Cessna 408 SkyCourier - Engines can't be started with open intertial separators

User Support Hub Aircraft & Systems
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ISSUE DESCRIPTION

Description of the issue:
With the release of SU it is no longer possible to start the C408’s engines with their inertial separators open (respectively in MAIN instead of STBY, as the OFF position of the sep’s switches are still INOP).

If applicable, which aircraft is experiencing this issue:
Carenado Cessna 408 SkyCourier - all variants

[PC Only] Did you remove all your community mods/add-ons? If yes, are you still experiencing the issue?
No difference.

FREQUENCY OF ISSUE

How often does this occur for you (Example: Just once, every time on sim load, intermittently)?
Always, since the public release of SU1

REPRODUCTION STEPS

Please list clear steps you took in order to help our test team reproduce the same issue:

  1. Load into the C408, switch battery into ON, push prop levers forward.
  2. Switch any engine’s inertial separator to MAIN
  3. Actibvate that engine’s starter and push its condition lever into RUN
  4. Observe as even at max motoring (~18% NG) the engine does not indicate any fuel flow, does not ignite, does not start

YOUR SETTINGS

NA

MEDIA

Please add a screenshot or video of the issue occurring.
Right engine starter START, condtion RUN, inertial sep MAIN, NG at 18% - no no fuel flow, no ignition, no start

1920×1200 161 KB

Same situation, but with inertial sep swtiched to STBY - fuel flow appears, engine starts and spools up as expected

1920×1200 162 KB

[END OF FIRST USER REPORT]

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Do you have the same issue if you follow the OP’s steps to reproduce it?
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Provide extra information to complete the original description of the issue:
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If relevant, provide additional screenshots/video:
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2

I cannot replicate this, the 408 starts normally for me with the separators in service.

3

Thank you for this report. We’ve moved your topic into the User Support Hub.

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4

In the photos you posted your auto ignitions are off

Edit: I do see what you’re saying though. But make sure the plane is configured to start and try again… Just trying to eliminate any variables

5

Are there supposed to be duplicate CAS messages? If not, that tells me there are other issues that might be in play.

6

Auto-ignition is part of the ice-protection system and not used for normal engine startup, as per the statements of a RL 408 pilot in the forums here.

That said, the Carenado 408 is far from a faithfull recreation of the real thing and so I just tried this again with activated auto-ignition. And the result is exactly the same: the engine does not start as long as the inertial separator is in MAIN.

The only way to get the engine to start with the intertial sep open seems to be the pre-SU1 procedure where you hacve to activate the fuel boost. Which, as far as I know, isn’t part of normal startup procedures either, nor is it part of the checklist delivered to us with the airplane.

No, they are not supposed to be there, but have been since long before the SU1 update. Just one of the many bugs and problems (not to mention inaccuracies) with this airplane.

2 Likes
7

Auto ignition is not required for a normal start. Ignition for start is controlled by the starter switch itself in the 408.

3 Likes
8

Fair enough - I’ve avoided flying it, mostly because the typical mission length, and partially because I know it’s buggy and I’ve tried my best to not introduce myself to overly buggy aircraft until they’re fixed.

1 Like