ATPL(A) · subject 022
Subject 022 reads as a chain: a sensor measures a physical quantity, a computer corrects it, a display presents it, and an automatic system uses it. The errors are always born at the first step.
Written on the EASA Learning Objectives, checked against the primary texts, delivered as an A4 PDF and a screen edition, in English and in French.
What is inside
Pitot and static systems, airspeed indicator, altimeter, vertical speed indicator, machmeter, temperature and the air data computer.
Earth magnetism, direct reading compass, flux valve, gyroscopic properties and the three instruments that follow from them.
Principle of inertial navigation, alignment, the Schuler period, drift and strapdown systems.
Control loop, modes, trim, yaw damper, flight envelope protection and autothrottle.
Electronic displays, communications, GPWS and TCAS, system monitoring and flight recorders.
Flight management system, on-board computers, data buses and the architecture of fly-by-wire systems.
The parts, in syllabus order
| Part 1 | Air data | 022 01 and 022 02 — Sensors, instruments and air data parameters |
| Part 2 | Compass and gyros | 022 03 and 022 04 — Magnetism, direct reading compass, flux valve, gyroscopes |
| Part 3 | Inertial systems | 022 05 — Inertial navigation and reference systems |
| Part 4 | Automatic flight | 022 06, 08 and 09 — Control loop, trim, protections, autothrottle |
| Part 5 | Displays and alerting | 022 10, 12, 13 and 14 — Displays, communications, proximity systems, recorders |
| Part 6 | FMS and digital | 022 11 and 022 15 — Flight management system, computers and data buses |
Exam traps you will meet in this subject
A sample from Appendix B. The full list is in the notes.
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