Exhibit G Pinnacl X Lost Communication Procedure

Loss of Communication between Pilot and Observer: 

The pilot and observer will be standing ten meters from each other and within visual and vocal range. 

The pilot and observer can change position to provide the best vantage point during the flight operation. 

The observer should change position to following the flight path. The pilot should not change position 

once the aircraft is in close proximity of a structure or lines. Both the pilot and observer will be in visual 

line of sight of the multirotor aircraft, Table 1. If any of the four communication requirements listed in 

table 1 are violated the pilot will reposition the multirotor to a safe holding point and request that the 

communication requirements be reestablished. If that is not possible the pilot will land the aircraft and 

the condition will be reestablish. 

Table 1, Communication Requirements for Multirotor Aircraft Flight 

1) 10 meter position between pilot and observer. Observer should change 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 of sight of the multirotor aircraft.

Loss of Communication Between Controller and Multirotor Aircraft 

If the communication link between the transmitter and receiver is lost the multirotor aircraft will auto 

land by holding its current position and throttle reduction. 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 multirotor aircraft to a close 

position and or land the aircraft as necessary. 

Additional Safety Features 

The video on screen display, OSD, displays the following data, battery voltage of the multirotor aircraft, 

signal strength between the controller and aircraft, aircraft position and GPS satellite signal strength. 

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 multirotor signal strength is reduced. 

Pilot and Observer Procedures

The observer and pilot work together to position a multirotor for inspection. Prior to the flight the 

observer and pilot will walk the designated flight area and identify the flight path and alternate flight 

paths around obstacles. 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 distance away from the structure. Once the flight path has been identified and agree 

on, the pilot will fly the aircraft to the holding position near a structure. Next the observer will direct the 

pilot to reposition the multirotor next to a structure for taking photographs and or video. The observer 

will us the real time video to provide guidance to the pilot along with line of 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 vantage point. The pilot should move only when the aircraft is GPS position hold at 

the holding positon and remain at the same location when the aircraft is within close proximity of the 

structure and or lines. The pilot and observer must maintain the communication requirements for 

multirotor aircraft flight as outline in table 1. In the event of a failure of one of the communications 
Exhibit G Pinnacl X Lost Communication Procedure

requirement the pilot will reposition the aircraft to a safe location and request that the communication 

requirements be reestablished. If that is not possible then the pilot will land the aircraft and reestablish 

the communications.