Brunei DCA CPL(A) Instrumentation study guide
Brunei DCA CPL(A) Instrumentation · Work through your exam, one topic at a time.
The Brunei DCA Commercial Pilot Licence (Aeroplane) Instrumentation examination is one of the technical knowledge papers a candidate must pass before holding a CPL(A) issued by the Department of Civil Aviation, Brunei Darussalam. It tests whether a future commercial pilot understands how aircraft instruments and systems actually work - not merely how to read them - so that abnormal indications can be recognised and reasoned about in flight. The Brunei DCA CPL(A) Instrumentation study guide has 9 sections and about 3,177 words.
01Fundamentals of Flight Instruments: Pressure, Gyroscopes and Errors
The pitot-static instruments depend on two pressures: total (impact) pressure at the pitot head and static pressure at the static ports. The airspeed indicator compares the two, the altimeter and vertical speed indicator (VSI) use static pressure alone.
396 words, about 2 min02Pitot-Static System: Construction, Operation and Errors
The pitot head faces the airflow and supplies total pressure; drain holes and a heater protect it from moisture and icing. Static ports are flush-mounted on the fuselage, usually in undisturbed pressure regions, and are connected to the ASI, altimeter and VSI.
389 words, about 2 min03Gyroscopic Instruments: Attitude, Heading and Turn
A vertical gyro with two degrees of freedom (horizontal spin axis and vertical gimbal) drives a horizon bar display. It uses an erection mechanism (pendulous vanes or torque motors) that slowly aligns the gyro with the true vertical.
360 words, about 2 min04Magnetic Compass: Construction, Turning and Acceleration Errors
The direct-reading magnetic compass consists of magnetised needles attached to a float and compass card, pivoted in a bowl filled with damping fluid. It aligns with the horizontal component of the Earth's magnetic field.
344 words, about 2 min05Engine and System Indication Instruments
The tachometer measures engine or propeller RPM, typically via a mechanical drive or an electrical/electronic sender. The manifold pressure gauge measures absolute pressure in the induction system (inches of mercury or hPa) and is a direct indicator of power for a fixed-pitch or constant-speed piston engine.
369 words, about 2 min06Instrument Displays and Integration: EFIS, EICAS/ECAM and Standby Instruments
An electronic flight instrument system replaces mechanical attitude, heading, airspeed and altitude displays with CRT or LCD screens. Typical layout: a primary flight display (PFD) in front of each pilot, showing attitude, flight director, airspeed, altitude, vertical speed, heading and navigation data; a navigation display (ND) showing route, weather and traffic.
318 words, about 2 min07Warning, Caution and Alerting Systems
A stall warning system uses a lift transducer or angle-of-attack vane to trigger a horn, light or stick shaker before the stall. It must be tested before flight.
337 words, about 2 min08Automatic Flight Control and Flight Director Systems
The autopilot (AP) and flight director (FD) work together. The FD computes a command bar display; the AP follows the same commands through servos.
339 words, about 2 min09Instrument System Failure Recognition and Pilot Response
Failures present as abnormal indications , flagged or blank displays , disagreement between instruments , or aural/visual warnings . The core technique is cross-checking independent sources: standby instruments, the other pilot's displays, GPS, and outside visual references.
325 words, about 2 min