## Exhibit D Pinnacl X Pilot and Visual Observer Operating Procedure

Fixed Wing Operating Procedure The observer and pilot work together to identify the route of flight . Prior to the flight the observer and pilot will walk the designated takeoff and landing area area and identify the flight path and alternate flight paths around obstacles. The pilot and visual observer must inspect the takeoff and landing area
and remove all debris. Also the team will identify possible forced landing areas in case they encounter a problem or emergency. The pilot and an observer will discuss and agree on the approach to a holding position at a safe distanc e away from the inspection flight and or test flight areas . Once the flight path has been identified and agree d on, the pilot wi ll fly the aircraft to the holding position near the designated inspection or test flight location . Next the observer will check the payload and telemetry

status. The observer will us e the real time video to provide guidan ce to the pilot along with line

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- site. The observer can use first person view, FPV, goggles or video screen. Also the observer should position themselves in a different location to see the aircraft from a different angle. The observer should move with the aircraft to provide the best van tage point. The pilot should move only when the aircraft is in GPS position hold at the holding positon and remain at the same location when the aircraft is within
close proximity of the inspection or test positions . The pilot and observer must maintain th e communication requirements for fixed wing aircraft flight as outline d in T able 1. In the event of a failure of one of the communications requirement

, the pilot will reposition the aircraft to a safe location and request that the communication requirement s be reestablished. If that is not possible then the pilot will
land the aircraft and reestablish the communications.

Table 1, Communication Requirements for Fixed Wing Aircraft Flight

1) 10 meter position between pilot and observer . Observer should ch ange positions during the flight for the best vantage point. The pilot should only move when the aircraft is at a holding point, not when the
aircraft is in close proximity of a structure or lines.
2) Pilot and observer must be able to see each other

. 3) Pilot and observer must be able to hear each other in a normal tone

. 4) Pilot and observer must be in line

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- s ight of the fixed wing aircraft.

Loss of Communication between Pilot and Observer: The pilot and observer will be standing two meters from eac h other and within visual and vocal range. Both the pilot and observer will be in visual line of sight of the aircraft, table 1. If any of the four communication requirements listed in T able 1 are violated the fixed wing aircraft will be landed and the

con dition will reestablished before flight.
Loss of Communication Between Controller and Aircraft
If the communication link between the transmi tter and receiver is lost the fixed wing aircraft will auto land by holding its current position and throttle redu ction. The communication link strength is monitored continuously and the transmitter will beep if there is a signal strength reduction. If there is a significant reduction in signal strength the pilot will immediately fly the aircraft to a close position a nd or land the aircraft as necessary. Additional Safety Features The video on screen display, OSD, displays the following data, battery voltage of the aircraft, signal strength between the controller and aircraft, aircraft position and GPS satellite sign al strength. Or the pilot’s transmitter will display the telemetry. The pilot also can set a timer on the transmitter. The controller will also provide an alarm when the battery level is critical or if the aircraft signal strength is

reduced.