United Kingdom Civil Aviation Authority

Air Traffic Control Surveillance Minimum Altitude Chart - Fourth Edition
 N CAP 777

Annotation

Purpose of an SMAA

The purpose of an SMAA is:

1. To relieve controllers of the responsibility for determining the appropriate minimum safe levels in the vicinity of the aerodrome, where the sequencing and separation of arriving IFR flights to comply with the UK requirement that aircraft shall be vectored to join final approach at no less than 5 NM from touchdown.

2. To provide pilots with an indication of the minimum altitudes which ATC will allocate when vectoring an aircraft below the published Minimum Sector Altitude (MSA).

It is important to recognise that the designated SMAA may not be the only area within which vectoring may take place. When vectoring flights outside the SMAA, the controller is responsible for determining and providing the required terrain clearance as specified in CAP 493, Manual of Air Traffic Services Part 1.

It should be recognised that traffic may not be allowed to operate within certain portions of an SMAA, such as Prohibited, Restricted or notified Danger Areas. These areas shall be shown on the ATCSMAC.

SMAAs do not constitute controlled airspace nor do they attract any special airspace regulation in their own right.

Автоматический перевод:

Высотная диаграмма минимума контроля управления воздушным движением - четвертый выпуск