Airworthiness Directives; Bombardier Model DHC-8-100, DHC-8-200, and DHC-8-300 Series Airplanes, 49332-49335 [E6-13829]

Download as PDF 49332 Federal Register / Vol. 71, No. 163 / Wednesday, August 23, 2006 / Rules and Regulations TABLE 4.—ADDITIONAL SERVICE INFORMATION FOR REPLACEMENT For model— Boeing— 767–400ER series airplanes .............................. 777–200 and –300 series airplanes ................... Special 0125, Service dated Refers to Kidde Aerospace Service Bulletin— Attention Service Bulletin 767–26– dated January 22, 2004 Bulletin 777–26–0034, Revision 1, July 1, 2004. 473876–26–453, dated January 22, 2004. 473474–26–450, dated January 22, 2004. 473475–26–451, dated January 22, 2004. 473854–26–452, dated January 22, 2004. 473876–26–453, dated January 22, 2004. Parts Installation (i) For all airplanes: As of the effective date of this AD, no person may install a cargo fire extinguishing bottle, part numbers (P/Ns) 473474–1 and –2, P/Ns 473475–1 and –2, P/Ns 473854–1 and –2, or P/Ns 473876–1 and –2, on any airplane, unless the initial test required by paragraph (g) of this AD is accomplished. Credit for Previous Service Bulletins (j) For all Model 777–200 series airplanes; and Model 777–300 series airplanes identified as Group 2 in Boeing Special Attention Service Bulletin 777–26–0034, dated January 22, 2004: Actions done before the effective date of this AD in accordance with Boeing Special Attention Service Bulletin 777–26–0034, dated January 22, 2004, are acceptable for compliance with the corresponding requirements of this AD. (k) For all Model 767–400ER series airplanes: Actions done before the effective date of this AD in accordance with Boeing Special Attention Service Bulletin 767–26– 0124, dated December 5, 2002, are acceptable for compliance with the corresponding requirements of this AD. Alternative Methods of Compliance (AMOCs) (l)(1) The Manager, Seattle ACO, FAA, has the authority to approve AMOCs for this AD, if requested in accordance with the procedures found in 14 CFR 39.19. (2) Before using any AMOC approved in accordance with 14 CFR 39.19 on any airplane to which the AMOC applies, notify the appropriate principal inspector in the FAA Flight Standards Certificate Holding District Office. Material Incorporated by Reference (m) You must use the service information in Table 5 of this AD to perform the actions that are required by this AD, unless the AD specifies otherwise. The Director of the Federal Register approved the incorporation by reference of these documents in accordance with 5 U.S.C. 552(a) and 1 CFR part 51. Contact Boeing Commercial Airplanes, P.O. Box 3707, Seattle, Washington 98124–2207, for a copy of this service information. You may review copies at the Docket Management Facility, U.S. Department of Transportation, 400 Seventh Street, SW., Room PL–401, Nassif Building, Washington, DC; on the Internet at http:// dms.dot.gov; or at the National Archives and Records Administration (NARA). For information on the availability of this material at the NARA, call (202) 741–6030, or go to http://www.archives.gov/ federal_register/code_of_federal_regulations/ ibr_locations.html. TABLE 5.—MATERIAL INCORPORATED BY REFERENCE Service Bulletin Boeing Boeing Boeing Boeing Revision level Service Bulletin 777–26–0034 ................................................................. Special Attention Service Bulletin 767–26–0124 ..................................... Special Attention Service Bulletin 767–26–0125 ..................................... Special Attention Service Bulletin 777–26–0033 ..................................... Issued in Renton, Washington, on August 10, 2006. Kalene C. Yanamura, Acting Manager, Transport Airplane Directorate, Aircraft Certification Service. [FR Doc. E6–13825 Filed 8–22–06; 8:45 am] BILLING CODE 4910–13–P 1 ............................................................ 1 ............................................................ Original .................................................. Original .................................................. DEPARTMENT OF TRANSPORTATION Federal Aviation Administration 14 CFR Part 39 [Docket No. FAA–2006–24290; Directorate Identifier 2005–NM–243–AD; Amendment 39–14731; AD 2006–17–10] RIN 2120–AA64 Airworthiness Directives; Bombardier Model DHC–8–100, DHC–8–200, and DHC–8–300 Series Airplanes Federal Aviation Administration (FAA), Department of Transportation (DOT). ACTION: Final rule. sroberts on PROD1PC70 with RULES AGENCY: SUMMARY: The FAA is adopting a new airworthiness directive (AD) for certain Bombardier Model DHC–8–100, DHC– 8–200, and DHC–8–300 series airplanes. This AD requires repetitive inspections of the fluorescent light tube assemblies VerDate Aug<31>2005 17:06 Aug 22, 2006 Jkt 208001 PO 00000 Frm 00024 Fmt 4700 Sfmt 4700 Date July 1, 2004. April 13, 2006. January 22, 2004. December 5, 2002. of the cabin, lavatory, and sidewall, and corrective actions if necessary. This AD also provides for optional terminating action for the repetitive inspections. This AD results from reports of overheating due to arcing between the fluorescent tube pins and the lamp holder contacts. The tubes had not been properly seated during installation. We are issuing this AD to prevent fumes, traces of visible smoke, and fire at the fluorescent light tube assembly. This AD becomes effective September 27, 2006. The Director of the Federal Register approved the incorporation by reference of certain publications listed in the AD as of September 27, 2006. DATES: 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 ADDRESSES: E:\FR\FM\23AUR1.SGM 23AUR1 49333 Federal Register / Vol. 71, No. 163 / Wednesday, August 23, 2006 / Rules and Regulations Comments We provided the public the opportunity to participate in the development of this AD. We have considered the comments received. SW., Nassif Building, Room PL–401, Washington, DC. Contact Bombardier, Inc., Bombardier Regional Aircraft Division, 123 Garratt Boulevard, Downsview, Ontario M3K 1Y5, Canada, for service information identified in this AD. FOR FURTHER INFORMATION CONTACT: Douglas Wagner, Aerospace Engineer, Systems and Flight Test Branch, ANE– 172, FAA, New York Aircraft Certification Office, 1600 Stewart Avenue, suite 410, Westbury, New York 11590; telephone (516) 228–7306; fax (516) 794–5531. 