[Federal Register Volume 61, Number 62 (Friday, March 29, 1996)]
[Rules and Regulations]
[Pages 14014-14016]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 96-7399]



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DEPARTMENT OF TRANSPORTATION
14 CFR Part 39

[Docket No. 95-NM-86-AD; Amendment 39-9555; AD 96-07-06]


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

[[Page 14015]]
inspection(s) to verify that the position indicator of the fuel balance 
transfer valve (FBTV) is in the closed position, and closing the FBTV, 
if necessary; and deactivation of the fuel balance transfer system 
(FBTS). This amendment is prompted by a report that, under certain 
failure conditions, the actuator of the FBTV could remain in the open 
position without a flight deck indication. The actions specified by 
this AD are intended to ensure that the FBTV is not in the open 
position during flight, which could lead to the reduction of fuel 
supply to the engines during cross-feed operation and consequent engine 
fuel starvation.

DATES: Effective April 29, 1996.
    The incorporation by reference of certain publications listed in 
the regulations is approved by the Director of the Federal Register as 
of April 29, 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 December 11, 
1995 (60 FR 63470). That action proposed to require inspection(s) to 
verify that the position indicator of the fuel balance transfer valve 
(FBTV) is in the closed position, and closing the FBTV, if necessary; 
and deactivation of the fuel balance transfer system (FBTS).
    Interested persons have been afforded an opportunity to participate 
in the making of this amendment. Due consideration has been given to 
the single comment received.
    The commenter supports the proposed rule.
    After careful review of the available data, including the comment 
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 4 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 $250 
per airplane. Based on these figures, the cost impact of the AD on U.S. 
operators is estimated to be $1,960, or $490 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.
    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:

96-07-06  Fokker: Amendment 39-9555. Docket 95-NM-86-AD.

    Applicability: Model F28 Mark 0100 series airplanes, as listed 
in Fokker Service Bulletin SBF100-28-030, Revision 1, dated December 
5, 1994; 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) 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 the reduction of fuel supply to the engines during 
cross-feed operation, which could lead to engine fuel starvation, 
accomplish the following:
    (a) After the effective date of this AD, whenever the fuel 
balance transfer system (FBTS) is used during maintenance, prior to 
further flight, perform an inspection to verify that the position 
indicator of the fuel balance transfer valve (FBTV) is in the closed 
position, in accordance with Fokker Service Bulletin SBF100-28-030, 
Revision 1, dated December 5, 1994. The inspection requirements of 
this paragraph must be accomplished until the deactivation required 
by paragraph (b) of this AD is accomplished.
    (1) If the position indicator is in the closed position, no 
further action is required by this paragraph.
    (2) If the position indicator is in the open position, close the 
FBTV in accordance with the service bulletin.
    (b) Within 90 days after the effective date of this AD, 
deactivate the FBTS in accordance with either Part 2 or Part 3 of 
the Accomplishment Instructions of Fokker Service Bulletin SBF100-
28-030, Revision 1, dated December 5, 1994, as applicable. 
Accomplishment of the deactivation constitutes terminating action 
for the repetitive inspection requirements of paragraph (a) of this 
AD.
    (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

[[Page 14016]]
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 actions shall be done in accordance with Fokker Service 
Bulletin SBF100-28-030, Revision 1, dated December 5, 1994, which 
contains the following list of effective pages:

------------------------------------------------------------------------
                                    Revision level                      
            Page No.                 shown on page    Date shown on page
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1-3, 5, 8, 10...................  1.................  December 5, 1994. 
4, 6, 7, 9......................  Original..........  August 28, 1994.  
------------------------------------------------------------------------

    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 April 29, 1996.

    Issued in Renton, Washington, on March 21, 1996.
Darrell M. Pederson,
Acting Manager, Transport Airplane Directorate, Aircraft Certification 
Service.
[FR Doc. 96-7399 Filed 3-28-96; 8:45 am]
BILLING CODE 4910-13-P