Airworthiness Directives; British Aerospace Regional Aircraft Model HP.137 Jetstream Mk.1, Jetstream Series 200 and 3101, and Jetstream Model 3201 Airplanes, 32988-32990 [E8-12412]

Download as PDF 32988 Federal Register / Vol. 73, No. 113 / Wednesday, June 11, 2008 / Rules and Regulations 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 summary of the costs to comply with this AD (and other information as included in the Regulatory Evaluation) and placed it in the AD Docket. You may get a copy of this summary by sending a request to us at the address listed under ADDRESSES. Include ‘‘Docket No. FAA–2008–0306; Directorate Identifier 2008–CE–014– AD’’ in your request. List of Subjects in 14 CFR Part 39 Air transportation, Aircraft, Aviation safety, Incorporation by reference, Safety. Adoption of the Amendment the Federal Aviation Administration amends part 39 of the Federal Aviation Regulations (14 CFR part 39) as follows: PART 39—AIRWORTHINESS DIRECTIVES Accordingly, under the authority delegated to me by the Administrator, (c) This AD applies to Model 525 airplanes, serial numbers 525–0600 through 525–0662, that are certificated in any category. Affected ADs (b) None. 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. FAA amends § 39.13 by adding the following new AD: I 2008–12–01 Cessna Aircraft Company: Amendment 39–15544; Docket No. FAA–2008–0306; Directorate Identifier 2008–CE–014–AD. Effective Date (a) This AD becomes effective on July 16, 2008. I Applicability Unsafe Condition (d) This AD results from a report that firewall sealant may not have been applied between the aft firewall assembly and seal assembly during manufacture of certain Model 525 airplanes. We are issuing this AD to detect and correct missing firewall sealant between the aft firewall assembly and seal assembly, which could result in failure of the fire extinguishing system to prevent the spread of fire through the firewall gap. This failure could lead to an uncontrolled fire. Compliance (e) To address this problem, you must do the following, unless already done: Actions Compliance Procedures (1) Inspect between the 6352225 aft firewall assembly and 6352226 seal assembly for missing firewall sealant. Within the next 60 hours time-in-service (TIS) after July 16, 2008 (the effective date of this AD) or within 60 days after July 16, 2008 (the effective date of this AD), whichever occurs first. Before further flight after the inspection required by paragraph (e)(1) of this AD. Follow Cessna Aircraft Company Citation Service Letter SL525–71–05, Revision 1, dated February 6, 2008. (2) If, as a result of the inspection required by paragraph (e)(1) of this AD, you find there is missing firewall sealant between the 6352225 aft firewall assembly and 6352226 seal assembly, seal with U000117S firewall sealant in the gap between the 6352225 aft firewall assembly and 6352226 seal assembly. yshivers on PROD1PC62 with RULES Alternative Methods of Compliance (AMOCs) (f) The Manager, Wichita Aircraft Certification Office (ACO), FAA, has the authority to approve AMOCs for this AD, if requested using the procedures found in 14 CFR 39.19. Send information to ATTN: James Galstad, Aerospace Engineer, Wichita ACO, 1801 Airport Road, Room 100, Wichita, Kansas 67209; telephone: (316) 946–4135; fax: (316) 946–4107. Before using any approved AMOC on any airplane to which the AMOC applies, notify your appropriate principal inspector (PI) in the FAA Flight Standards District Office (FSDO), or lacking a PI, your local FSDO. Material Incorporated by Reference (g) You must use Cessna Aircraft Company Citation Service Letter SL525–71–05, Revision 1, dated February 6, 2008, to do the actions required by this AD, unless the AD specifies otherwise. (1) The Director of the Federal Register approved the incorporation by reference of this service information under 5 U.S.C. 552(a) and 1 CFR part 51. (2) For service information identified in this AD, contact Cessna Aircraft Company, Product Support, P.O. Box 7706, Wichita, Kansas 67277; telephone: (316) 517–5800; fax: (316) 942–9006. VerDate Aug<31>2005 15:03 Jun 10, 2008 Jkt 214001 Follow Cessna Aircraft Company Citation Service Letter SL525–71–05, Revision 1, dated February 6, 2008. (3) You may review copies at the FAA, Central Region, Office of the Regional Counsel, 901 Locust, Kansas City, Missouri 64106; or at the National Archives and Records Administration (NARA). For