CPL AGK / Systems study materials
CPL AGK / Systems study resources

CPL AGK / Systems case studies

CPL AGK / Systems · Put your knowledge to work in context.

Aircraft General Knowledge - Systems is the technical paper of the Commercial Pilot Licence knowledge examination. It tests whether a candidate understands how an aeroplane's airframe, powerplant and supporting systems actually work, and what happens when they fail, rather than whether they can recite a component list. The CPL AGK / Systems case studies are 5 cases and about 4,328 words.

1

Hydraulic System Pressure Loss on Approach

You are the captain of a twin-engine turboprop on a 45-minute scheduled flight. While descending through 8,000 ft for an approach, the master caution illuminates and the hydraulic pressure gauge for system A indicates 1,200 psi, well below the normal 3,000 psi.

652 words, about 3 min
2

Cabin Pressure Controller Fault in Icing Conditions

You are flying a pressurised twin-engine business jet at FL350 with 6 passengers and 2 crew. The cabin altitude is indicating 8,500 ft and slowly climbing, although the selected cabin altitude is 6,500 ft.

685 words, about 3 min
3

Electrical System Malfunction During Night IMC

You are on a night IFR flight in a single-engine turboprop at 12,000 ft in IMC. The aircraft has a 28 V DC electrical system with a 200 A alternator and a 24 V lead-acid battery.

779 words, about 4 min
4

Fuel Imbalance and Transfer in a Twin Turboprop

You are flying a twin turboprop with a total fuel capacity of 1,200 US gallons, distributed in two main tanks (600 gal each) and two auxiliary tanks (150 gal each). The aircraft has a fuel transfer system that can move fuel from auxiliary to main tanks, and a crossfeed system.

1,354 words, about 7 min
5

Landing Gear Retraction Failure After Takeoff

You are the pilot of a light twin-engine piston aircraft departing from a 1,200 m runway at a sea-level airport. The outside air temperature is 30°C, and the aircraft is at maximum gross weight.

858 words, about 4 min