[Federal Register Volume 59, Number 33 (Thursday, February 17, 1994)]
[Unknown Section]
[Page 0]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 94-3236]
[[Page Unknown]]
[Federal Register: February 17, 1994]
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DEPARTMENT OF TRANSPORTATION
14 CFR Part 39
[Docket No. 93-NM-107-AD; Amendment 39-8824; AD 94-04-06]
Airworthiness Directives; Fokker Model F28 Mark 0100 Series
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 Fokker Model F28 Mark 0100 series airplanes, that
requires replacement of the existing ground/flight microswitches
located in the main landing gear with improved microswitches, and
installation of an anti-skid system ON/OFF switch in the flight
compartment. This amendment is prompted by an incident involving loss
of braking, which was caused by mechanical ground/flight microswitches
that froze while in the flight position. The actions specified by this
AD are intended to prevent loss of braking below 40 miles per hour,
when the anti-skid system is activated.
DATES: Effective March 21, 1994.
The incorporation by reference of certain publications listed in
the regulations is approved by the Director of the Federal Register as
of March 21, 1994.
ADDRESSES: The service information referenced in this AD may be
obtained from Fokker Aircraft USA, Inc., 1199 North Fairfax Street,
Alexandria, Virginia 22314. 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: Timothy Dulin, Aerospace Engineer,
Standardization Branch, ANM-113, FAA, Transport Airplane Directorate,
1601 Lind Avenue, SW., Renton, Washington 98055-4056; telephone (206)
227-2141; fax (206) 227-1320.
SUPPLEMENTARY INFORMATION: A proposal to amend part 39 of the Federal
Aviation Regulations to include an airworthiness directive (AD) that is
applicable to certain Fokker Model F28 Mark 0100 series airplanes was
published in the Federal Register on September 1, 1993 (58 FR 46139).
That action proposed to require replacement of the existing left- and
right-hand ground/flight microswitches with new, improved microswitches
at the MLG downlock, temperature sensor, and anti-skid harness
positions. The proposed rule would also require installation of an
anti-skid system ON/OFF switch in the flight compartment, for certain
airplanes.
Interested persons have been afforded an opportunity to participate
in the making of this amendment. Due consideration has been given to
the comments received.
One commenter supports the proposed rule.
The Air Transport Association (ATA) of America, on behalf of one of
its members, requests withdrawal of the proposal. The commenter notes
that the proposed replacement and installation has already been
accomplished on all 14 airplanes affected by this proposal in the U.S.-
registered fleet. Therefore, the commenter does not believe that an AD
is necessary. The commenter also asserts that issuance of the proposal
would only add to an administrative paperwork burden. The FAA does not
agree. Issuance of this AD is necessary to ensure accomplishment of the
requirements on any affected airplane currently of foreign registry
that is purchased by a U.S. operator and placed on the U.S. register in
the future. The FAA has determined that issuance of this AD should only
result in a minor administrative burden, since the required actions
have already been accomplished.
After careful review of the available data, including the comments
noted above, the FAA has determined that air safety and the public
interest require the adoption of the rule as proposed.
The FAA estimates that 14 airplanes of U.S. registry will be
affected by this AD. The FAA has been advised that all 14 affected
airplanes have been modified in accordance with the requirements of
this AD. Therefore, currently, this AD action imposes no additional
economic burden on any U.S. operator.
However, should an unmodified airplane be imported and placed on
the U.S. Register in the future, it will take approximately 113 work
hours per airplane to accomplish the proposed actions, at an average
labor rate of $55 per work hour. Required parts would cost
approximately $1,800 per airplane. Based on these figures, the total
cost impact of the AD is estimated to be $8,015 per airplane.
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 14 CFR part
39 of the Federal Aviation Regulations 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:
94-04-06 Fokker: Amendment 39-8824. Docket 93-NM-107-AD.
Applicability: Model F28 Mark 0100 series airplanes; serial
numbers 11244 through 11265 inclusive, 11268 through 11283
inclusive, 11286, 11289, 11291, 11293, 11295, 11297, 11300, and
11303; certificated in any category.
Compliance: Required as indicated, unless accomplished
previously.
To prevent loss of braking below 40 miles per hour, when the
anti-skid system is activated, accomplish the following:
(a) For all airplanes: Within 3 months after the effective date
of this AD, replace the existing Dowty Electronics left- and right-
hand ground/flight microswitches, part number 620602801, issue 1,
with new, improved microswitches, part number 620602801, issue 2, at
the main landing gear (MLG) downlock, temperature sensor, and anti-
skid harness positions, in accordance with Fokker Service Bulletin
SBF100-32-060, dated October 20, 1992.
(b) For airplanes having serial numbers 11244 through 11265
inclusive, 11268 through 11275 inclusive, 11277, and 11279: Within
12 months after the effective date of this AD, install an anti-skid
system ON/OFF switch in the flight compartment in accordance with
Fokker Service Bulletin SBF100-32-060, dated October 20, 1992.
(c) As of the effective date of this AD, no person shall install
a Dowty Electronics left- and/or right-hand ground/flight
microswitch, part number 620602801, issue 1, on any airplane.
(d) 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: Information concerning the existence of approved
alternative methods of compliance with this AD, if any, may be
obtained from the Standardization Branch, ANM-113.
(e) Special flight permits may be issued in accordance with
Federal Aviation Regulations (FAR) 21.197 and 21.199 to operate the
airplane to a location where the requirements of this AD can be
accomplished.
(f) The replacement and installation shall be done in accordance
with Fokker Service Bulletin SBF100-32-060, dated October 20, 1992.
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 Aircraft USA, Inc., 1199
North Fairfax Street, Alexandria, Virginia 22314. 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.
(g) This amendment becomes effective on March 21, 1994.
Issued in Renton, Washington, on February 7, 1994.
Darrell M. Pederson,
Acting Manager, Transport Airplane Directorate, Aircraft Certification
Service.
[FR Doc. 94-3236 Filed 2-16-94; 8:45 am]
BILLING CODE 4910-13-U