Tez Jet Avro RJ uncontained engine failure - March 2018
 

Haven't seen any mention of this yet. Has this happened before on the RJ/146 family?
Tez Jet Avro RJ85 suffers Uncontained engine failure ? News In Flight
Video (on Dutch site):
https://www.nu.nl/230645/video/passa...tploffing.html

It made the tabloids a couple of days ago.

Despite being described as an "uncontained failure" on Avherald and elsewhere, it doesn't look as if any parts exited tangentially, which is the accepted definition of one.

So why is the rear end of the engine separated from the front and hanging down in the photo?

Well it didn't completely separate, otherwise we wouldn't be looking at photos of it hanging off. :O

Joking aside, bits that are spat out of the rear of an engine aren't considered to be "uncontained". That term is reserved for bits that come out sideways, which have much more potential to ruin your entire day.

The jet pipe for the core of the engine is a lightweight thing, held on by a few toggle latches. Turbine parts have come out of it, looking at it, but it is not an uncontained failure withing the proper engine section itself IMHO.

If it is an RJ85 it has ALF 507 engines.

Or, if we're in picky mode, LF507.

The "A" (for Avco) disappeared with the ALF502.

Shucks. I see lots of torn metal around the circumference, surely this is ahead of the tailpipe.

Certainly looks like an uncontained turbine failure to me - based on the picture I'd say a turbine disc let go.

I agree that it may have just missed the official definition of 'uncontained', but I would argue that there's a bit too much twisted metal at the end of the cold stream duct and around the tailpipe. In my view, something flew out that had at least a tangential component to its path. Anyway, I cannot recall many incidents like this on the 146/RJ fleet, which is why it triggered my interest.

Looks to me like the 4th turbine rotor has departed the engine.....its a part that is replaceable on wing....and not the first time a liberation has happened. I suspect it came out whole rather than in fragments as the damage to the cowlings is so neat.

I did a bit more research and found a few examples of engine problems in this fleet. Somehow I must have missed these during an earlier search. Thanks for the information everyone!

hmmm yes they were a bit famous for spitting pieces, particularly the earlier 502 series engines, BAE stood for "blew another engine"...

That's just a fairing to continue the profile of the engine cowls. The actual jetpipe is heavier and attached by a ring of bolts and nuts.

I do know of one BAe 146 that flew back to base after heavy maintenance with all four fairings stowed in the cargo bay. No damage apart from red faces.

Over the years there have been examples of this engine spitting parts from all three major stages. Early days were N1 blades (high mass high energy), latterly a spate of N2 shreds, often taking out the adjacent engine.
No doubt AD's were produced to reduce further risk, but this looks like the back end and I have not seen this before on any of the ALF/LF series.
Guess if you abuse something for long enough it will eventually fail.

So who did the preflight walk-around?

When something so obvious is missing, it is easy to miss it - you just don't miss what is missing.

Obviously the captain or FO ;)

As Dufo said, when something is so obvious, its easy to miss. I suppose if only one was missing then it would be easier to spot but all four........?

I beg to differ, there is plenty of metal bent outward.

99 pax on a RJ85?