IFR PRocedural Calls

T-39 FLIGHT PREPARATION

STUDENT GUIDE

TAS

= 250 KIAS + 50 KTS (5 x 10)

= 300 KTAS

ANSWER: Lead turn by 1% of TAS or 3NM

15.

IFR PROCEDURAL CALLS

Three calls are performed at each turn point: Two-Minute Prior, Mark-On-Top, and

Wings- Level.

a. The Two-Minute Prior call is given 2 minutes from the calculated ETA for the

upcoming turn point. If the turn point is estimated at 15 + 30, a two-minute prior call

should be given at 13 + 30. The Two-Minute Prior call includes:

(1)

Outbound heading for course.

(2) Estimated time of arrival (ETA) at, and description of navigation to the next

checkpoint.

EXAMPLE: "Two Minutes prior to Montgomery; Outbound heading 310 for a course of 315,

ETA to DELBE is 23 + 45. We're doing a point to point to the Meridian 043 at 87nm."

b. The Mark-On-Top call consists of:

(1)

Left/Right XXX (clear turn)

Time (at minimum DME or needle passing the 90 benchmark

(2)

(3)

Place

(4)

Fuel on board

(5)

NAVAID (remains the same or switches to next station if on a direct leg)

EXAMPLE: "Left 310" (at lead point), "Time 15 + 30, Place Montgomery, Fuel 3800#'s,

NAVAID switching to Meridian."

c. The Wings-Level call is initiated when the aircraft is established on an outbound course

from the turn point (navigate prior to TP procedures). The Wings-Level call consists of:

(1)

Fuel +/- preflight

(2)

Fuel at the IAF

EXAMPLE: "We are 500 lbs above preflight, I estimate 2250 at the initial."

16.

GENERAL PROCEDURES

a. Ground speed checks

A manual ground speed check is required on the first leg after level off. Once

accomplished, compare with the aircraft GSP readout. If it is determined to be reliable (+/-

10 kts), the student may use the ground speed readout of the EHSI. Keep in mind, GSP

uses rate of change in DME. Consequently, the following criteria apply for GSP or manual

groundspeed checks to be valid:

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