Tuesday, August 28, 2012

SECONDARY FLIGHT CONTROLS - ADJUSTABLE STABILIZER

Rather than using a movable tab on the trailing edge of the elevator, some airplanes have an adjustable stabilizer. With this arrangement, linkages pivot the horizontal stabilizer about its rear spar. This is accomplished by use of a jackscrew mounted on the leading edge of the stabilator.

On small airplanes, the jackscrew is cable-operated with a trim wheel or crank, and on larger airplanes, it is motor driven. The trimming effect and cockpit indications for an adjustable stabilizer are similar to those of a trim tab. Since the primary and secondary flight control systems vary extensively between aircraft, you need to be familiar with the systems in your aircraft. A good source of information is the Airplane Flight Manual (AFM) or the Pilot's Operating Handbook (POH).

AIRCRAFT SYSTEMS - OUTSIDE AIR TEMPERATURE GAUGE AND FUEL INJECTION SYSTEMS

OUTSIDE AIR TEMPERATURE GAUGE Most airplanes also are equipped with an outside air temperature (OAT) gauge calibrated in both degrees Celsi...