PCAA Navigation case studies
PCAA Navigation · Put your knowledge to work in context.
The PCAA Navigation exam is the knowledge assessment used within Pakistan's civil aviation licensing and competency system for personnel working in air navigation services and related flight operations roles. It is aimed at candidates preparing for careers or progression as air traffic controllers, flight operations officers, navigation systems specialists and others whose duties depend on a sound grasp of navigation theory and its regulatory setting. The PCAA Navigation case studies are 5 cases and about 3,507 words.
1Wet-lease crew duty and MEL across three States
A charter operator holding an AOC in State A has wet-leased a twin-jet registered in State B for a four-sector night cargo rotation beginning and ending in State C. One thrust reverser is deferred under the State B MEL (Category C, 10 days); the MEL permits dispatch provided landing performance is assessed without reverse thrust.
703 words, about 4 min2Tankering fuel into a weight-limited mountain departure
A twin turboprop cargo flight is planned from mountain airport A (elevation 6,200 ft, runway 1,500 m, 1.5% upslope, OAT 24°C, QNH 1008) to B, then B to C. The operator's figures are: BOW 4,500 kg, MTOW 7,600 kg, MLW 7,300 kg, MZFW 6,400 kg.
694 words, about 3 min3False glideslope capture on a high, close ILS intercept
An aircraft is cleared for the ILS runway 27 at a coastal airport (aerodrome elevation 500 ft, glide path 3.0°, DME at the threshold). The crew is high and close: at 6 DME they are cleared to 4,000 ft and told to intercept the localizer.
700 words, about 4 min4An expedited descent below minimum safe altitude
At night in IMC, a turboprop is being radar-vectored to an airport in mountainous terrain. The sector minimum safe altitude is 7,300 ft.
725 words, about 4 min5Thunderstorm at destination and an alternate below minima
An evening IFR flight is planned from A to B, ETA 1740Z. B has one runway and an ILS to 200 ft.
685 words, about 3 min