An aircraft is approaching aerodrome Alicante (LEAL) following the 243° radial onto the ALT VOR/DME and receives clearance for the VOR Y Rwy 28 procedure. What is the Minimum Safe (Sector) Altitude (MSA)?
Refer to figures.
The Minimum Safe (Sector) Altitude (MSA) is printed on the instrument approach charts. It identifies the minimum altitude that provides a 1 000 ft vertical clearance above obstacles within 25 NM of the navigational facility. It may be given as one value or could be divided into sectors, each sector having a different value.
The MSA is for emergency use only and on the approach charts, it is depicted at the top right corner.
For this approach chart, the MSA is with reference to the ALT VOR/DME. Between the inbound magnetic bearings 060º and 175º, or between Radial 240º and Radial 355º correspondingly, the MSA is 5 900 ft within 25 NM.
Since the aircraft is approaching from Radial 243° (between R240º and R355º) , then the MSA is 5 900 ft.
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