Final answer:
In aviation, a NOTAM servicing delay is sent to inform pilots of potential delays or hazards. The NOTAMs should specify the reason for the delay and the expected duration.
Step-by-step explanation:
In aviation, a NOTAM (Notice to Airmen) is a notice issued by an aviation authority to alert pilots of potential hazards along a flight route or at a specific airport. If a NOTAM servicing delay is sent, it should specify the reason for the delay and the expected duration of the delay.
For example, if there is maintenance being carried out on a runway at an airport, a NOTAM servicing delay might be issued to inform pilots that the runway will be temporarily closed for a specific period of time.
Therefore, when a NOTAM servicing delay is sent, NOTAMs should specify the reason for the delay and the expected duration of the delay.