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Proposed Rules Federal Register Vol. 66, No. 48
Monday, March 12, 2001
This section of the FEDERAL REGISTER [email protected].’’ Comments sent Discussion contains notices to the public of the proposed via the Internet must contain the docket The FAA has received a report of an issuance of rules and regulations. The number in the subject line. Comments purpose of these notices is to give interested uncommanded engine power loss on a may be inspected at this location Textron Lycoming LTS101 turboshaft persons an opportunity to participate in the between 8:00 a.m. and 4:30 p.m., rule making prior to the adoption of the final engine. The current Type Certificate rules. Monday through Friday, except Federal holder has determined that the power holidays. loss was due to corrosion damage to the FOR FURTHER INFORMATION CONTACT: beryllium-copper bellows of the fuel DEPARTMENT OF TRANSPORTATION Robert Baitoo, Aerospace Engineer, Los control. The same beryllium-copper Angeles Aircraft Certification Office, bellows was used in fuel controls on Federal Aviation Administration FAA, Transport Airplane Directorate, Allison Engine Co. 250–B and 250–C 3960 Paramount Blvd., Lakewood, CA turboshaft and turboprop engines. The 14 CFR Part 39 90712–4137; telephone (562) 627-5245, FAA issued AD 98–24–28 that was [Docket No. 99–NE–17–AD] fax (562) 627–5210. published in the Federal Register on SUPPLEMENTARY INFORMATION: December 3, 1998 (63 FR 66735) to RIN 2120–AA64 require replacement of those beryllium- Comments Invited Airworthiness Directives; Honeywell copper bellows with Inconel 718 International Inc. Models LTS101– Interested persons are invited to stainless steel welded bellows. This 600A–2 and LTS101–600A–3 participate in the making of the condition, if not corrected, could result Turboshaft Engines; and LTP101– proposed rule by submitting such in the engine reducing the fuel flow to 600A–1A and LTP101–700A–1A written data, views, or arguments as minimum flow resulting in an Turboprop Engines they may desire. Communications uncommanded power loss. should identify the Rules Docket AGENCY: Federal Aviation number and be submitted in triplicate to Evaluation of the Unsafe Condition Administration, DOT. the address specified above. All Since an unsafe condition has been ACTION: Notice of proposed rulemaking communications received on or before identified that is likely to exist or (NPRM). the closing date for comments, specified develop on other LTS101–600A–2 and above, will be considered before taking LTS101–600A–3 turboshaft; and SUMMARY: This document proposes the action on the proposed rule. The LTP101–600A–1A and LTP101–700A– adoption of a new airworthiness proposals contained in this action may 1A turboprop engines of the same type directive (AD) that is applicable to be changed in light of the comments design, the proposed AD would require Honeywell International Inc. (formerly received. replacement of fuel controls with the AlliedSignal Inc. and Textron Comments are specifically invited on following part numbers with an Lycoming) Models LTS101–600A–2 and the overall regulatory, economic, improved design fuel control that LTS101–600A–3 turboshaft engines; and environmental, and energy aspects of incorporates an Inconel 718 stainless LTP101–600A–1A and LTP101–700A– the proposed rule. All comments steel welded bellows. 1A turboprop engines. This proposal submitted will be available, both before would require replacing certain fuel 4–301–098–01, 4–301–098–04, 4–301– and after the closing date for comments, 098–10, 4–301–098–15, 4–301–288– controls that have beryllium-copper in the Rules Docket for examination by bellows with improved fuel controls 01, 4–301–288–04, 4–303–023–01, 4– interested persons. A report 303–023–02, 4–303–023–03, 4–303– that incorporate Inconel 718 stainless summarizing each FAA-public contact steel welded bellows. This proposal is 023–04, 4–303–033–01, 4–303–033– concerned with the substance of this 02, and 4–303–033–04 prompted by a report of an proposal will be filed in the Rules uncommanded power loss on a Textron Docket. Economic Impact Lycoming LTS101 engine due to a Commenters wishing the FAA to The FAA estimates that 40 engines corrosion damaged fuel control bellows. acknowledge receipt of their comments installed on aircraft of U.S. registry The actions specified by the proposed submitted in response to this action would be affected by this proposed AD AD are intended to prevent the engine must submit a self-addressed, stamped and that it would take approximately 3 from reducing the fuel flow to minimum postcard on which the following work hours per engine to accomplish flow resulting in an uncommanded statement is made: ‘‘Comments to the proposed actions. The average labor power loss. Docket Number 99–NE–17–AD.’’ The rate is $60 per work hour. There are no DATES: Comments must be received by postcard will be date stamped and required parts costs. Based on these May 11, 2001. returned to the commenter. figures, the total cost impact of the ADDRESSES: Submit comments in proposed AD on U.S. operators is Availability of NPRM’s triplicate to the Federal Aviation estimated to be $7,200. Administration (FAA), New England Any person may obtain a copy of this Region, Office of the Regional Counsel, NPRM by submitting a request to the Regulatory Impact Attention: Rules Docket No. 99–NE–17– FAA, New England Region, Office of the This proposed rule does not have AD, 12 New England Executive Park, Regional Counsel, Attention: Rules federalism implications, as defined in Burlington, MA 01803–5299. Comments Docket No. 99–NE–17–AD, 12 New Executive Order 13132, because it may also be sent via the Internet using England Executive Park, Burlington, MA would not have a substantial direct the following address: ‘‘9-ane- 01803–5299. effect on the States, on the relationship
