E6b Flight Computer Exercises Access

The Scenario: You plan to fly 245 NM at 115 knots True Airspeed (TAS). You burn 8.5 GPH. How much fuel will you need, and how long will it take?

The Exercise (Using the outer & inner scales):

Pro Tip: Always add a 30-minute VFR reserve to your final number.

Scenario: You are flying HDG 315° at 110 knots TAS. You look down and see your ground track (Course Made Good) is 320°. Your groundspeed (from GPS or VOR timing) is 125 knots. e6b flight computer exercises

  • Answer: Wind = Approximately 275° at 22 knots.

    • The most basic, yet most frequent, calculation on any cross-country flight is the relationship between Speed, Time, and Distance (the “Big Three”). The E6B’s outer scale (distance) and inner scale (time) are designed for this.

    Goal: Calculate total fuel needed for a leg.

    Given: Fuel burn = 9.5 GPH. Time en route = 2h 30m. Find: Total fuel. Method: Align 9.5 (outer) with the index (60). Find 150 minutes (2:30) on inner. Read outer = 23.75 gallons. The Scenario: You plan to fly 245 NM

    Drill Set: 4. Burn 12.2 GPH, Time 1h 45m → Gallons? 5. Burn 8.7 GPH, Distance 260 NM, GS 104 kts → Total fuel? (Hint: Find time first, then fuel)

    Formula:

    | Exercise | Given | Required | Answer |
    |----------|-------|----------|--------|
    | 4 | Burn 9.5 GPH, fly 3.5 hr | Fuel used | 33.25 gal |
    | 5 | 42 gal usable, 11.2 GPH | Endurance (hr:min) | 3:45 hr |
    | 6 | Trip 210 NM @ 115 kts, fuel 8.7 GPH, reserve 45 min | Total fuel needed | 17.8 gal (trip 15.9 + reserve 1.9) | Pro Tip: Always add a 30-minute VFR reserve

    Exercise 6 checks distance-to-time-to-fuel integration.

  • Answer: HDG = 081° (090 – 9) | GS = 109 knots.

    • Scenario: You are cruising at 9,500 feet at 130 knots TAS. Your engine sputters. You locate an airport 27 NM away on your map. You have a 15-knot tailwind.

    Course: Private Pilot Ground School Topic: Flight Computer Operations Time Allotted: 45 Minutes