ERJ190 loss of control

[EddyBee]

Tony1963 said:

“ don’t think any paperwork was raised for disconnecting the controls so no duplicate/independent inspections were carried out.”

That’s unforgivable. I’d like to read the findings and recommendations for that one.

Top Tip: the RAF really, really isn’t the best, and the MAA is perpetuating the very problems it was supposed to eradicate.

Seems it wasn’t just a rumour batted about in training. It’s crazy to think that happened!
As Eccles correctly pointed out the ailerons weren’t reconnected

https://aviation-safety.net/wikibase/wiki.php?id=5...

[Krikkit]

mcdjl said:

Krikkit said:

Surely if the controls can be reconnected backwards or improperly that's a piece of piss poor design?

Sounds scary as st.

Indeed. At work we make stuff a don't make safety critical stuff but have learnt to make each connector unique and in addition cables connect in one direction only if possible. It just makes setting stuff up easier!

Exactly what I was thinking! Handed electrical connectors, colour coded and specific length wires etc.

Couple that with two failures to check it afterwards (maintenance and flight crew) and clearly you're on for a wild ride. Luckily it didn't end as badly add the one above for the RAF chap, clearly a cursed flier.

[eccles]

Smiljan said:

From the pprune thread, above photo supposedly from the aircraft after the incident. The control wheel is full right, left aileron as arrowed showing full up, right aileron full down. Ailerons should be the other way around.

Right wing spoilers are up, as they should be.

Ailerons are cable operated servos on these, someone has made a huge mistake and the crew failed to properly carry out their control checks pre-flight.

Very, very fortunate it didn't pile on shortly after leaving the ground.

I've see aileron controls connected incorrectly on a C130.
The control yokes have a chain and sprocket affair to connect to the rest of the controls, and the cables running from those chains go down the centre of the hollow control column. During rebuild the wires got crossed on one side,inside the column, so instead of both control yokes going the same way during functions, they went opposite ways!
Luckily it was found during functions, but after it had been inspected.

[Tony1963]

“Luckily it was found during functions”

I’d leave out the word “luckily”. That’s exactly what functional checks, and then independent checks, are for.

Any organisation or individual that condones avoiding them where they’re required should be considering employment elsewhere.

[EddyBee]

Looks like the aileron cables were cross connected after a modification was carried out to the cable routing:


https://aviation-safety.net/database/record.php?id...

Seems they did get a “flight control no dispatch” message, I wonder how they managed to clear it for the test flight?

Shocking it wasn’t noticed after 11 days of troubleshooting!

Edited by EddyBee on Thursday 20th June 06:12

[red_slr]

Thanks for the update, crazy stuff.