BlueFlash · DGCA CPL prep
DGCA Technical General — Complete Syllabus & Preparation Guide 2026
Technical General is the broadest subject in the DGCA CPL syllabus and, for many students, the most intimidating. It spans aerodynamics, aircraft structures, engines, fuel systems, hydraulics, electrics, and instruments — essentially, everything about how an aircraft is built and how it flies. BlueFlash makes Technical General approachable by explaining every concept with diagrams and connecting theory directly to how it shows up in the cockpit.
DGCA Technical General Syllabus
Principles of Flight (Aerodynamics)
- Lift, drag, thrust, weight — four forces, equilibrium
- Aerofoil terminology — chord, camber, angle of attack
- Lift equation — CL, density, velocity, area
- Drag types — parasite (form, skin friction, interference) and induced
- Stall — critical angle of attack, symptoms, recovery
- Stability — static and dynamic, longitudinal, lateral, directional
- Control surfaces — aileron, elevator, rudder, trim tabs
- High-lift devices — flaps (plain, split, slotted, Fowler), slots, slats
- Propeller — thrust, torque, P-factor, gyroscopic precession
- V-speeds — Vs, Vs0, Va, Vfe, Vno, Vne and their significance
Aircraft Structures
- Fuselage types — truss, monocoque, semi-monocoque
- Wing types — cantilever, braced
- Loads — limit load, ultimate load, load factor
- Metals and composites used in aircraft construction
- Pressurisation — differential pressure, cabin altitude, outflow valve
Piston Engines
- Four-stroke cycle — induction, compression, power, exhaust
- Engine components — crankshaft, camshaft, pistons, valves
- Carburetion — float carburettor, carburettor icing, heat application
- Fuel injection systems
- Ignition — magnetos, timing, plug firing order
- Engine instruments — oil pressure, oil temperature, CHT, EGT
- Supercharging and turbocharging
Aircraft Systems
- Fuel systems — types, venting, sumping, unusable fuel
- Hydraulic systems — principle, components, failure modes
- Pneumatic systems — uses in aircraft
- Electrical systems — DC, AC, batteries, alternator, bus bar
- Ice protection — de-icing vs anti-icing, pneumatic boots, thermal
- Fire detection and suppression
- Oxygen systems — diluter demand, pressure demand
Flight Instruments
- Pitot-static system — instruments connected, failure effects
- Altimeter — operation, errors, blocked static
- Airspeed indicator — errors, V-speeds
- VSI — trend instrument, lag
- Gyroscopic instruments — rigidity and precession
- DI — errors, alignment
- Artificial horizon — errors, limits
- Turn coordinator vs turn and slip indicator
How BlueFlash Teaches Technical General
Technical General has the most visual content of any DGCA subject. BlueFlash generates diagrams on demand — the four-stroke cycle, the pitot-static system, control surface deflections, carburettor icing mechanisms, fuel system schematics. Ask "show me how a float carburettor works" and you get a labelled diagram with an explanation.
Exam mode covers all chapters with MCQs calibrated to DGCA difficulty — scenario-based questions like "oil pressure drops suddenly in cruise — what is the most likely cause and immediate action?" test understanding, not memory.