Aber Herr Kollege. Das haben wir doch kürzlich schon auf EuroGA besprochen ;-)

SERA.14080:

(a) During flight, aircraft shall maintain watch as required by the competent authority and shall not cease watch, except for reasons of safety, without informing the ATS unit concerned.

(1) Aircraft on long over-water flights or on flights over designated areas over which the carriage of an emergency locator transmitter (ELT) is required, shall continuously guard the VHF emergency frequency 121,5 MHz, except for those periods when aircraft carry out communications on other VHF channels or when airborne equipment limitations or cockpit duties do not permit simultaneous guarding of two channels.

(2) Aircraft shall continuously guard the VHF emergency frequency 121,5 MHz in areas or over routes where the possibility of interception of aircraft or other hazardous situations exists, and a requirement has been established by the competent authority.

AMC1 SERA.14080:

GUARD ON FREQUENCY 121,5 MHZ

Aircraft on flights other than those specified should guard the emergency frequency 121,5 MHz to the extent possible.

Hmm. Da kann ich das also grundsätzlich nicht herauslesen.

... in areas or over routes where the possibility of interception of aircraft or other hazardous situations exists

Wo genau existiert denn keine possibility of dangerous situations? ;-)

Es geht um die AMC.

Ich hab's auch immer an, aber Deine Interpretation ist nicht zutreffend. Eine Vorschrift für alle Flüge kann man nicht heraus lesen.