AIP for Hong Kong (section ENR-2.1) valid from 15 MAY 2025

ENR 2 Air traffic services airspace

ENR 2.1 FIR, UIR, TMA

1	2	3	4	5
Name Lateral Limits Vertical Limits Class of Airspace	Unit Providing Service	Call Sign Language(s) Area and Conditions of Use Hours of Service	Frequency/Purpose	Remarks
1. HONG KONG FIR
23 40 00N 117 30 00E	HONG KONG ACC	HONG KONG RADAR	118.925 MHZ	ATC will advise
21 00 00N 117 30 00E		English	121.3 MHZ	frequency in use
16 40 00N 114 00 00E		H24	122.95 MHZ
19 30 00N 111 30 00E			123.475 MHZ
21 25 00N 111 30 00E			123.7 MHZ
			123.95 MHZ
then along the limit of the territorial			125.175 MHZ
waters of the People’s Republic of			125.325 MHZ
China, ie 3 NM off-shore and the			125.8 MHZ
northern boundary of Macao and			126.3 MHZ
the Hong Kong Special			126.5 MHZ
Administrative Region, to			127.1 MHZ
23 40 00N 117 30 00E			127.55 MHZ
UNL SFC			128.125 MHZ
UNL SFC			128.75 MHZ
			129.9 MHZ
Classes A, C and G as defined in			132.15 MHZ
paras 2, 3, 4, 5 and 6 below			132.225 MHZ
			132.525 MHZ
			132.6 MHZ
			132.775 MHZ
			132.8 MHZ
			133.825 MHZ
			134.3 MHZ
			135.6 MHZ
			121.5 MHZ/
			Emergency FREQ
			5655 KHZ
			8942 KHZ
			13309 KHZ
	HONG KONG RCC	SEARCH AND RESCUE	123.1 MHZ/SAR
		English	3023 KHZ/SAR
		HR as required

1	2	3	4	5
Name Lateral Limits Vertical Limits Class of Airspace	Unit Providing Service	Call Sign Language(s) Area and Conditions of Use Hours of Service	Frequency/ Purpose	Remarks
2. HONG KONG TMA
23 40 00N 117 30 00E	HONG KONG ACC/	HONG KONG RADAR	118.925 MHZ	ATS will advise
21 00 00N 117 30 00E	APP	English	119.1 MHZ	frequency in use
18 56 00N 115 49 00E		H24	119.35 MHZ
19 00 00N 112 30 00E			119.5 MHZ
19 30 00N 111 30 00E			121.3 MHZ
then along the Hong Kong /			122.0 MHZ
Guangzhou FIR BDRY to			122.65 MHZ
23 40 00N 117 30 00E			123.225 MHZ
			123.475 MHZ
			123.7 MHZ
			123.8 MHZ
(a)			123.95 MHZ
within 50 NM from BIGEX, but			124.05 MHZ
excluding the airspace within and			125.175 MHZ
above:			125.325 MHZ
(i) Hong Kong Control Zone (CTR),			125.8 MHZ
as listed in para 3 and			126.3 MHZ
(ii) Uncontrolled Airspace			126.5 MHZ
Reporting Areas (UCARAs), as			127.1 MHZ
listed in para 6.			127.55 MHZ
			128.125 MHZ
UNL 2 000 ft			128.75 MHZ
UNL 2 000 ft			129.9 MHZ
			132.15 MHZ
			132.225 MHZ
Class A :			132.525 MHZ
UNL 8 000 ft			132.6 MHZ
UNL 8 000 ft			132.775 MHZ
			132.8 MHZ
Class C :			133.825 MHZ
8 000 ft 2 000 ft			134.3 MHZ
8 000 ft 2 000 ft			121.5 MHZ/
			Emergency FREQ
(b)
the airspace above the Hong Kong
Control Zone (CTR), as listed in
para 3,
UNL 9 000 ft
UNL 9 000 ft
Class A


(c)
the airspace above the
Uncontrolled Airspace Reporting
Areas (UCARAs), as listed in
para 6,

UNL 9 000 ft
UNL 9 000 ft
Class A

9 000 ft Upper limit of UCARA
9 000 ft Upper limit of UCARA
Class C

(d)
exceeding 50 NM from BIGEX

UNL 8 000 ft
UNL 8 000 ft
Class A

1	2	3	4	5
Name Lateral Limits Vertical Limits Class of Airspace	Unit Providing Service	Call Sign Language(s) Area and Conditions of Use Hours of Service	Frequency/ Purpose	Remarks
3. HONG KONG CONTROL ZONE (CTR)
22 28 34N 114 00 54E	HONG KONG TWR/	HONG KONG TOWER	118.2 MHZ	ATS will advise
22 26 59N 114 00 25E	ZNC/APP	HONG KONG ZONE	118.4 MHZ	frequency in use
22 25 51N 114 03 03E		HONG KONG APPROACH	118.7 MHZ
22 24 20N 114 04 10E		HONG KONG DEPARTURE	119.1 MHZ
22 25 15N 114 07 08E		English	119.35 MHZ
22 24 40N 114 10 40E		H24	119.5 MHZ
22 22 40N 114 13 20E			120.6 MHZ
22 20 30N 114 13 25E			122.0 MHZ
22 15 15N 114 21 00E			122.075 MHZ
22 08 50N 114 21 00E			122.65 MHZ
22 08 50N 114 17 05E			123.225 MHZ
22 08 20N 114 15 20E			123.8 MHZ
22 08 50N 114 14 10E			124.05 MHZ
22 08 50N 114 11 45E			124.65 MHZ
22 06 40N 114 11 45E
21 56 25N 113 48 00E
22 13 44N 113 39 57E
22 24 34N 113 49 44E			121.5 MHZ/
			Emergency FREQ


9 000 ft SFC
9 000 ft SFC
Class C

1	2	3	4	5
Name Lateral Limits Vertical Limits Class of Airspace	Unit Providing Service	Call Sign Language(s) Area and Conditions of Use Hours of Service	Frequency/ Purpose	Remarks
4. HONG KONG AIRSPACE TO THE SOUTH OF THE HONG KONG TMA
19 30 00N 111 30 00E
19 00 00N 112 30 00E
18 56 00N 115 49 00E
16 40 00N 114 00 00E
UNL SFC
UNL SFC

Class A :	HONG KONG ACC	HONG KONG RADAR	122.95 MHZ	ATS will advise
UNL 8 000 ft		English	123.7 MHZ	frequency in use
UNL 8 000 ft		H24	125.325 MHZ
			125.8 MHZ
			127.1 MHZ
			128.125 MHZ
			128.75 MHZ
			129.9 MHZ
			132.15 MHZ
			132.525 MHZ
			132.775 MHZ
			135.6 MHZ

Class G :	HONG KONG FIS	HONG KONG INFORMATION	122.4 MHZ	ATS will advise
8 000 ft SFC		English	122.075 MHZ	frequency in use
8 000 ft SFC		H24
			121.5 MHZ/	Flight
			Emergency FREQ	Information
				Service and
				alerting service
				provided

1	2	3	4	5
Name Lateral Limits Vertical Limits Class of Airspace	Unit Providing Service	Call Sign Language(s) Area and Conditions of Use Hours of Service	Frequency/ Purpose	Remarks
5. AIRSPACE BENEATH HONG KONG TMA
23 40 00N 117 30 00E	HONG KONG FIS	HONG KONG INFORMATION	122.4 MHZ	ATS will advise
21 00 00N 117 30 00E		English	122.075 MHZ	frequency in use
18 56 00N 115 49 00E		H24
19 00 00N 112 30 00E			121.5 MHZ/	Flight
19 30 00N 111 30 00E			Emergency FREQ	Information
then along the Hong Kong /				Service and
Guangzhou FIR BDRY to				alerting service
23 40 00N 117 30 00E				provided
(a)
within 50 NM from BIGEX,
but excluding Hong Kong
Control Zone (CTR) as listed in
para 3 and Uncontrolled
Airspace Reporting Areas
(UCARAs) airspace as listed in
para 6.
2 000 ft SFC
2 000 ft SFC
Class G *
(b)
exceeding 50 NM from BIGEX
8 000 ft SFC
8 000 ft SFC
Class G *
* Note - requires aircraft operating in such Class G airspace to have equipment capable of maintaining direct two-way communication with ATC

1	2	3	4	5
Name Lateral Limits Vertical Limits Class of Airspace	Unit Providing Service	Call Sign Language(s) Area and Conditions of Use Hours of Service	Frequency/ Purpose	Remarks
6. UNCONTROLLED AIRSPACE REPORTING AREAS (UCARAS)
(i)	HONG KONG FIS	HONG KONG INFORMATION	121.0 MHZ	ATS will advise
22 24 45N 114 28 50E		English	122.075 MHZ	frequency in use
22 21 55N 114 30 09E		01:00 - SS
22 08 50N 114 30 09E
22 08 50N 114 21 00E			121.5 MHZ/
22 15 15N 114 21 00E			Emergency FREQ
22 20 30N 114 13 25E
22 22 40N 114 13 20E
22 24 40N 114 10 40E
22 25 15N 114 07 15E
22 27 50N 114 04 00E
22 30 20N 114 07 30E
22 29 50N 114 08 20E
22 32 20N 114 12 30E
then along the coast line to
22 31 30N 114 13 00E
22 30 00N 114 14 25E
22 29 00N 114 14 30E
22 28 00N 114 14 00E
then along the coast line to
22 24 20N 114 16 40E
22 24 55N 114 17 30E
22 24 50N 114 18 20E
22 25 40N 114 18 30E
22 24 15N 114 20 30E
22 25 50N 114 22 30E
22 24 45N 114 24 20E
22 24 45N 114 28 50E
2 000 ft SFC
2 000 ft SFC
Class G *

(ii)
22 32 20N 114 12 30E
then along the coast line to
22 32 22N 114 12 59E
22 33 56N 114 16 34E
22 34 06N 114 19 59E
22 33 43N 114 26 02E
22 32 42N 114 27 19E
22 28 07N 114 27 18E
22 24 45N 114 28 50E
22 24 45N 114 24 20E
22 25 50N 114 22 30E
22 24 15N 114 20 30E
22 25 40N 114 18 30E
22 24 50N 114 18 20E
22 24 55N 114 17 30E
22 24 20N 114 16 40E
then along the coast line to
22 28 00N 114 14 00E
22 29 00N 114 14 30E
22 30 00N 114 14 25E
22 31 30N 114 13 00E
then along the coast line to
22 32 20N 114 12 30E
3 000 ft SFC
3 000 ft SFC
Class G *
* Note - requires aircraft operating in such Class G airspace to have equipment capable of maintaining direct two-way communication with ATC

1	2	3	4	5
Name Lateral Limits Vertical Limits Class of Airspace	Unit Providing Service	Call Sign Language(s) Area and Conditions of Use Hours of Service	Frequency/ Purpose	Remarks
7. UIR
Nil