The U.S. Federal Aviation Administration released an information bulletin last week that warns users of SPOT satellite messengers that their devices can interfere with GPS signals. Citing reports from aircraft operators, the FAA says that when a SPOT messenger is placed in close proximity to a GPS antenna, such as on an aircraft’s glareshield, GPS signal interference can occur.

The FAA classifies SPOT messengers as PEDs, or Portable Electronic Devices. Under the FAA’s rules, the safe operation of PEDs on board aircraft is the responsibility of aircraft operators and pilots in command.

The bulletin states that SPOT’s manufacturer SPOT LLC is cooperating with the FAA in order to provide SPOT users with information that will lead to the safe operation of their devices.

See below for the full text of the bulletin.