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Posted

I have read that you can replace the seat belts in an aircraft as preventative maintenance (ie pilot signs off the logbook).  I was wondering how far that could go... Does the replacement seat belt have to be OEM, or could I use an AMSAFE FAA TSO-C114 replacement belt.  Would the shoulder harness have to be fixed, or could I install a faa certified inertial reel myself so long as I use the original mounts (or would that require an STC)?

Posted

I installed the inertal reel ones myself about 2 years ago.  I got my mechanic to look at it and sign it off when I finished.  It's just a logbook entry, there is no STC.  There is also a FAA advisory circular on doing this as a minor mod with a logbook entry.

Posted

You can replace the existing seatbelts as configured with a TSO approved seatbelt assembly.   That includes shoulder harnesses, if equipped.  If you wish to add shoulder harnesses (we did) then it is a minor alteration with an Airframe rated mechanic's log entry.  Now, changing from fixed strap to inertial reel, I'm not so sure.

Posted

It depends on when your plane was manufactured.  If it was manufactured before shoulder harnesses were mandatory, the faa has given you more options for installing them. They do not have to be tsod or even meet the current restraint requirements. They recoginzed that something of a shoulder harnsess was better than no shoulder harness.


If your plane was manufactured with a fixed shoulder harness, then this should cover you.http://www.alphaaviation.com/PDFs/M20JUPGRADE.pdf

Posted

When I bought '48Q, fixed shoulder harnesses were installed.  I replaced them with Alpha inertial reels and signed off on it myself, and it hasn't been an issue at any of my annuals since then, but I couldn't say for sure that it was legal.

Posted

Quote: N601RX

It depends on when your plane was manufactured.  If it was manufactured before shoulder harnesses were mandatory, the faa has given you more options for installing them. They do not have to be tsod or even meet the current restraint requirements. They recoginzed that something of a shoulder harnsess was better than no shoulder harness.

If your plane was manufactured with a fixed shoulder harness, then this should cover you.http://www.alphaaviation.com/PDFs/M20JUPGRADE.pdf

Posted

The Alpha kit is not STC'd, but the parts are TSO'd.  If the parts you've found are TSO'd, I'd think you'd be fine to install them yourself.  If not, they may not be legal to install at all.

Posted

Quote: danb35

The Alpha kit is not STC'd, but the parts are TSO'd.  If the parts you've found are TSO'd, I'd think you'd be fine to install them yourself.  If not, they may not be legal to install at all.

  • 3 weeks later...
Posted

Quote: N601RX

I installed the inertal reel ones myself about 2 years ago.  I got my mechanic to look at it and sign it off when I finished.  It's just a logbook entry, there is no STC.  There is also a FAA advisory circular on doing this as a minor mod with a logbook entry.

Posted

When I installed the inertial reels on my F (replacing the existing fixed shoulder harnesses), I used the kits from Alpha Aviation.  They were (and still are) $350/side, and now come with a pushbutton release, which would help keep J-bar folks like me from accidentally releasing the seatbelt when we extend the landing gear.

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