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between the national government and action is contained in the Rules Docket. PART 39—AIRWORTHINESS the States, or on the distribution of A copy of it may be obtained by DIRECTIVES power and responsibilities among the contacting the Rules Docket at the various levels of government. location provided under the caption 1. The authority citation for part 39 continues to read as follows: Accordingly, the FAA has not consulted ADDRESSES. with state authorities prior to Authority: 49 U.S.C. 106(g), 40113, 44701. publication of this proposed rule. List of Subjects in 14 CFR Part 39 § 39.13 [Amended] For the reasons discussed above, I Air transportation, Aircraft, Aviation 2. Section 39.13 is amended by certify that this proposed regulation (1) safety, Safety. adding the following new airworthiness is not a ‘‘significant regulatory action’’ directive: under Executive Order 12866; (2) is not The Proposed Amendment a ‘‘significant rule’’ under the DOT Honeywell International, Inc.: Docket No. Accordingly, pursuant to the 99–NE–17–AD. Regulatory Policies and Procedures (44 authority delegated to me by the FR 11034, February 26, 1979); and (3) if Applicability: This airworthiness directive Administrator, the Federal Aviation promulgated, will not have a significant (AD) is applicable to Honeywell Administration proposes to amend part International, Inc. (formerly AlliedSignal Inc. economic impact, positive or negative, and Textron Lycoming) Models LTS101– on a substantial number of small entities 39 of the Federal Aviation Regulations (14 CFR part 39) as follows: 600A–2 and LTS101–600A–3 turboshaft and under the criteria of the Regulatory LTP101–600A–1A and LTP101–700A–1A Flexibility Act. A copy of the draft turboprop engines with fuel controls with the regulatory evaluation prepared for this following part numbers (P/N’s) installed:
TABLE 1.—FUEL CONTROL P/N’S
Engine model No. Fuel Control P/N
1. LTS101–600A–2 ...... 4–301–098–01, 4–301–098–04, 4–301–098–10, 4–301–098–15.
2. LTS101–600A–3 ...... 4–301–288–01, 4–301–288–04.
3. LTP101–600A–1A ...... 4–303–023–01, 4–303–023–02, 4–303–023–03, 4–303–023–04.
4. LTP101–700A–1A ...... 4–303–033–01, 4–303–033–02, 4–303–033–04.
These engines are used on, but not limited used if approved by the Manager, Los DEPARTMENT OF TRANSPORTATION to, Aerospatiale AS350 helicopters and Air Angeles Aircraft Certification Office Tractor AT–302, Page Thrush, Piaggio P.166– (LAACO). Operators shall submit their Federal Aviation Administration DL3, and Riley International R421 airplanes. request through an appropriate FAA Note 1: This AD applies to each engine Principal Maintenance Inspector, who may 14 CFR Part 39 identified in the preceding applicability add comments and then send it to the [Docket No. 99–NE–16–AD] provision, regardless of whether it has been Manager, LAACO. modified, altered, or repaired in the area RIN 2120–AA64 subject to the requirements of this AD. For Note 2: Information concerning the engines that have been modified, altered, or existence of approved alternative methods of repaired so that the performance of the compliance with this airworthiness directive, Airworthiness Directives; Honeywell requirements of this AD is affected, the if any, may be obtained from the LAACO. International, Inc. LTP 101 Series owner/operator must request approval for an Turboprop and LTS101 Series alternative method of compliance in Special Flight Permits Turboshaft Engines accordance with paragraph (b) of this AD. (c) Special flight permits may be issued in The request should include an assessment of AGENCY: Federal Aviation the effect of the modification, alteration, or accordance §§ 21.197 and 21.199 of the Administration, DOT. repair on the unsafe condition addressed by Federal Aviation Regulations (14 CFR 21.197 ACTION: Notice of proposed rulemaking this AD; and, if the unsafe condition has not and 21.199) to operate the aircraft to a (NPRM). been eliminated, the request should include location where the requirements of this AD specific proposed actions to address it. can be accomplished. SUMMARY: This document proposes the Compliance: Compliance with this AD is Issued in Burlington, Massachusetts, on adoption of a new airworthiness required at the next replacement of the fuel March 1, 2001. directive (AD) that is applicable to control or within 12 calendar months after certain Honeywell International, Inc. David A. Downey, the effective date of this AD, whichever (formerly AlliedSignal, Inc. and Textron occurs first. Acting Manager, Engine and Propeller To prevent a decrease in fuel flow to Lycoming) LTP 101 series turboprop Directorate, Aircraft Certification Service. and LTS101 series turboshaft engines. minimum flow that could result in an [FR Doc. 01–5738 Filed 3–9–01; 8:45 am] uncommanded power loss, do the following: This proposal would require a new life (a) Remove any fuel control that has one BILLING CODE 4910–13–U limitation and removal of rigid tube fuel of the P/N’s listed in Table 1 of this AD, and manifold assemblies and replacement replace with a fuel control that does not have with serviceable assemblies. This one of the part numbers listed in Table 1 of proposal is prompted by reports of this AD. cracking and fuel leakage of rigid tube Alternative Methods of Compliance fuel manifolds. The actions specified by (b) An alternative method of compliance or the proposed AD are intended to adjustment of the compliance time that prevent engine fuel leakage due to low- provides an acceptable level of safety may be cycle fatigue (LCF) cracking of the rigid
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