Matronics Email Lists :: View topic - New Zeland XL Safety Recommendation

Matronics Email Lists
Web Forum Interface to the Matronics Email Lists

Get Email Distribution Too! FAQ Search Memberlist Usergroups Register

Profile Log in to check your private messages Log in

New Zeland XL Safety Recommendation - Continuing Airworthin

Matronics Email Lists Forum Index -> Zenith-List

View previous topic :: View next topic

Author Message

tonyplane(at)bellsouth.ne
Guest

Posted: Thu Apr 23, 2009 4:21 pm Post subject: New Zeland XL Safety Recommendation - Continuing Airworthin

FYI. From Aero News Network. NZ Safety  Recommendation<?xml:namespace prefix = o ns =  "urn:schemas-microsoft-com:office:office" /> 

  

·   Avoid flight in severe turbulence   

·   Avoid high speeds and/or severe manoeuvres   

·   Aerobatics, if permitted for your aircraft, should not  be attempted.  

  

I do not necessarily agree flutter is cause, (still  suspect structural over load due to stick input - remember the Zodiac is not  aerobatic and rapid stick inputs (easily done) can cause accelerated  stall (or worse if above Va).  I keep my speed down to or below Va in  turbulence.  The NZ recommendations are worth considering for any and all  light aircraft not specifically designed/stressed for aerobatics   

  

Tony Graziano 

XL/Jab3300; N493TG 485  hrs 

------------------- 

New Zealand Issues CAN For Zenith and Zenair CH601  Series A/C Continuing  Airworthiness Notice – 27-003, Zenith and Zenair CH601 Aircraft Series Safety  Recommendation 

[/url][url=mid://00000019/][/url][url=mid://00000019/]The  Civil Aviation Authority of New Zealand has issued a Continuing Airworthiness  Notice regarding the Zenith and Zenair CH601 series, "in the interests of  aviation safety." 

Continuing Airworthiness  Notices (CAN) are intended to alert, educate, and make recommendations to the  aviation community. A CAN contains non-regulatory information and guidance that  does not meet the criteria for an Airworthiness Directive (AD). The inspections  and practices described in this CAN must still be carried out in accordance with  the applicable NZCAR Parts 21, 43 and 91. CAA's  

Applicable to 'All Zenith  and Zenair CH601 series aircraft', the 'Continuing Airworthiness Notice (CAN) is  to advise operators of Zenith and Zenair CH601 series aircraft that there have  been six in-flight structural breakups of Zodiac CH601 XL aircraft since 2006.  It appears that aerodynamic flutter is the likely cause of four of the USA  accidents and at least two accidents in Europe. The aircraft manufacturer  believes flight control flutter will not occur if the control cables are  correctly adjusted. Zenair Europe on behalf of Zenair Ltd issued SB No.  ZE-2008-01 dated 28 October 2008 requiring the inspection of all control cables  for correct tension to prevent aerodynamic flutter.' Background 

The Civil Aviation  Authority of the Netherlands issued Emergency Airworthiness Directive  NL-2008-003 on 24 October 2008 grounding all Zodiac CH601 XL aircraft (both  factory and homebuilt) as an interim measure pending their investigation of a  fatal accident on 14 September 2008, in which it appears the wing broke up in  flight. Since the issue of the Netherlands AD the National Transport Safety  Board (NTSB) issued urgent Safety Recommendation A-09-30, dated 14 April 2009  addressed to the Federal Aviation Administration (FAA) requesting the grounding  of all Zodiac CH601 XL aircraft in the USA due to six in-flight structural  breakups since 2006. The FAA are looking into concerns about all versions of the  Zodiac CH601 XL aircraft and have no immediate plans to call for the aircraft to  be grounded citing the aircraft manufacturer has already told operators to  inspect aileron control cable tensions. 

[/url]The aircraft manufacturer believes aerodynamic  flutter will not occur if the control cables are correctly tensioned and has  issued SB No. ZE-2008-01 dated 28 October 2008 requiring the inspection of all  control cable for correct tension. They have also posted a letter on [url=http://www.zenithair.com/]http://www.zenithair.com/ from the designer  that relates to the in-flight breakups. 

[/url]Recommendation 

The CAA will continue to  monitor the situation closely but in the interim we advise owners of Zenith and  Zenair CH601 series aircraft to exercise all possible caution in the operation  of their aircraft. In particular the CAA recommends you observe the  following:    Avoid flight in severe turbulence       
Avoid high speeds and/or severe    manoeuvres    
Aerobatics, if permitted for your    aircraft, should not be attempted.  

Inspection of the control  cables in accordance with Zenair Europe SB No. ZE-2008-01 is strongly  recommended. Although the Netherlands AD is not yet mandatory in New Zealand,  the Civil Aviation Authority is in contact with the FAA and the Netherlands  Authority, and a NZ AD may be issued in the near future. In the interim we wish  to draw your attention to the Netherlands AD, the NTSB urgent Safety  Recommendation and the SB issued by Zenair Ltd.[url=mid://00000019/] 

The NZ CAA recommends the  review of documents available from http://www.zenithair.com/  . FMI: www.caa.govt.nz/Airworthiness_Directives/Continuing_Airworthiness_Notices/CAN_27-003.pdfNew  Zealand Issues CAN For Zenith and Zenair CH601 Series A/C   

 

   [quote][b]

- The Matronics Zenith-List Email Forum -

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

http://www.matronics.com/Navigator?Zenith-List

Display posts from previous:

	Matronics Email Lists Forum Index -> Zenith-List	All times are GMT - 8 Hours
Page 1 of 1

Jump to:

You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
You cannot attach files in this forum
You can download files in this forum