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 Bombardier Model DHC–8–100, DHC–8–200, and DHC–8– 300 series airplanes. That NPRM was published in the Federal Register on April 4, 2006 (71 FR 16725). That NPRM proposed to require repetitive inspections of the fluorescent light tube assemblies of the cabin, lavatory, and sidewall, and corrective actions if necessary. That NPRM also proposed to provide for optional terminating action for the repetitive inspections. Request To Extend Compliance Time Piedmont Airlines states that its Ccheck inspection interval can go up to 6,258 flight hours. Piedmont describes the grievous effect the NPRM compliance times will have on the airline. The NPRM specifies a compliance time of 5,000 flight hours or 36 months, whichever occurs first, for the initial compliance time, and repetitive intervals of 5,000 flight hours. The commenter requests that the initial inspection be done within the next Ccheck or 36 months and that the repetitive interval be done at intervals not to exceed the next C-check. We agree to extend the compliance time, although we cannot refer to ‘‘the next C-check’’ because the variability among operators’ maintenance schedules would not guarantee that the required work would be done within an appropriate time. We have instead revised paragraph (f) of this final rule to require an initial compliance time of 6,300 flight hours or 36 months, whichever occurs first, with a repetitive interval of 6,300 flight hours. We have determined that such an extension will not adversely affect safety, and will allow the work to be performed during regularly scheduled maintenance at a base where special equipment and trained maintenance personnel will be available if necessary. 28–1 as of the effective date of the AD. Piedmont questions whether that statement applies when parts are removed for other maintenance, or only when the part is replaced. We acknowledge the commenter’s concern, but do not find it necessary to revise the final rule. The intent of paragraph (h) is to specifically prohibit replacing a ballast with another ballast having P/N BA08006–1 or BA08006– 28–1. By simply reinstalling a part removed during maintenance, the operator is not ‘‘installing’’ a different part. Gaining access and installing that part for other maintenance activities not associated with the AD is acceptable. Additional Change to NPRM Paragraph (f) of the NPRM refers to ‘‘Chapter 33–20–00, Section D,’’ of the airplane maintenance manual (AMM) as one approved repair method. We have removed the section reference (there is no Section D) in this final rule. Acceptable repair instructions are found in Chapter 33–22–00 of the applicable AMM. Conclusion We have carefully reviewed the available data, including the comments received, 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 Request To Clarify Parts Replacement Requirements Piedmont requests that we clarify paragraph (h) of the NPRM, which prohibits installing a ballast part number (P/N) BA08006–1 or BA08006– The following table provides the estimated costs for U.S. operators to comply with this AD. This AD will affect about 121 U.S.-registered airplanes. ESTIMATED COSTS, PER INSPECTION CYCLE Average labor rate per hour Action Work hours Inspection, per inspection cycle .......................... Ballast replacement (optional) ............................. 6 maximum .................. 2, per ballast 1 .............. 1NUMBER OF $80 80 sroberts on PROD1PC70 with RULES Sidewall ......................................................................................... Cabin ............................................................................................. Jkt 208001 Up to $480. Up to $41,344. Number of ballasts Airplane model Lavatory ......................................................................................... 15:49 Aug 22, 2006 None ............................. $486, per ballast .......... Cost per airplane BALLASTS PER AIRPLANE Area VerDate Aug<31>2005 Parts PO 00000 Frm 00025 DHC–8–100 DHC–8–300 DHC–8–100 DHC–8–300 DHC–8–100 DHC–8–300 Fmt 4700 and –200 ................................................................. ................................................................................. and –200 ................................................................. ................................................................................. and –200 ................................................................. ................................................................................. Sfmt 4700 E:\FR\FM\23AUR1.SGM 23AUR1 1 1 19 30 21 33 49334 Federal Register / Vol. 71, No. 163 / Wednesday, August 23, 2006 / Rules and Regulations 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. We are issuing this rulemaking under the authority described in Subtitle VII, Part A, Subpart III, Section 44701, ‘‘General requirements.’’ Under that section, Congress charges the FAA with promoting safe flight of civil aircraft in air commerce by prescribing regulations for practices, methods, and procedures the Administrator finds necessary for safety in air commerce. This regulation is within the scope of that authority because it addresses an unsafe condition that is likely to exist or develop on products identified in this rulemaking action. Regulatory Findings We have determined that this AD will not have federalism implications under Executive Order 13132. This AD will not have a substantial direct effect on the States, on the relationship between the national government and the States, or on the distribution of power and responsibilities among the various levels of government. For the reasons discussed above, I certify that this AD: (1) Is not a ‘‘significant regulatory action’’ under Executive Order 12866; (2) Is not a ‘‘significant rule’’ under DOT Regulatory Policies and Procedures (44 FR 11034, February 26, 1979); and (3) Will not have a significant economic impact, positive or negative, on a substantial number of small entities under the criteria of the Regulatory Flexibility Act. We prepared a regulatory evaluation of the estimated costs to comply with this AD and placed it in the AD docket. See the ADDRESSES section for a location to examine the regulatory evaluation. Applicability List of Subjects in 14 CFR Part 39 Unsafe Condition Air transportation, Aircraft, Aviation safety, Incorporation by reference, Safety. Adoption of the Amendment Accordingly, under the authority delegated to me by the Administrator, the FAA amends 14 CFR part 39 as follows: I PART 39—AIRWORTHINESS DIRECTIVES 1. The authority citation for part 39 continues to read as follows: I Authority : 49 U.S.C. 106(g), 40113, 44701. § 39.13 [Amended] 2. The Federal Aviation Administration (FAA) amends § 39.13 by adding the following new airworthiness directive (AD): I 2006–17–10 BOMBARDIER, INC. (Formerly de Havilland, Inc.): Amendment 39–14731. Docket No. FAA–2006–24290; Directorate Identifier 2005–NM–243–AD. Effective Date (a) This AD becomes effective September 27, 2006. Affected ADs (b) None. (c) This AD applies to Bombardier Model DHC–8–102, –103, –106, –201, –202, –301, –311, and –315 airplanes; certificated in any category; serial numbers 003 through 407 inclusive, 409 through 412 inclusive, and 414 through 433 inclusive; excluding those with Hunting interiors. (d) This AD results from reports of overheating due to arcing between the fluorescent tube pins and the lamp holder contacts. The tubes had not been properly seated during installation. We are issuing this AD to prevent fumes, traces of visible smoke, and fire at the fluorescent light tube assembly. Compliance (e) You are responsible for having the actions required by this AD performed within the compliance times specified, unless the actions have already been done. Inspection (f) Within 6,300 flight hours or 36 months after the effective date of this AD, whichever occurs first: Perform detailed inspections to detect signs of arcing of the fluorescent tube assemblies of the cabin, sidewalls, and lavatory, in accordance with the applicable temporary revision (TR) of the applicable maintenance program manual (MPM) identified in Table 1 of this AD. If any sign of arcing is found, repair before further flight using a method approved by either the Manager, New York Aircraft Certification Office (ACO), FAA; or Transport Canada Civil Aviation (or its delegated agent). Chapter 33–20–00 of the applicable airplane maintenance manual is one approved method. Repeat the inspection at intervals not to exceed 6,300 flight hours, until all ballast part numbers (P/Ns) BA08006–1 or BA08006–28–1 have been replaced in accordance with paragraph (g) of this AD. TABLE 1.—TRS Inspect the fluorescent tube assemblies of the— In accordance with task— To the de Havilland DASH 8 series— 100 MPM PSM 1–8–7 ............. 3320/03 MRB–146, dated August 31, 2004. MRB 2–24, dated August 31, 2004. MRB 3–155, dated August 31, 2004. MRB–147, dated May 3, 2005 3320/03 MRB 2–25, dated May 3, 2005 200 MPM PSM 1–82–7 ........... 3320/03 300 MPM PSM 1–83–7 ........... 3320/02 MRB 3–156, dated May 3, 2005. MRB–147, dated May 3, 2005 3320/02 MRB 2–25, dated May 3, 2005 200 MPM PSM 1–82–7 ........... 3320/02 Cabin ......................................... of de Havilland TR— MRB 3–156, dated May 3, 2005. 300 MPM PSM 1–83–7 ........... 3320/01 3320/01 3320/01 Lavatory .................................... sroberts on PROD1PC70 with RULES Sidewall ..................................... VerDate Aug<31>2005 15:49 Aug 22, 2006 Jkt 208001 PO 00000 Frm 00026 Fmt 4700 200 MPM PSM 1–82–7 ........... 300 MPM PSM 1–83–7 ........... 100 MPM PSM 1–8–7 ............. 100 MPM PSM 1–8–7 ............. Sfmt 4700 E:\FR\FM\23AUR1.SGM 23AUR1 For model— DHC–8–102, –103, and –106 airplanes. DHC–8–201 and –202 airplanes. DHC–8–301, –311, and –315 airplanes. DHC–8–102, –103, –106 airplanes. DHC–8–201 and –202 airplanes. DHC–8–301, –311, and –315 airplanes. DHC–8–102, –103, and –106 airplanes. DHC–8–201 and –202 airplanes. DHC–8–301, –311, and –315 airplanes. Federal Register / Vol. 71, No. 163 / Wednesday, August 23, 2006 / Rules and Regulations Note 1: For the purposes of this AD, a detailed inspection is: ‘‘An intensive examination of a specific item, installation, or assembly to detect damage, failure, or irregularity. Available lighting is normally supplemented with a direct source of good lighting at an intensity deemed appropriate. Inspection aids such as mirror, magnifying lenses, etc., may be necessary. Surface cleaning and elaborate procedures may be required.’’ Terminating Action (g) The repetitive inspections required by this AD may be terminated if all ballasts installed on the airplane have P/N BR9000– 21, installed in accordance with the Accomplishment Instructions of Bombardier Service Bulletin 8–33–51, Revision ‘A,’ dated 49335 April 20, 2005 (to replace ballast P/N BA08006–1), or 8–33–52, dated April 15, 2005 (to replace ballast P/N BA08006–28–1). Ballasts installed before the effective date of this AD are also acceptable if done in accordance with Bombardier Service Bulletin 8–33–51, dated August 16, 2002. (2) Before using any AMOC approved in accordance with § 39.19 on any airplane to which the AMOC applies, notify the appropriate principal inspector in the FAA Flight Standards Certificate Holding District Office. Parts Installation (h) As of the effective date of this AD: No person may install a ballast P/N BA08006–1 or BA08006–28–1 on any airplane. Related Information Alternative Methods of Compliance (AMOCs) (i)(1) The Manager, New York ACO, FAA, has the authority to approve AMOCs for this AD, if requested in accordance with the procedures found in 14 CFR 39.19. (j) Canadian airworthiness directive CF– 2004–26R1, dated September 28, 2005, also addresses the subject of this AD. Material Incorporated by Reference (k) You must use the service information identified in Table 2 of this AD to perform the actions that are required by this AD, unless the AD specifies otherwise. TABLE 2.—MATERIAL INCORPORATED BY REFERENCE de Havilland Temporary Revision— To the de Havilland DASH 8 Series— MRB–146, dated August 31, 2004 ........................................................... MRB–147, dated May 3, 2005 ................................................................. MRB 2–24, dated August 31, 2004 .......................................................... MRB 2–25, dated May 3, 2005 ................................................................ MRB 3–155, dated August 31, 2004 ........................................................ MRB 3–156, dated May 3, 2005 .............................................................. sroberts on PROD1PC70 with RULES (Page 2 of de Havilland Temporary Revision MRB–147, dated May 3, 2005, incorrectly refers to Series 300 airplanes; that reference should be to Series 100.) If the terminating action is accomplished, you must use Bombardier Service Bulletin 8–33–51, Revision ‘A,’ dated April 20, 2005; or Bombardier Service Bulletin 8–33–52, dated April 15, 2005, as applicable, to perform the optional terminating action specified in this AD. The Director of the Federal Register approved the incorporation by reference of these documents in accordance with 5 U.S.C. 552(a) and 1 CFR part 51. Contact Bombardier, Inc., Bombardier Regional Aircraft Division, 123 Garratt Boulevard, Downsview, Ontario M3K 1Y5, Canada, for a copy of this service information. You may review copies at the Docket Management Facility, U.S. Department of Transportation, 400 Seventh Street, SW., Room PL–401, Nassif Building, Washington, DC; on the Internet at http://dms.dot.gov; or at the National Archives and Records Administration (NARA). For information on the availability of this material at the NARA, call (202) 741–6030, or go to http:// www.archives.gov/federal_register/ code_of_federal_regulations/ ibr_locations.html. Issued in Renton, Washington, on August 14, 2006. Ali Bahrami, Manager, Transport Airplane Directorate, Aircraft Certification Service. [FR Doc. E6–13829 Filed 8–22–06; 8:45 am] BILLING CODE 4910–13–P VerDate Aug<31>2005 15:49 Aug 22, 2006 Jkt 208001 100 100 200 200 300 300 Maintenance Maintenance Maintenance Maintenance Maintenance Maintenance Program Program Program Program Program Program DEPARTMENT OF TRANSPORTATION Federal Aviation Administration 14 CFR Part 39 [Docket No. FAA–2006–24034; Directorate Identifier 2006–NE–05–AD; Amendment 39– 14729; AD 2006–17–08] RIN 2120–AA64 Airworthiness Directives; Pratt & Whitney PW4077D, PW4084D, PW4090, and PW4090–3 Turbofan Engines Federal Aviation Administration (FAA), Department of Transportation (DOT). ACTION: Final rule. AGENCY: SUMMARY: The FAA is adopting a new airworthiness directive (AD) for Pratt & Whitney (PW) PW4077D, PW4084D, PW4090, and PW4090–3 turbofan engines that were reassembled with certain previously used high pressure compressor (HPC) exit brush seal assembly parts and certain new or refurbished HPC exit diffuser air seal inner lands. This AD requires replacing the HPC exit inner and outer brush seal packs with new brush seal packs, or replacing the HPC exit brush seal assembly with a new HPC exit brush seal assembly. This AD results from a report of oil leaking into the high pressure turbine (HPT) interstage cavity and igniting, leading to an engine case penetration and engine in-flight shutdown. Although liberated engine PO 00000 Frm 00027 Fmt 4700 Sfmt 4700 Manual Manual Manual Manual Manual Manual PSM PSM PSM PSM PSM PSM 1–8–7. 1–8–7. 1–82–7. 1–82–7. 1–83–7. 1–83–7. parts did not penetrate the engine nacelle, we are issuing this AD to prevent uncontained engine failure, damage to the airplane, and injury to passengers. This AD becomes effective September 27, 2006. The Director of the Federal Register approved the incorporation by reference of certain publications listed in the regulations as of September 27, 2006. ADDRESSES: You can get the service information identified in this ad from Pratt & Whitney, 400 Main St., East Hartford, CT 06108; telephone (860) 565–8770; fax (860) 565–4503. You may examine the AD docket on the Internet at http://dms.dot.gov or in Room PL–401 on the plaza level of the Nassif Building, 400 Seventh Street, SW., Washington, DC. FOR FURTHER INFORMATION CONTACT: Antonio Cancelliere, Aerospace Engineer, Engine Certification Office, FAA, Engine and Propeller Directorate, 12 New England Executive Park, Burlington, MA 01803; telephone (781) 238–7751; fax (781) 238–7199. SUPPLEMENTARY INFORMATION: The FAA proposed to amend 14 CFR part 39 with a proposed airworthiness directive (AD). The proposed AD applies to Pratt & Whitney (PW) PW4077D, PW4084D, PW4090, and PW4090–3 turbofan engines that were reassembled with certain previously used HPC exit brush seal assembly parts and certain new or refurbished HPC exit diffuser air seal DATES: E:\FR\FM\23AUR1.SGM 23AUR1