information on the availability of this material at NARA, call 202–741–6030, or go to: https://www.archives.gov/federal_register/ code_of_federal_regulations/ ibr_locations.html. DEPARTMENT OF TRANSPORTATION Issued in Kansas City, Missouri, on May 27, 2008. David R. Showers, Acting Manager, Small Airplane Directorate, Aircraft Certification Service. [FR Doc. E8–12305 Filed 6–10–08; 8:45 am] Airworthiness Directives; British Aerospace Regional Aircraft Model HP.137 Jetstream Mk.1, Jetstream Series 200 and 3101, and Jetstream Model 3201 Airplanes BILLING CODE 4910–13–P PO 00000 Federal Aviation Administration 14 CFR Part 39 [Docket No. FAA–2008–0369; Directorate Identifier 2008–CE–015–AD; Amendment 39–15545; AD 2008–12–02] RIN 2120–AA64 Federal Aviation Administration (FAA), Department of Transportation (DOT). ACTION: Final Rule. AGENCY: SUMMARY: We are adopting a new airworthiness directive (AD) for the products listed above. 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 Frm 00004 Fmt 4700 Sfmt 4700 E:\FR\FM\11JNR1.SGM 11JNR1 Federal Register / Vol. 73, No. 113 / Wednesday, June 11, 2008 / Rules and Regulations product. The MCAI describes the unsafe condition as: A failure mode has been identified following the examination of parts from another aircraft type (Jetstream 4100 series) that can lead to the loss of a nose-wheel. The Jetstream (HP.137) Mk1, 200, 3100 and 3200 series use a similar method for retaining the wheel assemblies on the landing gear axle and can therefore experience the same type of failure, i.e. a combination of excessive wear and/or adverse tolerances on the axle inner cone, outer cone or wheel hub splined sleeve cones resulting in the loss of the critical gap between the inner flange face of the wheel outer cone and the axle end face. If this gap is lost, it results in the wheel having free play along the length of the axle. This condition, if not corrected, can cause the wheel nut lock plate to break, leading to the wheel retention nut unscrewing and subsequent separation of the nose wheel from the landing gear axle. We are issuing this AD to require actions to correct the unsafe condition on these products. DATES: This AD becomes effective July 16, 2008. On July 16, 2008, the Director of the Federal Register approved the incorporation by reference of certain publications listed in this AD. ADDRESSES: You may examine the AD docket on the Internet at https:// 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 FURTHER INFORMATION CONTACT: Taylor Martin, Aerospace Engineer, FAA, Small Airplane Directorate, 901 Locust, Room 301, Kansas City, Missouri 64106; telephone: (816) 329– 4138; fax: (816) 329–4090. SUPPLEMENTARY INFORMATION: yshivers on PROD1PC62 with RULES 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 March 31, 2008 (73 FR 16790). That NPRM proposed to correct an unsafe condition for the specified products. The MCAI states: A failure mode has been identified following the examination of parts from another aircraft type (Jetstream 4100 series) that can lead to the loss of a nose-wheel. The Jetstream (HP.137) Mk1, 200, 3100 and 3200 series use a similar method for retaining the wheel assemblies on the landing gear axle and can therefore experience the same type of failure, i.e. a combination of excessive wear and/or adverse tolerances on the axle inner cone, outer cone or wheel hub splined VerDate Aug<31>2005 15:03 Jun 10, 2008 Jkt 214001 sleeve cones resulting in the loss of the critical gap between the inner flange face of the wheel outer cone and the axle end face. If this gap is lost, it results in the wheel having free play along the length of the axle. This condition, if not corrected, can cause the wheel nut lock plate to break, leading to the wheel retention nut unscrewing and subsequent separation of the nose wheel from the landing gear axle. For the reasons described above, this AD requires repetitive inspections of the nose landing gear to ensure that the wheels are correctly retained and, depending on findings, replacement of worn parts. You may obtain further information by examining the MCAI in the AD docket. Comments We gave the public the opportunity to participate in developing this AD. We received no comments on the NPRM or on the determination of the cost to the public. Conclusion We reviewed the available data and determined that air safety and the public interest require adopting the AD as proposed. Differences