solution
Get in touch with our team today to discuss your project requirements and find the right solution.