Of course, rudder admits there are more pieces to the puzzle.
The rudder was fixed at an angle indicating that the airplane was making a sharp turn to the right.
The angle of the rudder recovered from Flight 447 seems too acute to have been safely used at 550 miles per hour.
Old English roðor "paddle, oar," from Proto-Germanic *rothru- (cf. Old Frisian roðer, Middle Low German roder, Middle Dutch roeder, Dutch roer, Old High German ruodar, German Ruder "oar"), from *ro- "steer" (see row (v.)) + suffix -þra, used to form neutral names of tools. Meaning "broad, flat piece of wood attached to the stern of a boat and used for steering" is from c.1300. Spelling with -d- for -th- first recorded mid-15c. (cf. feather, mother, gather).