AD 2006-07-19

AD Final Rules - 2006-07-19.pdf
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AD Number:
2006-07-19
Document Type:
AD Final Rules
Docket Number:
FAA-2006-23635
Subject Heading:
Airworthiness Directives; Aerospatiale Model ATR42 Airplanes and Model ATR72 Airplanes
Subject:
Protective ramps on trim panel 110VU
Status:
Current
Citation:
Federal Register: April 7, 2006 (Volume 71, Number 67)
Citation Publish Date:
04/07/2006
Effective Date:
05/12/2006
Make:
ATR - GIE Avions de Transport Régional
Model:
ATR42-200 | ATR42-300 | ATR42-320 | ATR42-500 | ATR72-101 | ATR72-102 | ATR72-201 | ATR72-202 ...Show more
Product Type:
Aircraft
Product Subtype:
Large Airplane
Affected AD:
Superseded AD:
Affected By:
Superseded By:
Service/Office:
AIR-700: Compliance & Airworthiness Division
Office of Primary Responsibility:
AIR-730: International Validation Branch
CFR Part Reference:
Part 39
Comments:
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[Federal Register: April 7, 2006 (Volume 71, Number 67)]


[Rules and Regulations]


[Page 17700-17701]


From the Federal Register Online via GPO Access [wais.access.gpo.gov]


[DOCID:fr07ap06-5]


–––––––––––––––––––––––––––––––––––


DEPARTMENT OF TRANSPORTATION


Federal Aviation Administration


14 CFR Part 39


[Docket No. FAA-2006-23635; Directorate Identifier 2005-NM-245-AD; Amendment 39-14546;


AD 2006-07-19]


RIN 2120-AA64


Airworthiness Directives; Aerospatiale Model ATR42 Airplanes and Model ATR72 Airplanes


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


ACTION:
 
Final rule.


–––––––––––––––––––––––––––––––––––-


SUMMARY:
 
The FAA is adopting a new airworthiness directive (AD) for certain Aerospatiale


Model ATR42 airplanes and Model ATR72 airplanes. This AD requires installing protective ramps


on trim panel 110VU; and inspecting the protective guard of the standby pitch trim switch to


determine if it is missing, damaged, or ineffective, and doing the corrective action if necessary. This


AD results from a finding that the protective guard of the standby pitch trim switch, which is installed


on the center pedestal, could be damaged or missing. We are issuing this AD to prevent inadvertent


activation of the standby pitch trim, which could result in pitch trim runaway and consequent reduced


controllability of the airplane.


DATES:
 
This AD becomes effective May 12, 2006.


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


publications listed in the AD as of May 12, 2006.


ADDRESSES:
 
You may examine the AD docket on the Internet at
 
http://dms.dot.gov
 
or in person at


the Docket Management Facility, U.S. Department of Transportation, 400 Seventh Street, SW.,


Nassif Building, Room PL-401, Washington, DC.


Contact Aerospatiale, 316 Route de Bayonne, 31060 Toulouse, Cedex 03, France, for service


information identified in this AD.


FOR FURTHER INFORMATION CONTACT:
 
Dan Rodina, Aerospace Engineer, International


Branch, ANM-116, Transport Airplane Directorate, FAA, 1601 Lind Avenue, SW., Renton,


Washington 98055-4056; telephone (425) 227-2125; fax (425) 227-1149.
2


SUPPLEMENTARY INFORMATION:


Examining the Docket


You may examine the airworthiness directive (AD) docket on the Internet at
 
http://dms.dot.gov


or in person at the Docket Management Facility office between 9 a.m. and 5 p.m., Monday through


Friday, except Federal holidays. The Docket Management Facility office (telephone (800) 647-5227)


is located on the plaza level of the Nassif Building at the street address stated in the ADDRESSES


section.


Discussion


The FAA issued a notice of proposed rulemaking (NPRM) to amend 14 CFR part 39 to include


an AD that would apply to certain Aerospatiale Model ATR42 airplanes and Model ATR72 airplanes.


That NPRM was published in the Federal Register on January 19, 2006 (71 FR 3023). That NPRM


proposed to require installing protective ramps on trim panel 110VU; and inspecting the protective


guard of the standby pitch trim switch to determine if it is missing, damaged, or ineffective, and


doing the corrective action if necessary.


Comments


We provided the public the opportunity to participate in the development of this AD. We


received no comments on the NPRM or on the determination of the cost to the public.


Explanation of Changes to Applicability


We have corrected the applicability in paragraph (c) of the AD to reidentify the modification as


''ATR Modification 05450.''


We have revised the applicability in paragraph (f) of the AD to identify model designations as


published in the most recent type certificate data sheet for the affected models.


Conclusion


We have carefully reviewed the available data and determined that air safety and the public


interest require adopting the AD with the changes described previously. We have determined that


these changes will neither increase the economic burden on any operator nor increase the scope of the


AD.


Costs of Compliance


This AD affects about 69 airplanes of U.S. registry. The required actions will take about 1 work


hour per airplane, at an average labor rate of $65 per work hour. Required parts will cost about $465


per airplane. Based on these figures, the estimated cost of the AD for U.S. operators is $36,570, or


$530 per airplane.


Authority for This Rulemaking


Title 49 of the United States Code specifies the FAA's authority to issue rules on aviation safety.


Subtitle I, section 106, describes the authority of the FAA Administrator. Subtitle VII, Aviation


Programs, describes in more detail the scope of the Agency's authority.