Hi.. I don't know whether you are missing anything Dave. The passing waypoint altitudes are calculated by the programme that creates the flight plans (Little Navmap).
I am mystified though by the fact you say that the altitude at EBSAK is 8000'. Not according to my flight plan:
I
3 version
1
7
1 FKKD 33.000000 4.012351 9.724827
2 DE 6402.153320 3.790767 10.138056
11 INODO 13000.000000 3.760000 10.816667
11 EBSAK 13000.000000 3.745261 11.136567
11 BOSKI 8458.960938 4.033333 11.523139
11 CI19 6253.828125 3.932405 11.590114
11 FI19 4636.937012 3.844980 11.574798
1 FKYS 2276.000000 3.717325 11.552436
The .pln format which PF3 accepts does not list altitudes at all for waypoints. This is the plan that PF3 is reading (it was probably in the log file??). Does this help explain? Nothing in the a/c or my flight plan shows that I should be at 8000' at EBSAK! WP39 only exists in the PF3 pln file by the way - I added it specifically to the PF3 plan as an 'extra' one to read, as I mentioned above, in the hope that PF3 would not descend too soon. But that clearly didn't work.
I can send another log next time if another example would help. Be really good to find a way to sort this
Thanks!
<?xml version="1.0" encoding="UTF-8"?>
<SimBase.Document Type="AceXML" version="1,0">
<Descr>AceXML Document</Descr>
<!-- LNMDATA
_lnm=Created by Little Navmap Version 2.4.5 (revision 0bde498) on 2020 08 24T13:50:26|
aircraftperffile=D:/XP11 Utilities/Aircraft Fuel Performance Files/Embraer E145.lnmperf|
aircraftperfname=E45|
aircraftperftype=E145|
cycle=2008|
navdata=NAVIGRAPH|
simdata=XP11
-->
<FlightPlan.FlightPlan>
<Title>FKKD to FKYS</Title>
<FPType>IFR</FPType>
<CruisingAlt>13000</CruisingAlt>
<DepartureID>FKKD</DepartureID>
<DepartureLLA>N4° 0' 42.69",E9° 42' 28.81",+000033.00</DepartureLLA>
<DestinationID>FKYS</DestinationID>
<DestinationLLA>N3° 43' 2.37",E11° 33' 8.77",+002276.00</DestinationLLA>
<Descr>FKKD, FKYS</Descr>
<DeparturePosition>12</DeparturePosition>
<DepartureName>Douala</DepartureName>
<DestinationName>Yaounde Nsimalen</DestinationName>
<AppVersion>
<AppVersionMajor>10</AppVersionMajor>
<AppVersionBuild>61472</AppVersionBuild>
</AppVersion>
<ATCWaypoint id="FKKD">
<ATCWaypointType>Airport</ATCWaypointType>
<WorldPosition>N4° 0' 44.46",E9° 43' 29.38",+000033.00</WorldPosition>
<ICAO>
<ICAOIdent>FKKD</ICAOIdent>
</ICAO>
</ATCWaypoint>
<ATCWaypoint id="DE">
<ATCWaypointType>NDB</ATCWaypointType>
<WorldPosition>N3° 47' 26.76",E10° 8' 17.00",+000000.00</WorldPosition>
<ICAO>
<ICAORegion>FK</ICAORegion>
<ICAOIdent>DE</ICAOIdent>
</ICAO>
</ATCWaypoint>
<ATCWaypoint id="WP39">
<ATCWaypointType>User</ATCWaypointType>
<WorldPosition>N3° 46' 10.95",E10° 35' 15.40",+000000.00</WorldPosition>
</ATCWaypoint>
<ATCWaypoint id="EBSAK">
<ATCWaypointType>Intersection</ATCWaypointType>
<WorldPosition>N3° 44' 42.94",E11° 8' 11.64",+000000.00</WorldPosition>
<ICAO>
<ICAORegion>FK</ICAORegion>
<ICAOIdent>EBSAK</ICAOIdent>
</ICAO>
</ATCWaypoint>
<ATCWaypoint id="FKYS">
<ATCWaypointType>Airport</ATCWaypointType>
<WorldPosition>N3° 43' 2.37",E11° 33' 8.77",+002276.00</WorldPosition>
<ICAO>
<ICAOIdent>FKYS</ICAOIdent>
</ICAO>
</ATCWaypoint>
</FlightPlan.FlightPlan>
</SimBase.Document>