Between This AD and the MCAI or Service Information We have reviewed the MCAI and related service information and, in general, agree with their substance. But we might have found it necessary to use different words from those in the MCAI to ensure the AD is clear for U.S. operators and is enforceable. In making these changes, we do not intend to differ substantively from the information provided in the MCAI and related service information. We might also have required different actions in this AD from those in the MCAI in order to follow FAA policies. Any such differences are highlighted in a NOTE within the AD. Costs of Compliance Based on the service information, we estimate that this AD will affect 190 products of U.S. registry. We also estimate that it will take about 1 workhour per product to comply with basic requirements of this AD. The average labor rate is $80 per work-hour. Based on these figures, we estimate the cost of this AD to the U.S. operators to be $15,200 or $80 per product. In addition, we estimate that any necessary follow-on actions would take about 1 work-hour and require parts costing $250, for a cost of $330 per product. We have no way of determining the number of products that may need these actions. PO 00000 Frm 00005 Fmt 4700 Sfmt 4700 32989 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 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 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. Examining the AD Docket You may examine the AD docket on the Internet at https:// www.regulations.gov; or in person at the Docket Management Facility between 9 a.m. and 5 p.m., Monday through Friday, except Federal holidays. The AD docket contains the NPRM, the regulatory evaluation, any comments received, and other information. The street address for the Docket Office (telephone (800) 647–5527) is in the ADDRESSES section. Comments will be available in the AD docket shortly after receipt. E:\FR\FM\11JNR1.SGM 11JNR1 32990 Federal Register / Vol. 73, No. 113 / Wednesday, June 11, 2008 / Rules and Regulations Affected ADs (b) None. List of Subjects in 14 CFR Part 39 Air transportation, Aircraft, Aviation safety, Incorporation by reference, Safety. Applicability (c) This AD applies to Model HP.137 Jetstream Mk.1, Jetstream Series 200 and 3101, and Jetstream Model 3201 airplanes, all serial numbers, certificated in any category. Adoption of the Amendment Accordingly, under the authority delegated to me by the Administrator, the FAA amends 14 CFR part 39 as follows: I Subject (d) Air Transport Association of America (ATA) Code 32: Landing Gear. 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 FAA amends § 39.13 by adding the following new AD: I 2008–12–02 British Aerospace Regional Aircraft: Amendment 39–15545; Docket No. FAA–2008–0369; Directorate Identifier 2008–CE–015–AD. Effective Date (a) This airworthiness directive (AD) becomes effective July 16, 2008. Reason (e) The mandatory continuing airworthiness information (MCAI) states: A failure mode has been identified following the examination of parts from another aircraft type (Jetstream 4100 series) that can lead to the loss of a nose-wheel. The Jetstream (HP.137) Mk1, 200, 3100 and 3200 series use a similar method for retaining the wheel assemblies on the landing gear axle and can therefore experience the same type of failure, i.e. a combination of excessive wear and/or adverse tolerances on the axle inner cone, outer cone or wheel hub splined sleeve cones resulting in the loss of the critical gap between the inner flange face of the wheel outer cone and the axle end face. If this gap is lost, it results in the wheel having free play along the length of the axle. This condition, if not corrected, can cause the wheel nut lock plate to break, leading to the wheel retention nut unscrewing and subsequent separation of the nose wheel from the landing gear axle. For the reasons described above, this AD requires repetitive inspections of the nose landing gear to ensure that the wheels are correctly retained and, depending on findings, replacement of worn parts. Actions and Compliance (f) Unless already done, do the following actions: (1) Within the next 3 months after July 16, 2008 (the effective date of this AD), initially inspect the left and right nose wheel attachments to the axle following British Aerospace Jetstream Series 3100 and 3200 Service Bulletin 32–JA070241, dated July 13, 2007. (2) Repetitively thereafter inspect the left and right nose wheel attachments to the axle at the intervals specified in Table 1 of this AD following British Aerospace Jetstream Series 3100 and 3200 Service Bulletin 32– JA070241, dated July 13, 2007. If during any repetitive inspection the gap measurement changes from the previous inspection measurement, adjust the repetitive inspection interval as necessary based on Table 1 of this AD. TABLE 1.