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Flight Training Instruction - Cnatra - U.S. Navy

Flight Training Instruction - Cnatra - U.S. Navy

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CHAPTER EIGHT T-6B PRIMARY INSTRUMENT NAVIGATION<br />

811. LANDING MINIMA SECTION<br />

Standard Landing Minimums: Located below the profile view, the minima section contains<br />

the following (Figure 8-6a):<br />

1. Aircraft Approach Category.<br />

2. Minimum Descent Altitude (MDA); expressed as an MSL altitude. Descent below this<br />

altitude is unauthorized until the runway environment is in sight and the aircraft is in a position<br />

to maneuver safely to land.<br />

3. Visibility required for the approach in statute miles. Runway visual range (RVR) in<br />

hundreds of feet may be used in place of visibility for Straight–in approaches only.<br />

4. Height Above Touchdown (HAT); height of MDA (or DH) above highest elevation in<br />

touchdown zone (used with straight–in minimums).<br />

5. Ceiling and visibility; used for filing purposes and commencing an approach.<br />

6. Height Above Airport (HAA); height of MDA above published airport elevation (used for<br />

circling minimums).<br />

7. PAR or ASR minimums; if applicable.<br />

8-8 TERMINAL PROCEDURES<br />

NOTES<br />

1. In the landing minima section, large type altitudes are MSL<br />

and small type are AGL.<br />

2. HAT is associated with Straight-in approaches. HAA is<br />

associated with Circling approaches. MDA is associated with<br />

Non-precision (no glideslope) approaches.<br />

Figure 8-6a Landing Minima<br />

RNAV Landing Minimums: RNAV instrument approach procedure charts now incorporate all<br />

types of approaches using Area Navigation systems, both ground based and satellite based.<br />

The standard format for RNAV minima (and landing minima) is as shown in Figure 8-6b.

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