AD Amdt-39-10541

[Federal Register Volume 63, Number 102 (Thursday, May 28, 1998)]
[Rules and Regulations]
[Pages 29098-29099]
From the Federal Register Online via the Government Publishing Office [<a href="http://www.gpo.gov">www.gpo.gov</a>]
[FR Doc No: 98-13820]


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DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. 97-CE-121-AD; Amendment 39-10541; AD 98-11-16]
RIN 2120-AA64


Airworthiness Directives; Dornier Luftfahrt GmbH Models 228-100, 
228-101, 228-200, 228-201, 228-202, and 228-212 Airplanes

AGENCY: Federal Aviation Administration, DOT.

ACTION: Final rule.

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SUMMARY: This amendment adopts a new airworthiness directive (AD) that 
applies to certain Dornier Luftfahrt GmbH (Dornier) Models 228-100, 
228-101, 228-200, 228-201, 228-202, and 228-212 airplanes. This AD 
requires modifying the logic in the failure detection circuits of the 
landing gear uplock switches. This AD is the result of mandatory 
continuing airworthiness information (MCAI) issued by the airworthiness 
authority for Germany. The actions specified by this AD are intended to 
prevent a false warning indication of landing gear failure because of 
the design of the landing gear warning system, which could result in 
incorrect actions from the pilot based on the warning indications.

DATES: Effective July 11, 1998.
    The incorporation by reference of certain publications listed in 
the regulations is approved by the Director of the Federal Register as 
of July 11, 1998.

ADDRESSES: Service information that applies to this AD may be obtained 
from Daimler-Benz Aerospace, Dornier, Product Support, P.O. Box 1103, 
D-82230 Wessling, Federal Republic of Germany; telephone: (08153) 300; 
facsimile: (08153) 302985. This information may also be examined at the 
Federal Aviation Administration (FAA), Central Region, Office of the 
Regional Counsel, Attention: Rules Docket No. 97-CE-121-AD, Room 1558, 
601 E. 12th Street, Kansas City, Missouri 64106; or at the Office of 
the Federal Register, 800 North Capitol Street, NW, suite 700, 
Washington, DC.

FOR FURTHER INFORMATION CONTACT: Mr. Karl Schletzbaum, Aerospace 
Engineer, FAA, Small Airplane Directorate, 1201 Walnut, suite 900, 
Kansas City, Missouri 64106; telephone: (816) 426-6934; facsimile: 
(816) 426-2169.

SUPPLEMENTARY INFORMATION:

Events Leading to the Issuance of This AD

    A proposal to amend part 39 of the Federal Aviation Regulations (14 
CFR part 39) to include an AD that would apply to certain Dornier 
Models 228-100, 228-101, 228-200, 228-201, 228-202, and 228-212 
airplanes was published in the Federal Register as a notice of proposed 
rulemaking (NPRM) on March 26, 1998 (63 FR 14658). The NPRM proposed to 
require modifying the logic in the failure detection circuits of the 
landing gear uplock switches. Accomplishment of the proposed action as 
specified in the NPRM would be in accordance with Dornier Service 
Bulletin No. SB-228-215, Revision No. 1, dated January 31, 1995.
    The NPRM was the result of mandatory continuing airworthiness 
information (MCAI) issued by the airworthiness authority for Germany.
    Interested persons have been afforded an opportunity to participate 
in the making of this amendment. No comments were received on the 
proposed rule or the FAA's determination of the cost to the public.

The FAA's Determination

    After careful review of all available information related to the 
subject presented above, the FAA has determined that air safety and the 
public interest require the adoption of the rule as proposed except for 
minor editorial corrections. The FAA has determined that these minor 
corrections will not change the meaning of the AD and will not add any 
additional burden upon the public than was already proposed.

Cost Impact

    The FAA estimates that 26 airplanes in the U.S. registry will be 
affected by this AD, that it will take approximately 32 workhours per 
airplane to accomplish this action, and that the average labor rate is 
approximately $60 an hour. Based on these figures, the total cost 
impact of this AD on U.S. operators is estimated to be $49,920, or 
$1,920 per airplane.

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 copy of the final evaluation prepared for this 
action is contained in the Rules Docket. A copy of it may be obtained 
by contacting 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 a new airworthiness directive 
(AD) to read as follows:
98-11-16  Dornier Luftfahrt GMBH: Amendment 39-10541; Docket No. 97-
CE-121-AD.

    Applicability: Models 228-100, 228-101, 228-200, 228-201, 228-
202, and 228-212

[[Page 29099]]

airplanes, serial numbers 0001 through 8235, 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 within the next 100 hours time-in-service 
(TIS) after the effective date of this AD, unless already 
accomplished.
    To prevent a false warning indication of landing gear failure 
because of the design of the landing gear warning system, which 
could result in incorrect actions from the pilot based on the 
warning indications, accomplish the following:
    (a) Modify the logic in the failure detection circuits of the 
landing gear uplock switches in accordance with the ACCOMPLISHMENT 
INSTRUCTIONS section of Dornier Service Bulletin No. SB-228-215, 
Revision No. 1, dated January 31, 1995.
    (b) 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.
    (c) An alternative method of compliance or adjustment of the 
compliance time that provides an equivalent level of safety may be 
approved by the Manager, Small Airplane Directorate, 1201 Walnut, 
suite 900, Kansas City, Missouri 64016. The request shall be 
forwarded through an appropriate FAA Maintenance Inspector, who may 
add comments and then send it to the Manager, Small Airplane 
Directorate.

    Note 2: Information concerning the existence of approved 
alternative methods of compliance with this AD, if any, may be 
obtained from the Small Airplane Directorate.

    (d) Questions or technical information related to Dornier 
Service Bulletin No. SB-228-215, Revision No. 1, dated January 31, 
1995, should be directed to Daimler-Benz Aerospace, Dornier, Product 
Support, P.O. Box 1103, D-82230 Wessling, Federal Republic of 
Germany; telephone: (08153) 300; facsimile: (08153) 302985. This 
service information may be examined at the FAA, Central Region, 
Office of the Regional Counsel, Room 1558, 601 E. 12th Street, 
Kansas City, Missouri 64106.
    (e) The modification required by this AD shall be done in 
accordance with Dornier Service Bulletin No. SB-228-215, Revision 
No. 1, dated January 31, 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 
Daimler-Benz Aerospace, Dornier, Product Support, P.O. Box 1103, D-
82230 Wessling, Federal Republic of Germany. Copies may be inspected 
at the FAA, Central Region, Office of the Regional Counsel, Room 
1558, 601 E. 12th Street, Kansas City, Missouri, 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 German AD 95-246, 
dated August 23, 1995.
    (f) This amendment becomes effective on July 11, 1998.

    Issued in Kansas City, Missouri, on May 15, 1998.
Michael Gallagher,
Manager, Small Airplane Directorate, Aircraft Certification Service.
[FR Doc. 98-13820 Filed 5-27-98; 8:45 am]
BILLING CODE 4910-13-U