Iran CAO CPL Theory study guide
Iran CAO CPL Theory · Work through your exam, one topic at a time.
The Commercial Pilot Licence (CPL) theoretical knowledge examination is the ground-school hurdle that must be cleared before a candidate may sit the CPL skill test. In Iran it is administered through the Civil Aviation Organization (CAO) - سازمان هواپیمایی کشوری - and the syllabus follows the subject areas ICAO Annex 1 sets out for commercial pilot licensing: air law, airframes, systems and powerplants, instrumentation, mass and balance, performance, flight planning and monitoring, human performance and limitations, meteorology, navigation, operational procedures, principles of flight, and radiotelephony (فرودگاه/مخابرات هوانوردی). The Iran CAO CPL Theory study guide has 12 sections and about 3,892 words.
01Air Law
Air Law tests how ICAO standards and Iranian civil aviation regulations apply to a CPL holder: licensing, rules of the air, documents, airspace, accident reporting and pilot responsibilities. Iran’s CARs and AIP are the controlling national references; ICAO Annexes supply the baseline, and a published national difference overrides the Annex for operations in Iran.
329 words, about 2 min02Aircraft General Knowledge – Airframe
This domain tests the structure and mechanical systems that carry flight and ground loads: fuselage, wings, empennage, flight controls, landing gear, pressurisation and ice protection. The exam expects you to connect load paths, materials and inspection limits to safe operation, not just name parts.
329 words, about 2 min03Aircraft General Knowledge – Systems and Powerplant
This domain covers piston and turbine powerplants, fuel, oil, ignition, electrical, hydraulic, pneumatic and fire-protection systems. The CPL exam tests normal operation, limitations and failure management, with emphasis on the piston engine and constant-speed propeller used in typical training aircraft.
363 words, about 2 min04Aircraft General Knowledge – Instrumentation
Instrumentation tests the pitot-static system, gyroscopic instruments, magnetic compass, engine instruments and electronic displays. The CPL candidate must understand how each instrument derives its indication, its errors, and what happens when the source fails.
345 words, about 2 min05Mass and Balance
Mass and Balance tests the calculation and control of aircraft mass, centre of gravity (CG) and loading limits. The exam expects precise use of datum, arm, moment and the difference between mass and weight, plus an understanding of how loading affects performance and stability.
337 words, about 2 min06Performance
Performance tests take-off, landing, climb, cruise and obstacle clearance under given mass, altitude, temperature, wind and runway conditions. The CPL exam emphasises density altitude, chart use, V-speeds and the difference between pressure altitude and true altitude.
315 words, about 2 min07Flight Planning and Monitoring
Flight planning tests the preparation and in-flight monitoring of a safe flight: route, weather, fuel, mass, alternate, ATC flight plan and contingency. The CPL candidate must produce a plan that is legal, fuel-safe and adaptable when conditions change.
317 words, about 2 min08Human Performance and Limitations
Human Performance tests the pilot as a system: hypoxia, hyperventilation, spatial disorientation, fatigue, stress, vision, hearing, information processing and crew resource management. The exam expects practical recognition and countermeasures, not medical theory.
295 words, about 1 min09Meteorology
Meteorology tests the atmosphere, pressure, wind, clouds, precipitation, icing, thunderstorms, visibility and METAR/TAF interpretation. For Iran, the exam also expects awareness of hot summer thermal lows, dust, mountain waves over the Zagros and rapid weather changes near frontal systems.
310 words, about 2 min10Navigation
Navigation tests dead reckoning, wind triangle, charts, magnetic variation, radio navigation and GNSS. The CPL candidate must plan a route and monitor position, fuel and time without relying on a single source.
302 words, about 2 min11Operational Procedures
Operational Procedures tests normal and emergency operations: checklists, SOPs, take-off and landing, fuel management, diversion, communications, icing, fire, depressurisation and security. The exam expects disciplined use of procedures and sound decision-making under pressure.
325 words, about 2 min12Principles of Flight
Principles of Flight tests lift, drag, thrust, weight, stability, control, stall, spin and high-speed effects. The CPL exam expects the candidate to explain why an aircraft behaves as it does and to predict the effect of changes in speed, mass, configuration and CG.
325 words, about 2 min