Iran’s recent unveiling of what it claims is a new stealth fighter was supposed to instill fear in adversaries — but so far it’s mostly produced laughter and derision. Military aviation experts point out some of the craft’s many flaws: uneven coatings in the supposedly radar absorbent coating; terrible canopy optics, no head-up display (HUD), no weapons systems, and no actual jet engine. General aviation pilots also will note the avionics are mostly Dynon and Garmin units designed for the civilian market. (There are two small Dynon screens, one large one, a Garmin transponder and SL30 radio, an AvMap GPS, and what looks like a Bendix/King AV8OR touch-screen GPS. Of course, U.S. military pilots use commercial, off-the-shelf avionics from many of the same manufacturers. But Iran’s choice of the touch-screen GPS seems inspired. When Iranian pilots are shot down, they can still use the portable unit to walk home.