plain flap

split flap / split-flap

flap slat CTL lever / flap and slat control lever

trailing edge flap (T.E. flap)

flood plain

plain

plain clothes

plain coordinates

plain text

artillery fire table for plain and mountainous areas

plain bearing

dive flap

flap

flap damping

flap plate (of gun shield)

air flap

brake flap

cooling flap

cowl flap

differentially operated flap

double-slotted flap

engine cowl flap

extended flap

extension flap

flap extension

flap carriage

flap deflector

flap tab

flap track

flap track fairing

full-span flap

inboard flap

landing flap