AD 98-08-28

AD Final Rules - DRS_98-08-28.html
Copy URL
Print/Save as PDF
Document Versions
 Feedback
Details
AD Number:
98-08-28
Document Type:
AD Final Rules
Docket Number:
97-CE-88-AD
Subject Heading:
Airworthiness Directives; Avions Pierre Robin Model R3000/160 Airplanes.
Subject:
Nose Landing Gear Bolts
Status:
Current
Citation:
Federal Register: April 20, 1998 (Volume 63, Number 75
Citation Publish Date:
04/20/1998
Effective Date:
05/15/1998
Make:
APEX Aircraft
Model:
R3000/160
Product Type:
Aircraft
Product Subtype:
Small Airplane
Affected AD:
Superseded AD:
Affected By:
Superseded By:
Service/Office:
Office of Primary Responsibility:
CFR Part Reference:
Part 39 [63 FR 19388 No. 75 04/20/98]
Comments:
AIRWORTHINESS DIRECTIVES FINAL RULES: 98-08-28
CITATION:   [Federal Register: April 20, 1998 (Volume 63, Number 75]

PAGE NUMBER:   [Page 19388]

DOCKET NUMBER:   97-CE-88-AD

AMENDMENT:   39-10477

AD NUMBER:   98-08-28

SUBJECT HEADING:   Airworthiness Directives; Avions Pierre Robin Model R3000/160 Airplanes.

ACTION:   Final rule; request for comments.

SUMMARY:   This amendment adopts a new airworthiness directive (AD) that applies to all Avions Pierre Robin (Avions) Model R3000/160 airplanes. This action requires replacing the top bolts in the front wheel fork assembly and the top bolts attaching the front landing gear to the engine mount. This AD is the result of mandatory continuing airworthiness information (MCAI) issued by the airworthiness authority for France. The actions specified by this AD are intended to prevent collapse of the nose landing gear, which could result in loss of control of the airplane during taxi and landing operations.

DATES:   Effective May 15, 1998. The incorporation by reference of certain publications listed in the regulations is approved by the Director of the Federal Register as of May 15, 1998. Comments for inclusion in the Rules Docket must be received on or before May 15, 1998

ADDRESSES:   Submit comments in triplicate to the Federal Aviation Administration (FAA), Central Region, Office of the Regional Counsel, Attention: Rules Docket 97-CE-88-AD, Room 1558, 601 E. 12th Street, Kansas City, Missouri 64106.
Service information that applies to this AD may be obtained from Avions Pierre Robin, 1 route de Troyes 21121 Darois, France; telephone: 03.80.44.20.50; facsimile: 03.80.35.60.80. This information may also be examined at the Federal Aviation Administration (FAA), Central Region, Office of the Regional Counsel, Attention: Rules Docket 97-CE-88-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:   Karl Schletzbaum, Aerospace Engineer, FAA, Small Airplane Directorate, Aircraft Certification Service, 1201 Walnut, suite 900, Kansas City, Missouri; telephone: (816) 426-6934, facsimile: (816) 426-2169.

SUPPLEMENTARY INFORMATION:  
Discussion
The Direction Generale De L’Aviation Civile (DGAC), which is the airworthiness authority for France, recently notified the FAA that an unsafe condition may exist on all Avions Model R3000/160 airplanes. The DGAC reports that the two top bolts connecting the front wheel fork to the sliding leg, and the two top bolts attaching the front landing gear to the engine mount, broke while being installed during a routine maintenance inspection. The bolts failed when torqued onto the landing gear assembly.

The DGAC investigation revealed that the materials used during manufacture of the bolts were not of high enough strength to accommodate the load conditions required for these airplanes.

This condition, if not corrected, could result in collapse of the nose landing gear during taxi or landing operations.

Relevant Service Information
Avions has issued Service Bulletin No. 151, dated July 8, 1996, which specifies procedures for replacing the two top bolts, part number (P/N) 27.36.36.001, with new bolts of improved design, P/N 42.36.00.050.

The DGAC classified this service bulletin as mandatory and issued French AD 96-285(A), dated December 4, 1996, in order to assure the continued airworthiness of these airplanes in France.

The FAA's Determination
This airplane model is manufactured in France and is type certificated for operation in the United States under the provisions of section 21.29 of the Federal Aviation Regulations (14 CFR 21.19) and the applicable bilateral airworthiness agreement. Pursuant to this bilateral airworthiness agreement, the DGAC has kept the FAA informed of the situation described above.

The FAA has examined the findings of the DGAC; reviewed all available information, including the service information and modification referenced above; and determined that AD action is necessary for products of this type design that are certificated for operation in the United States.

