Sydney Airport Message Board Sydney Airport Message Board  

Go Back   Sydney Airport Message Board > Technical > Flying and Technical Discussion


Reply
 
Thread Tools Search this Thread Display Modes
  #1  
Old 16th June 2016, 03:24 AM
Philip Argy's Avatar
Philip Argy Philip Argy is offline
Senior Member
 
Join Date: May 2008
Location: Drummoyne
Posts: 1,350
Exclamation ATR72 pitch disconnect warning

The ATSB yesterday issued a safety-triggered interim report after discovering that the risk of inadvertent flight inputs causing catastrophic structural damage is much higher than had been assumed:

Quote:
Inadvertent application of opposing pitch control inputs by flight crew can activate the pitch uncoupling mechanism which, in certain high-energy situations, can result in catastrophic damage to the aircraft structure before crews are able to react.
View the interim report at In-flight pitch disconnect involving ATR 72 aircraft, VH-FVR, 47 km WSW of Sydney Airport, NSW on 20 February 2014

A bit disconcerting really considering the number of times I fly the SYD-CBR corridor in an ATR 72 (and FVR in particular)!
__________________
Philip
Between 16R and 16L glide slopes (33.842252 S 151.153295 E) - wave as you fly over!

Last edited by Philip Argy; 16th June 2016 at 03:29 AM.
Reply With Quote
  #2  
Old 5th May 2017, 03:27 PM
Philip Argy's Avatar
Philip Argy Philip Argy is offline
Senior Member
 
Join Date: May 2008
Location: Drummoyne
Posts: 1,350
Exclamation Second report confirms tail strength concerns

The ATSB has issued a second interim report confirming its concerns about the tail strength of ATR 72s in the event of a pitch disconnect:

In-flight pitch disconnect involving ATR 72 aircraft, VH-FVR, 47 km WSW of Sydney Airport, NSW on 20 February 2014

If nothing is done in the next 90 days I'd say there's a possibility that the aircraft could have its certification withdrawn - pretty serious stuff!

Here's an extract:

Quote:
During the continued investigation of the occurrence, the ATSB has obtained an increased understanding of the factors behind this previously identified safety issue. This increased understanding has identified that there are transient elevator deflections during a pitch disconnect event that could lead to aerodynamic loads that could exceed the strength of the aircraft structure.
The ATSB also found that these transient elevator deflections were not identified, and therefore not considered in the engineering justification documents completed during the aircraft type’s original certification process. The ATSB considers that the potential consequences are sufficiently important to release a further interim report prior to completion of the final investigation report.
__________________
Philip
Between 16R and 16L glide slopes (33.842252 S 151.153295 E) - wave as you fly over!

Last edited by Philip Argy; 5th May 2017 at 03:31 PM. Reason: Added quote
Reply With Quote
  #3  
Old 6th May 2017, 04:23 PM
Robert.M Robert.M is offline
Member
 
Join Date: Aug 2014
Location: Wagga Wagga
Posts: 530
Default

Picked up by The Canberra Times
http://www.canberratimes.com.au/busi...05-gvz064.html
__________________
Flightradar24 feeder (F-YSWG1 & T-YSWG2)
FlightAware feeder (YSWG/6482)
Range: F-YSWG1 (light grey opacity) - T-YSWG2/6482 (dark opacity)
Reply With Quote
  #4  
Old 2nd September 2017, 09:59 PM
Philip Argy's Avatar
Philip Argy Philip Argy is offline
Senior Member
 
Join Date: May 2008
Location: Drummoyne
Posts: 1,350
Thumbs down

I think that's an inappropriate post, Liam, in the context of an ATSB report about a potential design flaw in an aircraft - it has nothing to do with the carrier!
__________________
Philip
Between 16R and 16L glide slopes (33.842252 S 151.153295 E) - wave as you fly over!

Last edited by Philip Argy; 3rd September 2017 at 08:36 AM.
Reply With Quote
  #5  
Old 3rd September 2017, 07:17 AM
Rowan McKeever Rowan McKeever is offline
Senior Member
 
Join Date: Aug 2011
Posts: 1,464
Default

Quote:
Originally Posted by Philip Argy View Post
I think that's an inappropriate post, Lian, in the context of an ATSB report about a potential design flaw in an aircraft - it has nothing to do with the carrier!


I completely agree with Philip, and I'll add that at no point has the skill, training or professionalism of the crew, nor their specific handling of this incident, ever been called into question by the ATSB or anyone else suitably qualified to do so. So the link to human factors is tenuous at best.


Sent from my iPhone using Tapatalk
Reply With Quote
  #6  
Old 3rd September 2017, 01:26 PM
Mick F Mick F is offline
Member
 
Join Date: Mar 2008
Location: NSW
Posts: 845
Default

Quote:
Originally Posted by Liam C View Post
Virgin's attitude toward safety (having worked for them), leaves me in no doubt that flying on those aircraft would involve some risk......

Sorry - but I (and a few others I know) are happy to stand by that !
And a very silly thing to say in a public forum as a former/current employee. Unless you're willing to go through the legal battle to back it up Liam might I suggest that you remove that.

Mick
Reply With Quote
  #7  
Old 9th October 2017, 07:19 PM
MarkR MarkR is offline
Senior Member
 
Join Date: Dec 2012
Posts: 1,075
Default

Quote:
Originally Posted by Liam C View Post
That said, I feel my point is worth making nonetheless due to the apparent systemic attitude toward safety in that airline.
I don’t think it’s a relevant point at all given from what I can gather you are talking about Virgin Blue and this was Virgin Australia Regional Airlines operating under a different AOC and staffing. After all we are talking about the same airline that had such a big concern over safety they they conducted drug testing of a crew in full view of pax preflight at bdb some time ago!

If you think you have valid concerns about a risk still evident, I would suggest a Repcon report would be in more order than alleged slander on a public forum.

Last edited by MarkR; 9th October 2017 at 07:26 PM.
Reply With Quote
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT +10. The time now is 06:13 PM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2018, vBulletin Solutions Inc.
Copyright Sydney Airport Message Board 1997-2016
Use of this web site constitutes acceptance of the Conditions of Use and Privacy Statement