This is a Minor Change Installation utilizing existing structural locations. (AC 43.13-2B) 

There are 5 different ways to do it depending on what your aircraft has:

Installation Option 1 – Utilizing rear seatback adjustment assembly PN 35-534247. Very early production Model 35 aircraft, those that came from the factory without a third window over the baggage compartment, were constructed utilizing a rear seatback adjustment assembly (PN 35-534247); which provides an excellent anchor point for a “Minor Change” upper torso restraint installation. This option requires that the owner/operator facilitates the fabrication of two .080 Shear Plates, left and right, which are installed under each slide assembly using upgraded hardware in order to anchor the upper torso restraints. Refer to photo 6.  Alpha Aviation can facilitate the creation of this part with a formal request. Please contact us for additional information on this option.

Installation Option 2 - Utilize rear seatback slide assembly PN 50-534070. This provides an excellent anchor point for a 3-point diagonal upper torso restraint installation. Refer to photos 1 & 3. You will see the restraints anchored through the slide assemblies rear mounting bolt into the primary fuselage structure as shown in photo 4.

Installation Option 3 - Utilize vacant aft seatback slide nutplates. A number of 35 and 95 series aircraft were delivered with a new self-locking rear seatback assembly, beginning with model K35. The production line continued producing an unknown number of fuselages that retained the AN4 nutplates and steel straps which may be found behind the upholstery. We have reason to believe the arrangement ended with the model M35. To verify that the aircraft being modified meets the requirement of Option 3 reference exterior photo 5. Viewing the fuselage right side, first verify that the vertical line of rivets above the baggage door are present AND that the triangular rivet grouping aft of the vertical fuselage frame also match. Moving to the left side verify that the triangular rivet grouping aft of the vertical fuselage frame also match. Note - the left side AN4 nutplate is blind riveted and therefore the rivet heads do not appear on the left exterior. Further verification can be made by checking that the interior access holes are present as shown in photos 2 and 4. If you wish to further verify this, it can be done by carefully opening the interior panels to visually verify the nutplates are present, and their exact locations.

Installation Option 4 - Utilizing a vacant seatback restraint cable attachment. A number of 35 and 95 model aircraft were constructed utilizing rear seat back restraint cable assemblies which are now vacant as a result of changes in the interior furnishing. These rear seatback restraint cables aft anchor points may be able to be recovered and repurposed.

To survey for the possibility that your airframe may contain these anchor points, refer to photo number 5 with attention to the aft vertical row of rivet heads. If there is a triangular grouping of 8 rivets aft of that vertical row of rivet heads there is a strong possibility that the afore mentioned strap assemblies are present. To verify the presence of vacant anchor straps open the interior upholstery above the baggage door. Looking into the hollow area you should find a steel strap stored there. Proceed to verify the left sidewall in the same manner. Refer to photos 1, 2 & 3.

Installation Option 5 - Sharing the seatback restraint cable attachment. A number of 35 and 95 model aircraft were constructed utilizing rear seat back restraint cable assemblies. The rear restraint cable assemblies aft anchor points are designed such that the hardware configuration can be altered to allow these anchor points to be used to hold both the seatback restraint cable and upper torso restraint.

You Will Receive;

• 1 (one) single diagonal AmSafe TSO-C114 Fixed Strap (Manual/Static) shoulder harness with new lap belt
• All required hardware
• Installation Instructions
  
• 8130-3 Airworthiness Tag