Explanation of the Provisions of This AD
Since an unsafe condition has been identified that is likely to exist or develop on other Avions Model R3000/160 airplanes of the same type design registered in the United States, the FAA is issuing an AD. This AD requires replacing the two top bolts connecting the front wheel fork to the sliding leg, and the two top bolts attaching the front landing gear to the engine mount. Accomplishment of the replacement would be in accordance with Avions Pierre Robin Service Bulletin No. 151, dated July 8, 1996.

Cost Impact
None of the Avions Model R3000/160 airplanes affected by this action are on the U.S. Register. All airplanes included in the applicability of this rule currently are operated by non-U.S. operators under foreign registry; therefore, they are not directly affected by this AD action. However, the FAA considers this rule necessary to ensure that the unsafe condition is addressed in the event that any of these subject airplanes are imported and placed on the U.S. Register.

Should an affected airplane be imported and placed on the U.S. Register, accomplishment of the required replacement would take approximately 2 workhours at an average labor charge of $60 per workhour. Parts cost approximately $50 per airplane. Based on these figures, the total cost impact of this AD would be $170 per airplane that would become registered in the United States.

The Effective Date of This AD
Since this AD action does not affect any airplane that is currently on the U.S. register, it has no adverse economic impact and imposes no additional burden on any person. Therefore, notice and public procedures hereon are unnecessary and the amendment may be made effective in less than 30 days after publication in the Federal Register.

Comments Invited
Although this action is in the form of a final rule and was not preceded by notice and opportunity for public comment, comments are invited on this rule. Interested persons are invited to comment on this rule by submitting such written data, views, or arguments as they may desire. Communications shall identify the Rules Docket number and be submitted in triplicate to the address specified under the caption "ADDRESSES." All communications received on or before the closing date for comments will be considered, and this rule may be amended in light of the comments received. Factual information that supports the commenter's ideas and suggestions is extremely helpful in evaluating the effectiveness of the AD action and determining whether additional rulemaking action would be needed.

Comments are specifically invited on the overall regulatory, economic, environmental, and energy aspects of the rule that might suggest a need to modify the rule. All comments submitted will be available, both before and after the closing date for comments, in the Rules Docket for examination by interested persons. A report that summarizes each FAA-public contact concerned with the substance of this AD will be filed in the Rules Docket.

Commenters wishing the FAA to acknowledge receipt of their comments submitted in response to this rule must submit a self-addressed, stamped postcard on which the following statement is made: "Comments to Docket No. 97-CE-88-AD." The postcard will be date stamped and returned to the commenter.

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.

§ 39.13 [Amended]
2. Section 39.13 is amended by adding a new airworthiness directive (AD) to read as follows:

REGULATORY TEXT:  
98-08-28 AVIONS PIERRE ROBIN: Amendment 39-10477; Docket No. 97-CE-88-AD.

Applicability: Model R3000/160 airplanes, all serial numbers, 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 (d) 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 prior to further flight after the effective date of this AD, unless already accomplished.

To prevent collapse of the nose landing gear, which could result in loss of control of the airplane during taxi and landing operations, accomplish the following:

(a) Replace the top two bolts, part number (P/N) 27.36.36.001 or an FAA-approved equivalent part number, that connect the front wheel fork to the sliding legs with bolts of improved design, P/N 42.36.00.050 or an FAA-approved equivalent part number, in accordance with Avions Pierre Robin (Avions) Service Bulletin (SB) No. 151, dated July 8, 1996.

(b) Replace the top two bolts, part number (P/N) 27.36.36.001 or an FAA-approved equivalent part number, that attach the front landing gear to the engine mount with bolts of improved design, P/N 42.36.00.050 or an FAA-approved equivalent part number, in accordance with Avions SB No. 151, dated July 8, 1996.

(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) 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, Aircraft Certification Service, 1201 Walnut, suite 900, Kansas City, Missouri 64106. 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.

(e) Questions or technical information related to Avions Pierre Robin Service Bulletin No. 151, dated July 8, 1996, should be directed to Avions Pierre Robin, 1 route de Troyes 21121 Darois, France; telephone 03.80.44.20.50; facsimile 03.80.35.60.80. 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.

(f) The replacement required by this AD shall be done in accordance with Avions Pierre Robin Service Bulletin No. 151, dated July 8, 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 Avions Pierre Robin, 1 route de Troyes 21121 Darois, France; telephone 03.80.44.20.50; facsimile 03.80.35.60.80. 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 French AD No. 96-285(A), dated December 4, 1996.

(g) This amendment becomes effective on May 15, 1998

FOOTER: