RECENT TOPICS ON AIRCRAFT NOISE AT NARITA

Narita International Airport Corporation

Kyoko ANZAI

1) The change in Japanese aircraft noise standard

2) Special provisions for LTO restrictions at Narita Airport

Contents

In 1973, the Japanese Government introduced simplified WECPNL ( WECPNLJ )

as an EQSAN (Environmental Quality Standards for Aircraft Noise)

※WECPNL ( weighted Equivalent Continuous Perceived Noise Level )

The change in Japanese aircraft noise standard

the duration time of noise event is assumed as 20 seconds

27-Nlog10LWECPNL 10AsmaxJ

ned N10N3NN AsmaxL ：average of A-weighted maximum noise level

Nd : numbers of aircraft noise events between 07:00 and 19:00

LAsmax

20secNe : numbers of aircraft noise events between 19:00 and 22:00

Nn : numbers of aircraft noise events between 00:00 and 07:00, 22:00 and 2400

base quantity ： LAsmax(A-weighted maximum noise level)

×10

00:00 07:00 19:00 22:00 24:00

×10×3

: Numbers of noise events

When there is one actual event in each period, N=1+3+10+10=24

New Japanese Aircraft Noise Standard … Lden

Base quantity ：LAE

１sec

LAE

the duration time of noise event

10dB

10

10

10

5

10010

,,,

101010log10nkAEejAEdiAE LLL

den T

TL

T :24 hours(86400seconds)

T0 :1 second

nkAEL ,

diAEL ,

ejAEL ,

: LAE in 07:00 – 19:00

: LAE in 19:00 – 22:00

: LAE in 22:00 – 07:00

00:00

The energy of noise is

evaluated correctly.

+10dB +10dB+5dB

1sec07:00 19:00 22:00 24:00

Lden

diAEL , ejAEL , nkAEL ,nkAEL ,

86400 sec

(Level of A-weighted sound exposure)

(Day-evening-night averaged sound level)

The change in Japanese aircraft noise standard

Fig. Average of aircraft noise duration time ( Oct. 2013)

The change in Japanese aircraft noise standard

There are some residential areas around the airport.

NAA decided to evaluate ground noise as well.

In Narita…

The characteristics of Japanese Lden…

The evaluation target for the index includes ground noise such as APU noise,

aircraft taxing noise and engine testing noise in addition to aircraft flyover noise.

The change in Japanese aircraft noise standard

Blast Fence（#512）

Noise Reduction Hangar (#602)

NK36

NK38

NK09

NK37

NE01

NE02

Aircraft noise monitoring stations

Ground noise monitoring stations

The change in Japanese aircraft noise standard

Jan Feb Mar Apr May Jun Jly Aug Sep Oct

#512 5 3 0 9 3 4 6 2 8 6

NRH 48 43 58 77 77 65 60 77 69 69

0

10

20

30

40

50

60

70

80

90

100

freq

uen

cy

Fig. Engine test frequency at Narita Airport(2013)

The change in Japanese aircraft noise standard

Fig. Noise level charts of engine test at NRH (B767-300/High power)

NRH

NK38

NE02

NRH

NE02

NK38

NK38

NRH

NE02

The change in Japanese aircraft noise standard

Fig. Noise level charts of engine test at 512sp (B777-300ER/takeoff power)

NK38

NE02

NE01

NE01

NE02

NK38

NK38

#512

NE01

NE02

The change in Japanese aircraft noise standard

Apr May Jun Jul Aug Sep Oct Avr.Avr.FY2012

aircraftnoise

80.6% 96.0% 95.8% 95.5% 96.9% 91.9% 77.1% 90.5% 88.4%

groundnoise

19.4% 4.0% 4.2% 4.5% 3.1% 8.1% 22.9% 9.5% 11.6%

0%

20%

40%

60%

80%

100%

contributing rate of ground noise in

 Lden

(％)

Fig. result of contributing rate at NK38 (2013)

#512

NK38

NRH

Fig. map of monitoring station NK38

58.7

56.7

55.856.1

56.4

54.1

55.7

56.4

51.0

52.0

53.0

54.0

55.0

56.0

57.0

58.0

59.0

60.0

Apr May Jun Jul Aug Sep Oct Avr.

Fig. result of Lden at NK38

The change in Japanese aircraft noise standard

Narita has kept night-time restrictions strictly for 35years since the airport opened because of the noise issue…

２３：００

６：００

〈 TAKE-OFF 〉 〈 LANDING 〉

Fig. Night-time operating restrictions at NRT(until 2013/3/30)

The exception being….

“Cases of emergency or unavoidable situations”

（Examples）

・Aircraft encountering extraordinary circumstances

・Emergency involving crew/passengers

・Aircraft in search/rescue action

・Aircraft in urgent news reporting mission

・Evacuation from typhoon & other circumstances where LTO inevitable

・Emergency refueling under extraordinary weather conditions, etc.

Night‐time curfew

Special provisions for LTO restrictions at Narita airport

Night-time LTO restrictions at Narita from 31 March 2013

２３：００

０：００

６：００

Delays due to unavoidable circumstances

－ To be added to current practice －

Night‐time curfew

 

Cases of “emergency or unavoidable situation”

Fig. New night-time operating restrictions at NRT

Special provisions for LTO restrictions at Narita airport

Criteria to be met concurrently

Categories (and Former Categories)

R1 R2 R3 R4 R5 R6 R7 R8

(F) (E) (D) (C) (B) (A)

Cumulative EPNdB reduction from ICAO Chapter 3 standard of at least:

Less

Than

0

0

or

more

5

or

more

10

or

more

15

or

more

20

or

more

25

or

more

30

or

more

Individual EPNdB reduction from ICAO Chapter 3 standard at each noise measurement point of at least:

Not

applicable

0 1 2 3 4 5 6

ACI Rank

Narita Rank

Table Narita Noise Rating Index

Special provisions for LTO restrictions at Narita airport

1) Aircraft falling under Narita Noise Rating Index categories A,B and C…

Applicable Charge

The operator, in addition to the normal landing charge, will pay an additional equivalence of 100% of the normal landing charge for each take-off/landing.

