CAP168
Low visibility operations
1. Aircraft operations at aerodromes during reduced visibility or low cloud conditions present additional hazards to aircraft and to other aerodrome
users. As visibility reduces, the ability of ATC, pilots, vehicle drivers and other personnel to identify hazards and to take remedial action in a timely manner becomes limited. In conditions of low cloud, the time available for the pilot of an approaching aircraft to visually assess the aerodrome environment is reduced.
2. Low Visibility Operations (LVOs) is a general term used for airside operations in conditions of reduced visibility or low cloud conditions and consists of low visibility safeguarding and low visibility procedures (LVPs).
3. Low visibility safeguarding is the process carried out which prepares the aerodrome for low visibility procedures.
4. Low visibility procedures are the actions carried out by ATC and the aerodrome operator in respect of aircraft operations and vehicle movements. This may include restricted access to the manoeuvring area, the protection of the ILS critical and sensitive areas and a reduced aircraft movement rate.
5. LVPs are required for the following types of operation:
ƒƒLower than standard category I;
ƒƒCategory II;
ƒƒOther than standard category II;
ƒƒCategory III;
ƒƒTake-offs below 550 m RVR;
ƒƒApproaches utilising an Enhanced Vision System (EVS) where the actual RVR
is below 550 m.