[Federal Register Volume 63, Number 47 (Wednesday, March 11, 1998)]
[Rules and Regulations]
[Pages 11819-11820]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 98-6022]



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 Rules and Regulations
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  Federal Register / Vol. 63, No. 47 / Wednesday, March 11, 1998 / 
Rules and Regulations  

[[Page 11819]]


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DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. 97-NM-190-AD; Amendment 39-10379; AD 98-06-01]
RIN 2120-AA64


Airworthiness Directives; Dassault Model Mystere-Falcon 50 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 all Dassault Model Mystere-Falcon 50 series airplanes, 
that requires a one-time inspection of the clearances around the wiring 
harnesses of the right-hand electrical cabinet, and readjustment of the 
clearances, if necessary. This amendment will also require installation 
of protective strips on the wiring harnesses and equipment supports. 
This amendment is prompted by issuance of mandatory continued 
airworthiness information by a foreign civil airworthiness authority. 
The actions specified by this AD are intended to prevent interference 
between the wiring harnesses and adjacent equipment, support brackets, 
and structural elements, which could cause an electrical short circuit 
resulting in fire, and consequent loss of electrical power to essential 
flight systems.

DATES: Effective April 15, 1998.
    The incorporation by reference of certain publications listed in 
the regulations is approved by the Director of the Federal Register as 
of April 15, 1998.

ADDRESSES: The service information referenced in this AD may be 
obtained from Dassault Falcon Jet Corporation, Teterboro Airport, P.O. 
Box 2000, South Hackensack, New Jersey 07606. 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: Norman B. Martenson, Manager, 
International Branch, ANM-116, FAA, Transport Airplane Directorate, 
1601 Lind Avenue, SW., Renton, Washington 98055-4056; telephone (425) 
227-2110; fax (425) 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 all Dassault Model Mystere-Falcon 
50 series airplanes was published in the Federal Register on December 
11, 1997 (62 FR 65230). That action proposed to require a one-time 
inspection of the clearances around the wiring harnesses of the right-
hand electrical cabinet, and readjustment of the clearances, if 
necessary. That action also proposed to require installation of 
protective strips on the wiring harnesses and equipment supports.

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

    The FAA estimates that 155 Dassault Model Mystere-Falcon 50 series 
airplanes of U.S. registry will be affected by this AD, that it will 
take approximately 6 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 $355 per airplane. Based on these 
figures, the cost impact of the AD on U.S. operators is estimated to be 
$110,825, or $715 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.

[[Page 11820]]

Sec. 39.13  [Amended]

    2. Section 39.13 is amended by adding the following new 
airworthiness directive:

98-06-01  DASSAULT AVIATION: Amendment 39-10379. Docket 97-NM-190-
AD.

    Applicability: All Model Mystere-Falcon 50 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 (b) 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 interference between the wiring harnesses and 
adjacent equipment, support brackets, and structural elements, which 
could cause an electrical short circuit resulting in fire, and 
consequent loss of electrical power to essential flight systems; 
accomplish the following:
    (a) Within 6 months or 300 flight hours after the effective date 
of this AD, whichever occurs first, accomplish the requirements of 
paragraphs (a)(1), (a)(2), and (a)(3) of this AD in accordance with 
Dassault Service Bulletin F50-256 (F50-20-5), Revision 1, dated 
December 22, 1996.
    (1) Perform a one-time inspection of the clearances between the 
wiring harnesses and the adjacent equipment, support brackets, and 
structural elements. If any clearance is outside the limits 
specified in the service bulletin, prior to further flight, readjust 
the clearances in accordance with the service bulletin.
    (2) Install Teflon protective strips on the wiring harnesses in 
the vicinity of the equipment supports.
    (3) Install rubber protective strips to the rear edges of the 
equipment supports.
    (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, 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.

    Note 2: Information concerning the existence of approved 
alternative methods of compliance with this AD, if any, may be 
obtained from the International Branch, ANM-116.

    (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 actions shall be done in accordance with Dassault 
Service Bulletin F50-256 (F50-20-5), Revision 1, dated December 22, 
1996. 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 Dassault Falcon Jet 
Corporation, Teterboro Airport, P.O. Box 2000, South Hackensack, New 
Jersey 07606. 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 3: The subject of this AD is addressed in French 
airworthiness directive 96-094-017(B)R1, dated December 18, 1996.

    (e) This amendment becomes effective on April 15, 1998.

    Issued in Renton, Washington, on March 3, 1998.
Darrell M. Pederson,
Acting Manager, Transport Airplane Directorate, Aircraft Certification 
Service.
[FR Doc. 98-6022 Filed 3-10-98; 8:45 am]
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