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As per DGCA Civil Aviation Requirements (CAR), Section 8, Series ‘C’, Part-I on All-weather Operations “Quote”
An operator shall not conduct take-off with RVR/visibility less than standard Category I conditions of 550m RVR/800 m
visibility unless Low Visibility Procedure are enforced. “Unquote”.
This provision necessitated the need of Low Visibility Procedure for accommodating/permitting departures in Visibility/RVR
less than 800M/550M even at such airports where there are no CAT II and CAT III operations. Accordingly, Low
Visibility Procedure has been developed for Varanasi airport to accommodate/permit departures in Visibility/RVR less
than 800M/550M.
2. DEFINITIONS AND ABBREVIATIONS:
2.1 Low Visibility Procedures (LVP): Specific procedures applied at an aerodrome for the purpose of ensuring safe
operations during Categories II and III approaches and/or low visibility take-offs.
Note: As per para 5.3 of CAR on All Weather Operations, an operator shall not conduct Take-off with RVR/Visibility less
than standard CAT-I conditions of 550M RVR/800M Visibility unless low visibility procedures are enforced.
2.2 Manoeuvring Area: That part of an aerodrome to be used for the take-off, landing and taxiing of aircraft, excluding
aprons
2.3 Runway Visual Range: The range over which the pilot of an aircraft on the centreline of a runway can see the runway
surface markings or the lights delineating the runway or identifying its centreline.
2.4 Aerodrome Operating Minima: The limits of usability of an aerodrome for:
a) Take off, expressed in terms of runway visual range and / or visibility and, if necessary, cloud conditions.
b) landing in 2 D instrument approach operations, expressed in terms of visibility and/or runway visual range; minimum
descent altitude/height (MDA/H) and, if necessary, cloud conditions; and
c) landing in 3D instrument approach operations, expressed in terms of visibility and/or runway visual range and decision
altitude/height (DA/H) appropriate to the type and/or category of the operation.
d) Aerodrome operating minima for Airports shall be established by the airline/aircraft operators on the OCA/OCH or
DA/DH and ALS facility published by AAI.
e) Adherence to the minima is the responsibility of the pilot in command. However, ATC is responsible to pass the latest
meteorological information and status of aeronautical ground lights and other related facilities at the airport to the pilot
in command, including any significant changes.
2.5 Visibility - Visibility for aeronautical purposes is the greater of:
a) the greatest distance at which a black object of suitable dimensions, situated near the ground, can be seen and recognized
when observed against a bright background.
b) The greatest distance at which lights in the vicinity of 1000 candelas can be seen and identified against an unlit
background.
Note 1. -- The two distances have different values in air of a given extinction coefficient, and the latter b) varies with
the background illumination. The former a) is represented by the meteorological optical range (MOR).
Note 2. -- The definition applies to the observations of visibility in local routine and special reports, to the observations
of prevailing and minimum visibility reported in METAR and SPECI and to the observations of ground visibility.
2.6 Abbreviations:
ADC : Aerodrome Control
ARFF : Airport Rescue and Fire Fighting Services
ATC : Air Traffic Control
ATM : Air Traffic Management
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