Here are some cheats and tips for the game F-15 City War.
PEVYGPIA Start with 1 life
PEVYGPIE Start with 9 lives
SZOYYLVG Infinite lives for 3-D sections
SXOIYIVG Infinite lives for top-view sections
GXEETVVS No forward movement on top-view sections
GXOEIUVN + GXVALUVS Slower left and right movement on 3-D sections