This document is “022 Instrumentation,” Book 5 in the JAA (Joint Aviation Authorities) Airline Transport Pilot’s Licence Theoretical Knowledge Manual series, published by Oxford Aviation Training with Jeppesen and approved as JAA compliant by the UK Civil Aviation Authority. It corresponds to Aircraft General Knowledge 4 in the wider ATPL syllabus and follows the series’ standard format of numbered chapters with figures, worked examples, and end of chapter revision questions.
The manual is organised into four broad sections. The first covers core flight instruments, including the pressure altimeter and its accuracy limitations, moving through gyroscopic instruments such as the artificial horizon, both air driven and electric versions, and terrestrial magnetism and compass theory, culminating in remote indicating compass systems like the slaved gyro compass and its synchronisation logic. This section concludes with objective revision questions testing servo altimeters, vertical speed indicators, and gyroscopic precession.
The second section addresses warning and recording equipment, covering aerodynamic warnings such as overspeed indications tied to maximum operating speed and high speed buffet limits, along with airborne collision avoidance systems (ACAS/TCAS), including standard radiotelephony phraseology for resolution advisories.
The third section covers automatic flight, detailing autopilot mode annunciations on modern flight decks such as the Boeing 737, sensor inputs to the autoflight computer including manometric and air data sensing, and yaw dampers, explaining why multiple redundant yaw damper systems are fitted and how phase advance signal processing counters Dutch roll.
The final section addresses power plant and systems monitoring instruments, focusing on engine instrumentation such as electronic torquemeters used to measure propeller shaft torque. Together, these sections give ATPL candidates a comprehensive grounding in aircraft instrument theory and cockpit display systems.
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