Airworthiness Directives; Fokker Model F.28 Mark 0070 and 0100 Airplanes

[Federal Register Volume 70, Number 127 (Tuesday, July 5, 2005)]
[Rules and Regulations]
[Pages 38573-38575]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 05-12836]


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DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2005-20870; Directorate Identifier 2004-NM-180-AD; 
Amendment 39-14174; AD 2005-13-37]
RIN 2120-AA64


Airworthiness Directives; Fokker Model F.28 Mark 0070 and 0100 
Airplanes

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

ACTION: Final rule.

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SUMMARY: The FAA is adopting a new airworthiness directive (AD) for all 
Fokker Model F.28 Mark 0070 and 0100 airplanes. This AD requires 
repetitive inspections for damage of the drive rod assembly of the 
aileron tab on each aileron actuator; repetitive measurements of the 
clearance between the aileron hydraulic lines and the drive rod; and 
related investigative and corrective actions if necessary. This AD is 
prompted by a report of an aileron 2 fault caused by severe wear of the 
polyamide washer that is part of an anti-rotation bush assembly in the 
aileron attachment lug. We are issuing this AD to prevent excessive 
wear of the polyamide washer of the aileron actuator bush assembly, 
which could result in aileron flutter and loss of control of the 
airplane.

DATES: This AD becomes effective August 9, 2005.
    The incorporation by reference of a certain publication listed in 
the AD is approved by the Director of the Federal Register as of August 
9, 2005.

ADDRESSES: For service information identified in this AD, contact 
Fokker Services B.V., P.O. Box 231, 2150 AE Nieuw-Vennep, the 
Netherlands.
    Docket: The AD docket contains the proposed AD, comments, and any 
final disposition. You can examine the 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 U.S. 
Department of Transportation, 400 Seventh Street SW., room PL-401, 
Washington, DC. This docket number is FAA-2005-20870; the directorate 
identifier for this docket is 2004-NM-180-AD.

[[Page 38574]]


FOR FURTHER INFORMATION CONTACT: Tom Rodriguez, Aerospace Engineer, 
International Branch, ANM-116, FAA, Transport Airplane Directorate, 
1601 Lind Avenue, SW., Renton, Washington 98055-4056; telephone (425) 
227-1137; fax (425) 227-1149.

SUPPLEMENTARY INFORMATION: The FAA proposed to amend 14 CFR part 39 
with an AD for all Fokker Model F.28 Mark 0070 and 0100 airplanes. That 
action, published in the Federal Register on April 6, 2005 (70 FR 
17342), proposed to require repetitive inspections for damage of the 
drive rod assembly of the aileron tab on each aileron actuator; 
repetitive measurements of the clearance between the aileron hydraulic 
lines and the drive rod; and related investigative and corrective 
actions if necessary.

Comments

    We provided the public the opportunity to participate in the 
development of this AD. No comments have been submitted on the proposed 
AD or on the determination of the cost to the public.

Explanation of Change to Applicability

    We have revised the applicability of the proposed AD to identify 
model designations as published in the most recent type certificate 
data sheet for the affected models.

Conclusion

    We have carefully reviewed the available data and determined that 
air safety and the public interest require adopting the AD with the 
change described previously. We have determined that this change 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.

                                                                     Estimated Costs
--------------------------------------------------------------------------------------------------------------------------------------------------------
                                                                                                  Number of
                                                    Average                           Cost per      U.S.-
               Action                 Work hours   labor rate         Parts           airplane    registered                  Fleet cost
                                                    per hour                                      airplanes
--------------------------------------------------------------------------------------------------------------------------------------------------------
Inspection.........................            1          $65  None...............          $65            2  $130, per inspection cycle.
--------------------------------------------------------------------------------------------------------------------------------------------------------

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. 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 FAA amends Sec.  39.13 by adding the following new airworthiness 
directive (AD):

2005-13-37 Fokker Services B.V.: Amendment 39-14174. Docket No. FAA-
2005-20870; Directorate Identifier 2004-NM-180-AD.

Effective Date

    (a) This AD becomes effective August 9, 2005.

Affected ADs

    (b) None.
    Applicability: (c) This AD applies to all Fokker Model F.28 Mark 
0070 and 0100 airplanes, certificated in any category.

Unsafe Condition

    (d) This AD was prompted by a report of an aileron 2 fault 
caused by severe wear of the polyamide washer that is part of an 
anti-rotation bush assembly in the aileron attachment lug. We are 
issuing this AD to prevent excessive wear of the polyamide washer of 
the aileron actuator bush assembly, which could result in aileron 
flutter and loss of control of the airplane.
    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.

Service Bulletin Reference

    (f) The term ``service bulletin,'' as used in this AD, means the 
Accomplishment Instructions of Fokker Service Bulletin SBF100-27-
083, dated October 20, 2003.

Repetitive Inspections and Measurements

    (g) Within 24 months or 4,000 flight hours after the effective 
date of this AD, whichever occurs earlier: Do the actions in 
paragraphs (g)(1) and (g)(2) of this AD in accordance with the 
service bulletin. Repeat the actions thereafter at intervals not to 
exceed 4,000 flight hours.
    (1) Do a detailed inspection for chafing damage of the aileron 
tab drive rod assembly on each aileron actuator.
    (2) Measure the clearance between the hydraulic line and the 
aileron tab drive rod.


[[Page 38575]]


    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.''

Corrective Action for Chafing Damage

    (h) If any chafing damage that is greater than 0.2 mm is found 
during any inspection required by paragraph (g)(1) of this AD, 
replace the drive rod in accordance with the service bulletin, at 
the applicable threshold limits defined in the service bulletin.

Corrective Action for Discrepant Clearance Measurements

    (i) If any clearance measurement that is outside the limits 
defined in the service bulletin is found during the action required 
by paragraph (g)(2) of this AD, do the actions in paragraphs (i)(1) 
and (i)(2) of this AD. Do all actions in accordance with the service 
bulletin at the applicable threshold limits defined in the service 
bulletin.
    (1) Replace the polyamide washer or replace the bush assembly.
    (2) Do all applicable related investigative and corrective 
actions after the replacement in paragraph (i)(1) of this AD, 
including replacing the aileron actuator with a serviceable aileron 
actuator as applicable.

Alternative Methods of Compliance (AMOCs)

    (j) The Manager, International Branch, ANM-116, FAA, Transport 
Airplane Directorate, has the authority to approve AMOCs for this 
AD, if requested in accordance with the procedures found in 14 CFR 
39.19.

Related Information

    (k) Dutch airworthiness directive 2003-141, dated November 28, 
2003, also addresses the subject of this AD.

Material Incorporated by Reference

    (l) You must use Fokker Service Bulletin SBF100-27-083, dated 
October 20, 2003, to perform the actions that are required by this 
AD, unless the AD specifies otherwise. The Director of the Federal 
Register approves the incorporation by reference of this document in 
accordance with 5 U.S.C. 552(a) and 1 CFR part 51. To get copies of 
the service information, contact Fokker Services B.V., P.O. Box 231, 
2150 AE Nieuw-Vennep, the Netherlands. To view the AD docket, go to 
the Docket Management Facility, U.S. Department of Transportation, 
400 Seventh Street SW., room PL-401, Nassif Building, Washington, 
DC. To review copies of the service information, go to 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 June 21, 2005.
Ali Bahrami,
Manager, Transport Airplane Directorate, Aircraft Certification 
Service.
[FR Doc. 05-12836 Filed 7-1-05; 8:45 am]
BILLING CODE 4910-13-P

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