AD 2012-15-07 R1

AD Final Rules - 2012-15-07 R1.pdf
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AD Number:
2012-15-07 R1
Document Type:
AD Final Rules
Docket Number:
FAA-2012-0046
Subject Heading:
Airworthiness Directives; Glasflugel Gliders
Subject:
Flight Controls
Status:
Current
Citation:
Federal Register Volume 77, Number 175 (Monday, September 10, 2012)
Citation Publish Date:
09/10/2012
Effective Date:
09/25/2012
Make:
Glasflugel
Model:
Club Libelle 205 | Kestrel | Mosquito | Standard Libelle-201B
Product Type:
Aircraft
Product Subtype:
Glider
Affected AD:
Superseded AD:
2012-15-07
Affected By:
Superseded By:
Service/Office:
Office of Primary Responsibility:
CFR Part Reference:
Part 39
Comments:
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[Federal Register Volume 77, Number 175 (Monday, September 10, 2012)]


[Rules and Regulations]


[Pages 55411-55413]


From the Federal Register Online via the Government Printing Office [www.gpo.gov]


[FR Doc No: 2012-22039]


––––––––––––––––––––––––––––––––––


DEPARTMENT OF TRANSPORTATION


Federal Aviation Administration


14 CFR Part 39


[Docket No. FAA-2012-0046; Directorate Identifier 2011-CE-040-AD; Amendment 39-17186;


AD 2012-15-07 R1]


RIN 2120-AA64


Airworthiness Directives; Glasflugel Gliders


AGENCY:
 
Federal Aviation Administration (FAA), Department of Transportation (DOT).


ACTION:
 
Final rule; request for comments.


––––––––––––––––––––––––––––––––––


SUMMARY:
 
We are revising an existing airworthiness directive (AD) for Glasflugel Models


Standard Libelle-201B, Club Libelle 205, Mosquito, and Kestrel gliders. That AD currently requires


actions to address the unsafe condition on these products. This new AD includes clarification that the


replacement control rod has an additional drain hole at the rod bottom between the forks and is the


acceptable configuration for compliance. This AD results from mandatory continuing airworthiness


information (MCAI) issued by an aviation authority of another country to identify and correct an


unsafe condition on an aviation product. The MCAI describes the unsafe condition as corrosion


damage to the elevator control rod that could lead to failure of the elevator control rod, possibly


resulting in loss of control of the glider. We are issuing this AD to require actions to address the


unsafe condition on these products.


DATES:
 
This AD is effective September 25, 2012.


The Director of the Federal Register approved the incorporation by reference of a certain


publication listed in the AD as of September 11, 2012.


We must receive any comments on this AD by October 25, 2012.


ADDRESSES:
 
You may examine the AD docket on the Internet at http://www.regulations.gov or in


person at Document Management Facility, U.S. Department of Transportation, Docket Operations,


M-30, West Building Ground Floor, Room W12-140, 1200 New Jersey Avenue SE., Washington,


DC 20590.


For service information identified in this AD, contact Glasfaser Flugzeug-Service Hansjörg


Streifeneder GmbH, D-72582 Grabenstetten, Germany; phone: +49(0)73821032, fax:


+49(0)73821629; email: info@streifly.de; Internet: www.streifly.de/. You may review copies of the


referenced service information at the FAA, Small Airplane Directorate, 901 Locust, Kansas City,


Missouri 64106. For information on the availability of this material at the FAA, call (816) 329-4148.
2


FOR FURTHER INFORMATION CONTACT:
 
Jim Rutherford, Aerospace Engineer, FAA, Small


Airplane Directorate, 901 Locust, Room 301, Kansas City, Missouri 64106; telephone: (816) 329-


4165; fax: (816) 329-4090; email: jim.rutherford@faa.gov.


SUPPLEMENTARY INFORMATION:


Discussion


On July 18, 2012, we issued AD 2012-15-07, amendment 39-17136 (77 FR 46940, August 7,


2012) for Glasflugel Models Standard Libelle-201B, Club Libelle 205, Mosquito, and Kestrel gliders.


That AD resulted from mandatory continuing airworthiness information (MCAI) issued by an


aviation authority of another country to identify and correct an unsafe condition on an aviation


product. We issued that AD to require actions to address the unsafe condition on these products.


Actions Since AD Was Issued


Since we issued AD 2012-15-07, amendment 39-17136 (77 FR 46940, August 7, 2012),


compliance with the existing AD required operators to not install an elevator control rod with a


control bore hole. An operator reported that the improved replacement rods, as expected, have no


control bore hole on the side at the top of the rod where there had previously been a hole. However,


the improved replacement rods do have a new drain hole at the bottom of the rod between the forks.


The operator expressed confusion as to whether this drain hole would cause the new rod to not be in


compliance since there was no clarification of ''on the side.''


Relevant Service Information


Glasfaser Flugzeug-Service GmbH has issued Technical Note TN 201-40, TN 205-27, TN 206-


26, TN 303-25, TN 304-12, TN 401-30, TN 501-10, and TN 604-11, Revision 1, dated July 14, 2011


(EASA translation approval dated September 9, 2011). The actions described in this service


information are intended to correct the unsafe condition identified in the MCAI.


FAA's Determination


We are issuing this AD because we evaluated all the relevant information and determined the


unsafe condition described previously is likely to exist or develop in other products of the same type


design.


AD Requirements


This AD retains the actions from AD 2012-15-07 but adds the language of ''on the side'' to assure


that the replacement control rod, which has an additional drain hole at the rod bottom between the


forks, is an acceptable configuration for compliance.


FAA's Justification and Determination of the Effective Date


This action incorporates clarification that the additional drain hole at the rod bottom between the


forks on the replacement control rods is the acceptable configuration for compliance and does not


require any additional work for those airplanes. Therefore, we find that notice and opportunity for


prior public comment are unnecessary and that good cause exists for making this amendment


effective in less than 30 days.