E6BJA E6B Flight Computer1.98

The E6BJA Flight Computer is a powerful software-based digital computer for practising performing aeronautical and flight calculations speedily and easily. Inspired by the Whiz-wheel (e.g. E6B, CR-1, CRP-1, CRP-5 etc), an ingenious and excellent teaching tool, and designed to replace handheld electronic digital flight computers (e.g. CX-3), the E6BJA software app is rich in features, powerful and efficient. It can be installed on a phone or tablet --- for convenience --- and has a number of advantages over the whiz-wheel; calculations are simpler and quicker to perform, with less margin of error, better reproducibility and is less error-prone. It has a clear and intuitive user interface.

The E6BJA calculator currently provides the following features:

E6BJA Wind, GS,TAS Visualiser and Diversions Star
Holding Pattern Visualiser/Computer
Wind triangle, True Air Speed, Ground Speed Visualiser
Wind Triangle solver
Wind Correction Angle
Descent Calculator
Fuel Calculator
Equivalent Time Point (ETP) and Point of No Return (PNR).
Weight, Arm and Moment Calculator
Pressure Altitude
Density Altitude
Cloud Base
Dew Point and Relative Humidity
ISA 1976 Atmosphere
Mach Number
True Air Speed (TAS) to Indicated Air Speed (IAS)
Indicated Air Speed (IAS) from True Air Speed (TAS)
Ground Speed (GS)
Load Factor from Bank Angle
Turns Calculator
Aviation Units Converter

Weight and Balance Calculators for the following aircraft:

Beechcraft V35 Bonanza
Beechcraft BE76 Duchess
Cessna 150M (1977) Commuter
Cessna 152 (1979/1980)
Cessna 170B
Cessna 172M (1976) Skyhawk
Cessna 172S (1998) Skyhawk
Cessna 177B Cardinal
Cessna 180 Skywagon
Cessna 185D Skywagon
Cessna 210M Centurion
Cessna 421 Golden Eagle
Diamond DA-20
Diamond DA-42
Cirrus SR22
Piper PA28-151 Warrior
Piper PA28-161 Warrior II (1977/1978)
Piper PA28-180 Archer
Piper PA28R-180 Cherokee
Piper PA32R-301 Saratoga
Piper PA-34-200 Seneca
Piper PA-44 Seminole
Piper PA46-310P Malibu
Robin HR100/210
Robin HR200/120
Socata TB9 Tampico
Socata TB200 Tobago

Version History Added Time Difference Calculator 1.98 Aug 20 Refactored Holding Pattern Computer: added inbound/outbound toggle and improved compass rose orientation and rendering, making it more intuitive. 1.97 Feb 18 Fixed typo in DMMS calculator (Vs0 should be Vs1). 1.96 Jan 27 Implemented RCAM (Runway Condition Assessment Matrix) Landing Distance Calculator 1.95 11/21/2025 Added Line of Sight Distance Calculator. 1.94 06/28/2025 Implemented Mass and Balance and Performance calculators for Cessna 172S (1998) Skyhawk, including:

Take-off Distance calculator at 2,550lb
Time, Fuel and Distance to climb
Rate of climb
Cruise Performance
Landing Distance calculator 1.93 04/30/2025 - Added ft/NM to Climb Calculator.

- Added Weight and Balance Calculators for the following:
- Cessna 170B
- Cessna 177B Cardinal
- Piper PA-151 Warrior
- Piper PA-34-200 Seneca
- Piper PA-44 Seminole 1.91 02/14/2025 - UI enhancements.
- Added ft/NM to Descent Calculator.

- Added Weight and Balance Calculators for the following:
- Cessna 421 Golden-Eagle
- Piper PA-32R-301 Saratoga II 1.90 02/08/2025 - Added Diamond DA-42 Weight and Balance Calculator
- Allowed input of some previously read-only arm values in some Weight and Balance calculators. 1.89 02/04/2025 Added Cessna 185D "Skywagon" Weight and Balance Calculator 1.88 01/29/2025 Added Cessna 180 "Skywagon" Weight and Balance Calculator 1.87 01/22/2025 Added Robin HR100/210 Weight and Balance Calculator 1.86 01/19/2025 Added Robin HR100/210 Weight and Balance Calculator 1.85 01/16/2025 Added Weight and Balance Calculators for:
- Cessna C210M Centurion
- Piper PA46-310P Malibu

Fixes:
- Fixed incorrect display of º symbol in Holding Pattern computer monograph text 1.84 01/13/2025 Added Weight and Balance Calculators for:
- Piper PA28R-180 Archer
- Socata TB9 Tampico
- Socata TB200 Tobago 1.83 01/11/2025 Add Weight and Balance Calculators for:
- Cirrus SR22
- Beechcraft BE76 Duchess
- Beechcraft V35B Bonanza
- Piper PA28-180 Cherokee 1.82 01/03/2025 - Added Piper PA28-161 Warrior II Weight and Balance Calculator
- Minor UI improvements 1.81 12/18/2024 General stability enhancements and improvements to calculator monographs. 1.80 10/06/2024 Added DMMS (Defined Minimum Manoeuvring Speed) calculator recommended by pilot safety advocates such as Dan Gryder and based on AQP (Advanced Qualification Programme). The purpose is to add a safety margin on Vs0 for low-level manoeuvring, i.e. within the traffic circuit/pattern. 1.79 10/01/2024 Created the new Aircraft Performance Computer facility, that lists aircraft for which tailored performance calculators are provided for flight phases such as:

- Weight and Balance
- Take-off Distance
- Rate of Climb
- Time, Fuel, Distance to climb
- Cruise Performance
- Landing Distance

Currently provided are the Cessna 150M "Commuter", Cessna 152 and Cessna 172M "Skyhawk". 1.78 09/29/2024 - Added the following Cessna 152 Performance calculators:
- Weight and Balance
- Take-off Distance
- Rate of Climb
- Time, Fuel, Distance to climb
- Cruise Performance
- Landing Distance 1.77 09/26/2024 - Implemented Advanced Fuel Plan Calculator 1.76 09/22/2024 Added Propeller RPM and Efficiency Calculator 1.75 09/13/2024 Added Time Addition/Subtraction Calculator 1.74 08/11/2024 Added Carburettor Icing Risk Approximator 1.73 08/05/2024