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-   -   Helicentre crash (https://www.pprune.org/rotorheads/659305-helicentre-crash.html)

XR518 18th May 2024 07:20

Helicentre crash
 
Anyone have details on the Helicentre AW109 crash at Oxford yesterday?

helimutt 20th May 2024 08:56

Don't quote me because this is, after all, a rumour network. Training accident. Instructor unable to recover a student mistake in time. Hard landing removing the nose wheel from 109S. Aircraft had only apparently been purchased a couple weeks before, which is a real shame. The aircraft was a well maintained well looked after 109.

https://cimg7.ibsrv.net/gimg/pprune....ede1fbf632.jpg
https://cimg8.ibsrv.net/gimg/pprune....8bc4cd32ed.jpg

[email protected] 20th May 2024 10:29

Can't think I'd be doing running landings to a grass field in one of those.

gipsymagpie 20th May 2024 15:41

I reckon a reject from a engine failure pre-TDP and the student lowered the lever then moved the cyclic forward rather than the other way around. I had this mistake demonstrated to me once and you have to be quick to recover it as an instructor - a fortunate demonstration as someone did it to me later.

PPRuNeUser469990 20th May 2024 17:38

What is an FOM?

Bravo73 20th May 2024 18:31


Originally Posted by hargreaves99 (Post 11659337)
What is an FOM?

Why would you ask? :}:E

helicrazi 20th May 2024 18:55


Originally Posted by hargreaves99 (Post 11659337)
What is an FOM?

Flight Ops Manager, usually the NP FO

farsouth 20th May 2024 19:31


Originally Posted by Bravo73 (Post 11659383)
Why would you ask? :}:E

Because another previous post, since removed, used the term without clarifying what it stood for.

ShyTorque 20th May 2024 20:35

That looks like a minor bump but could be a very expensive repair. The floor structure on a 109 adjacent to the nose-wheel is not the strongest design.

highrpm 20th May 2024 22:32


Originally Posted by helimutt (Post 11658982)

Seen that look before…

https://cimg5.ibsrv.net/gimg/pprune....50524293b.jpeg

ShyTorque 21st May 2024 08:14


Originally Posted by gipsymagpie (Post 11659269)
I reckon a reject from a engine failure pre-TDP and the student lowered the lever then moved the cyclic forward rather than the other way around. I had this mistake demonstrated to me once and you have to be quick to recover it as an instructor - a fortunate demonstration as someone did it to me later.

People do strange things when you sit them in a helicopter and give them two sticks to hold. The only time in my flying career where I was involved in an aircraft damage incident was during an EOL landing in a Gazelle. My student did a very nice autorotation but instead of raising the collective to cushion the touchdown he pulled back hard on the cyclic. Thankfully it only resulted in the requirement for a new frangible skid. Even more fortunate was that 20 minutes later my new squadron boss Cat 3’d his Gazelle just 200 yards away and I gave him a lift back to base! :ok:

B87 22nd May 2024 12:32

The rumour I heard was a practice auto to hover recovery, which was made somewhat harder as the throttles were left at idle...

ShyTorque 22nd May 2024 14:14

Oops! Nearly had that happen to me in a Puma HC1. Part of a pilot’s IF check was an entry into autorotation after a double throttle pull. My student, in the right seat, didn’t do very well. He let the Nr drop so low that the alternators tripped off line and the autopilot disconnected as advertised. I had to take control from the resultant, horrendous “UP” he got himself into. As I rolled the aircraft level at about 300 feet agl I heard a single “Beep” from the low Nr warning system. I looked around to confirm that the crewman (who had the responsibility of advancing the throttles) was in the jump seat and was advancing them, only to see his seat empty - he’d strapped into his crash position! The HC1’s Turmo IIIC4 engines’ very poor response from idle was legendary….

My one word, very vulgar response was followed by my right hand and both of the crewman’s hands very rapidly pushing the throttles forwards. We thankfully flew away at around 100’ agl, all of us having learned valuable lessons!

Sofatacos 22nd May 2024 17:15


Originally Posted by B87 (Post 11660668)
The rumour I heard was a practice auto to hover recovery, which was made somewhat harder as the throttles were left at idle...

If this is the case it’s not the first time that sort of incident has happened under Helicentre training, you’d think after having had that issue in a G2 they might have put in some further training or safeguard for the FI’s regarding throttle awareness…

gipsymagpie 22nd May 2024 21:14


Originally Posted by B87 (Post 11660668)
The rumour I heard was a practice auto to hover recovery, which was made somewhat harder as the throttles were left at idle...

Double idle PFL are particularly dangerous in the AW109 as the detent between idle and off is push down...the weight of your hand helps do that. It should be lift and turn. I know at least one highly experienced pilot who did that on both engines whilst demonstrating a double idle PFL and it took no less than 2700 ft for the engines to slow sufficiently that the FADEC logic allowed a relight and the engines spooled up enough to climb away. The significant height loss to recover the engines became part of the instructor syllabus in the sim workup.

Unfortunately the behaviour and skills to handle an auto with both engines running is sufficiently different from a genuine PFL that will remain a push to do double idle PFL. The Sesto Calende sim is a pretty good representation of the genuine auto characteristics according to that pilot!

PlasticCabDriver 23rd May 2024 18:46


Originally Posted by ShyTorque (Post 11660729)
Oops! Nearly had that happen to me in a Puma HC1. Part of a pilot’s IF check was an entry into autorotation after a double throttle pull. My student, in the right seat, didn’t do very well. He let the Nr drop so low that the alternators tripped off line and the autopilot disconnected as advertised. I had to take control from the resultant, horrendous “UP” he got himself into. As I rolled the aircraft level at about 300 feet agl I heard a single “Beep” from the low Nr warning system. I looked around to confirm that the crewman (who had the responsibility of advancing the throttles) was in the jump seat and was advancing them, only to see his seat empty - he’d strapped into his crash position! The HC1’s Turmo IIIC4 engines’ very poor response from idle was legendary….

My one word, very vulgar response was followed by my right hand and both of the crewman’s hands very rapidly pushing the throttles forwards. We thankfully flew away at around 100’ agl, all of us having learned valuable lessons!

Sadly an august member of this forum had a very similar experience in a Puma too, realisation kicked in far too low to get the throttles back in time.

And that was the end of double throttle pulls in the Puma.

Tech log entry: aircraft turns over but fails to start….?

212man 23rd May 2024 20:18


Originally Posted by PlasticCabDriver (Post 11661623)
Sadly an august member of this forum had a very similar experience in a Puma too, realisation kicked in far too low to get the throttles back in time.

And that was the end of double throttle pulls in the Puma.

Tech log entry: aircraft turns over but fails to start….?

Has echoes of Ben Ceaser: https://aviation-safety.net/wikibase/72871

ShyTorque 23rd May 2024 21:23

It was the aftermath of that tragic, fatal accident that finally prompted the RAF to carry out single engine failure drills in a simulator. An ex Boss of 33 Sqn (who had never been a fan of the way that they had always been done “live”) became promoted high enough to change the policy. Took another few years before it finally happened, though.

[email protected] 24th May 2024 08:15

Must have just been shortcomings with Puma pilots then :E:), double speed select pulls were no problem for Wessex pilots:ok:

FiveBlades 29th May 2024 21:52

**** happens
 
Fortunately no one was hurt or worse.


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