Airworthiness Directives; Fokker Model F.28 Mark 0100 Series Airplanes

[Federal Register Volume 66, Number 196 (Wednesday, October 10, 2001)]
[Rules and Regulations]
[Pages 51555-51556]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 01-24778]



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Federal Register / Vol. 66, No. 196 / Wednesday, October 10, 2001 / 
Rules and Regulations

[[Page 51555]]



DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. 2001-NM-21-AD; Amendment 39-12453; AD 2001-20-05]
RIN 2120-AA64


Airworthiness Directives; Fokker Model F.28 Mark 0100 Series 
Airplanes

AGENCY: Federal Aviation Administration, DOT.

ACTION: Final rule.

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SUMMARY: This amendment supersedes an existing airworthiness directive 
(AD), applicable to all Fokker Model F.28 Mark 0100 series airplanes, 
that currently requires replacement of the anti-skid control boxes with 
improved units. This amendment requires modification or replacement of 
the anti-skid control boxes with new, improved units, which render the 
skid control boxes even less susceptible to electromagnetic 
interference during power-up and power-down transients. This action is 
prompted by continuing mandatory airworthiness information from a 
foreign airworthiness authority. The actions specified by this AD are 
necessary to prevent electromagnetic interference with the anti-skid 
control system, which could result in reduced brake pressure during 
low-speed taxiing, and consequent reduced controllability and 
performance of the airplane. This action is intended to address the 
identified unsafe condition.

DATES: Effective November 14, 2001.
    The incorporation by reference of certain publications listed in 
the regulations is approved by the Director of the Federal Register as 
of November 14, 2001.

ADDRESSES: The service information referenced in this AD may be 
obtained from Fokker Services B.V., P.O. Box 231, 2150 AE Nieuw-Vennep, 
the Netherlands. 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: Tom Rodriquez, Aerospace Engineer, 
ANM-116, FAA, Transport Directorate, 1601 Lind Avenue, SW., Renton, 
Washington 98055-4056; telephone (425) 227-1137; fax (425) 227-1149.

SUPPLEMENTARY INFORMATION: A proposal to amend part 39 of the Federal 
Aviation Regulations (14 CFR part 39) by superseding AD 2000-21-12, 
amendment 39-11944 (65 FR 63795, October 25, 2000), which is applicable 
to all Fokker Model F.28 Mark 0100 series airplanes, was published in 
the Federal Register on August 3, 2001 (66 FR 40646). The action 
proposed to require modification or replacement of the anti-skid 
control boxes with new, improved units, which render the skid control 
boxes even less susceptible to electromagnetic interference during 
power-up and power-down transients.

Comments

    Interested persons have been afforded an opportunity to participate 
in the making of this amendment. No comments were submitted in response 
to the proposal or the FAA's determination of the cost to the public.

Conclusion

    The FAA has determined that air safety and the public interest 
require the adoption of the rule as proposed.

Cost Impact

    There are approximately 129 Model F.28 Mark 0100 series airplanes 
of U.S. registry that will be affected by this AD.
    The modification of an existing anti-skid control box which is one 
means of compliance with this AD will take approximately 1 work hour 
per airplane to accomplish, at an average labor rate of $60 per work 
hour. Required parts will cost approximately $5,628 per airplane. Based 
on these figures, the cost impact of this action, if accomplished, 
would be $5,688 per airplane.
    In lieu of the modification of the existing anti-skid control box, 
this AD provides for replacement of an existing anti-skid control box 
with a new, improved anti-skid control box. No information is available 
on the cost of such replacement.
    The cost impact figures discussed above are 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 cost impact figures discussed 
in AD rulemaking actions represent only the time necessary to perform 
the specific actions actually required by the AD. These figures 
typically do not include incidental costs, such as the time required to 
gain access and close up, planning time, or time necessitated by other 
administrative actions.

Regulatory Impact

    The regulations adopted herein 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. Therefore, it 
is determined that this final rule does not have federalism 
implications under Executive Order 13132.
    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:

[[Page 51556]]

PART 39--AIRWORTHINESS DIRECTIVES

    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]

    2. Section 39.13 is amended by removing amendment 39-11944 (65 FR 
63795, October 25, 2000), and by adding a new airworthiness directive 
(AD), amendment 39-12453, to read as follows:

2001-20-05  Fokker Services B.V.: Amendment 39-12453. Docket 2001-
NM-21-AD. Supersedes AD 2000-21-12, Amendment 39-11944.

    Applicability: All Model F.28 Mark 0100 series airplanes, 
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)(1) 
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 as indicated, unless accomplished 
previously.
    To prevent electromagnetic interference with the anti-skid 
control system, which could result in reduced brake pressure during 
low-speed taxiing, and consequent reduced controllability and 
performance of the airplane, accomplish the following:

Modification or Replacement

    (a) Within 24 months after the effective date of this AD: 
Accomplish the action specified in either paragraph (a)(1) or (a)(2) 
of this AD.
    (1) Modify any anti-skid control box having part number (P/N) 
6004272-3, -4, -5, or -6, in accordance with Fokker Service Bulletin 
SBF100-32-123, dated November 15, 2000; or
    (2) Replace any anti-skid control box having part number (P/N) 
6004272-3, -4, -5, or -6 with an improved unit having P/N 6004272-7, 
in accordance with Fokker Service Bulletin SBF100-32-123, dated 
November 15, 2000.

    Note 2: Fokker Service Bulletin SBF100-32-123 refers to Aircraft 
Braking Systems Service Bulletin Fo100-32-83, dated October 30, 
2000, as an additional source of service information.

Spares

    (b) As of the effective date of this AD, no person shall install 
on any airplane an anti-skid control box having P/N 6004272-3, -4, -
5, or -6, unless the anti-skid control box has been modified, in 
accordance with Fokker Service Bulletin SBF100-32-123, dated 
November 15, 2000.

Alternative Methods of Compliance

    (c)(1) 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, International Branch, ANM-116, 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, International 
Branch, ANM-116.
    (2) Alternative methods of compliance, approved previously in 
accordance with AD 2000-21-12, amendment 39-11944, are approved as 
alternative methods of compliance with this AD.

    Note 3: Information concerning the existence of approved 
alternative methods of compliance with this AD, if any, may be 
obtained from the International Branch, ANM-116.

Special Flight Permits

    (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.

Incorporation by Reference

    (e) The actions shall be done in accordance with Fokker Service 
Bulletin SBF100-32-123, dated November 15, 2000. 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 Fokker Services B.V., P.O. Box 231, 2150 AE Nieuw-
Vennep, the Netherlands. 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.

    Note 4: The subject of this AD is addressed in Dutch 
airworthiness directive 1999-149, dated November 30, 2000.

Effective Date

    (f) This amendment becomes effective on November 14, 2001.

    Issued in Renton, Washington, on September 26, 2001.
Charles Huber,
Acting Manager, Transport Airplane Directorate, Aircraft Certification 
Service.
[FR Doc. 01-24778 Filed 10-9-01; 8:45 am]
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