DGCA ATPL Air Navigation case studies
DGCA ATPL Air Navigation · Put your knowledge to work in context.
The Air Navigation paper is one of the technical knowledge examinations that a candidate must pass to hold an Airline Transport Pilot Licence (ATPL) issued by the Directorate General of Civil Aviation, India. It is aimed at pilots progressing from the Commercial Pilot Licence towards the ATPL, and at holders building the theoretical knowledge required before the licence is issued. The DGCA ATPL Air Navigation case studies are 5 cases and about 1,816 words.
1Island VOR/DME Fix and Drift Correction
You are navigating a twin turboprop at FL180 in still-air cruise TAS 260 kt, heading 085°M with magnetic variation 6°W. The OBS is set on a distant VOR (radial 270) and the CDI shows full-scale fly-right deflection; the TO/FROM flag reads FROM.
408 words, about 2 min2ILS Approach with Altimeter and Wind Shear Concerns
You are flying a Category C aircraft on an ILS to runway 27. QNH at the aerodrome is 1002 hPa, elevation 200 ft.
372 words, about 2 min3Mass and Balance and Take-off Performance at a Hot, High Aerodrome
A light twin is scheduled from a 1,400 m asphalt runway at elevation 4,500 ft, OAT +30 °C, QNH 1005 hPa, slope 1% uphill, wind 180°/10 kt, runway 18. The AFM gives a sea-level ISA take-off distance of 850 m, with a 12% increase per 1,000 ft of pressure altitude, 1% per 1 °C above ISA, and a 10% increase for a 1% uphill slope.
342 words, about 2 min4GNSS Integrity and Dead Reckoning Fallback
You are on an oceanic leg at FL350, 400 NM from the nearest land, using GPS as the primary navigation source. The GPS receiver shows RAIM unavailable for the next 20 minutes due to satellite geometry, and the FMS has reverted to dead reckoning using the last known wind.
386 words, about 2 min5Cruise Flight Planning with Upper Winds and Fuel Reserve
You are planning a 900 NM leg at FL300. Forecast wind at FL300 is 250°/80 kt, temperature −45 °C.
308 words, about 2 min