CAA NZ CPL Aircraft Technical Knowledge case studies
CAA NZ CPL Aircraft Technical Knowledge · Put your knowledge to work in context.
Aircraft Technical Knowledge (ATK) is one of the theory examinations you must pass before a Commercial Pilot Licence (Aeroplane or Helicopter) can be issued under Part 61 of the New Zealand Civil Aviation Rules. It is aimed at pilots who already hold, or are close to completing, a PPL and are moving into commercial operations, where understanding why a system fails matters as much as knowing that it exists. The CAA NZ CPL Aircraft Technical Knowledge case studies are 5 cases and about 2,487 words.
1Go-Around at Low Airspeed with Full Flap
A low-wing single-engine aeroplane (MTOW 1,150 kg, wing area 16.2 m²) is on short final at 300 ft AGL, 65 KIAS, full flap (40°), mass 1,050 kg. VSO at MTOW is 52 KIAS.
535 words, about 3 min2Spar Carry-Through Corrosion and Elongated Rivet Holes
During an annual inspection of a 1978 low-wing trainer with 6,200 h total time, the engineer finds white powder and pitting on the wing-spar carry-through structure beneath the cabin floor. Twelve rivets in the lower wing skin aft of the rear spar are loose; one rivet hole is elongated about 0.8 mm and the skin around it is distorted.
522 words, about 3 min3High CHT and Magneto Differential on a Constant-Speed Single
A four-cylinder horizontally opposed engine (O-360 type, 2,000 h since overhaul, 400 h since top overhaul) in a constant-speed single is cruising at 2,400 rpm and 24 inHg. #3 CHT is 425°F, oil temperature 205°F, oil pressure 55 psi, and oil consumption is 1 qt per 5 h.
488 words, about 2 min4Alternator Failure in Icing with a Finite Battery
Night IFR in a single-engine aeroplane, 28 V system with a 70 A alternator and a 24 Ah battery. The alternator fails; the ammeter shows discharge and the low-voltage light is on.
499 words, about 2 min5Aft CG and Marginal Grass-Runway Takeoff
An aeroplane has MTOW 1,150 kg, empty mass 700 kg, empty CG 0.78 m aft of datum, CG limits 0.75–1.05 m aft of datum. Arms: pilot and front passenger 0.85 m, rear passengers 1.75 m, baggage 2.20 m, fuel 1.00 m.
443 words, about 2 min