—REPETITIVE INSPECTION INTERVALS If the measured gap size is: Then repetitively inspect at the following intervals: 0.002 through 0.005 inches (0.05 through 0.13 mm) .............................. More than 0.005 through 0.010 inches (0.13 through 0.25 mm) ............. More than 0.010 through 0.020 inches (0.25 through 0.51 mm) ............. More than 0.020 inches (0.51 mm) .......................................................... Within Within Within Within (3) Before further flight, if during any of the inspections required in paragraphs (f)(1) or (f)(2) of this AD you find the gap between the inner flange of the outer cone and the axle end face is less than 0.002 inches (0.05 mm), replace all worn parts. Note 1: Replacement of parts does not constitute terminating action for the inspection requirements of this AD. FAA AD Differences Note 2: This AD differs from the MCAI and/or service information as follows: No differences. yshivers on PROD1PC62 with RULES Other FAA AD Provisions (g) The following provisions also apply to this AD: (1) Alternative Methods of Compliance (AMOCs): The Manager, Standards Office, FAA, has the authority to approve AMOCs for this AD, if requested using the procedures found in 14 CFR 39.19. Send information to ATTN: Taylor Martin, Aerospace Engineer, FAA, Small Airplane Directorate, 901 Locust, Room 301, Kansas City, Missouri 64106; telephone: (816) 329–4138; fax: (816) 329– 4090. Before using any approved AMOC on any airplane to which the AMOC applies, notify your appropriate principal inspector (PI) in the FAA Flight Standards District VerDate Aug<31>2005 15:03 Jun 10, 2008 Jkt 214001 500 hours time-in-service (TIS). 1,000 hours TIS. 2,000 hours TIS. 3,000 hours TIS. Office (FSDO), or lacking a PI, your local FSDO. (2) Airworthy Product: For any requirement in this AD to obtain corrective actions from a manufacturer or other source, use these actions if they are FAA-approved. Corrective actions are considered FAA-approved if they are approved by the State of Design Authority (or their delegated agent). You are required to assure the product is airworthy before it is returned to service. (3) Reporting Requirements: For any reporting requirement in this AD, under the provisions of the Paperwork Reduction Act (44 U.S.C. 3501 et seq.), the Office of Management and Budget (OMB) has approved the information collection requirements and has assigned OMB Control Number 2120–0056. Related Information (h) Refer to MCAI European Aviation Safety Agency (EASA) AD No: 2008–0037, dated February 22, 2008; and British Aerospace Jetstream Series 3100 and 3200 Service Bulletin 32–JA070241, dated July 13, 2007, for related information. Material Incorporated by Reference (i) You must use British Aerospace Jetstream Series 3100 and 3200 Service Bulletin 32–JA070241, dated July 13, 2007, to PO 00000 Frm 00006 Fmt 4700 Sfmt 4700 do the actions required by this AD, unless the AD specifies otherwise. (1) The Director of the Federal Register approved the incorporation by reference of this service information under 5 U.S.C. 552(a) and 1 CFR part 51. (2) For service information identified in this AD, contact Project Management Group, Customer Information Department, BAE SYSTEMS (OPERATIONS), Prestwick International Airport, Ayrshire, KA9 2RW, Scotland; telephone: +44 1292 675207; fax: +44 1292 675704; e-mail: RApublications@baesystems.com. (3) You may review copies at the FAA, Central Region, Office of the Regional Counsel, 901 Locust, Room 506, Kansas City, Missouri 64106; or at the National Archives and Records Administration (NARA). For information on the availability of this material at NARA, call 202–741–6030, or go to: https://www.archives.gov/federal-register/ cfr/ibr-locations.html. Issued in Kansas City, Missouri, on May 28, 2008. David R. Showers, Acting Manager, Small Airplane Directorate, Aircraft Certification Service. [FR Doc. E8–12412 Filed 6–10–08; 8:45 am] BILLING CODE 4910–13–P E:\FR\FM\11JNR1.SGM 11JNR1

