CAT II/III OPERATIONS AT AERODROMES
PROCEDURES FOR CONTROL OF TRAFFIC WHEN ILS CATEGORY II APPROACH IS IN USE AT KIA
During periods of reduced visibility, it is necessary to introduce procedures to ensure that high levels of safety are maintained in the aircraft movement and that runway operations are properly safeguarded.
Meteorological Office is responsible of determining whether there is low visibility at Kigali international Airport. RVR is used to determine both horizontal and vertical visibility of the runway.
After determining that there is a low visibility, the MET Officer on duty
will
shall
immediately notify aerodrome controller at KIA.
Upon receiving such information, the aerodrome
control
controller
tower
(Tower)
will
have to update the ATIS with the Low Visibility activation message and shall
inform the area control unit
of the Low visibility operations and
when procedures for ILS CAT II
are
and low visibility operations will
be
in
applied
force
and also when such procedures are no longer in force.
LVP
In
addition
will
to
only
the
be
actions
in
above
force
by
when
ATC
the
after
activation
he/she
message
is
informed
broadcasted
of
via
low
ATIS
visibility
on
by
128.7
Met
MHz
office,
or
the
by ATC
aerodrome
Controller
Additionally,
on
Aerodrome
duty
Controller
shall
(Tower)
also
shall
inform the following of the activation of
Low visibility operations for ground movements coordination;
LVPs;
-
Airside
Coordinator
duty manager;
/ Operations Officer on duty;
-
The Marshaller on duty and;
-
RFFS shift leader on duty.
-
MIREI/CNS
Measures for
ILS
category
CAT
II
will
procedures
be
shall
in
be
use
implemented
when
the
RVR is
less than
below
800m
700m
but not less than
300m,
300m
decision
and/or ceiling
height lower
than
of
60m
200ft
(200ft),
(60m)
but
or less.
Measures for
not
lower
Low visibility take-off procedures (LVTOP) shall be
than
30m
implemented when the
(100ft).
RVR
value
is
for
less
takeoff
than
will
700m
be
but not less than 400m.
500m
Aerodrome controller will switch on CAT II aeronautical ground lights and ensure continuous monitoring of air field ground lights display;
Aerodrome controller will report any relevant equipment failure and degradation, without delay, to the flight crew
concerned.
Information for crews
In general, when
concerned,
the
area
MET-REPORT
control
information
unit,
is
and
close
aerodrome
to operational minima, the values should be
operator.
communicated to crews.
It should be noted that the decision to initiate or continue the sequence of manoeuvres of an approach procedure below operational minima rests with the pilot-in-command.
Procedures for the control of traffic on the manoeuvring area;
Arrival flight management
Upon first contact with the aircraft, the Air Traffic Controller will communicate the latest MET-REPORT to the aircraft, including the RVR value. The controller shall systematically turn on the lighting during landing and provide information on any malfunction of the lighting equipment.
When the RVR is less than 700m but not less than 300m, or Visibility is less than 800m, CAT II approaches shall be in force.
Air Traffic Controllers shall clear one aircraft for approach and the rest shall be holding in their respective holding patterns.
If the ATC can’t visually see the aircraft landing, he/she shall instruct the aircraft to “report runway vacated” after landing.
Aircraft on ground shall maintain their parking positions to avoid signal interference.
Note: Requests for practice CAT II approaches outside of LVP conditions may be approved but LVP will not be enforced as ILS signal protection cannot be guaranteed.
Departing Flight Management
Prior to start-up, the controller will provide the pilot with the latest MET-REPORT to the aircraft specifying the RVR value. The controller shall always turn on the runway lighting and provide the information on any abnormal operation of the equipment. When RVR is less than 700m but not less than 400m or visibility is less than 800m, Low visibility operations shall be in force. the following additional measures will be applied.
• Only one aircraft movement at time during departure will be allowed.
• If the ATC can’t visually see the aircraft taking-off, he/she shall instruct the aircraft to “report airborne” after take-off.
• Follow me on request.
NOTICE: Minimum RVR for take-off is 400m for CAT A-B-C-D
Control of the movement of persons or Vehicles on the manoeuvring area.
During the activation of Low visibility operations, no person or vehicle is allowed to circulate on the manoeuvring area unless its presence is absolutely necessary.
Essential Vehicles and/or persons permitted to enter the manoeuvring area shall maintain two-way communication with ATC.
Operational inspection of the runway shall be done before any landing and/or any departure
Cancellation of the Low visibility operations.
-
Low visibility operations are cancelled as soon as the RVR is 700m or more. Or visibility of 800m or more as determined/provided by MET office.
-
In case of the equipment failures.
The runway-holding positions to be used;
|
A, B and C |
The minimum distance between an arriving and a departing aircraft to ensure protection of the sensitive and critical areas;
|
Only one aircraft movement at time during departure or arrival will be allowed. |
Ensuring that aircraft and vehicles have vacated the runway
|
Aircraft and vehicles will maintain two-way communication with aerodrome controller and report vacating the runway. |
Separation of aircraft and vehicles;
|
Withdraw all vehicles and personnel involved in construction, maintenance and other non-essential activities. |
Spacing between successive approaching aircraft;
|
One aircraft will be cleared for approach and the rest will be holding in their respective holding patterns. |
Action(s) to be taken in the event low visibility operations need to be discontinued, e.g. due to equipment failures; and
|
ILS CAT II will be suspended and revert to ILS CAT I |