A remote pilot and visual observer are conducting a flight when the VO's radio fails mid-operation. The aircraft is at 350 feet AGL and 300 meters away. The pilot can still see the aircraft. What is the most appropriate response?

Why →When the communication link between PIC and VO fails, the crew loses a safety layer. The VO cannot call obstacles, traffic, or drift warnings the pilot may not see. The appropriate response is to reduce the operational risk: bring the aircraft to a distance and altitude where the pilot can manage VLOS independently, then decide whether to continue or land. CRM principles require acknowledging degraded resources and adjusting the plan.

The trap →Simply continuing the flight ignores the degraded crew resource. VLOS is maintained but the VO's safety function is gone. Continuing as if nothing changed is a CRM failure. Relying on hand signals introduces them as a backup without establishing whether the pilot is in a position to see them at 300 meters.

Field note →Pre-flight CRM includes a communication check between PIC and VO. Establish backup signals before the flight, not after a radio fails. A simple agreed hand signal for 'land now' costs nothing and covers communication failures.