[Federal Register Volume 60, Number 141 (Monday, July 24, 1995)]
[Rules and Regulations]
[Pages 37820-37821]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 95-17708]
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DEPARTMENT OF TRANSPORTATION
14 CFR Part 39
[Docket No. 94-NM-189-AD; Amendment 39-9313; AD 95-15-10]
Airworthiness Directives; Jetstream Model 4101 Airplanes
AGENCY: Federal Aviation Administration, DOT.
ACTION: Final rule.
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SUMMARY: This amendment adopts a new airworthiness directive (AD),
applicable to certain Jetstream Model 4101 airplanes, that requires an
inspection to determine if a travel stop (screw) is installed at the
flight control assembly, and various follow-on actions. This amendment
is prompted by a report of failure of the travel stop, which allowed
the elevator and aileron disconnect handles to rotate within the
housing due to migration of the travel stop from its position. The
actions specified by this AD are intended to prevent such migration,
which could result in the elevator and aileron disconnect system
resetting without the use of the reset button; this condition could
lead to jamming of the disconnect handles.
DATES: Effective August 23, 1995.
The incorporation by reference of certain publications listed in
the regulations is approved by the Director of the Federal Register as
of August 23, 1995.
ADDRESSES: The service information referenced in this AD may be
obtained from Jetstream Aircraft, Inc., P.O. Box 16029, Dulles
International Airport, Washington, DC 20041-6029. This information may
be examined at the Federal Aviation Administration (FAA), Transport
Airplane Directorate, Rules Docket, 1601 Lind Avenue, SW., Renton,
Washington; or at the Office of the Federal Register, 800 North Capitol
Street, NW., suite 700, Washington, DC.
FOR FURTHER INFORMATION CONTACT: William Schroeder, Aerospace Engineer,
Standardization Branch, ANM-113, FAA, Transport Airplane Directorate,
1601 Lind Avenue, SW., Renton, Washington 98055-4056; telephone (206)
227-2148; fax (206) 227-1149.
SUPPLEMENTARY INFORMATION: A proposal to amend part 39 of the Federal
Aviation Regulations (14 CFR part 39) to include an airworthiness
directive (AD) that is applicable to certain Jetstream Model 4101
airplanes was published in the Federal Register on February 17, 1995
(60 FR 9304). That action proposed to require an inspection to
determine if a travel stop (screw) is installed at the flight control
assembly, and various follow-on actions.
Interested persons have been afforded an opportunity to participate
in the making of this amendment. Due consideration has been given to
the single comment received.
The commenter supports the proposed rule, but requests that the FAA
consider the final rule to be interim action. This commenter states
that the FAA should continue to investigate and determine the cause of
the migration of the screw. The FAA concurs. The FAA inadvertently
omitted indication that this rule is considered to be interim action
until final action is identified, at which time the FAA may consider
further rulemaking.
After careful review of the available data, including the comment
noted above, the FAA has determined that air safety and the public
interest require the adoption of the rule with the change previously
described. The FAA has determined that this change will neither
increase the economic burden on any operator nor increase the scope of
the AD.
The FAA estimates that 14 airplanes of U.S. registry will be
affected by this AD, that it will take approximately 4 work hours per
airplane to accomplish the required actions, and that the average labor
rate is $60 per work hour. Required parts will be supplied by the
manufacturer at no cost to the operators. Based on these figures, the
total cost impact of the AD on U.S. operators is estimated to be
$3,360, or $240 per airplane.
The total cost impact figure discussed above is based on
assumptions that no operator has yet accomplished any of the
requirements of this AD action, and that no operator would accomplish
those actions in the future if this AD were not adopted.
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 final evaluation has been prepared for this action
and it is contained in the Rules Docket. A copy of it may be obtained
from 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 U.S.C. App. 1354(a), 1421 and 1423; 49 U.S.C.
106(g); and 14 CFR 11.89.
Sec. 39.13 [Amended]
2. Section 39.13 is amended by adding the following new
airworthiness directive:
95-15-10 Jetstream Aircraft Limited: Amendment 39-9313. Docket 94-
NM-189-AD.
Applicability: Model 4101 airplanes, constructors numbers 41004
through 41039 inclusive, 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 use the authority
provided in paragraph (c) of this AD to
[[Page 37821]]
request approval from the FAA. This approval may address either no
action, if the current configuration eliminates the unsafe
condition; or different actions necessary to address the unsafe
condition described in this AD. Such a request should include an
assessment of the effect of the changed configuration on the unsafe
condition addressed by this AD. In no case does the presence of any
modification, alteration, or repair remove any airplane from the
applicability of this AD.
Compliance: Required as indicated, unless accomplished
previously.
To prevent jamming of the elevator and aileron disconnect
handles, accomplish the following:
(a) Within 600 flight hours after the effective date of this AD,
or within 6 months after the effective date of this AD, whichever
occurs first, perform an inspection to determine if a travel stop
(screw) is installed at the flight control assembly, in accordance
with Jetstream Service Bulletin J41-27-036, dated September 2, 1994.
(1) If no travel stop is found to be installed, prior to further
flight, install a new travel stop in accordance with the service
bulletin. After installation, accomplish paragraph (a)(2) of this
AD.
(2) If such a travel stop is installed, prior to further flight,
perform a rotation to determine the security of the travel stop, in
accordance with the service bulletin.
(i) If the travel stop is found to be properly secured, no
further action is required by paragraph (a) of this AD.
(ii) If the travel stop is found to be loose, prior to further
flight, remove it and perform an inspection to detect damage in
accordance with the service bulletin. If any damage is found,
replace the travel stop with a new travel stop, in accordance with
the service bulletin. After replacement, repeat the requirements of
paragraph (a)(2) of this AD.
(b) After accomplishment of paragraph (a) of this AD, prior to
further flight, accomplish paragraphs (b)(1), (b)(2), and (b)(3) of
this AD, in accordance with Jetstream Service Bulletin J41-27-036,
dated September 2, 1994.
(1) Apply Loctite Superfast 290 to the travel stop;
(2) Permanently mark the flight control assembly; and
(3) Perform a functional test of the aileron and elevator
disconnect systems and set them to the locked position.
Note 2: Procedures for installing a protective spiral wrap cover
are contained in Jetstream Service Bulletin J41-27-036, dated
September 2, 1994. This installation is recommended, but is not
required by this AD.
(c) An alternative method of compliance or adjustment of the
compliance time that provides an acceptable level of safety may be
used if approved by the Manager, Standardization Branch, ANM-113,
FAA, Transport Airplane Directorate. Operators shall submit their
requests through an appropriate FAA Principal Maintenance Inspector,
who may add comments and then send it to the Manager,
Standardization Branch, ANM-113.
Note 3: Information concerning the existence of approved
alternative methods of compliance with this AD, if any, may be
obtained from the Standardization Branch, ANM-113.
(d) 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.
(e) The actions shall be done in accordance with Jetstream
Service Bulletin J41-27-036, dated September 2, 1994. 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, Inc., P.O. Box
16029, Dulles International Airport, Washington, DC 20041-6029.
Copies may be inspected at the FAA, Transport Airplane Directorate,
1601 Lind Avenue, SW., Renton, Washington; or at the Office of the
Federal Register, 800 North Capitol Street, NW., suite 700,
Washington, DC.
(f) This amendment becomes effective on August 23, 1995.
Issued in Renton, Washington, on July 13, 1995.
James V. Devany,
Acting Manager, Transport Airplane Directorate, Aircraft Certification
Service.
[FR Doc. 95-17708 Filed 7-21-95; 8:45 am]
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