[Federal Register Volume 60, Number 246 (Friday, December 22, 1995)]
[Rules and Regulations]
[Pages 66485-66487]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 95-31201]
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DEPARTMENT OF TRANSPORTATION
14 CFR Part 39
[Docket No. 95-CE-27-AD; Amendment 39-9443; AD 95-24-13]
Airworthiness Directives; Jetstream Aircraft Limited HP137 Mk1,
Jetstream Series 200, and Jetstream Models 3101 and 3201 Airplanes.
AGENCY: Federal Aviation Administration, DOT.
ACTION: Final rule.
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SUMMARY: This amendment adopts a new airworthiness directive (AD) that
applies to Jetstream Aircraft Limited (JAL) HP137 Mk1, Jetstream Series
200, and Jetstream Models 3101 and 3201 Airplanes. This action requires
inspecting (one-time) the threaded portion of the aileron mounting
spigots for cracks, replacing any cracked spigots, and replacing the
securing nut assemblies with newly designed special nut assemblies and
new split pins. Reports of cracked aileron mounting spigots caused by
stress corrosion prompted this action. The actions specified by this AD
are intended to prevent damage to the aileron control systems, which if
not detected and corrected, could cause loss of lateral control and
eventual loss of control of the airplane.
DATES: Effective January 17, 1996.
The incorporation by reference of certain publications listed in
the regulations is approved by the Director of the Federal Register as
of January 17, 1996.
ADDRESSES: Service information that applies to this AD may be obtained
from Jetstream Aircraft Limited, Prestwick International Airport,
Ayrshire, KA9 2RW, Scotland, telephone (44-292) 79888; facsimile (44-
292) 79703; or Jetstream Aircraft Inc., Librarian, P.O. Box 16029,
Dulles International Airport, Washington, D.C. 20041-6029; telephone
(703) 406-1161; facsimile (703) 406-1469. This information may also be
examined at the Federal Aviation Administration (FAA), Central Region,
Office of the Assistant Chief Counsel, Attention: Rules Docket 95-CE-
27-AD, Room 1558, 601 E. 12th Street, Kansas City, Missouri 64106; or
at the Office of the Federal Register, 800 North Capitol Street, NW.,
suite 700, Washington, DC.
FOR FURTHER INFORMATION CONTACT: Ms. Dorenda Baker, Program Officer,
Brussels Aircraft Certification Office, FAA, Europe, Africa, and Middle
East Office, c/o American Embassy, B-1000 Brussels, Belgium; telephone
(322) 508.2715; facsimile (322) 230.6899; or Mr. Sam Lovell, Project
Officer, Small Airplane Directorate, Airplane Certification Service,
FAA, 1201 Walnut, suite 900, Kansas City, Missouri 64105; telephone
(816) 426-6934; facsimile (816) 426-2169.
SUPPLEMENTARY INFORMATION: A proposal to amend part 39 of the Federal
Aviation Regulations (14 CFR part 39) to include an AD that would apply
to JAL HP 137 Mk1, Jetstream series 200, and Jetstream Models 3101 and
3201 airplanes was published in the Federal Register on July 25, 1995
(60 FR 37966). The action proposed to require inspecting (one-time) the
threaded portion of the aileron mounting spigots for cracks, replacing
any cracked spigots, and replacing the securing nut assemblies with
newly designed special nut assemblies and new split pins.
Accomplishment of the proposed action would be in accordance with
Jetstream Service Bulletin (SB) 57-JA 921140, which incorporates the
following pages and revision levels:
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Pages Revision level Date
----------------------------------------------------------------------------------------------------------------
4, 5, 8, 9, 10, 12, 13 and 14........... Original Issue...................... Feb. 24, 1993.
1, 2, 3, 6 7, and 11.................... Revision 1.......................... Feb. 3, 1994.
----------------------------------------------------------------------------------------------------------------
[[Page 66486]]
Interested persons have been afforded an opportunity to participate
in the making of this amendment. No comments were received on the
proposed rule or the FAA's determination of the cost to the public.
After careful review of all available information related to the
subject presented above, the FAA has determined that air safety and the
public interest require the adoption of the rule as proposed except for
minor editorial corrections. The FAA has determined that these minor
corrections will not change the meaning of the AD and will not add any
additional burden upon the public than was already proposed.
The FAA estimates that 160 airplanes in the U.S. registry will be
affected by this AD, that it will take approximately 22 workhours per
airplane to accomplish the required action, and that the average labor
rate is approximately $60 an hour. Parts will be provided by the
manufacturer at no cost to the owners/operators. Based on these
figures, the total cost impact of this AD on U.S. operators is
estimated to be $211,200 or $1,320 per airplane. This figure is based
on the assumption that no owner/operator has accomplished the proposed
inspection and modification and it does not account for repetitive
inspections. The FAA has no way of determining the number of repetitive
inspections an owner/operator may incur.
The compliance time of this AD is presented in calendar time
instead of hours time-in-service (TIS). The FAA has determined that a
calendar time compliance is the most desirable method because the
unsafe condition described by this AD is caused by stress corrosion.
Stress corrosion initiates as a result of airplane operation, but can
continue to develop regardless of whether the airplane is in service or
in storage. Therefore, to ensure that the above-referenced condition is
detected and corrected on all airplanes within a reasonable period of
time without inadvertently grounding any airplanes, a compliance
schedule based upon calendar time instead of hours TIS is required.
