skip link


HMU Status and Monitoring Process



HMU Status Information


HMU Operating Status   Remarks
Setouchi HMU
(Shodo DME Site)
343044N 1341627E
In Service (1)13:30 - 21:00 UTC (5-August-2016)  
(2)13:30 - 21:00 UTC (8-August-2016) 
(3)13:10 - 15:10 UTC (25-August-2016) 
During this period, Setouchi HMU is out of service due to maintenance.

Niigata HMU

375807N 1385205E

In Service
Sendai HMU
380903N 1403942E

In Service (1)15:10 - 17:10 UTC (24-August-2016)  
(2)15:00 - 16:30 UTC (6-September-2016) 
(3)13:00 - 17:00 UTC (7-September-2016) 
During this period, Sendai HMU is out of service due to maintenance.



Monitoring Process

  • - flights within the horizontal coverage
  • - flights between Flight Level 290 and 410 inclusive

Coverage

Name of HMU Setouchi Niigata Sendai
Coverage Chart
(Click for large one)
Remarks Within the radius of 40 NM from the HMU (refer to the above as to the coordinates of the HMU).
Within the radius of 30 NM from the HMU (refer to the above as to the coordinates of the HMU). Within the radius of 30 NM from the HMU (refer to the above as to the coordinates of the HMU).

Coordination of the flight to receive the height monitoring service

For flight planning to receive the height monitoring service, prior coordination should be made with the Monitoring Flight Desk.

Monitoring Hours

(Usual flight operation)
No special procedure is required by the operator. All the HMUs measure automatically every overflight within its coverage in 24H and 7 days basis except periodic maintenance and unexpected technical problems. Check the HMU Status Information as shown above.

Course and Flight Level

At least 20NM straight and level flight within the coverage is required. Pilots should not solicit a haphazard height monitoring in flight due to an impact on ATC workload. Pre-coordination for a height monitoring should be addressed to the Air Traffic Management Center as shown below.


Result


The summary of the successful measurement results will be shown in the "Reports" page of this web site in about 4 weeks.

Note


  • By flying over either Setouchi, Niigata or Sendai HMU at RVSM flight level band, the height monitoring is conducted automatically for height keeping accuracy to be measured.

  • In an adverse weather condition, there may be a case where the measuring accuracy may not be accurate enough hence nullifying the measurement result.

  • Separation setting has precedence and, if necessary, altitude change and/or changing flight direction may be instructed, thus cancelling the measurement.

For further information

  • If you have any questions about height monitoring, please contact to the e-mail address or phone number.

<JASMA desk>
Flight Procedures and Airspace Program Office,
Air Navigation Services Department, Civil Aviation Bureau
E-mail: RVSM_report@mlit.go.jp
TEL: +81-3-5253-8750
FAX: +81-3-5253- 1664

  • If you would like to consult about a tailored flight plan for height monitoring, please contact to the e-mail address or phone number below at least five (5) weekdays prior to requesting monitoring date.


<Monitoring flight desk>
Air Traffic Management Center

E-mail: atmc_HMUroute@cab.mlit.go.jp
TEL: +81-92-608-8869
FAX: +81-92-608-8880


Copyright(C) 2011 JapanAirspace Safety Monitoring Agency. All Rights Reserved.