IFALPA published a Safety Bulletin concerning communication interference by military warships in the Pacific Region.
IFALPA has been made aware of some airlines and military aircraft being called over 121.50 or 123.45 by military warships in the Pacific region, notably South China Sea, Philippe Sea, East of Indian Ocean. In some cases, the flights were provided vectors to avoid the airspace over the warship.
We encourage you to read the full Safety Bulletin especially if you operate in this region.
We encourage you to file an Air Safety Report with your operator if you encounter such communication interference.
