299 Environments
The following table lists the many environments available for Environment, 299, which is shown in an assembly’s Calculation Data pane when a 299B or 299C model is selected. For more information, see Calculation Data for 299 Models. Additionally, these models support custom environments.
Airborne
Ground
Naval
Other
AIC, AC - Airborne, Inhabit Cargo, Commercial
AIF - Airborne, Inhabit Fighter
ARW - Airborne, Rotary, Winged
* 
Only the 299C model supports the following environments: ARS - Airborne, Rotary, Winged and MF - Missile Flight. If you select one of these environments for a 299B model, the Pi E value is 0. In most cases, a Pi E value of 0 results in a failure rate of 0.
AUC - Airborne, Uninhab Cargo
AUF - Airborne, Uninhab Fighter
GB, GC - Ground, Benign, Controlled
GF, CU - Ground, Fixed, Uncontrolled
GF1 - Ground Fixed, Controlled
GM - Ground Mobile
GM2 - Mobile Acutely
GMS - Ground Missile Silo
NS - Naval Sheltered
NS2 - Naval Sheltered, Common
NSB - Naval Submarine
NU - Naval Unsheltered
MF - Missile Flight*
ML - Missile Launch
MP - Mobile Shoulder
SF, SC - Space Flight, Commercial