Agencies

[Federal Register Volume 73, Number 113 (Wednesday, June 11, 2008)]
[Rules and Regulations]
[Pages 32988-32990]
From the Federal Register Online via the Government Printing Office [www.gpo.gov]
[FR Doc No: E8-12412]


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

DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2008-0369; Directorate Identifier 2008-CE-015-AD; 
Amendment 39-15545; AD 2008-12-02]
RIN 2120-AA64


Airworthiness Directives; British Aerospace Regional Aircraft 
Model HP.137 Jetstream Mk.1, Jetstream Series 200 and 3101, and 
Jetstream Model 3201 Airplanes

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

ACTION: Final Rule.

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

SUMMARY: We are adopting a new airworthiness directive (AD) for the 
products listed above. 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

[[Page 32989]]

product. The MCAI describes the unsafe condition as:

    A failure mode has been identified following the examination of 
parts from another aircraft type (Jetstream 4100 series) that can 
lead to the loss of a nose-wheel. The Jetstream (HP.137) Mk1, 200, 
3100 and 3200 series use a similar method for retaining the wheel 
assemblies on the landing gear axle and can therefore experience the 
same type of failure, i.e. a combination of excessive wear and/or 
adverse tolerances on the axle inner cone, outer cone or wheel hub 
splined sleeve cones resulting in the loss of the critical gap 
between the inner flange face of the wheel outer cone and the axle 
end face. If this gap is lost, it results in the wheel having free 
play along the length of the axle. This condition, if not corrected, 
can cause the wheel nut lock plate to break, leading to the wheel 
retention nut unscrewing and subsequent separation of the nose wheel 
from the landing gear axle.

    We are issuing this AD to require actions to correct the unsafe 
condition on these products.

DATES: This AD becomes effective July 16, 2008.
    On July 16, 2008, the Director of the Federal Register approved the 
incorporation by reference of certain publications listed in this AD.

ADDRESSES: You may examine the AD docket on the Internet at https://
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 FURTHER INFORMATION CONTACT: Taylor Martin, Aerospace Engineer, 
FAA, Small Airplane Directorate, 901 Locust, Room 301, Kansas City, 
Missouri 64106; telephone: (816) 329-4138; fax: (816) 329-4090.

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 March 31, 2008 (73 
FR 16790). That NPRM proposed to correct an unsafe condition for the 
specified products. The MCAI states:

    A failure mode has been identified following the examination of 
parts from another aircraft type (Jetstream 4100 series) that can 
lead to the loss of a nose-wheel. The Jetstream (HP.137) Mk1, 200, 
3100 and 3200 series use a similar method for retaining the wheel 
assemblies on the landing gear axle and can therefore experience the 
same type of failure, i.e. a combination of excessive wear and/or 
adverse tolerances on the axle inner cone, outer cone or wheel hub 
splined sleeve cones resulting in the loss of the critical gap 
between the inner flange face of the wheel outer cone and the axle 
end face. If this gap is lost, it results in the wheel having free 
play along the length of the axle. This condition, if not corrected, 
can cause the wheel nut lock plate to break, leading to the wheel 
retention nut unscrewing and subsequent separation of the nose wheel 
from the landing gear axle.
    For the reasons described above, this AD requires repetitive 
inspections of the nose landing gear to ensure that the wheels are 
correctly retained and, depending on findings, replacement of worn 
parts.

    You may obtain further information by examining the MCAI in the AD 
docket.

Comments

    We gave the public the opportunity to participate in developing 
this AD. We received no comments on the NPRM or on the determination of 
the cost to the public.

Conclusion

    We reviewed the available data and determined that air safety and 
the public interest require adopting the AD as proposed.

