Australia, New Zealand & the Pacific Airline and RPT Rumours & News in Australia, enZed and the Pacific

Rex incident YSSY

Old 19th Mar 2017, 04:45
  #81 (permalink)  
 
Join Date: Nov 2015
Location: Dog House
Age: 44
Posts: 783
Originally Posted by RENURPP View Post
I can't recall an event like this in the last 20 years either, I can recall one about 24 years ago. A baron inbound to Darwin about 20 DME from memory, lost its propellor (assembly)
Did this rip the engine out of its mounts? But engine was contained within the cowls and by flexible hoses?
Band a Lot is offline  
Old 19th Mar 2017, 04:57
  #82 (permalink)  
 
Join Date: Nov 2015
Location: Dog House
Age: 44
Posts: 783
To see how a complete propeller assembly will depart an engine/aircraft while still rotating maybe buy one of these and see for yourself.

Child Kids Spin Space Toy Plastic Flying Saucer Saucers Shooter Gun Set Gift | eBay
Band a Lot is offline  
Old 19th Mar 2017, 06:01
  #83 (permalink)  
TTY
 
Join Date: Aug 2013
Location: Tamworth,NSW
Posts: 30
A little bit over 20 years ago but on Feb 1 1993 a Nord Mohawk 298 VH-HKS lost a prop somewhere over the national park area just north of Sydney whilst en-route to Tamworth. Don't think it was ever found.
TTY is offline  
Old 19th Mar 2017, 06:13
  #84 (permalink)  
 
Join Date: Mar 2007
Location: Perth, Australia
Posts: 389
Well done to all involved.
They were extremely lucky the airframe was not hit and severely damaged when it came off as is often the case in these type of incidents.

For eg,
There was this accident back in 1995, sadly a crash and people killed.
A blade separated from the hub first, then the whole prop came off and lodged in the now drooping engine nacelle and wing LE.
Was on Air Crash Investigations show.

There have been a few of these type of events in transport category turboprops but thankfully they are rare.

https://en.wikipedia.org/wiki/Atlant...nes_Flight_529
aussie027 is offline  
Old 19th Mar 2017, 06:30
  #85 (permalink)  
 
Join Date: Dec 2013
Location: Dallas
Posts: 96
.

ASA Flight 529 came to mind for me as well. The captain performed his duties to the fullest extent possible and saved lives.
ThreeThreeMike is offline  
Old 19th Mar 2017, 09:22
  #86 (permalink)  
 
Join Date: Feb 2009
Location: dans un cercle dont le centre est eveywhere et circumfernce n'est nulle part
Posts: 2,606
The loss of a propeller blade as opposed to a propeller are two different incidents with two different consequences.
Frank Arouet is offline  
Old 19th Mar 2017, 10:34
  #87 (permalink)  
 
Join Date: Jan 2006
Location: S.O.E.
Posts: 122
Where the f**k is the propeller?

If it occurred between Camden and Sydney, can't believe it hasn't been found by someone.
Dale Hardale is online now  
Old 19th Mar 2017, 11:03
  #88 (permalink)  
 
Join Date: Jul 2011
Location: Melbourne
Posts: 40
Pretty good chance it's come down somewhere around R555 (Holsworthy)
WhisprSYD is offline  
Old 19th Mar 2017, 12:04
  #89 (permalink)  
 
Join Date: Sep 1999
Location: Sydney
Posts: 470
Originally Posted by Dale Hardale View Post
Where the f**k is the propeller?

If it occurred between Camden and Sydney, can't believe it hasn't been found by someone.
Has anyone checked eBay?

It may be lost forever. Buried in the grass on someone's front lawn. Along with the 1978 Kingswood.
IsDon is offline  
Old 19th Mar 2017, 12:04
  #90 (permalink)  
 
Join Date: Feb 2011
Location: Oz
Posts: 567
Where is it? On gumtree of course!

https://www.gumtree.com.au/s-ad/moun...340/1142267959

LOL
PoppaJo is offline  
Old 19th Mar 2017, 12:25
  #91 (permalink)  
 
Join Date: Jan 2006
Location: S.O.E.
Posts: 122
excellent
Dale Hardale is online now  
Old 19th Mar 2017, 13:16
  #92 (permalink)  
 
Join Date: Jul 2011
Location: Wollongong
Posts: 1
Originally Posted by TTY View Post
A little bit over 20 years ago but on Feb 1 1993 a Nord Mohawk 298 VH-HKS lost a prop somewhere over the national park area just north of Sydney whilst en-route to Tamworth. Don't think it was ever found.
Here are two earlier prop and engine loss events


1964 Ansett ANA DC6B VH INA lost prop from RH inner due fatigue fracture after take off Essendon then engine itself fell off. Landed safe
1940 ANA C2 VH USY right hand engine fell off after engine fire. Landed safe NHill.
jabflyer2200 is offline  
Old 19th Mar 2017, 20:51
  #93 (permalink)  
 
Join Date: Nov 2009
Location: SE Qld, Australia
Age: 73
Posts: 951
Not just two. Bell Brothers' Cessna 411 (VH-BBV) near Meekatharra WA around 1968. Prop sheared off, and then came back and punctured the fuselage in several places. It missed the pilot's head by a few inches. DCA (as they then were) subsequently mounted a huge, and unsuccessful, search for the prop. I thought Griffo would have mentioned this one.

