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d. Ensuring availability and readiness of secondary power supply for change over time of maximum one second for
Runway edge and Runway end lights supported by UPS/DG sets.
Note-1: RWY edge and RWY end lights may continue to operate on main power supply during Safeguarding Procedures.
Whenever, LVP is to be implemented the RWY Edge and RWY End lights shall be put on Standby Power Supply
(DG set or UPS). This operation needs to be completed before LVP is implemented.
Note-2: ln case of DG set, Main power supply shall act as standby power. At airports where UPS is capable of maintaining
the required AGL system with one second of switch over time with Main Supply, the main supply can continue to
be primary supply and the Generator Supply con be kept as Standby Power supply.
e. The TWR controller shall ensure that the Sequence Flashing Lights (SFL) associated with the approach light shall
be switched ON.
f. ln case of non-availability of real-time RVR or if the RVR instrument is unserviceable, suitable arrangements shall
be made for obtaining Manual RVR for the Runway in use, prior to each departure. Tower Supervisor shall
coordinate with MET for the provision of manual RVR. Airside Ops Manager shall provide necessary transport/
VHF facilities to MET for this purpose.
7. LOW VISIBILITY PROCEDURES:
7.1 Implementation of Low Visibility Procedures:
Whenever Visibility/RVR reduces to 800 m or below and/or cloud ceiling is at 200 feet or below, Tower Supervisor shall
coordinate with Airside Operations team and ARFF to confirm whether the Safeguarding Procedures have been
completed. Upon confirmation of completion of Safeguarding Procedures, Tower supervisor will implement Low
Visibility Procedures and communicate the same to Airside operations, AOCC and ARFF. No operations shall continue
below 550 m RVR unless LVP is imposed.
7.2 Actions by various units during LVP:
a. Duty MET Officer shall keep Duty Officer Tower/Tower Supervisor informed of any change in Visibility/RVR.
b. The following shall be included in DATIS. "LOW VISIBILITY PROCEDURES IN FORCE”
c. ATC shall restrict the number of aircraft in such a way that not more than 2 aircraft are permitted to pushback at a
time and 1 aircraft on the manoeuvring area. This can be achieved by actual position reporting by the pilots and/or
Follow Me.
d. Aircraft movement shall be restricted to one aircraft in the manoeuvring area when RWY Guard Lights are
unserviceable at any of the TWY/RWY intersection.
e. TWR shall permit departures only from the beginning of the Runway in use.
f. ATC shall not permit any ground run on the manoeuvring area except idle power run up on the stands, after
coordination with Duty Manager-Airside Operations/Follow Me.
g. All non-sked aircraft shall be provided with Follow-Me service. Other aircraft may be provided with Follow Me
service on request from ATC/pilot.
h. The number of the vehicles on the manoeuvring area shall be restricted to bare minimum and records of all-operating
on the manoeuvring area shall be maintained by Airside Operations.
i. Vehicles fitted with a serviceable VHF R/T shall only be allowed to operate on the manoeuvring area. ln case of
extreme urgency, a vehicle without a VHF RT may be permitted provided it is escorted by a Follow Me Vehicle with
a serviceable VHF R/T.
j. Airside Operations team shall ensure that towing of aircraft is done under escort of "Follow Me" vehicles. Only one
towing at time shall be permitted. "Follow Me" shall inform ATC of any deviation from the route cleared by ATC.
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