Seat belts
TLDR
- Installed the rear seat belts
- Installed the front seat belts
Detail
Between yesterday and today, I installed all the seat belts.
Rear seat belt
The rear set is simple. There are a few bolts to connect the seat belt, and I just bolted them on and torqued to spec. The only thing is that I needed to pay extra attention to make sure the belt did not twist or anything. And since I don’t have the floor skin yet, so I had to be super light on my feet to avoid poking any hole on the floor.
Front seat belt
The spool retractor
Step 1 of the whole installation is that I needed to first unwind the seat belt from the retractor. The problem is, one of my retractors was fully locked. I couldn’t back out any seat belt.
I googled around, and finally decided to open the retractor and manually release the locking mechanism. I pried the cover open and used a tiny screw to release the internal lock. Then I was able to unwind the seat belt.
The rest is pretty similar to what Evan talked about on his video - I used a ruler to block the retractor once the seat belt was fully out.
I took a bunch of pictures so I remember how to put it back.
Bolting on the fuselage
Finally I bolted the 3 points onto the fuselage and canopy. The bolts are torqued to 20 NM per spec.
Service Bulletin 26
And as part of the installation, I followed instructions on SB-26 to make sure the bolts on the canopy are done correctly.
Ref: https://slingaircraft.com/download/1088/sling-4-tsi/11442/service-bulletin-0026-14062024-sling-tsi-seat-belt-fixtures.pdf