1. ICAO Noise Abatement Departure Procedure
RWY 07L/RWY 07R
1.1 ICAO have developed aircraft operating procedures, Noise
Abatement Departure Procedure 1 (NADP 1) and Noise Abatement Department
Procedure 2 (NADP 2), for the take-off climb to ensure that the
necessary safety of flight operations is maintained whilst minimizing
exposure to noise on the ground.
1.2 NADP1 is intended to provide noise reduction for noise sensitive
areas in close proximity to the departure end of the runway. NADP
2 provides noise reduction to areas more distant from the runway
1.3 All operators are to adopt either NADP 1 or NADP 2 procedures
for all take-offs on RWY 07L or RWY 07R. Operators are not required
to inform CAD of the adopted procedure.
1.4 Full details of NADP 1 and NADP 2 are contained dures for Air Navigation Services - Aircraft Operations, Volume 1 - Flight Procedures, (PANS-OPS, Doc 8168, Volume 1).
2. Noise Mitigating Measures
2.1.1 The following procedures are implemented daily to reduce aircraft noise levels when operating conditions permit. These measures include :
a) Continuous Descent Approach (CDA) Procedure for RWY 25L/25R;
b) Preferential use of RWY 07L/07R;
c) Noise Mitigating SIDs RWY 07L/07R;
d) Special ATC handling procedures.
2.1.2 Noise mitigating procedures are not applicable to flights
necessary for the calibration of procedures, navigation aids and
2.2 CONTINUOS DESCENT APPROACH (CDA) PROCEDURE FOR 25L / 25R
2.2.1 As a noise mitigating measure, between 1501 and 2300 UTC,
arrivals to RWY 25L/25R may expect an ILS/DME approach with a
continuous descent approach (CDA) procedure subject to the prevailing
2.2.2 CDA Procedure
a) Aircraft on the CDA procedure are expected to achieve a continuous
descent profile approximating a 3°vertical profile from 8000
ft to intercept the glidepath at 4500 ft or above. During a CDA
pilots should maintain a low thrust setting and should not have
recourse to level flight.
b) Aircraft will be given radar vectors from about 27 NM from
touchdown (12 NM to FAP), to intercept the LOC outside of the
FAP (RWY 25L LOTUS, IFL DME 15 NM - RWY 25R RIVER, ITFR DME 15
NM ). The estimated track miles to touchdown will be passed with
descent clearance and further distance information may be given
c) The recommended speed for the CDA intermediate approach segment
is 210 - 225 KIAS, this should permit a relatively clean configuration
for as long as practicable. The published speed restrictions for
the final approach segment are applicable for the CDA procedure,
viz. 180 KIAS at FAP and between 150 - 160 KIAS at OMF, 4 NM from
d) If aircraft cannot comply with the CDA procedures or speed
limitations, the pilot should advise ATC in good time so that
alternative arrangements can be made.
2.3 PREFERENTIAL USE OF RWY 07L/07R
2.3.1 As a noise mitigating measure between 1601 and 2300 UTC, RWY 07L/07R will be selected as the runway-in-use whenever the tailwind component is not greater than 5 knots. During this period RWY 25L/25R may be used if operationally required, e.g. unserviceability of navigation aids, adverse weather conditions, aircraft performance, traffic situations, etc.
2.4 NOISE MITIGATING SIDS RWY 07L/07R
2.4.1 As a noise mitigation measure between 1501 and 2300 UTC, all departures from RWY 07L/07R east-bound (e.g. via ELATO), north-bound (e.g. via BEKOL), or southeast-bound (e.g. via NOMAN), may expect the appropriate ATENA, LOGAN, RASSE or SKATE SID via RAMEN (see list of Hong Kong International Airport SIDs page AD2-30). These noise mitigating SIDs route over the West Lamma Channel and avoid overflight of densely populated areas.
2.4.2 Pilots should comply with the published speed control restriction
(220 KIAS maximum) until established on track to RAMEN. Pilots
of aircraft flying with on-board FMS/RNAV equipment are reminded
that the waypoints PORPA and ROVER are "fly-over" positions.
To ensure clearance from terrain the initial right turn to RAMEN
must not be commenced until passing PORPA or ROVER.
2.5 SPECIAL ATC HANDLING PROCEDURES FOR RWY 25L / 25R DEPARTURES
2.5.1 As a noise mitigating measure between 1501 and 2300 UTC,
departures from RWY 25L/25R may expect to remain on the appropriate
SID track until passing 9000 ft or until they are south of Lantau
Island, before being provided with radar vectors, as appropriate.