31. The fuselage mounted airbrakes proved rather ineffective. 32. The Favorit has a airbrakes mounted further aft than usual, at 70 % chord. 33. In some models the surfaces are not aligned to the direction of flow acting as airbrakes . 34. Until Zefir 4 they had no airbrakes ( spoilers ) which had caused multiple landing incidents. 35. There were neither flaps nor airbrakes . 36. The airbrake system aboard the rail cars had angle cocks at each end of each car. 37. The Sperber Junior, was designed as a development of the airbrakes on the inner wing. 38. There were originally four lower airbrakes but the outboard two were deleted before the aircraft entered service. 39. The bridge's " horn " is actually made up of two Westinghouse Airbrake locomotive horns. 40. It was also given a reshaped, two piece canopy, improved airbrakes and a tail parachute.