[Federal Register Volume 60, Number 116 (Friday, June 16, 1995)]
[Rules and Regulations]
[Pages 31626-31628]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 95-14166]
-----------------------------------------------------------------------
DEPARTMENT OF TRANSPORTATION
14 CFR Part 39
[Docket No. 94-NM-250-AD; Amendment 39-9269; AD 95-12-18]
Airworthiness Directives; Fokker Model F28 Mark 0100 Series
Airplanes
AGENCY: Federal Aviation Administration, DOT.
ACTION: Final rule.
-----------------------------------------------------------------------
SUMMARY: This amendment adopts a new airworthiness directive (AD),
applicable to certain Fokker Model F28 Mark 0100 series airplanes, that
requires a visual inspection to verify proper clearance between the
engine fuel supply-line and the hydraulic line in certain areas, and
replacement of damaged fuel lines. This amendment would also require
installation of additional clamps on the out line of the lift-dumper in
certain cases. This amendment is prompted by a report indicating that
fuel was found leaking from the right-hand wheel bay on one airplane
due to chafing of the fuel supply line. The actions specified by this
AD are intended to prevent such chafing, which could result in fuel
leakage, and, subsequently, lead to a possible fire hazard and engine
fuel depravation.
DATES: Effective July 17, 1995.
The incorporation by reference of certain publications listed in
the regulations is approved by the Director of the Federal Register as
of July 17, 1995.
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) 227-1320.
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 January 17,
1995 (60 FR 3358). That action proposed to require a one-time visual
inspection to verify proper
[[Page 31627]]
clearance between the engine fuel supply-line and the hydraulic line in
zones 631 and 531. It also proposed to require an inspection to detect
damage of fuel lines, and replacement of damaged fuel lines. That
action also proposed to require installation of two additional clamps
on the out line of the lift-dumper in cases where clearance is less
than 3mm (0.118 inch) and no damage is detected on the fuel lines.
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.
One commenter requests that the FAA revise paragraphs (a)(3) and
(a)(4) of the proposed rule to remove the phrase ``in accordance with
the service bulletin.'' The commenter recommends describing the
clamping procedures in general terms, such as ``addition of clamps as
required to provide the prerequisite clearance,'' instead of mandating
that these procedures be accomplished in accordance with a specific
service document. The FAA does not concur. The FAA has determined that
the commenter's request to require ``addition of clamps * * *'' is too
vague to provide adequate guidance as to what is required of operators,
and for the FAA to perform proper surveillance of these operators to
ensure that the objectives of the AD are being fulfilled. Under
provisions of paragraph (b) of the final rule, however, operators may
apply for approval of an alternative method of compliance, such as
different clamping procedures.
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 83 airplanes of U.S. registry will be
affected by this AD, that it will take approximately 1 work hour per
airplane to accomplish the required actions, and that the average labor
rate is $60 per work hour. Based on these figures, the total cost
impact of the AD on U.S. operators is estimated to be $4,980, or $60
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:
95-12-18 Fokker: Amendment 39-9269. Docket 94-NM-250-AD.
Applicability: Model F28 Mark 0100 series airplanes, serial
numbers 11244 through 11438 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 (b) to 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 chafing of the fuel supply line, which could result
in fuel leakage, and, subsequently, lead to a possible fire hazard
and engine fuel depravation, accomplish the following:
(a) Within 30 days after the effective date of this AD, perform
a visual inspection to verify proper clearance between the engine
fuel supply-line and the hydraulic line in zones 631 and 531 and to
detect damage of the fuel supply-line, in accordance with Fokker
Service Bulletin SBF100-28-026, dated March 12, 1993.
(1) If the clearance is found to be 3mm (0.118 inch) or more and
no damage is found, no further action is required by this AD.
(2) If the clearance is found to be 3mm or more and damage is
found, prior to further flight, replace the damaged fuel line in
accordance with the service bulletin.
(3) If the clearance is found to be less than 3mm and no damage
is found, within 6 months after the effective date of this AD,
install 2 additional clamps on the out line of the lift-dumper, in
accordance with the service bulletin.
(4) If the clearance is found to be less than 3mm and damage is
found, prior to further flight, replace the damaged fuel line, and
install 2 additional clamps on the out line of the lift-dumper, in
accordance with the service bulletin.
(b) 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.
(c) 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.
(d) The inspection, replacement, and installation shall be done
in accordance with Fokker Service Bulletin SBF100-28-026, dated
March 12, 1993. 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
[[Page 31628]]
Register, 800 North Capitol Street, NW., suite 700, Washington, DC.
(e) This amendment becomes effective on July 17, 1995.
Issued in Renton, Washington, on June 5, 1995.
Darrell M. Pederson,
Acting Manager, Transport Airplane Directorate, Aircraft Certification
Service.
[FR Doc. 95-14166 Filed 6-15-95; 8:45 am]
BILLING CODE 4910-13-U
