Oceanic Flight Route² NOPAC Route (NOPAC: North Pacific)・・・Defined as Airway² PACOTS Route (PACOTS: Pacific Organized Track System)・・・PACOTS consists of flexible track established based on a daily weather forecast
by JCAB and FAA.

² UPR Route (UPR: User Preferred Route)・・・UPR is a method of flight planning that allows oceanic airspace operators tochoose random route based on individual airframes, flight time, weather forecast
etc.

White line：NOPAC RouteBlue line：PACOTS Route[Japan-US Aviation Environmental Workshop 29 November, 2017]1

Flight plan creation procedure

Weather forecast data
updated every 6 hours

Departure Airport
Flying over 8 hours

Flight plan creation

Briefing

1.5 hours

3〜4 hours(Example)
Flight plan creation
(UTC)
08:00
Weather forecast data
updated at 06: 00

Briefing
10:30

Departure
12:00
12:00
Weather forecast
data update

Weather	  forecast	
  update	
  :	  00z,06z,12z,18z	
[Japan-US Aviation Environmental Workshop 29 November, 2017]2

New operating method at oceanic area (DARP)

ATC⑤Changeclearance(※)
HND/NRT

Dispatcher①Get latest weather
forecast data
②Optimum route④Request change to calculation
new route (※)③Share new routewith Pilot (※)

HNLBlue line：Initial route
Yellow line：Optimum path with new predictive wind(※) All communication by data link

[Japan-US Aviation Environmental Workshop 29 November, 2017]

3New operating method at oceanic area (DARP)

06Z  Tokyo  VAAC  Issued  Volcanic  Ash  Diﬀusion  AREADARP  Route
Fuel  Saving:  5,300LBS
Time  Saving:  18分

00Z  Tokyo  VAAC  Issued  Volcanic  Ash  Diﬀusion  AREA
46E70	
ACTIVE	  	  CLOUD	  AREA	

Initial route[Japan-US Aviation Environmental Workshop 29 November, 2017]4

Overview of DARP operation
Tokyo (HND/NRT)
Honolulu (HNL) ・・・・・ From OCT 2012
Tokyo (HND/NRT)Los Angeles (LAX) ・・・・・ From MAR 2014
Tokyo (NRT)San Francisco (SFO)・・・・・ From NOV 2014
Tokyo (NRT)San Jose (SJC)
・・・・・ From JUN 2015

SFO/SJCHND/NRTLAX
HNL[Japan-US Aviation Environmental Workshop 29 November, 2017]5

Overview of DARP operation
Actual result
The results of the target flight of DARP from October 1, 2012 to August 31, 2017
are as follows.
Target number of flights with DARP available route: 12,422 flights
The number of flights applied DARP: 384 flights (3.1%)
Total Fuel Saving: 376,500LBS
Total CO2 emission reducing: 420 t-CO2
Total Time Saving: 26:50​Transitive graph​ of target flights, execution flights and ​cumulative fuel saving
(lbs)

(便数)

Target	  number	
  of	
  ﬂight	
  Number	
  of	
  ﬂights	
  with	  DARP	
  Start NRT SJCStart HND LAX

Total	
  fuel	  saving	

Start NRT SFO
Start NRT LAX

Start HND HNL(Data: A total of 12,422 flight between 2012.10.1 and 2017.8.31)[Japan-US Aviation Environmental Workshop 29 November, 2017]

6Result (Data by Route)
NRTSFOTTL 58,900lbs/3:52 Savings

NRTSJCTTL 5,800lbs/0:33 Savings
11 DARP / 797 Flights (1.4%)

24 DARP / 1058 Flights (2.3%)(2015.6.25-2017.8.31)(2014.11.1-2017.8.31)

SFO/SJCHND/NRTLAX

HNL
HND/NRT
TTL 219,300lbs/16:10 Savings

HNL

251 DARP / 4348 Flights (5.8%)

HND/NRTLAX
TTL 63,900lbs/3:27 Savings
49 DARP / 2559 Flights (1.9%)(2014.3.1-2017.8.31)(2012.10.1-2017.8.31)

HND/NRT
HNL
TTL 27,800lbs/2:41 Savings
47 DARP / 3589 Flights (1.3%)(2012.10.1-2017.8.31)

D e p a rtu re
A irp o rt

A rriva l
A irp o rtTarget
対象便数
FLTHNLH N D /N R T
H N D /N R T
N RT
N RT

H N D /N R T
HNL
LA X
S FO
S JC

4348
3589
2559
1058
797

Applied
実施便数
DARP
FLT25147492411

実施率
Executing(% (%))
Rate
5 .8 %
1 .3 %
1 .9 %
2 .3 %
1 .4 %TTL
燃料節減量
Fuel Saving(LB S )
2 1 9 ,3 0 0
2 7 ,8 0 0
6 3 ,9 0 05 8 ,9 0 0
5 ,8 0 0

TTL
時間節減量
Time Saving
1 6 :1 0
2 :4 1
3 :2 7
3 :5 2
0 :3 3

1 便当たりのFuel Saving
燃料節減量
per flight(LB S )
874
591
1 ,3 0 4
2 ,4 5 4527

Time りの1 便当た
Saving per
時間節減量
flight0 :0 30 :0 30 :0 4
0 :0 90 :0 3(Data: ​A total of 12,351 flight between 2012.10.1 and 2017.8.31)[Japan-US Aviation Environmental Workshop 29 November, 2017]7

Future prospects
FutureCurrent

SFO/SJCSFO/SJCHND/NRT
HND/NRTLAX
HNLHNLMEX[Japan-US Aviation Environmental Workshop 29 November, 2017]8

To raise DARP implementation rate

ATC⑤Changeclearance(※)
HND/NRT

Complicated Operation
Dispatcher④Request change to ①Get latest weather
forecast datanew route (※)②Optimum routecalculation③Share new routewith Pilot (※)

HNLBlue line：Initial route
Yellow line：Optimum path with new predictive wind(※) All communication by data link

[Japan-US Aviation Environmental Workshop 29 November, 2017]10

L-1011

B727-200

B767-300

A380

B787-9

F-27

YS-11A

B747SR-100

B777-200

A380