Format

INSTRUMENT NAVIGATION

INSTRUMENT APPROACH PLATES

Each instrument approach plate consists of four sections: planview, profile view, landing

minimum section (and notes), and airport sketch. Refer to Figures 2 and 3, the VOR RWY 19

approach at NAS Pensacola and the VOR-A or TACAN at Dothan.

FORMAT

1. Margin Identification - The approach name is derived from the type facility providing

final approach course guidance. The runway number is included when the final approach course

is within 30 of runway centerline (ex: VOR RWY 19) or a sequential letter code is included

when the final approach course is more than 30 from the runway centerline (ex: VOR-A or

TACAN).

a. VOR/DME in the margin means that both VOR and DME receivers and ground

equipment are required to execute the approach. The procedure is not authorized when either

VOR or DME is inoperative. TACAN azimuth is to authorized for course guidance.

b. VOR/DME or TACAN in the margin means the procedure may be executed using

VOR or TACAN azimuth for course guidance and DME is required.

c. VOR OR TACAN in the margin means a VOR instrument approach using a

VORTAC facility has been approved for use by TACAN equipped aircraft. In Figure 3 the

procedure turn could be executed using either VOR or TACAN azimuth to position the aircraft

on final approach or if DME equipped, an arcing maneuver could be used with VOR or TACAN

azimuth on final approach.

2. Planview - This is a bird's eye view of the approach procedure, including procedure turn

or another specified initial approach segment, minimum safe altitudes, courses for the final

approach segment, obstructions, and navigation and communication frequencies. Data shown

within the distance circle (normally 10 NM) is always shown to scale. Dashed circles are used to

indicate needed information for the procedure which will not fit to scale within the plan view and

include Enroute Facilities (low altitude airways navaids, fixes, and intersections shown in their

relative position around the approach facility) and Feeder Facilities (navaids, fixes, and

intersections used by ATC to direct aircraft to intervening fixes between the enroute structure

and the initial approach fix, Figure 3).

"ASR" or "PAR" listed below the communications information indicates that radar

approaches and radar vectors to final approach course are available. The term "Radar Vectoring"

means that vectors to final approach course are available, but radar approaches are not.

3. Profile View - shows a side view of approach procedures (Figure 4). The profile

contains:

a. Initial approach fix altitude (not specified for all approaches).

b. Procedure turn altitude.

c. Final Approach Fix altitude.

INSTRUMENT DEPARTURES AND APPROACHES

7-5