Agencies

[Federal Register Volume 71, Number 163 (Wednesday, August 23, 2006)]
[Rules and Regulations]
[Pages 49332-49335]
From the Federal Register Online via the Government Printing Office [www.gpo.gov]
[FR Doc No: E6-13829]


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

DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2006-24290; Directorate Identifier 2005-NM-243-AD; 
Amendment 39-14731; AD 2006-17-10]
RIN 2120-AA64


Airworthiness Directives; Bombardier Model DHC-8-100, DHC-8-200, 
and DHC-8-300 Series 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 Bombardier Model DHC-8-100, DHC-8-200, and DHC-8-300 series 
airplanes. This AD requires repetitive inspections of the fluorescent 
light tube assemblies of the cabin, lavatory, and sidewall, and 
corrective actions if necessary. This AD also provides for optional 
terminating action for the repetitive inspections. This AD results from 
reports of overheating due to arcing between the fluorescent tube pins 
and the lamp holder contacts. The tubes had not been properly seated 
during installation. We are issuing this AD to prevent fumes, traces of 
visible smoke, and fire at the fluorescent light tube assembly.

DATES: This AD becomes effective September 27, 2006.
    The Director of the Federal Register approved the incorporation by 
reference of certain publications listed in the AD as of September 27, 
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

[[Page 49333]]

SW., Nassif Building, Room PL-401, Washington, DC.
    Contact Bombardier, Inc., Bombardier Regional Aircraft Division, 
123 Garratt Boulevard, Downsview, Ontario M3K 1Y5, Canada, for service 
information identified in this AD.

