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Study Notes

Approach Lighting System Explained!

Approach light system(ALS) is part of aviation ground lighting patters primarily used for identification and aircraft alignment with runway center line. ALS is made of several parts collectively working to serve the said purpose. Availability of ALS category for runway depends on its licensing category and need for continuous operation during period of poor visibility.

Runway Reference Code Numbers and Code Letters

Runway Code Numbers Runway Code Runway Length Code 1 Runways less than 800 metres long Code 2 Runways 800-1199 metres long Code 3 Runways 1200-1799 metres long Code 4 Runways 1800 metres long Runway Code Letters Code Letter Wingspan Outer main gear wheel span A < 15 m < 4.5 m B 15 m but

Holding Patterns and Entries

First and for most important question of this content is why to hold? Reasons of holding are multiple and expected to increase with growth of air traffic. Some common reasons for holding are: Aircraft in emergency Traffic congestion Equipment Outage Pilots buying time to make decision or trouble shooting Bad weather Unavailability of Runway Holding

Part 4: GPS – Stand Alone GPS and GPS Overlay Approach Procedures

Part 3: GPS – Use of GPS for IFR operations Stand Alone GPS Approaches These are non-precision approaches designed based in sole use of GPS equipment. These approaches are slowly being phased out and at present less than 200 approaches are left world wide. Approach charts for stand alone GPS approaches are marked as “GPS

Part 3: GPS – Use of GPS for IFR operations

Part 2: GPS – RAIM (Receiver Autonomous Integrity Monitoring) and FDE (Fault Detection and Exclusion) This section covers the basic requirements and understanding of use of GPS for IFR operations. For detailed and technical equipment requirements please refer ICAO and state regulatory documents. The content here forth in this section is written from pilot’s point

Part 1: GPS – Global Positioning System

GPS – Global Positioning System is space based radio navigation system used to determine precise position anywhere in the world. GPS structure is broadly divided into three segments (Space, Control and User Segments). GPS is maintained and monitored by Department of defense(DOD). Position determined by GPS is based on cartesian earth-centered, earth fixed coordinates as

ATS Route Designators and Usage in voice communication

As per ICAO Annex 11 basic designators for ATS routes shall consist of a maximum of 6 alpha numeric characters as per the rules defined below. Route designation includes type of route: high/low altitude, specific airborne navigation equipment requirements (RNAV), aircraft type using the route primarily or exclusively. Basic designator of ATS route contains one


ICAO Approach Classifications

Part 3: PBN – Airspace Concept RNP Approach (RNP APCH) RNP Approach procedures are titled as RNAV(GPS) and offer several level of minima to accommodate varying aircraft equipage: LNAV LNAV/VNAV Localizer Performance with Vertical Guidance (LPV) More information on LNAV, LNAV/VNAV and LPV is given in consecutive parts. Key points of RNP Approach: RNP APCH

Part 3: PBN – Airspace Concept

Part 2: PBN – RNP 10, RNAV 10, P-RNAV, B-RNAV, MNPS Airspace Concept : It describes the intended operations within an airspace. Concept of airspace has been developed to achieve the objective of high safety standards, increasing air traffic capacity, improve efficiency, more accurate flight paths and mitigation of environmental impact. PBN is one of