[Federal Register Volume 62, Number 219 (Thursday, November 13, 1997)] [Rules and Regulations] [Pages 60773-60775] From the Federal Register Online via the Government Publishing Office [www.gpo.gov] [FR Doc No: 97-29789] ----------------------------------------------------------------------- DEPARTMENT OF TRANSPORTATION Federal Aviation Administration 14 CFR Part 39 [Docket No. 97-NM-275-AD; Amendment 39-10202; AD 97-21-16] RIN 2120-AA64 Airworthiness Directives; Dassault Model Mystere-Falcon 50 Series Airplanes AGENCY: Federal Aviation Administration, DOT. ACTION: Final rule; request for comments. ----------------------------------------------------------------------- SUMMARY: This document publishes in the Federal Register an amendment adopting airworthiness directive (AD) 97-21-16 that was sent previously to all known U.S. owners and operators of Dassault Model Mystere-Falcon series airplanes by individual notices. This AD requires a revision to the Limitations section of the FAA-approved Airplane Flight Manual (AFM) to include procedures to use certain values to correctly gauge the minimum allowable N1 speed of the operative engines during operation in icing conditions. This action is prompted by a report indicating that erroneous minimum anti-icing N1 thrust setting indications were displayed on the Engine Indication Electronic Display (EIED). The actions specified by this AD are intended to prevent flightcrew use of erroneous N1 thrust setting information displayed on the EIED, which could result in in-flight shutdown of engine(s). [[Page 60774]] DATES: Effective November 18, 1997, to all persons except those persons to whom it was made immediately effective by emergency AD 97-21-16, issued October 14, 1997, which contained the requirements of this amendment. Comments for inclusion in the Rules Docket must be received on or before December 15, 1997. ADDRESSES: Submit comments in triplicate to the Federal Aviation Administration (FAA), Transport Airplane Directorate, ANM-103, Attention: Rules Docket No. 97-NM-275-AD, 1601 Lind Avenue, SW., Renton, Washington 98055-4056. FOR FURTHER INFORMATION CONTACT: 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: On October 14, 1997, the FAA issued emergency AD 97-21-16, which is applicable to Dassault Model Mystere- Falcon 50 series airplanes. That action was prompted by a report indicating that erroneous minimum anti-icing N1 thrust setting indications were displayed on the Engine Indication Electronic Display (EIED). The erroneous minimum N1 indications do not correspond with minimums specified in the Normal Procedures Section of the FAA-approved Airplane Flight Manual (AFM) for operations in icing conditions. This condition, if not corrected, could result in flightcrew use of erroneous N1 thrust setting information displayed on the EIED and consequent in-flight shutdown of engine(s). FAA's Conclusions 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 21.29) 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, 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 Requirements of the Rule Since the unsafe condition described is likely to exist or develop on other airplanes of the same type design registered in the United States, the FAA issued emergency AD 97-21-16 to prevent flightcrew use of erroneous N1 thrust setting information displayed on the EIED, which could result in in-flight shutdown of engine(s). The AD requires revision of the Limitations Section of the AFM to include procedures to use values indicated in Normal Section 4, Sub-section 140, Page 2, of the AFM to correctly gauge the minimum allowable N1 speed of the operative engines during operation in icing conditions. Interim Action This AD is considered to be interim action until final action is identified, at which time the FAA may consider additional rulemaking. Publication and Effectivity of AD Since it was found that immediate corrective action was required, notice and opportunity for prior public comment thereon were impracticable and contrary to the public interest, and good cause existed to make the AD effective immediately by individual notices issued on October 14, 1997, to all known U.S. owners and operators of Dassault Model Mystere-Falcon series airplanes. These conditions still exist, and the AD is hereby published in the Federal Register as an amendment to section 39.13 of the Federal Aviation Regulations (14 CFR 39.13) to make it effective as to all persons. Comments Invited Although this action is in the form of a final rule that involves requirements affecting flight safety and, thus, was not preceded by notice and an 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 Number 97-NM-275-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. The FAA has determined that this regulation is an emergency regulation that must be issued immediately to correct an unsafe condition in aircraft, and that it is not a ``significant regulatory action'' under Executive Order 12866. It has been determined further that this action involves an emergency regulation under DOT Regulatory Policies and Procedures (44 FR 11034, February 26, 1979). If it is determined that this emergency regulation otherwise would be significant under DOT Regulatory Policies and Procedures, a final regulatory evaluation will be prepared and placed in the Rules Docket. A copy of it, if filed, 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, 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 60775]] Sec. 39.13 [Amended] 2. Section 39.13 is amended by adding the following new airworthiness directive: 97-21-16 Dassault Aviation: Amendment 39-10202. Docket 97-NM-275- AD. Applicability: Model Mystere-Falcon 50 series airplanes, serial numbers 251, 253, and subsequent, equipped with Allied-Signal TFE- 731-40 engines; 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 in-flight shutdown of the engine(s) due to the flightcrew using erroneous N1 speed values displayed on the Engine Indication Electronic Display (EIED), accomplish the following: (a) Within 1 day after the effective date of this AD, revise the Limitations Section of the FAA-approved Airplane Flight Manual (AFM) to add the following. This may be accomplished by inserting a copy of this AD in the AFM. ``Operation in Icing Conditions: The N1 speed of the operating engines must not be less than the minimum values specified in Normal Section 4, Sub-section 140, Page 2, of the AFM.'' (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, Transport Airplane Directorate. Operators shall submit their requests through an appropriate FAA Principal Operations 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. Note 3: The subject of this AD is addressed in French telegraphic airworthiness directive No. T 97-310-019 (B), dated October 10, 1997. (d) This amendment becomes effective on November 18, 1997, to all persons except those persons to whom it was made immediately effective by emergency AD 97-21-16, issued October 14, 1997, which contained the requirements of this amendment. Issued in Renton, Washington, on November 5, 1997. Darrell M. Pederson, Acting Manager, Transport Airplane Directorate, Aircraft Certification Service. [FR Doc. 97-29789 Filed 11-12-97; 8:45 am] BILLING CODE 4910-13-P