FOR FURTHER INFORMATION CONTACT: Douglas Wagner, Aerospace Engineer, 
Systems and Flight Test Branch, ANE-172, FAA, New York Aircraft 
Certification Office, 1600 Stewart Avenue, suite 410, Westbury, New 
York 11590; telephone (516) 228-7306; fax (516) 794-5531.

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 Bombardier 
Model DHC-8-100, DHC-8-200, and DHC-8-300 series airplanes. That NPRM 
was published in the Federal Register on April 4, 2006 (71 FR 16725). 
That NPRM proposed to require repetitive inspections of the fluorescent 
light tube assemblies of the cabin, lavatory, and sidewall, and 
corrective actions if necessary. That NPRM also proposed to provide for 
optional terminating action for the repetitive inspections.

Comments

    We provided the public the opportunity to participate in the 
development of this AD. We have considered the comments received.

Request To Extend Compliance Time

    Piedmont Airlines states that its C-check inspection interval can 
go up to 6,258 flight hours. Piedmont describes the grievous effect the 
NPRM compliance times will have on the airline. The NPRM specifies a 
compliance time of 5,000 flight hours or 36 months, whichever occurs 
first, for the initial compliance time, and repetitive intervals of 
5,000 flight hours. The commenter requests that the initial inspection 
be done within the next C-check or 36 months and that the repetitive 
interval be done at intervals not to exceed the next C-check.
    We agree to extend the compliance time, although we cannot refer to 
``the next C-check'' because the variability among operators' 
maintenance schedules would not guarantee that the required work would 
be done within an appropriate time. We have instead revised paragraph 
(f) of this final rule to require an initial compliance time of 6,300 
flight hours or 36 months, whichever occurs first, with a repetitive 
interval of 6,300 flight hours. We have determined that such an 
extension will not adversely affect safety, and will allow the work to 
be performed during regularly scheduled maintenance at a base where 
special equipment and trained maintenance personnel will be available 
if necessary.

Request To Clarify Parts Replacement Requirements

    Piedmont requests that we clarify paragraph (h) of the NPRM, which 
prohibits installing a ballast part number (P/N) BA08006-1 or BA08006-
28-1 as of the effective date of the AD. Piedmont questions whether 
that statement applies when parts are removed for other maintenance, or 
only when the part is replaced.
    We acknowledge the commenter's concern, but do not find it 
necessary to revise the final rule. The intent of paragraph (h) is to 
specifically prohibit replacing a ballast with another ballast having 
P/N BA08006-1 or BA08006-28-1. By simply reinstalling a part removed 
during maintenance, the operator is not ``installing'' a different 
part.
    Gaining access and installing that part for other maintenance 
activities not associated with the AD is acceptable.

Additional Change to NPRM

    Paragraph (f) of the NPRM refers to ``Chapter 33-20-00, Section 
D,'' of the airplane maintenance manual (AMM) as one approved repair 
method. We have removed the section reference (there is no Section D) 
in this final rule. Acceptable repair instructions are found in Chapter 
33-22-00 of the applicable AMM.

Conclusion

    We have carefully reviewed the available data, including the 
comments received, 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

    The following table provides the estimated costs for U.S. operators 
to comply with this AD. This AD will affect about 121 U.S.-registered 
airplanes.

                                      Estimated Costs, Per Inspection Cycle
----------------------------------------------------------------------------------------------------------------
                                                         Average labor
              Action                    Work hours       rate per hour         Parts          Cost per airplane
----------------------------------------------------------------------------------------------------------------
Inspection, per inspection cycle.  6 maximum..........             $80  None...............  Up to $480.
Ballast replacement (optional)...  2, per ballast \1\.              80  $486, per ballast..  Up to $41,344.
----------------------------------------------------------------------------------------------------------------


                   \1\Number of Ballasts Per Airplane
------------------------------------------------------------------------
                                                              Number of
               Area                     Airplane model         ballasts
------------------------------------------------------------------------
Lavatory.........................  DHC-8-100 and -200......            1
                                   DHC-8-300...............            1
Sidewall.........................  DHC-8-100 and -200......           19
                                   DHC-8-300...............           30
Cabin............................  DHC-8-100 and -200......           21
                                   DHC-8-300...............           33
------------------------------------------------------------------------


[[Page 49334]]

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.
    We are issuing this rulemaking under the authority described in 
Subtitle VII, Part A, Subpart III, Section 44701, ``General 
requirements.'' Under that section, Congress charges the FAA with 
promoting safe flight of civil aircraft in air commerce by prescribing 
regulations for practices, methods, and procedures the Administrator 
finds necessary for safety in air commerce. This regulation is within 
the scope of that authority because it addresses an unsafe condition 
that is likely to exist or develop on products identified in this 
rulemaking action.

