Aerodyne Semi-Stowless Bag Exchange

Written by Kolla

Aerodyne has issued Service Bulletin SB121817 regarding semi-stowless deployment bags delivered prior to Nov 1st, 2017. This does NOT affect bags delivered after November 1st. Those can be identified red stow pockets. Bulletin status is mandatory and exchange should be completed by April 30, 2018.

From Aerodyne’s website:

PD New Beginning

With the use of semi-stowless bags, there are variables that affect the controlled deployment of parachute suspension lines, including canopy size selection & materials, line types, packing techniques, etc.

As more of our customers have ordered semi-stowless bags, we have seen inconsistencies on the openings while using these bags. This is a new situation we have not seen on the thousands of Icon containers equipped with the standard traditional elastic stow closure.

Based on these reports, Aerodyne has performed additional tests on the design of this semi-stowless bag in different conditions. These conditions accounted for a wide variety of variables such as canopy sizes related to the bag size, types of canopy fabrics, types of lines, opening speeds, and more importantly a variation of canopy packing techniques that we understand are used in the field.

Through this additional testing we have determined that conditions can exist causing a premature release of lines from the bag. This uncontrolled deployment of lines may cause variations in opening characteristics, and could lead to lines being caught on the container or jumper.

As a result, we have developed an improved semi-stowless bag design that better addresses these issues. To increase safety for customers using the original semi-stowless design, Aerodyne wishes to offer the latest version of this new design in a mandatory exchange program that will upgrade all Aerodyne original semi-stowless bags for our customers.


For more information or to sign up for your replacement bag, please visit the Aerodyne website.

Click to view or download bulletin:  Service Bulletin SB121817 – Aerodyne Semistowless Final




  • Owned the 252 stowless design way back when. Just coil the lines in the bottom of the pack tray and place the canopy on top of them. Fast repacks. Until someone filmed the deployment with a high speed camera. Showed the container flaps blowing through the lines as they deployed. After that everyone with this system received bags.

    • Oh wow – have to admit that I’m not familiar with that system, but sounds like you got some stories in you. Skydiving gear has certainly been in rapid development over the past 20 years or so.

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