The regulations adopted herein will not have substantial direct
effects 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. Therefore, in
accordance with Executive Order 12612, it is determined that this final
rule does not have sufficient federalism implications to warrant the
preparation of a Federalism Assessment.
For the reasons discussed above, I certify that this action (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. A copy of the final evaluation prepared for this
action is contained in the Rules Docket. A copy of it may be obtained
by contacting the Rules Docket at the location provided under the
caption ADDRESSES.
List of Subjects in 14 CFR Part 39
Air transportation, Aircraft, Aviation safety, Incorporation by
reference, Safety.
Adoption of the Amendment
Accordingly, pursuant to the authority delegated to me by the
Administrator, the Federal Aviation Administration amends part 39 of
the Federal Aviation Regulations (14 CFR part 39) as follows:
PART 39--AIRWORTHINESS DIRECTIVES
1. The authority citation for part 39 continues to read as follows:
Authority: 49 USC 106(g), 40101, 40113, 44701.
Sec. 39.13 [Amended]
2. Section 39.13 is amended by adding a new airworthiness directive
(AD) to read as follows:
AD No. 95-24-13 JETSTREAM AIRCRAFT LIMITED: Amendment 39-9443;
Docket No. 95-CE-27-AD.
Applicability: Model HP137 Mk1, Jetstream Series 200, and
Jetstream Models 3101 and 3201 airplanes (all serial numbers),
certificated in any category.
Note 1: This AD applies to each airplane identified in the
preceding applicability provision, regardless of whether it has been
modified, altered, or repaired in the area subject to the
requirements of this AD. For airplanes that have been modified,
altered, or repaired so that the performance of the requirements of
this AD is affected, the owner/operator must request approval for an
alternative method of compliance in accordance with paragraph (c) of
this AD. The request should include an assessment of the effect of
the modification, alteration, or repair on the unsafe condition
addressed by this AD; and, if the unsafe condition has not been
eliminated, the request should include specific proposed actions to
address it. Compliance: Required within the next 6 calendar months
after the effective date of this AD, unless already accomplished.
To prevent damage to the aileron control systems, which, if not
detected and corrected, could cause loss of lateral control and
eventual loss of control of the airplane, accomplish the following:
(a) Inspect the mounting spigots for cracks using both visual
and fluorescent dye penetrant methods in accordance with the
ACCOMPLISHMENT INSTRUCTIONS section of Jetstream Service Bulletin
(SB) 57-JA 921140, which incorporates the following pages and
revision levels:
----------------------------------------------------------------------------------------------------------------
Pages Revision level Date
----------------------------------------------------------------------------------------------------------------
4, 5, 8, 9, 10, 12, 13 and 14........... Original Issue...................... February 24, 1993.
1, 2, 3, 6 7, and 11.................... Revision 1.......................... February 3, 1994.
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(1) Prior to further flight, replace any cracked spigots with
applicable parts specified in the Parts Table in paragraph 5 of the
ACCOMPLISHMENT INSTRUCTIONS section of Jetstream SB 57-JA 921140.
(2) Prior to further flight, replace the securing nut assemblies
and split pins with new special nut assemblies (Part No. SL45022
(Qty. 2)), and new split pins (Part No. SP90-C8 and SP90-C6), in
accordance with the ACCOMPLISHMENT INSTRUCTIONS section of Jetstream
SB 57-JA 921140. This replacement is required regardless of the
results of the inspection required in paragraph (a) of this AD.
(b) Special flight permits may be issued in accordance with
sections 21.197 and 21.199 of the Federal Aviation Regulations (14
CFR 21.197 and 21.199) to operate the airplane to a location where
the requirements of this AD can be accomplished.
(c) An alternative method of compliance or adjustment of the
compliance time that provides an equivalent level of safety may be
approved by the Manager, Brussels Aircraft Certification Office,
FAA, Europe, Africa, and Middle East Office, c/o American Embassy,
B-1000 Brussels, Belgium or the Small Airplane Directorate, Airplane
Certification Service, FAA, 1201 Walnut, suite 900, Kansas City,
Missouri 64105. The request shall be forwarded through an
appropriate
[[Page 66487]]
FAA Maintenance Inspector, who may add comments and then send it to the
Manager, Brussels Aircraft Certification Office.
Note 2: Information concerning the existence of approved
alternative methods of compliance with this AD, if any, may be
obtained from the Brussels Aircraft Certification Office.
(d) The inspections and replacements required by this AD shall
be done in accordance with Jetstream SB 57-JA 921140 Revision 1,
dated February 24, 1993. This incorporation by reference was
approved by the Director of the Federal Register in accordance with
5 U.S.C. 552(a) and 1 CFR part 51. Copies may be obtained from
Jetstream Aircraft Limited, Prestwick International Airport,
Ayrshire, KA9 2RW, Scotland, or Jetstream Aircraft Inc., Librarian,
P.O. Box 16029, Dulles International Airport, Washington, D.C.
20041-6029. Copies may be inspected at the FAA, Central Region,
Office of the Assistant Chief Counsel, Room 1558, 601 E. 12th
Street, Kansas City, Missouri, or at the Office of the Federal
Register, 800 North Capitol Street, NW., 7th Floor, suite 700,
Washington, DC.
(e) This amendment (39-9443) becomes effective on January 17,
1996.
Issued in Kansas City, Missouri, on November 17, 1995.
Michael Gallagher,
Manager, Small Airplane Directorate, Aircraft Certification Service.
[FR Doc. 95-31201 Filed 12-21-95; 8:45 am]
BILLING CODE 4910-13-U
