NCAA CPL Aircraft General Knowledge case studies
NCAA CPL Aircraft General Knowledge · Put your knowledge to work in context.
The NCAA Commercial Pilot Licence (CPL) Aircraft General Knowledge knowledge test is one of the theoretical examinations required by the Nigeria Civil Aviation Authority for the issue of a Commercial Pilot Licence. It is intended for student pilots who have completed the required ground training and are ready to demonstrate the aeronautical knowledge needed to operate as a commercial pilot. The NCAA CPL Aircraft General Knowledge case studies are 5 cases and about 3,135 words.
1Cabin Altitude Excursion at FL250: Masks, Descent or Diagnosis?
You are PIC of a twin-engine turboprop cruising at FL250 with nine passengers and one cabin crew. The pressurization controller is in AUTO and the cabin has been stable at 7,500 ft with a differential of 5.4 psi.
697 words, about 3 min2Alternator Failure at Night in IMC: Battery Endurance and Load Shedding
You are flying a twin piston aeroplane at night in IMC at FL120, OAT -4 °C, on a three-hour charter. The electrical system is 28 V DC with two 70 A engine-driven alternators, separate regulators, a 24 V 34 Ah battery and a split bus with a bus tie.
640 words, about 3 min3Fuel-Flow Indication Failure and an Out-of-Balance Tank at Night
You are PIC of a twin piston aeroplane with two wing tanks, 136 US gal usable, on a night IFR flight of 3 h 10 min with a 45 min final reserve. You depart with 100 US gal and plan 22 US gal/h total at 65% power.
634 words, about 3 min4Hydraulic Leak on Approach with a Gear Unsafe Indication
You are on approach at 1,200 ft AGL in a retractable-gear light twin (MTOW 5,200 lb) with a 1,500 psi hydraulic system: an engine-driven pump on the left engine, an electric auxiliary pump used for gear and flap selection, and a reservoir visible through a sight glass. Selecting gear DOWN gives three greens, then the right main green goes out and the red gear-unsafe light and horn come on with the throttles retarded.
602 words, about 3 min5Wastegate Failure and Overboost in the Climb
You are climbing a turbocharged twin (TSIO-520, 285 hp per side) through FL170 towards FL210 at 32 in Hg and 2,400 rpm, which is 75% power; CHT is 420 °F, EGT 1,540 °F, oil temperature 205 °F, OAT -14 °C. Passing FL180, without any throttle movement, the right manifold pressure rises to 38 in Hg and keeps creeping up; the right CHT climbs to 465 °F in two minutes while the EGT begins to oscillate ±60 °F.
562 words, about 3 min