The C-40B is a U.S. Air Force variant of the Boeing 737-700. It has a higher max takeoff weight, more powerful engines, and more fuel tanks for extended range up to 5,000nm.
Flight dynamics have been modified based on official Boeing technical specifications and hours of testing. Many updates and improvements. Original aircraft made by Project Opensky. Please see the Readme file.
Boeing 737-700 Modification, Air Force C-40B variant
This is a freeware Boeing 737-700 with winglets that I obtained from AVSIM. The original model was developed by Project Opensky. The VC was updated by Alejandro Rojas Lucena with additional panel updates by Phillipe Marion and Ken Wiggington. The built-in FMC is from Garret Smith.
This is the Air Force C-40B variant used to transport high-ranking military officers and other VIPs. It has a higher max takeoff weight, more powerful engines, and more fuel tanks for extended range.
Aircraft engine sounds are not included. There are good freeware CFM56-7B sounds on AVSIM.
The GPWS and Groundhandling gauges were made by Rob Barendregt. The Jelair Vspeeds/Callout gauge was made by Jacob Larsen.
**The Jelair Vspeeds/Callout gauge must be opened once to activate it.**
I have made the following modifications:
1. Removed the built-in Navigation, Strobe, Landing, and Taxi lights from the model and added new lights in the cfg file using stock effects.
2. Modified the empty and max weight as well as the passenger and cargo loads. There is a communication section, VIP quarters, and a small passenger section.
3. Changed the moments of inertia for more realistic feel and handling.
4. Adjusted the reference datum position, station loads positions, engine positions, fuel tank positions, and contact points.
5. Corrected airplane geometry values.
6. Set engine thrust to correct value for CFM56-7B24, added additional fuel flow gain entries for a longer and more realistic engine start sequence, adjusted fuel flow scalar for accurate fuel consumption, set engine inlet area to correct value, and changed min throttle limit for more realistic reverser thrust.
7. Modified the fuel tank values to reflect the fuel quantity for the 737-700 with standard 3 tanks. Enabled electric fuel pumps which can be turned on/off on the overhead panel.
8. Updated flap and slat values to reflect 737-700 actual settings and adjusted scalars for realistic performance.
9. Adjusted some flight tuning scalar values for more realistic handling.
10. Changed toe brake scale for more realistic braking effect.
11. Adjusted some autopilot values.
12. Enabled electric hydraulic pump and enabled wing deicing.
13. Enabled the gear warning system and adjusted settings.
14. Removed the wing folding, tailhook, and smokesystem sections. Added the contrail effect to the effects section.
15. Added some VC views and adjusted some view positions and zoom levels.
16. Added the GPWS, Groundhandling, and Jelair Vspeed gauges to the panel.
17. Removed windshield rain effect from Boeing interior model.
18. Moved the VC forward and higher to its correct position and adjusted eyepoint view.
19. Corrected the exits section of the cfg file.
20. Adjusted the EGT max temp and scalar in the AIR file to display the CFM56-7B engine EGT more accurately.
21. Adjusted the Total Drag and landing gear drag in the AIR file for more realistic climb and cruise behavior.
22. Modified the EICAS gauge code to redline the EGT at the correct temperature and to redline engine N1 and N2 at the correct RPM.
23. Modified the Annunciator Master gauge code to only activate the Icing warning if the temperature is below 5C *and* it is raining, snowing, or the plane is in clouds, and adjusted the EGT temperature level that triggers the master caution light.
24. Updated the panel to replace the radio popup panel with the stock 737-400 gauge, replace the VC overhead panel with the Ken Wiggington panel which has indicator lights and power readings, use a different 737 gauge for the radio stack as the original radio comms didn't work, and replace the Ken Wiggington Annunciator gauge with the one from Phillippe Marion.
25. Modified the panel.cfg to use a different 737 gauge for the radio stack as the original radio comms didn't work.
The modifications were made based on official aircraft specifications contained in Boeing documents. The aircraft was tested using P3Dv6, but should work fine in P3Dv4-6 and possibly even earlier versions and FSX.
David Midgett
January 2025