[Federal Register Volume 61, Number 182 (Wednesday, September 18, 1996)]
[Rules and Regulations]
[Pages 49051-49053]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 96-23711]
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DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. 95-NM-252-AD; Amendment 39-9760; AD 96-19-14]
RIN 2120-AA64
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 certain flexible oxygen hoses, located in the
flight compartment gangway and in the consoles, with insulated hose
assemblies. This amendment is prompted by reports of either
insufficient or no clearance between these hoses and adjacent structure
or electrical wiring. The actions specified by this AD are intended to
prevent chafing of the
[[Page 49052]]
flexible oxygen hoses, which could result in an uncontrollable loss of
oxygen from the flightcrew oxygen system, and could allow the presence
of oxygen in areas where ignition is possible.
DATES: Effective October 23, 1996.
The incorporation by reference of certain publications listed in
the regulations is approved by the Director of the Federal Register as
of October 23, 1996.
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: Tim 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) 227-1149.
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 Fokker Model F28 Mark 0100
series airplanes was published in the Federal Register on March 28,
1996 (61 FR 13791). That action proposed to require replacement of
flexible oxygen hoses with insulated hose assemblies.
Interested persons have been afforded an opportunity to participate
in the making of this amendment. Due consideration has been given to
the comments received.
Support for the Proposal
One commenter supports the proposed rule.
Request To Clarify Installation Requirement
One commenter requests that paragraph (b) of the proposed rule,
which prohibits installation of a hose assembly with part number (P/N)
A66152-417 or A66152-407 on the airplane, be revised to clarify that
these flexible hoses may be installed at other locations on the
airplane.
The FAA concurs. The intent of the AD was to prohibit the
installation of the flexible hoses only in those locations specified in
paragraph (a) of the AD, i.e., the flight compartment gangway and the
left-hand and right-hand side consoles. Paragraph (b) of the AD has
been revised to clarify this intent.
Conclusion
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 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.
Cost Impact
The FAA estimates that 21 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 cost approximately
$1,376 per airplane. Based on these figures, the cost impact of the AD
on U.S. operators is estimated to be $33,936, or $1,616 per airplane.
The 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.
Regulatory Impact
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. 106(g), 40113, 44701.
Sec. 39.13 [Amended]
2. Section 39.13 is amended by adding the following new
airworthiness directive:
96-19-14 Fokker: Amendment 39-9760. Docket 95-NM-252-AD.
Applicability: Model F28 Mark 0100 series airplanes, having
serial numbers 11244 through 11321 inclusive, and 11323 through
11332 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
otherwise 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 as indicated, unless accomplished
previously.
To prevent an uncontrollable loss of oxygen from the flightcrew
oxygen system due to chafing of the flexible oxygen hoses, which
could result in the presence of oxygen in areas where ignition is
possible; accomplish the following:
(a) Within 12 months or 3,000 flight cycles after the effective
date of this AD, whichever occurs first, replace the flexible oxygen
hoses having part number (P/N) A66152-407, located in the left-hand
(LH) and right-hand (RH) side consoles with insulated tube
assemblies having P/N D66127-401; and replace the flexible oxygen
assemblies having P/N A66152-417, located in the flight compartment
gangway with insulated tube assemblies having P/N D66127-403; in
accordance with Fokker Service Bulletin SBF100-35-004, dated May 17,
1995.
(b) As of the effective date of this AD, no person shall install
a hose assembly with P/N A66152-417 or A66152-407, in the flight
compartment gangway or in the LH or RH side consoles of any
airplane.
[[Page 49053]]
(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 2: 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 replacements shall be done in accordance with Fokker
Service Bulletin SBF100-35-004, dated May 17, 1995. 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.
(f) This amendment becomes effective on October 23, 1996.
Issued in Renton, Washington, on September 10, 1996.
James V. Devany,
Acting Manager, Transport Airplane Directorate, Aircraft Certification
Service.
[FR Doc. 96-23711 Filed 9-17-96; 8:45 am]
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