Portable Stairway & Ladder Fall Protection Systems

The Mobile Access Stair System (MASS) provides a portable means of accessing elevated work areas with a fully functional stairway versus a conventional ladder ensuring sure footing while ascending to and descending from elevated work surfaces.

This system offers a wide variety of optional railing, cages, and anchor structures to provide ground-up fall protection for your elevated work activities.


FLS Mobile Stair Systems are designed to be moved manually or with the use of a tow bar and service vehicle. The system can be easily transported to locations where fall protection is needed to access work areas at height.


FLS Mobile Stair Systems can be utilized over a variety of equipment, vehicles and structures. The systems are designed for indoor and outdoor use and feature heavy-duty stabilization for use on uneven ground.


Lightweight construction make FLS Mobile Stair Systems easy to move into position by hand, forklift or other service vehicle.


System provides easy access and 100% fall protection from the ground up for up to two users for the duration of the work.

Custom Designs

Available in a range of heights and wheel styles, the system can be ordered to meet your application’s custom requirements. An FLS engineer will work with you to ensure your Mobile Access Stair System (MASS) is optimal for your work environment.


Systems are constructed from powder-coated, anodized high strength alloy specifically engineered for extra tall and wide applications. The enclosed rail keeps debris from weather elements out. All FLS systems are extremely durable and built to last with world class quality, materials and workmanship.

Full Stairs

The stairway design of the system makes access to elevated work areas easier and safer, especially while carrying tools.

Adjustable Height

FLS Mobile Stair Systems feature adjustable height capability. With multiple height ranges available, this system can be used to meet a variety of your access needs where needed while providing complete fall-arrest protection for workers.


Multiple accessories are available for the Mobile Stair System including cages, traveling rail, and anchor points, making it possible to equip the system to meet the needs of your specific application. Contact us for more information on stair system accessories. 

Mobile Access Stair Specifications

Part No.HeightWheelsWeight
4270075114"to 180"Rubber Molden1225 lbs
427007686" to 123"Urethane1000 lbs

Mobile Access Stair Accessories

Part No.DescriptionWeight
4220009Tripod Package (A)148 lbs
4220014Davit Anchor Points (B)136 lbs
4220015Horizontal Rail (C)193 lbs
4220039Guardrail Cage (D)60 lbs
4220134Rectangle Cage (not pictured)415 lbs

OSHA Regulations For Aircraft Fall Protection

Flexible Lifeline Systems portable ladder and stair systems meet the applicable standards of ANSI 14.3 Requirement for Fixed Ladders, OSHA 1910.26 Portable Metal Ladders, CSAZ11-M81 Portable Ladders, OSHA 1910.23 Guarding floor/wall Openings & Holes, and the Manitoba Workplace Safety & Health Division Fall Protection Guidelines.

These systems also comply with the latest OSHA/ANSI standards and regulations including OSHA 29 CFR Walking-Working Surfaces Rule and ANSI Z359.16 Product Performance Standard – Safety Requirements for Climbing Ladder Arrest Systems.

On November 17, 2016, OSHA published its final rule on Walking and Working Surfaces. The final rule covers a wide variety of general industry entities, including building management services, utilities, warehousing, retail, window cleaning, chimney sweeping and outdoor advertising. It does not change construction or agricultural regulations.

ANSI Z359.16 – This new standard received approval by the ASSE Board of Standards Review on November 2, 2016. It establishes requirements for the performance, design, marking, qualification testing, instructions for use, inspection, maintenance and storage, and removal from service of vertically oriented climbing ladder fall arrest systems consisting of flexible and rigid carriers with multiple attachment points and associated carrier sleeves for users within the capacity range of 130 to 310 pounds (59 to 141kg).

How can we help?

Our fall protection experts are available to answer your questions. Complete this form or call 1.800.353.9425