Regulatory Findings

    We have determined that this AD will not have federalism 
implications under Executive Order 13132. This AD will not have a 
substantial direct effect on the States, on the relationship between 
the national government and the States, or on the distribution of power 
and responsibilities among the various levels of government.
    For the reasons discussed above, I certify that this AD:
    (1) Is not a ``significant regulatory action'' under Executive 
Order 12866;
    (2) Is not a ``significant rule'' under DOT Regulatory Policies and 
Procedures (44 FR 11034, February 26, 1979); and
    (3) Will not have a significant economic impact, positive or 
negative, on a substantial number of small entities under the criteria 
of the Regulatory Flexibility Act.
    We prepared a regulatory evaluation of the estimated costs to 
comply with this AD and placed it in the AD docket. See the ADDRESSES 
section for a location to examine the regulatory evaluation.

List of Subjects in 14 CFR Part 39

    Air transportation, Aircraft, Aviation safety, Incorporation by 
reference, Safety.

Adoption of the Amendment

0
Accordingly, under the authority delegated to me by the Administrator, 
the FAA amends 14 CFR part 39 as follows:

PART 39--AIRWORTHINESS DIRECTIVES

0
1. The authority citation for part 39 continues to read as follows:

    Authority : 49 U.S.C. 106(g), 40113, 44701.


Sec.  39.13  [Amended]

0
2. The Federal Aviation Administration (FAA) amends Sec.  39.13 by 
adding the following new airworthiness directive (AD):

2006-17-10 BOMBARDIER, INC. (Formerly de Havilland, Inc.): Amendment 
39-14731. Docket No. FAA-2006-24290; Directorate Identifier 2005-NM-
243-AD.

Effective Date

    (a) This AD becomes effective September 27, 2006.

Affected ADs

    (b) None.

Applicability

    (c) This AD applies to Bombardier Model DHC-8-102, -103, -106, -
201, -202, -301, -311, and -315 airplanes; certificated in any 
category; serial numbers 003 through 407 inclusive, 409 through 412 
inclusive, and 414 through 433 inclusive; excluding those with 
Hunting interiors.

Unsafe Condition

    (d) This AD results from reports of overheating due to arcing 
between the fluorescent tube pins and the lamp holder contacts. The 
tubes had not been properly seated during installation. We are 
issuing this AD to prevent fumes, traces of visible smoke, and fire 
at the fluorescent light tube assembly.

Compliance

    (e) You are responsible for having the actions required by this 
AD performed within the compliance times specified, unless the 
actions have already been done.

Inspection

    (f) Within 6,300 flight hours or 36 months after the effective 
date of this AD, whichever occurs first: Perform detailed 
inspections to detect signs of arcing of the fluorescent tube 
assemblies of the cabin, sidewalls, and lavatory, in accordance with 
the applicable temporary revision (TR) of the applicable maintenance 
program manual (MPM) identified in Table 1 of this AD. If any sign 
of arcing is found, repair before further flight using a method 
approved by either the Manager, New York Aircraft Certification 
Office (ACO), FAA; or Transport Canada Civil Aviation (or its 
delegated agent). Chapter 33-20-00 of the applicable airplane 
maintenance manual is one approved method. Repeat the inspection at 
intervals not to exceed 6,300 flight hours, until all ballast part 
numbers (P/Ns) BA08006-1 or BA08006-28-1 have been replaced in 
accordance with paragraph (g) of this AD.

                                                  Table 1.--TRs
----------------------------------------------------------------------------------------------------------------
                                        In
   Inspect the fluorescent tube     accordance                         To the de Havilland
        assemblies of the--         with task-- of de Havilland TR--     DASH 8 series--         For model--
 
----------------------------------------------------------------------------------------------------------------
Cabin.............................     3320/01  MRB-146, dated        100 MPM PSM 1-8-7...  DHC-8-102, -103, and
                                                 August 31, 2004.                            -106 airplanes.
                                       3320/01  MRB 2-24, dated       200 MPM PSM 1-82-7..  DHC-8-201 and -202
                                                 August 31, 2004.                            airplanes.
                                       3320/01  MRB 3-155, dated      300 MPM PSM 1-83-7..  DHC-8-301, -311, and
                                                 August 31, 2004.                            -315 airplanes.
Lavatory..........................     3320/03  MRB-147, dated May    100 MPM PSM 1-8-7...  DHC-8-102, -103, -
                                                 3, 2005.                                    106 airplanes.
                                       3320/03  MRB 2-25, dated May   200 MPM PSM 1-82-7..  DHC-8-201 and -202
                                                 3, 2005.                                    airplanes.
                                       3320/03  MRB 3-156, dated May  300 MPM PSM 1-83-7..  DHC-8-301, -311, and
                                                 3, 2005.                                    -315 airplanes.
Sidewall..........................     3320/02  MRB-147, dated May    100 MPM PSM 1-8-7...  DHC-8-102, -103, and
                                                 3, 2005.                                    -106 airplanes.
                                       3320/02  MRB 2-25, dated May   200 MPM PSM 1-82-7..  DHC-8-201 and -202
                                                 3, 2005.                                    airplanes.
                                       3320/02  MRB 3-156, dated May  300 MPM PSM 1-83-7..  DHC-8-301, -311, and
                                                 3, 2005.                                    -315 airplanes.
----------------------------------------------------------------------------------------------------------------