I'm with everyone else - I think the Rex crew did a great job here.
Dora-9 is offline  
Old 20th Mar 2017, 00:20
  #94 (permalink)  
 
Join Date: Dec 2016
Location: Melbourne
Posts: 58
Coincidentally, I saw an episode of Air Crash Investigations recently covering Reeve Aleutian Airways Flight 8 in 1983.
Lockheed Electra lost a prop.

"The propeller tore a gash 8 feet (2.4 m) long in the aircraft's belly, causing the cabin to depressurize and jamming the flight controls and engine throttle controls."

https://en.wikipedia.org/wiki/Reeve_...rways_Flight_8

All were very lucky to survive.
Good episode.

Last edited by 0ttoL; 20th Mar 2017 at 00:22. Reason: Addition of link
0ttoL is offline  
Old 20th Mar 2017, 05:52
  #95 (permalink)  
 
Join Date: Aug 2015
Location: Somewhere
Posts: 165
REX has grounded 5 other aircraft with the same gear box series

Regional airline Rex has grounded an additional five planes as an investigation continues into how a propeller fell off one of its aircraft as it was approaching Sydney Airport late last week.
Regional Express says the crew had shut down the right-hand engine of the Saab 340 before the propeller assembly "was seen by the first officer to separate from its shaft" on Friday when the flight from Albury was 25 kilometres southwest of Sydney.
"Rex has decided, by abundance of caution, to immediately remove from service and quarantine all propeller gear boxes and shafts of the same series as that of the incident for further inspection and testing if warranted," Rex said in a statement on Monday.
A spokeswoman told AAP five aircraft were grounded in addition to the plane involved in Friday's incident, which has been quarantined.
Two normally operate on Rex's Melbourne network, one is from Sydney and the remaining two are Pel-Air freighters.
"There will be some minor disruptions for one or two days," the spokeswoman said.
The Saab 340's engine was shut down on Friday following "abnormal indications", with the pilot "feathering" the propeller to reduce drag.
Rex grounds planes after propeller mishap

The statement indicating the prop was being feathered indicates it was already shut down at the time of the separation which seems strange to me, what forces could rip a prop of if it wasn't under thrust?
logansi is offline  
Old 20th Mar 2017, 06:11
  #96 (permalink)  
 
Join Date: Nov 2007
Location: Australia
Posts: 2,179
Via logansi:
The statement indicating the prop was being feathered indicates it was already shut down at the time of the separation which seems strange to me, what forces could rip a prop of if it wasn't under thrust?
Going off the news reports, they were shutting down because of a vibration.
As the prop were slowing down it would have been affected by all the other airframe/engine/gearbox/prop vibrations and may have hit a 'sweet spot' of harmonics that created enough vibration to finnish the job off.

E.g., many aircraft prop/engine combinations have an engine 'rev range' where they should not be operated for any length of time due to vibration considerations.




.
Flying Binghi is offline  
Old 20th Mar 2017, 06:59
  #97 (permalink)  
 
Join Date: Nov 2004
Location: Perth - Western Australia
Age: 70
Posts: 1,806
I'd suggest the engine vibration abnormality leading to the crew shutting it down, was due to the propellor assembly becoming unbalanced as the shaft started to fracture on a serious scale - and as the engine was being shut down and the prop being feathered, the fracture finally extended to the full circumference of the shaft, and the propellor assembly then fell off.

onetrack is offline  
Old 20th Mar 2017, 08:48
  #98 (permalink)  
 
Join Date: Aug 2015
Location: Somewhere
Posts: 165
Does anyone know the maintenance/inspection scheduled for the prop shaft?
logansi is offline  
Old 20th Mar 2017, 10:04
  #99 (permalink)  
 
Join Date: Nov 2015
Location: Dog House
Age: 44
Posts: 783
The schedule is today and before further flight.

I hear they are extending this shaft in the next mod status so better NDTs can be conducted between overhauls. Also 3 extra grease nipples will be fitted for better (some) maintenance of the prop shaft other than visual inspection of the area you can not see when prop is fitted.
Band a Lot is offline  
Old 20th Mar 2017, 11:02
  #100 (permalink)  
 
Join Date: Jun 1999
Location: Oztrailia
Posts: 2,712
So how's the Engine itself?
ACMS is online now  

Thread Tools
Search this Thread

Contact Us Archive Advertising Cookie Policy Privacy Statement Terms of Service

Copyright 2018 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.