AD 2011-21-07 R1

AD Final Rules - 2011-21-07 R1.pdf
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AD Number:
2011-21-07 R1
Document Type:
AD Final Rules
Docket Number:
FAA-2012-0335
Subject Heading:
Airworthiness Directives; Bombardier, Inc. Airplanes
Subject:
Navigation
Status:
Current
Citation:
Federal Register Volume 77, Number 219 (Tuesday, November 13, 2012)
Citation Publish Date:
11/13/2012
Effective Date:
12/18/2012
Make:
Bombardier Inc.
Model:
CL-600-2B19 (Regional Jet Series 100) | CL-600-2B19 (Regional Jet Series 440) | CL-600-2C10 (Regional Jet Series 700) | CL-600-2C10 (Regional Jet Seri... ...Show more
Product Type:
Aircraft
Product Subtype:
Large Airplane
Affected AD:
Superseded AD:
2011-21-07
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Superseded By: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 219 (Tuesday, November 13, 2012)]


[Rules and Regulations]


[Pages 67559-67561]


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


[FR Doc No: 2012-26890]


––––––––––––––––––––––––––––––––––


DEPARTMENT OF TRANSPORTATION


Federal Aviation Administration


14 CFR Part 39


[Docket No. FAA-2012-0335; Directorate Identifier 2011-NM-252-AD; Amendment 39-17211;


AD 2011-21-07 R1]


RIN 2120-AA64


Airworthiness Directives; Bombardier, Inc. Airplanes


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


ACTION:
 
Final rule.


––––––––––––––––––––––––––––––––––


SUMMARY:
 
We are revising an existing airworthiness directive (AD) for certain Bombardier


Model CL-600-2B19 (Regional Jet Series 100 & 440) airplanes; all Model CL-600-2C10 (Regional


Jet Series 700, 701, & 702) airplanes; all Model CL-600-2D15 (Regional Jet Series 705) airplanes;


and all Model CL-600-2D24 (Regional Jet Series 900) airplanes. That AD currently requires


replacing certain water accumulator assemblies having a certain part installed on the pitot and static


lines of the air data computer (ADC). This new AD corrects an erroneous service document number


and removes the other erroneously cited service document from that AD. This new AD was prompted


by an error that was discovered in one service document number, and a determination that credit for


accomplishing actions in another erroneously cited service document should be removed from that


AD. We are issuing this AD to prevent pitot-static tubing from becoming partially or completely


blocked by water, which could result in erroneous airspeed and altitude indications and consequent


loss of control of the airplane.


DATES:
 
This AD becomes effective December 18, 2012.


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


publications listed in this AD as of November 23, 2011 (76 FR 64801, October 19, 2011).


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


person at the U.S. Department of Transportation, Docket Operations, M-30, West Building Ground


Floor, Room W12-140, 1200 New Jersey Avenue SE., Washington, DC.


FOR FURTHER INFORMATION CONTACT:
 
Cesar Gomez, Aerospace Engineer, Airframe &


Mechanical Systems Branch, ANE-171, New York Aircraft Certification Office (ACO), FAA, 1600


Stewart Avenue, Suite 410, Westbury, New York 11590; telephone (516) 228-7318; fax (516) 794-


5531.
2


SUPPLEMENTARY INFORMATION:


Discussion


We issued a notice of proposed rulemaking (NPRM) to amend 14 CFR part 39 to include an AD


that would apply to the specified products. That NPRM was published in the Federal Register on


April 18, 2012 (77 FR 23169), and proposed to revise AD 2011-21-07, Amendment 39-16830 (76 FR


64801, October 19, 2011). That NPRM proposed to correct an unsafe condition for the specified


products.


Since we issued AD 2011-21-07, Amendment 39-16830 (76 FR 64801, October 19, 2011), an


error was discovered in the document number specified in paragraph (i), ''Credit for Actions


Accomplished in Accordance with Previous Service Information,'' of that AD. The citation in that


paragraph should have read ''Bombardier Service Bulletin 601R-34-147, Revision A, dated


November 3, 2009.'' Additionally, we have determined that ''Bombardier Service Bulletin 670BA-34-


147, dated April 1, 2009,'' was incorrectly included in AD 2011-21-07 and should be removed from


paragraph (i) of that AD.


Comments


We gave the public the opportunity to participate in developing this AD. We have considered the


comment received.


Request for Credit for Previous Actions


Air Wisconsin (AWI) requested that we revise the NPRM (77 FR 23169, April 18, 2012) to


continue to give credit for previous actions for airplanes modified using Bombardier Service Bulletin


601R-34-147, dated April 1, 2009. AWI provided the following reasons for its request.


•
 
AWI stated that in the original issue of Bombardier Service Bulletin 601R-34-147, dated April 1,


2009, for airplane serial numbers (S/N) 7003 through 7890, this service information called for the


use of a parts kit that was different from the parts kit used for airplane S/Ns 7891 and subsequent.


AWI stated that it discovered, during the use of that service information, that there was no


difference between the two groups of airplanes. AWI stated that airplane S/Ns 7891 and


subsequent needed to use the same parts kit as airplane S/Ns 7003 through 7890, with the only


difference being that the kit for airplane S/Ns 7891 and subsequent lacked two tee fittings, part


number AS1033W040406, which were contained in the kits for airplane S/Ns 7003 through 7891.


AWI stated that, as a result of its discovery, Bombardier Service Bulletin 601R-34-147, dated


April 1, 2009, was revised to Bombardier Service Bulletin 601R-34-147, Revision A, dated


November 3, 2009, eliminating the reference to these two different groups of airplanes and


correcting the materials kit to include the tee fittings.


•
 
AWI stated that Bombardier Service Bulletin 601R-34-147, Revision A, dated November 3,


2009, does nothing to change parts kits or instructions for airplane S/Ns 7003 through 7890, but


only makes the correction for airplane S/Ns 7891 and subsequent.


•
 
AWI stated that airplane S/Ns 7891 and subsequent modified with the use of Bombardier Service


Bulletin 601R-34-147, dated April 1, 2009, that used the additional tee fittings are in compliance


with Bombardier Service Bulletin 601R-34-147, Revision A, dated November 3, 2009.


•
 
AWI stated that it has completed this modification on its fleet of 71 affected airplanes and that


airplane S/Ns 7891 and subsequent used the necessary tee fittings called for in Bombardier


Service Bulletin 601R-34-147, Revision A, dated November 3, 2009.


•
 
AWI stated that Bombardier Service Bulletin 601R-34-147, Revision A, dated November 3,


2009, clearly states on the transmittal, ''The changes in this revision have no effect on aircraft that


have incorporated a previous issue of the service bulletin.''