Chapter Five In-Flight Fuel and Analysis

INSTRUMENTS FLIGHT PLANNING

CHAPTER FIVE

IN-FLIGHT FUEL AND TIME ANALYSIS

500.

INTRODUCTION

During the enroute phase of flight, it is essential that you are constantly aware of how the actual

flight is progressing as compared to the preflight planning. It should be quite plain that, in-flight,

fuel figures and ETEs will change from your preflight figures for many reasons, including

change of winds, on deck delay time, enroute delays, unplanned altitude changes, route of flight

changes, weather, etc. It is imperative that you are able to compute and update fuel and time

estimates anywhere along the route of flight. Failure to update estimated fuel and time enroute

could result in an unplanned landing short of your original destination.

501.

LESSON TOPIC LEARNING OBJECTIVES

TERMINAL OBJECTIVE

Navigate an aircraft via visual references and navigation instruments with the assistance of

a flight instructor.

ENABLING OBJECTIVE

C.8. Determine mission completion feasibility based on requirements at each navigational

checkpoint, given a jet log and single enroute chart during simulator navigation trainer

mission or navigation training mission, in accordance with OPNAVINST 3710.7s.

C.8.1. Calculate EFR at destination IAF, during 2B47 navigation trainer mission + 30

pounds.

C.9. Calculate ETA at each navigational checkpoint, during 2B47 navigation trainer mission

+30 seconds.

C.9.1. Determine GS during 2B47 navigation trainer mission + 6 knots.

IN-FLIGHT FUEL AND TIME ANALYSIS

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