Jumpseat: On Guard

Les Abend

Friday, April 01, 2011 at 05:05 PM ET

Verified

Key Takeaways:

Airline pilots generally monitor 121.5 (guard frequency), but may prioritize other frequencies (e.g., 123.45 air-to-air over South America) or avoid it during high-workload phases (below 10,000 feet) due to distractions and often erroneous chatter.
While frequently used for mistaken transmissions or ATC contacting lost flights, 121.5 is a vital channel for pilots to assist others in distress by relaying information and offering advice.
The author recounts a suspicious incident where a pilot, claiming a flight control failure and receiving assistance via 121.5, ultimately parachuted from his plane, an event that mirrored a past fraudulent attempt and highlights the complexities pilots face in discerning genuine emergencies.
Despite the presence of mistaken transmissions and suspicious incidents, monitoring guard frequency remains an important professional responsibility for aviators to assist those in genuine distress.

See a mistake? Contact us.

(March 2011) ON OCCASION, I AM ASKED if we airline types actually monitor guard frequency — 121.5. My stock answer is “Of course.” And for the most part, I’m telling the truth. However, in some circumstances it’s not practical. What are those circumstances?

I don’t want to speak for all my colleagues, but below 10,000 feet agl, which defines the sterile period for most commercial operations, I don’t make guard frequency a priority. Operating below 10,000 feet usually coincides with the terminal arrival or departure process. Chatter on another radio could be a potential distraction.