Shoulder Harness & Belts

[JimC]

The middle seats can get shoulder harnesses form serial number 1194 onward. The rear seats can get them from serial number 1317 onward.

My parts manual shows that the middle seats take the same shoulder belt assembly as the pilot & copilot. The rear seats take a different one. The part number varies with color.


I'm considering the 3-point airbag system from Amsafe instead of the 4-point BAS system (which is really a 3-point with a split shoulder harness.)

[wslade2]

awesome. I'm in the serial number range. Looks like I take it just need to buy the parts/belts for the middle seats (the ones I want to do) and install. As you say, same belts as for pilot and copilot. Anchor hole for shoulder harness already installed at factory? (I'll be looking next time I go out)

[JimC]

It looks like that to me, and others have reported finding mounting attach points under the headliner.

I can't upload the manual (too large) but send me a PM and I'll send you a PDF with the relevant pages & part numbers.

[hayesjaj]

Can confirm the mounting holes on my 337G (1535). My interior is out right now and I can take pictures of the mounting holes tomorrow if you’d like. I plan to install BAS in the front, something with inertial reel in the middle and the straight cessna kit in the rear.

[JAG]

After installing my BAS in the front, I moved the front belts (cessna 3 point harness) to the second row and it fit almost perfect!

[CO_Skymaster]

@JimC

Did you follow up on your purchase for the AMSafe 3-point harness. My aircraft is a Cessna 337A around 400 for the serial number, so from reading some of these posts it will only have the 3-point harness for the pilot and copilot.

Karl

[JimC]

I installed the 4-point BAS system in my SkyMaster and it worked fine. I would change to the rotary buckle instead of the 4-piece attachment. The 4-piece is mechanically simpler, but is harder for passengers to figure out.

I've also installed the AmSafe airbags in another plane and I like them. They come with a shoulder reel but it is NOT required for the airbags to be legal, functional and safe - you can install the lap belt & airbag without the shoulder reel. If you're looking for extra safety for the rear seats this is what I'd recommend. Installation was fairly straightforward (I did it myself with an A&P signoff.) Disconnection is easy if you want to remove the seats for any reason.