FlightDetent
31st Jan 2004, 08:08
Just in case someone might be interested..., taken from here (http://www.eurocontrol.int/aisagora/index.htm).
IFPU2, Ost (EUROCONTROL) posted a new message concerning
Country: Unspecified
Cycle: 2004-JAN-22
Document Type: ICAO Documents
Aeronautical Information Type: Flight Planning
EUROCONTROL has contacted the European and North Atlantic Office of ICAO, Paris with regards to the rules pertaining to the ICAO flight plan form, Item 15: Route, Change of speed or level (ICAO Doc 4444 - ATM/501 refers).
After conferring with ICAO Headquarters, ICAO-Paris has informed that the correct interpretation of this provision is that a change in level is to be initiated at the point indicated in the Item 15 of the filed flight plan.
CFMU systems (IFPS and ETFMS) calculate aircraft trajectories in line with the ICAO interpretation. At the same time it is recognised that a number of aircraft operator flight planning systems do not interpret speed level change information in accordance with the ICAO interpretation. This can give rise to FPLs being referred for manual processing in IFPS (or rejected by IFPUV) where a FPL indicates a change of level at a point from which a RAD level restriction applies. In order to ensure that the restriction is fully respected (and thus ensure automatic processing by IFPS) flight plan originators need to submit FPLs that adhere to the ICAO interpretation of a speed and level change.
Cheers,
F.D.
IFPU2, Ost (EUROCONTROL) posted a new message concerning
Country: Unspecified
Cycle: 2004-JAN-22
Document Type: ICAO Documents
Aeronautical Information Type: Flight Planning
EUROCONTROL has contacted the European and North Atlantic Office of ICAO, Paris with regards to the rules pertaining to the ICAO flight plan form, Item 15: Route, Change of speed or level (ICAO Doc 4444 - ATM/501 refers).
After conferring with ICAO Headquarters, ICAO-Paris has informed that the correct interpretation of this provision is that a change in level is to be initiated at the point indicated in the Item 15 of the filed flight plan.
CFMU systems (IFPS and ETFMS) calculate aircraft trajectories in line with the ICAO interpretation. At the same time it is recognised that a number of aircraft operator flight planning systems do not interpret speed level change information in accordance with the ICAO interpretation. This can give rise to FPLs being referred for manual processing in IFPS (or rejected by IFPUV) where a FPL indicates a change of level at a point from which a RAD level restriction applies. In order to ensure that the restriction is fully respected (and thus ensure automatic processing by IFPS) flight plan originators need to submit FPLs that adhere to the ICAO interpretation of a speed and level change.
Cheers,
F.D.