Chandragadhi Airport (VNCG) gets new approach procedures; RNAV GNSS for safety enhancement

Chandragadhi Airport also known as Bhadrapur Airport, one of the busiest domestic airports at the Eastern part of the country has got the newly established approach procedure to enhance the safe flight operation at the airport.

According to the Civil Aviation Authority of Nepal (CAAN), the RNAV (Area Navigation) GNSS (Global Navigation Satellite System) Instrument Approach Procedure has been established at Chandragadhi Airport (VNCG) to enhance the safety and efficiency of the aircraft operations and materialize the National PBN Implementation Plan of Nepal.

According to the source, the newly established RNP Approach RNAV (GNSS) procedure is designed in accordance with the criteria as stipulated in the ICAO PANS-OPS DOC 8168 VOL. II. A full arrival, approach and missed approach trajectories along with associated holdings have been designed in the procedure. There are two RNP1 STARs (Standard Terminal Arrival Route), two RNP1 SIDs (Standard Instrument Departure) and one RNP APCH (RNAV GNSS – LNAV only) procedures to Chandragadhi Runway 10 and are named in accordance with the ICAO naming convention as tabulated below:-

RNAV is a method of navigation having levels of accuracy that permit aircraft operations along any desired course either within the coverage of a station referenced system or within the limits of a self-contained system. RNAV routes are specified by a number of ‘waypoints’. These waypoints are not coincident with point source aids such as VOR, DME or NDB (Non Directional Beacon) facilities but are defined as positions in latitude and longitude based on the WGS 84 system.

Similarly, GNSS is an umbrella term that encompasses all global satellite positioning systems. This includes constellations of satellites orbiting over the earth’s surface and continuously transmitting signals that enable aircraft to determine their position.

As per the CAAN, the operators before commencing the procedure, pilot in command must ensure that the navigation database is current and the aircraft’s capability of conducting the procedure like GNSS availability system performance and must ensure that they comply with the all necessary operational approvals from CAAN. The aircraft must be equipped with GNSS as specified in Nepalese Flight Operations Requirements (FOR) and governed by the AIC 00112011 dated 01 August 2011 (ATS Requirements for PBN in Nepalese Airspace) and all necessary navigation system are to installed onboard so as to keep the track keeping accuracy while commencing RNP1, RNP Approach and associated Missed Approach. If the RNP Approach capability is lost by the aircraft, the ATC shall be informed as soon as possible the alternate course of action from the pilots of the concerned aircraft. The approach procedure is expected to come in operation from June 21, 2018.

Likewise, CAAN has also planned to equip Chandragadhi Airport with essential VOR (VHF Omnidirectional Range)/DME (Distance Measure Equipment) and Runway Lighting System on the existing runway. The airport is expected to provide service at night (IFR Flights) from Dashain. With this progress, Chandragadhi Airport now will take a leap forward in providing better service to both the airliners and the passengers.

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