[[Page 49335]]

    Note 1: For the purposes of this AD, a detailed inspection is: 
``An intensive examination of a specific item, installation, or 
assembly to detect damage, failure, or irregularity. Available 
lighting is normally supplemented with a direct source of good 
lighting at an intensity deemed appropriate. Inspection aids such as 
mirror, magnifying lenses, etc., may be necessary. Surface cleaning 
and elaborate procedures may be required.''

Terminating Action

    (g) The repetitive inspections required by this AD may be 
terminated if all ballasts installed on the airplane have P/N 
BR9000-21, installed in accordance with the Accomplishment 
Instructions of Bombardier Service Bulletin 8-33-51, Revision `A,' 
dated April 20, 2005 (to replace ballast P/N BA08006-1), or 8-33-52, 
dated April 15, 2005 (to replace ballast P/N BA08006-28-1). Ballasts 
installed before the effective date of this AD are also acceptable 
if done in accordance with Bombardier Service Bulletin 8-33-51, 
dated August 16, 2002.

Parts Installation

    (h) As of the effective date of this AD: No person may install a 
ballast P/N BA08006-1 or BA08006-28-1 on any airplane.

Alternative Methods of Compliance (AMOCs)

    (i)(1) The Manager, New York ACO, FAA, has the authority to 
approve AMOCs for this AD, if requested in accordance with the 
procedures found in 14 CFR 39.19.
    (2) Before using any AMOC approved in accordance with Sec.  
39.19 on any airplane to which the AMOC applies, notify the 
appropriate principal inspector in the FAA Flight Standards 
Certificate Holding District Office.

Related Information

    (j) Canadian airworthiness directive CF-2004-26R1, dated 
September 28, 2005, also addresses the subject of this AD.

Material Incorporated by Reference

    (k) You must use the service information identified in Table 2 
of this AD to perform the actions that are required by this AD, 
unless the AD specifies otherwise.

              Table 2.--Material Incorporated by Reference
------------------------------------------------------------------------
                                            To the de Havilland DASH 8
   de Havilland Temporary Revision--                 Series--
------------------------------------------------------------------------
MRB-146, dated August 31, 2004.........  100 Maintenance Program Manual
                                          PSM 1-8-7.
MRB-147, dated May 3, 2005.............  100 Maintenance Program Manual
                                          PSM 1-8-7.
MRB 2-24, dated August 31, 2004........  200 Maintenance Program Manual
                                          PSM 1-82-7.
MRB 2-25, dated May 3, 2005............  200 Maintenance Program Manual
                                          PSM 1-82-7.
MRB 3-155, dated August 31, 2004.......  300 Maintenance Program Manual
                                          PSM 1-83-7.
MRB 3-156, dated May 3, 2005...........  300 Maintenance Program Manual
                                          PSM 1-83-7.
------------------------------------------------------------------------

    (Page 2 of de Havilland Temporary Revision MRB-147, dated May 3, 
2005, incorrectly refers to Series 300 airplanes; that reference 
should be to Series 100.) If the terminating action is accomplished, 
you must use Bombardier Service Bulletin 8-33-51, Revision `A,' 
dated April 20, 2005; or Bombardier Service Bulletin 8-33-52, dated 
April 15, 2005, as applicable, to perform the optional terminating 
action specified in this AD. The Director of the Federal Register 
approved the incorporation by reference of these documents in 
accordance with 5 U.S.C. 552(a) and 1 CFR part 51. Contact 
Bombardier, Inc., Bombardier Regional Aircraft Division, 123 Garratt 
Boulevard, Downsview, Ontario M3K 1Y5, Canada, for a copy of this 
service information. You may review copies at the Docket Management 
Facility, U.S. Department of Transportation, 400 Seventh Street, 
SW., Room PL-401, Nassif Building, Washington, DC; on the Internet 
at http://dms.dot.gov; or at the National Archives and Records 
Administration (NARA). For information on the availability of this 
material at the NARA, call (202) 741-6030, or go to http://
www.archives.gov/federal_register/code_of_federal_regulations/
ibr_locations.html.

    Issued in Renton, Washington, on August 14, 2006.
Ali Bahrami,
Manager, Transport Airplane Directorate, Aircraft Certification 
Service.
[FR Doc. E6-13829 Filed 8-22-06; 8:45 am]
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