Narita

Departure airport

Between 23:00JST and 23:59JST

Delay…

2) Landing and Take-off operation in some cases, except for causes attributable to the operator

×２

For local governments of noise-affected area as extra charge

For NAA as landing charge

Landing charge

For example, reason No.1 are…

Unusual weather conditions

Special provisions for LTO restrictions at Narita airport

Sudden/serious medical cases…

reason

No.details

1

Landing of aircraft destined to NRT delayed due to unusualweather conditions, sudden/serious medical cases or failureof essential airport functions at the port of departure

2

Landing of aircraft destined to NRT delayed due to landing atanother airport for unusual weather conditions or otherirregular circumstances en route

3

Landing of aircraft destined to NRT delayed as a result ofserial delays caused by unusual weather conditions, irregularcircumstances or ensuring safety of flight operation

4

Landing of departed aircraft turning back due to unusualweather conditions or other irregular circumstances atdestination airport

5

Take-off/landing of aircraft delayed due to unusual irregularcircumstances other than those under 1)-4) and/or ensuringsafety of flight operation

Reason No.1 : Landing/due to unusual weather conditions, etc..

No datedirection

and r/w

T/O or

L/Dflight

desti

nationATA/D type

narita noise

index class

reason

no.

1 2013/4/13 16R T/O INT/SP DXB 23:14 A380-800 A 5

2 2013/5/12 16R L/D INT/SP JFK 23:56 B777-300ER B 3

3 2013/5/15 34R T/O INT/SP HNL 23:14 B747-400 B 5

4 2013/5/17 16L T/O DMS/SF OKA 23:03 B767-300 B 5

5 2013/5/17 16L T/O INT/SP HKG 23:11 B777-300 B 5

6 2013/5/19 34L L/D INT/SP CAN 23:10 B767-300 C 1

7 2013/6/7 34L L/D INT/SP PVG 23:26 B767-300 C 4

8 2013/6/7 34L L/D INT/SP PVG 23:53 B767-300 B 1

9 2013/6/23 34L L/D INT/SP PVG 23:04 B737-700 C 1

10 2013/6/23 34L L/D INT/SP PVG 23:19 B767-300 B 1

11 2013/6/28 16R T/O DMS/SF OKA 23:31 B767-300 B 5

12 2013/7/1 16L L/D INT/SP CAN 23:19 B767-300 C 1

13 2013/7/5 16R T/O DMS/SF OKA 23:17 B767-300 B 5

14 2013/7/8 16L L/D INT/SP PEK 23:10 A320 B 1

15 2013/7/9 16L T/O INT/SP GUM 23:45 B777-200 B 5

16 2013/7/16 34R T/O INT/SP HNL 23:22 A333 C 5

17 2013/7/25 34L T/O INT/SP DXB 23:14 B777-300ER B 5

33 2013/12/1 16L L/D INT/SP JFK 23:04 B777-300ER B 3

34 2013/12/6 34L T/O INT/SF ANC 23:01 B747-8 A 5

35 2013/12/11 34L T/O INT/SF ANC 23:16 B747-8 A 5

36 2014/1/7 16R L/D INT/SP ORD 23:05 B777-300ER B 1

37 2014/1/8 34L T/O INT/SP BKK 23:08 B747-400 C 5

38 2014/1/21 34L T/O INT/SF SIN 23:24 B767-300 B 5

39 2014/1/30 34L L/D INT/SP PVG 23:09 B767-300 C 1

40 2014/1/30 34L L/D INT/SP PVG 23:15 B777-200 B 1

41 2014/1/30 34L L/D INT/SP PVG 23:32 A330-300 B 1

42 2014/1/30 34L L/D INT/SP PVG 23:40 B767-300 B 3

43 2014/1/31 34L L/D DMS/SP KIX 23:06 A320 B 3

Reason : Restriction of air traffic due to heavy

fog at Shanghai airport.

In 2014/1/30 number of applications :7

Reason No.3 : Landing/ as a result of serial delays caused by unusual weather conditions, etc..

Reason No.5 : Take-off, landing/ delayed due to unusual irregular circumstances, and/or ensuring safety of flight operation

Special provisions for LTO restrictions at Narita airport

15

1

9

1

16

Fig. Breakdown of reasons for 43 flights using the scheme

1 2 3 4 5Reason No.

Advantages

Saving of cost associated with flight cancellation

Increased convenience for user-customers at Narita

Additional payment

Minor change of itinerary

Additional costs for noise countermeasures

Major change of itinerary

Special provisions for LTO restrictions at Narita airport

disclose results under this new rule on our HP

request  health survey onnoise impact in night time

disclose applicationsusing mailing list request to disclose information

under this rule

We decided to conduct survey and we've just  started pre‐survey in

Jan 2014. Main survey will be done inthis summer. 

Special provisions for LTO restrictions at Narita airport

0

10,000

20,000

30,000

40,000

50,000

60,000

2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012

Aircraft flight movemen

ts

（FY）

Fig. Trend in aircraft types at Narita airport

B747‐400

B‐747

B747‐8

MD‐11

A‐330

B‐777

B‐767

A‐320

B‐737

176171

187 188 191 194 191187

191 187

212

100

120

140

160

180

200

220

2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012

X 1,000 flts

(FY)Fig. Number of movements at Narita Airport

Special provisions for LTO restrictions at Narita airport

Fig. ratio of aircraft per noise category

Thank you…