APR E6-B4T Pocket Size Flight Computer

The Pocket Universal E6-B4T Wind Triangle and Time/Speed/Distance Computer calculates flight planning and essential en route navigation requirements. The unit has write-in TC to CH boxes. The low speed wind slide shows speeds of 40 to 270 knots or miles.

Learning is faster and easier with instructions to solve for ground speed, WCA, and headings printed at the top of the slide.

APR’s Airlearn System Flight Planning Wind Triangle Information Slide shows formulae for true course to compass headings as well as illustrated examples of east/west magnetic variation.

Also displayed are definitions relevant to wind triangle problems and diagrams of true heading and true course solutions.

The headwind and crosswind component grid depicts the relative wind angle in a two-tone graphic for accurate and easy interpretation. Nautical and statute rulers for Sectional and WAC Charts are on the sides of the slide.

Includes custom case, lifetime anodized aluminum.

Dimension: 3 1/4" x 6 3/8".  Also available in a full size (4 7/8" x 9 5/8") flight computer as the E6-B2D.

Features

• Complete Instruction Manual includes BONUS Section on Dead Reckoning and Wind Effect Theory Calculations.
• Miles and Gallons Scale (Distance)
• Off-course & Drift Corrections
• Minutes & Hours Scale (Time)
• Mach Number Index Window
• Slide-Rule Mathematics
• Wind Component Grid
• Microset Alignment
• Beveled T/S/D Dial
• Altitude Correction
• Fuel Consumption
• Density Altitude Factors

Conversions

• Minutes to Seconds
• True Airspeed
• True Altitude
• Temperature
• Kilometers
• Statute to Nautical to Statute Miles

APR makes a number of different E6-B flight computers and the differences are sometimes hard to figure out.  The following chart will help you find the right APR E6-B flight computer for your needs by showing the major differences:

 Major differences of APR E6-B flight computers

Model	E6-B2WHL	E6-B2D	E6-B4WHL	E6-B4T	E6-B8D	E6-B8DP
Size	4 7/8" x 9 5/8"	4 7/8" x 9 5/8"	3 1/4" x 6 3/8"	3 1/4" x 6 3/8"	4.5" x 8.75"	4.5" x 8.75"
Material	Steel	Steel	Steel	Steel	Plastic	Plastic
Slide Lock	Yes	Yes
Micro Set	Yes	Yes	Yes	Yes
Hanging Ring	Yes	Yes	Yes	Yes
Windspeed Cursor Arm	Yes		Yes		Yes	Yes
Low (40 to 270) Speed	Yes	Yes	Yes	Yes	Yes	Yes
High (100 to 820) Speed	Yes		Yes
Compressibility Correction Scale	Yes		Yes