Differences Between This AD and the MCAI or Service Information

    We have reviewed the MCAI and related service information and, in 
general, agree with their substance. But we might have found it 
necessary to use different words from those in the MCAI to ensure the 
AD is clear for U.S. operators and is enforceable. In making these 
changes, we do not intend to differ substantively from the information 
provided in the MCAI and related service information.
    We might also have required different actions in this AD from those 
in the MCAI in order to follow FAA policies. Any such differences are 
highlighted in a NOTE within the AD.

Costs of Compliance

    Based on the service information, we estimate that this AD will 
affect 190 products of U.S. registry. We also estimate that it will 
take about 1 work-hour per product to comply with basic requirements of 
this AD. The average labor rate is $80 per work-hour.
    Based on these figures, we estimate the cost of this AD to the U.S. 
operators to be $15,200 or $80 per product.
    In addition, we estimate that any necessary follow-on actions would 
take about 1 work-hour and require parts costing $250, for a cost of 
$330 per product. We have no way of determining the number of products 
that may need these actions.

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 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 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.

Examining the AD Docket

    You may examine the AD docket on the Internet at https://
www.regulations.gov; or in person at the Docket Management Facility 
between 9 a.m. and 5 p.m., Monday through Friday, except Federal 
holidays. The AD docket contains the NPRM, the regulatory evaluation, 
any comments received, and other information. The street address for 
the Docket Office (telephone (800) 647-5527) is in the ADDRESSES 
section. Comments will be available in the AD docket shortly after 
receipt.

[[Page 32990]]

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 FAA amends Sec.  39.13 by adding the following new AD:

2008-12-02 British Aerospace Regional Aircraft: Amendment 39-15545; 
Docket No. FAA-2008-0369; Directorate Identifier 2008-CE-015-AD.

Effective Date

    (a) This airworthiness directive (AD) becomes effective July 16, 
2008.

Affected ADs

    (b) None.

Applicability

    (c) This AD applies to Model HP.137 Jetstream Mk.1, Jetstream 
Series 200 and 3101, and Jetstream Model 3201 airplanes, all serial 
numbers, certificated in any category.

Subject

    (d) Air Transport Association of America (ATA) Code 32: Landing 
Gear.

Reason

    (e) The mandatory continuing airworthiness information (MCAI) 
states:
    A failure mode has been identified following the examination of 
parts from another aircraft type (Jetstream 4100 series) that can 
lead to the loss of a nose-wheel. The Jetstream (HP.137) Mk1, 200, 
3100 and 3200 series use a similar method for retaining the wheel 
assemblies on the landing gear axle and can therefore experience the 
same type of failure, i.e. a combination of excessive wear and/or 
adverse tolerances on the axle inner cone, outer cone or wheel hub 
splined sleeve cones resulting in the loss of the critical gap 
between the inner flange face of the wheel outer cone and the axle 
end face. If this gap is lost, it results in the wheel having free 
play along the length of the axle. This condition, if not corrected, 
can cause the wheel nut lock plate to break, leading to the wheel 
retention nut unscrewing and subsequent separation of the nose wheel 
from the landing gear axle.
    For the reasons described above, this AD requires repetitive 
inspections of the nose landing gear to ensure that the wheels are 
correctly retained and, depending on findings, replacement of worn 
parts.

Actions and Compliance

    (f) Unless already done, do the following actions:
    (1) Within the next 3 months after July 16, 2008 (the effective 
date of this AD), initially inspect the left and right nose wheel 
attachments to the axle following British Aerospace Jetstream Series 
3100 and 3200 Service Bulletin 32-JA070241, dated July 13, 2007.
    (2) Repetitively thereafter inspect the left and right nose 
wheel attachments to the axle at the intervals specified in Table 1 
of this AD following British Aerospace Jetstream Series 3100 and 
3200 Service Bulletin 32-JA070241, dated July 13, 2007. If during 
any repetitive inspection the gap measurement changes from the 
previous inspection measurement, adjust the repetitive inspection 
interval as necessary based on Table 1 of this AD.

