Issue on Odd/Even Cruise Level Assignment with Plan Stepclimb Active

SimBrief Dispatch
1

I plan for an eastbound which of course should be flown on odd cruise level. However, along the route, suddenly SimBrief give me an even cruise level as shown here:

WITT/17 N0489F350 OPUN1G OPUNG W12 ISVUR L762 MIBEL/N0493F340 L762 ASUNA/N0492F350 R469 BOBAG M630 JUNHA M774 OBDOS L504 OSRUT W36 DOMKI/N0485F370 W36 MIL W41 KUBIA KUBI2B WAJJ/30

As you can see, SimBrief gave me a step descent from FL350 to FL340 for airway L762 from MIBEL to ASUNA. This shouldn’t happen because as you can see on screenshot below:

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MIBEL to ASUNA should be flown on odd flight level. This is taken straight from eAIP of Indonesia.

Christo

2

Hi, SimBrief is reading the AIRAC correctly. It may be a mistake in the AIRAC data itself, we will reach out to our provider.

Best regards,

3

I’m not sure if I’m doing something wrong or overlooked something but I’m facing the same issue, I’m unsure why simbrief is giving me odd initial cruise altitude and step climbs when I’m flying west. I’ve been experiencing this lately with a few flights, and it’s true for flights flying east as well (flight levels are even or the step climbs are even).

4

Attaching a few screenshots:

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Screenshot_20250505_233619_Chrome
Screenshot_20250505_233619_Chrome1080×2340 434 KB

5

Olaf clarified this on discord, I’m sorry for posting this here. I wasn’t aware that this is due to NAT HLA not using semi circular rules and France being even for north and odd for south.

6

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