## Exhibit A Pinnacl X Multirotor Design Safety Improvements

Pinnacl X has teamed up with Central Connecticut State University department of engineering and Eversource to develop safe mult irotor Unmanned Aircraft System, UAS , called the Chameleon

. H igh tension power line flight testing under COAs 2013

- ESA

- 89

- COA and 2013

- ESA

- 96

- COA ha s been performed using a baseline quadrotor aircraft . Sever al needed areas of improvement has been identified and incorporated into the design of the aircraft, Chameleon , table 1

.
Table 1, Design Improvements for Flight within Close Proximity of High tension Power Lines and Structures

Problem: Pilot and observer interference using the quadrotor transmitter. Cause: Pilot is unable to operate the camera system and camera positioning while flying in close proximity of power lines. So lution: Use two separate controllers one for the pilot to control the aircraft and an additional controller to operate the camera. Problem: Aircraft susceptible to disturbance during calm wind conditions

. Cause: Unknown updrafts , thermals, wind shear aro und structures and tree canopies in calm winds

. Solution: Design a low profile / integrated multi rotor airframe that can handle higher wind disturbances than conventional multicopter designs. (See AHS publication exhibit J )

. Potential Problem: Aircraft vi bration in flight followed by loss of control

. Cause: Unable to inspect airframe connections

. Solution: Design a multi rotor that exposes the airframe connection points

. Problem: Unable to photo graph from underneath structures looking up

. Cause: Camera system hung below aircraft

. Solution: Design a multirotor with an integrated camera platform that has a 180 degree tilt range

. Potential Problem: Aircraft flyaway Cause: GPS signal loss Solution: Program autopilot to switch modes , to a non GPS mode, in the event of a GPS signal loss and an experienced pilot fly the aircraft

GPS signal loss has also occurred during flight testing with in the proximity of high tension power lines, structures, trees and close to the ground resulting in a temporary aircra ft flyaway. The aircraft was immediately recovered by switching to a non GPS mode and manually flying the aircraft. This has identified that a GPS Geo

- f ence will not always be a solution to keeping a multi rotor aircraft within a particular zone of space si nce it always requires a good GPS signal. This has also identified that an experience pilot is required to fly the aircraft at all times since manual flight may be required at any time . GPS signal loss has not occurred with UAS fixed wing aircraft since th ey require open areas to fly in. CCSU and Pinnacl X are working on a non GPS position holding capability for multirotor aircraft. Pinnacl X is also involved with a continuous improvement process involving the design and component life estimation. Currently the component life is unknown for the motors, electronics speed controllers, autopilot, GPS and sensors. Pinnacl X is working with CCSU to determining the component life by cyclic test of components . As a result components, motors, propellers and electronic speed controllers, will be replaced during the 100 hour maintenance schedule. In addition the PIC and observer must take the 4

## Exhibit A Pinnacl X Multirotor Design Safety Improvements

hour training course developed by Pinnacl X and have passed the exam with a grade of 80%, table 2. Also an instructor must go over the errors on the exams with the PIC and observer.

The Chameleon quadrotor has been used for high tension line and structure inspection since June 26, 2015. The aircraft has been found to be extremely reliable for flight in the wired environment. Due to the reliability of the aircraft it is proposed that it will be used for filming for movies and TV in this Section 333 E xemption request. The Chameleon quadrotor will be used for light weight pa yloads of up to 1 pound. The payload include GoPro cameras, and the Canon A2200 series cameras, Sony WX350 series cameras and the Panasonic Lumix series came ras. Additionally the Chameleon quadrotor is design to carry the FLIR Tau thermal imager. For the f light with larger payloads up to 7 pounds the DJI S1000 or DJI S900 will be used. The aircraft will be used with the DLSR series cameras. The DJI S1000 and S900 will undergo the same maintenance program as the Chameleon quadrotor.

Table 2. Pinnacl X Requ ired Training Course Topics

 Checklist

 COA Process

 UAS crash investigation

 FAA regulations

 Flight training

 Principles of Multicopter Flight

 Weather