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Flight plan format Q

In recent times, Autorouter has been generating extra fields in flight plans e.g.

(FPL-N113AC-ZG
-TB20/L
-SYLDFGOR/S
-LEMH0900
-N0152F100 SARGO DCT VERSO DCT BGR A27 ABIXO A27 KANIG/N0152F100 IFR A27 PPG G36 LMG DCT ADABI DCT GINON J55 LUTIL DCT OBATO DCT DIDAK DCT ATGAL DCT BAGEK/N0150F080 DCT NEVIL DCT DRAKE
-EGKA0428 EGKB EGMD
-DOF/180330 EET/BGR0102 KANIG0105 ABIXO0111 RMK/CREW CONTACT +44xxxxxxxx TOW:1135 TAXI:10 PBN/B2
-E/0648 P/002 R/VE S/M J/LF D/01 004 C ORANGE A/WHITE BLUE STRIPES C/XXXX)

but removing them still validates:

(FPL-N113AC-ZG
-TB20/L
-SYLDFGOR/S
-LEMH0900
-N0152F100 SARGO DCT VERSO DCT BGR A27 ABIXO A27 KANIG/N0152F100 IFR A27 PPG G36 LMG DCT ADABI DCT GINON J55 LUTIL DCT OBATO DCT DIDAK DCT ATGAL DCT BAGEK/N0150F080 DCT NEVIL DCT DRAKE
-EGKA0428 EGKB EGMD
-DOF/180330 EET/BGR0102 RMK/CREW CONTACT +44xxxxxxxx PBN/B2
-E/0648 P/002 R/VE S/M J/LF D/01 004 C ORANGE A/WHITE BLUE STRIPES C/XXXX)

Is there any issue in leaving them out when filing?

Administrator
Shoreham EGKA, United Kingdom

I recall having seen the TOW and TAXI figures in Autorouter flight plans for a long time. They’re used by Eurocontrol to improve their airspace usage predictions and are not mandatory.

KANIG is both a FIR boundary and your IFR pick-up point, so it makes some sense to include an EET for it. Why you need EET for BGR and ABIXO, I can’t say. Also it is strange that the EET for ABIXO is later than that for KANIG even though KANIG is after ABIXO in you flight plan! Did you do any manual editing of the text?

ESKC (Uppsala/Sundbro), Sweden

Very good point about my example being a Z flight plan… If the EET/BGR0102 is removed, it doesn’t validate.

The 1st one is not edited. The 2nd one is edited to remove the bold stuff in the 1st one. I pasted them both into a validation website afterwards.

Administrator
Shoreham EGKA, United Kingdom

Here’s an “I” flight plan

(FPL-N113AC-IG
-TB20/L
-SYLDFGOR/S
-EGKA1850
-N0150F080 SFD Y803 DVR L9 KONAN/N0152F100 L607 ARCKY/N0151F090 L607 SUXIM DCT AGBUL DCT OLIVI DCT MND DCT OKIBA DCT ABTAL/N0152F100 L173 RIXED DCT WLD DCT DMS DCT TRAUN/N0150F120 DCT PEREX DCT SABAD/N0152F100 L862 OKLAX/N0150F080 L862 SPL SPL5N
-LDSB0542
-DOF/180329 RMK/CREW CONTACT +44xxxxxxxxxx TOW:1134 TOC:D14F080T0008 BOC:D94F080T0037 TOC:D99F100T0039 TOD:D262F100T0140 BOD:D265F090T0141 BOC:D440F090T0248 TOC:D443F100T0250 BOC:D553F100T0328 TOC:D560F120T0332 TOD:D733F120T0442 BOD:D738F100T0444 TOD:D842F100T0525 BOD:D847F080T0527 TOD:D874F080T0538 BOD:D880F080T0540 TOD:D881F080T0540 DAL:D867PTSPL DAL:D887ADLDSB TAXI:10 PBN/B2
-E/0648 P/TBN R/VE S/M J/LF D/01 004 C ORANGE A/WHITE BLUE STRIPES C/xxxxx)

which validates, as does the one with all the extras removed

(FPL-N113AC-IG
-TB20/L
-SYLDFGOR/S
-EGKA1850
-N0150F080 SFD Y803 DVR L9 KONAN/N0152F100 L607 ARCKY/N0151F090 L607 SUXIM DCT AGBUL DCT OLIVI DCT MND DCT OKIBA DCT ABTAL/N0152F100 L173 RIXED DCT WLD DCT DMS DCT TRAUN/N0150F120 DCT PEREX DCT SABAD/N0152F100 L862 OKLAX/N0150F080 L862 SPL SPL5N
-LDSB0542
-DOF/180329 RMK/CREW CONTACT +44xxxxxxxxxx PBN/B2
-E/0648 P/TBN R/VE S/M J/LF D/01 004 C ORANGE A/WHITE BLUE STRIPES C/xxxxx)

One has to ask: what is the extra data actually used for, if the flight plan validates without it and you can thus depart on it?

Administrator
Shoreham EGKA, United Kingdom

Peter wrote:

One has to ask: what is the extra data actually used for, if the flight plan validates without it and you can thus depart on it?

It improves the prediction of your 4D flight path that the Eurocontrol computers do.

Last Edited by Airborne_Again at 30 Mar 06:28
ESKC (Uppsala/Sundbro), Sweden

OK, but what does it do that’s actually useful?

Administrator
Shoreham EGKA, United Kingdom

It helps with flow planning for the various ATC sectors. In simple terms, the system can predict sector loading and, in the future, present alternative routes (during the FPL Validation phase) if it is predicted a sector will be overloaded.

Fly safely
Various UK. Operate throughout Europe and Middle East, United Kingdom

Another interesting thing:

I have been playing with the EET, 0542 above, and the flight plan validates for values in the range 0415 to 0950. So they allow EET from 0.75 of 0542 to 1.7 of 0542. That is quite interesting, especially the latter one which is huge.

Where the 0542 comes from? It is the aircraft perf model you created in the Autorouter. Eurocontrol have their own (confidential) model for each aircraft type and maybe the assymetry in the above latitude suggests that their own model is a lot slower than the one I created. Or it could just be they allow people to fly a lot slower than nominal.

Administrator
Shoreham EGKA, United Kingdom

I guess EET is calculated from model you defined in autorouter, compensated for forecasted wind and validated against Eurocontrol range for specified type. Of course range has to be wide to allow slower/faster travel depending on power settings and actual wind. I fail to see some magic in there

LDZA LDVA, Croatia

Yes; I posted that since some may find it useful if filing flight plans manually via some service such as EuroFPL which doesn’t constrain you to an aircraft performance model. One should always have a backup and test it regularly

Administrator
Shoreham EGKA, United Kingdom
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