Effective time to change to new Navdata
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Effective time to change to new Navdata
I was recently told by a company check airman that CAAC uses midnight Beijing time as the changeover point between 28 day FMC navdata updates. I looked in the Chinese AIP and could not find any information about this. Can anyone confirm that this is the correct procedure in China?
Only half a speed-brake
On a common FMS the machine internal clock does not play a role. What is loaded is what you see. Technically, if CAAC decides their roll-over moment is 0000 PEK time, that's how the databases shall be rotated.
It does not make any sense in the international context. One way to figure it out would be to find the ICAO Annex on AIRAC cycle, and see if PRC applied for a variation on the change-over time.
It does not make any sense in the international context. One way to figure it out would be to find the ICAO Annex on AIRAC cycle, and see if PRC applied for a variation on the change-over time.
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Since most of our fleet is not GPS-equipped, the FMC has nothing to reference for time. Most of the FMC’s are set to PEK time, not UTC. Thanks for the suggestion, but I was hoping someone here could cite a definitive document (like the AIP) with an answer.
Only half a speed-brake
ICAO Annex 15 4.3.4 - Specification for AIP Amendments explains that if other than 0000UTC is used, the valid from time shall be specified on the cover-sheet.So all you need is to get your hands on AIP SUP P.R.C.
Only half a speed-brake
1600 UTC is EFF, and PEK is +8. (static picture 3 years old)
The TRIGGER NOTAMS are all issued also with EFF 1600 UTC.
https://www.aischina.com/EN/SecondLi...52BCA1F612DBFA
Case closed?
