MIL-HDBK-1797, DEPARTMENT OF DEFENSE HANDBOOK: FLYING QUALITIES OF PILOTED AIRCRAFT (19 DEC 1997) (S/S BY MIL-STD-1797A)., This standard is intended for use with fixed-wing aircraft supported primarily by aerodynamic force rather than engine thrust. It also covers the handling characteristics of aircraft under piloted control on the ground, and may be used with powered-lift aircraft in aerodynamic flight (above the conversion speed, Vcon). This standard also applies to piloted transatmospheric flight when flight depends upon aerodynamic lift and/or air breathing propulsion systems. Flying qualities of military rotorcraft are specified in MIL-H- 8501. while flying qualities in V/STOL flight are the subject of MIL-F-83300. NOTE: MIL-STD-1797A has been redesignated as a handbook, and is to be used for guidance purposes only. This document is no longer to be cited as a requirement. For administrative expediency, the only physical change from MIL-STD-1797A is this cover page. However, this document is no longer to be cited as a requirement. If cited as a requirement, contractors may disregard the requirements of this document and interpret its contents only as guidance. For further background information, see Appendix C.