Explodes at start of taxi

[Blaze1969]

Not sure what else to say other than when I try to taxi at Paphos AB Syria ( have not tried others) the jet shutters gear collapse or explodes after adding power and starting to taxi, It's frustrating.

[Blaze1969]

User error, looks like it's tied to control locks they need to be released or it will occur. Perhaps a bit drastic but posted in case others have same occurance.

[McRuffen]

I've had the aircraft randomly "hit invisible bumps" during taxiing, causing just minor bumping, nose gear damage or even complete explosion of the aircraft, without the control lock on. It has happened at many different airports, and also after landing. It just seems to be randomly happening.

[6S.Duke]

Please share your track and mission. Thank you

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[Tusky]

hace 2 horas, McRuffen dijo:

I've had the aircraft randomly "hit invisible bumps" during taxiing, causing just minor bumping, nose gear damage or even complete explosion of the aircraft, without the control lock on. It has happened at many different airports, and also after landing. It just seems to be randomly happening.

Explosion after landing happened to me, too:
1) I could not enable the NWS (this seems to be an issue) and I slowly drifted to the right of the runway when below rudder authority speed
2) I exploded once I stopped using the brakes (I might have had the right main landing gear outside the runway)

Edited October 30, 2022 by Tusky

[Bremspropeller]

9 minutes ago, Tusky said:

1) I could not enable the NWS (this seems to be an issue) and I slowly drifted to the right of the runway when below rudder authority speed

The NWS happens when (even slightly) overspeeding the gear and when hitting one of those famous DCS runway-bumps. All of that happened to me as well. I even had NWS break on me on lgd rollout. Had to use NWS, because the rudder is useless in any kind of crosswind when below touchdown speed.

[Burning_Daylight]

No, it's not user error. I've had it explode a multitude of times with control lock disengaged. Several times it was at the beginning of taxi, and at least twice it was while taxiing very slowly. And I mean VERY slowly. One time it was just as I was turning on the runway from a complete stop. Moved about a foot before the explosion, so didn't even have time to go fast. Most of the time I get that heavy breathing effect before the screen goes dark...and then: blammo.

As someone else suggested, I think it's hitting invisible bumps. But...it could also be a combination of hitting invisible bumps and a sync issue because it's only happened to me online, and so far only on the Syria and Marianas maps.

I don't have any tracks because it's only happened online and I don't record or save online missions. But, if you want to see for yourself, you can go into the TTI Syria server, select the MB339, start her up, and...see what happens.

Edited October 30, 2022 by Burning_Daylight

[Gideon312]

I experienced the same problem in our server. Exploded during the first few meters of taxiing out.

[Vettefan]

Same here: Exploded within the first meters during takeoff at night on Nevada map (random, dynamic cyclone weather). Turned wind off (static weather preset) and that solved it somehow for me while keeping all the rest as-is

[McRuffen]

Here's a track file. Starting at parking space 24 at Mineralnye Vody - I've attached the mission file as well. I've tried taxiing straight ahead to the taxiway and then to the right, out to RWY 30 twice, and both times the pilot experiences random blackouts and then at some point the aircraft explodes. When i replayed the track the plane didn't explode at the end, just had a nosegear collapse, but when I played it live, the entire plane exploded. But the random nose gear jitters and blackouts are there in the replay, at least on my computer.

I hope this helps with the debug, because I love flying this plane when I can get it off the ground!

MB339 random taxi problems.trk Caucasus Test.miz

Edited October 30, 2022 by McRuffen

[richskinns]

Same issue exploding when cold start from any Cyprus airfield- also collapsing front undercarriage, after initial taxi  

[Otto pallen]

mmmh the same for me too, in Caucasus map, Sochi Airport and Kutaisi AFB

[gulredrel]

Kobuleti... dipped a bit through a bump in ramp area and exploded... todays patch DCS/2.8.0.32235

[6S.Duke]

Please share your mission so we can reproduce the issue

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[gulredrel]

Was able to reproduce the issue. Please find mission and track file attached.

My taxi path to explosion:

Hope this helps.

Thanks

Jens

MB-339_kobuleti_explode_while_taxiing.trk MB-339_Kobuleti_target_practice.miz

[Automan]

Unfortunately seems that the some of latest changes we made, including static force and damping of nosewheel improvements, were kept out by the update of today.
We hope to find a window for release the fixes again as soon as possible.

[6S.Duke]

Was able to reproduce the issue. Please find mission and track file attached.
My taxi path to explosion:

Hope this helps.
Thanks
Jens
MB-339_kobuleti_explode_while_taxiing.trk MB-339_Kobuleti_target_practice.miz

Thank you!

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[gulredrel]

Just did a short flight in current OB 2.8.0.32937.

I did not explode, but experienced blacking out at almost the same spot as shown in the picture above while taxiing back to parking. Don't know if touch down was too hard, but don't think so. I did hard braking, that's true, but even if the gear would be damanged, you should not black out taxiing below 10 knots going over a bump.  

MB-339_20221117_Kob_taxi_blackout.trk

[richskinns]

Seems a common issue (exploding/and blackout issues) for me across the Syria map airfields on commencing taxiing. 

I haven't experienced it in other maps though.

[gulredrel]

I think as Caucasus was the first map and doesn't have as much bumps and slopes on taxiways as Syria or other newer maps which will be more accurate in this regard.

[granspeed]

Same Issue in SA as well.  See attached trk and miz files.

I had several explosions as well but could not replicate it when tryin to save a track file.

SA_Cinematic_MB339.miz SA_MB339_Invisible_Taxi_Bump.trk SA_MB339_Invisible_Taxi_Bumps2.trk

[Gianky]

It happened to me yesterday online: Georgia at war server, just started taxi out of my stand, turning on the taxiway the nose took a dive and I exploded (in game it was just a big boom, only watching the Tacview track I could see the nose diving inside the concrete).

I should have the track saved, if you guys want it, but it's a long one (24 minutes before the incident) and I'm not sure it's gonna be useful. Let me know.

By the way, may I ask if you made any progress in identifying the cause?

EDIT: I forgot to add, it never happened to me offline in Caucasus (IIRC is the only map in which I used the 339, for now), I played all the training missions, all the campaign and some custom made mission (always starting in Batumi, in these ones).

Edited November 29, 2022 by Gianky

[Wacko_ZA]

So this happened to me on Syria today. Bought the module yesterday.
I am completely unable to taxi it after a cold start. 
Only way to fly it is if i take off hot from the runway.

Is there any feedback @Indiafoxtecho?

[gulredrel]

We are all waiting for the patch to arrive. Currently Caucasus and Nevada are relatively save for me. But there are some circumstances I still don't understand, when it is happening.

For me the possibility of getting the issue increases when: non-solo, heavy loaded, wobbling the stick with control lock on before taxiing, heavy breaking...

[Hiob]

15 minutes ago, Wacko_ZA said:

So this happened to me on Syria today. Bought the module yesterday.
I am completely unable to taxi it after a cold start. 
Only way to fly it is if i take off hot from the runway.

Is there any feedback @Indiafoxtecho?

It is known and a possible repair is coming with the next patch. (If I understood correctly, they adressed it but are not 100% sure they found the culprit yet)

As far as I can tell, it is occuring in pretty random circumstances. Perhaps a bit more in multiplayer than in solo.....

In the meantime, take off from another slot and try your luck or start in the air.