                Table 1.--Repetitive Inspection Intervals
------------------------------------------------------------------------
                                           Then repetitively inspect at
      If the measured gap size is:           the following intervals:
------------------------------------------------------------------------
0.002 through 0.005 inches (0.05         Within 500 hours time-in-
 through 0.13 mm).                        service (TIS).
More than 0.005 through 0.010 inches     Within 1,000 hours TIS.
 (0.13 through 0.25 mm).
More than 0.010 through 0.020 inches     Within 2,000 hours TIS.
 (0.25 through 0.51 mm).
More than 0.020 inches (0.51 mm).......  Within 3,000 hours TIS.
------------------------------------------------------------------------

    (3) Before further flight, if during any of the inspections 
required in paragraphs (f)(1) or (f)(2) of this AD you find the gap 
between the inner flange of the outer cone and the axle end face is 
less than 0.002 inches (0.05 mm), replace all worn parts.

    Note 1: Replacement of parts does not constitute terminating 
action for the inspection requirements of this AD.

FAA AD Differences

    Note 2: This AD differs from the MCAI and/or service information 
as follows: No differences.

Other FAA AD Provisions

    (g) The following provisions also apply to this AD:
    (1) Alternative Methods of Compliance (AMOCs): The Manager, 
Standards Office, FAA, has the authority to approve AMOCs for this 
AD, if requested using the procedures found in 14 CFR 39.19. Send 
information to ATTN: Taylor Martin, Aerospace Engineer, FAA, Small 
Airplane Directorate, 901 Locust, Room 301, Kansas City, Missouri 
64106; telephone: (816) 329-4138; fax: (816) 329-4090. Before using 
any approved AMOC on any airplane to which the AMOC applies, notify 
your appropriate principal inspector (PI) in the FAA Flight 
Standards District Office (FSDO), or lacking a PI, your local FSDO.
    (2) Airworthy Product: For any requirement in this AD to obtain 
corrective actions from a manufacturer or other source, use these 
actions if they are FAA-approved. Corrective actions are considered 
FAA-approved if they are approved by the State of Design Authority 
(or their delegated agent). You are required to assure the product 
is airworthy before it is returned to service.
    (3) Reporting Requirements: For any reporting requirement in 
this AD, under the provisions of the Paperwork Reduction Act (44 
U.S.C. 3501 et seq.), the Office of Management and Budget (OMB) has 
approved the information collection requirements and has assigned 
OMB Control Number 2120-0056.

Related Information

    (h) Refer to MCAI European Aviation Safety Agency (EASA) AD No: 
2008-0037, dated February 22, 2008; and British Aerospace Jetstream 
Series 3100 and 3200 Service Bulletin 32-JA070241, dated July 13, 
2007, for related information.

Material Incorporated by Reference

    (i) You must use British Aerospace Jetstream Series 3100 and 
3200 Service Bulletin 32-JA070241, dated July 13, 2007, to do the 
actions required by this AD, unless the AD specifies otherwise.
    (1) The Director of the Federal Register approved the 
incorporation by reference of this service information under 5 
U.S.C. 552(a) and 1 CFR part 51.
    (2) For service information identified in this AD, contact 
Project Management Group, Customer Information Department, BAE 
SYSTEMS (OPERATIONS), Prestwick International Airport, Ayrshire, KA9 
2RW, Scotland; telephone: +44 1292 675207; fax: +44 1292 675704; e-
mail: RApublications@baesystems.com.
    (3) You may review copies at the FAA, Central Region, Office of 
the Regional Counsel, 901 Locust, Room 506, Kansas City, Missouri 
64106; or at the National Archives and Records Administration 
(NARA). For information on the availability of this material at 
NARA, call 202-741-6030, or go to: https://www.archives.gov/federal-
register/cfr/ibr-locations.html.

    Issued in Kansas City, Missouri, on May 28, 2008.
David R. Showers,
Acting Manager, Small Airplane Directorate, Aircraft Certification 
Service.
[FR Doc. E8-12412 Filed 6-10-08; 8:45 am]
BILLING CODE 4910-13-P
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