79952 Federal Register / Vol. 75, No. 244 / Tuesday, December 21, 2010 / Rules and Regulations Unsafe Condition DEPARTMENT OF TRANSPORTATION 1601 Lind Avenue, SW., Renton, (d) This AD was prompted by an accident Washington 98057–3356; telephone and the subsequent discovery of cracks in the Federal Aviation Administration (425) 227–1137; fax (425) 227–1149. main rotor blade (blade) spars. We are issuing SUPPLEMENTARY INFORMATION: 14 CFR Part 39 this AD to prevent blade failure and Discussion subsequent loss of control of the helicopter. [Docket No. FAA–2009–0864; Directorate We issued a supplemental notice of Compliance Identifier 2008–NM–202–AD; Amendment 39–16544; AD 2010–26–05] proposed rulemaking (NPRM) to amend (e) Before further flight, unless already 14 CFR part 39 to include an AD that done: RIN 2120–AA64 would apply to the specified products. (1) Revise the Limitations section of the That supplemental NPRM was Airworthiness Directives; DASSAULT Instructions for Continued Airworthiness by published in the Federal Register on AVIATION Model Falcon 10 Airplanes; establishing a life limit of 8,000 hours time- July 27, 2010 (75 FR 43878). That Model FAN JET FALCON, FAN JET in-service (TIS) for each blade set Remove supplemental NPRM proposed to FALCON SERIES C, D, E, F, and G each blade set with 8,000 or more hours TIS. correct an unsafe condition for the Airplanes; Model MYSTERE-FALCON (2) Replace each specified serial-numbered specified products. The MCAI states: 200 Airplanes; Model MYSTERE- blade set with an airworthy blade set in During maintenance on one aircraft, it was accordance with the following table: FALCON 20–C5, 20–D5, 20–E5, and 20– F5 Airplanes; Model FALCON 2000 and discovered that the overpressure capsules were broken on both pressurization valves. Blade-set Serial No. Replace within FALCON 2000EX Airplanes; and Model Failure of the pressurization control MYSTERE-FALCON 50 and MYSTERE- regulating valve (overpressure capsule) will 101, 403, 408, 409, 400 hours TIS. FALCON 900 Airplanes, and FALCON affect the aircraft’s overpressure protection, 411, and 415. 900EX Airplanes possibly resulting in a structural failure in 417 and 419 .............. 700 hours TIS. case of combination with another 405 ............................ 1000 hours TIS. AGENCY: Federal Aviation pressurization system failure. Consequently, Administration (FAA), Department of Dassault Aviation has developed a repetitive check of this outflow valve capsule, which Subject Transportation (DOT). has already been introduced into the ACTION: Final rule. (f) Joint Aircraft System Component Maintenance of Components section (chapter (JASC)/Air Transport Association (ATA) of SUMMARY: We are adopting a new 5–20) of the relevant Aircraft Maintenance America Code: 6210 Main Rotor Blades. Manuals (AMMs). airworthiness directive (AD) for the For the reason described above, this EASA Alternative Methods of Compliance products listed above. This AD results [European Aviation Safety Agency] (AMOCs) from mandatory continuing Airworthiness Directive (AD) requires a (g) The Manager, Boston Aircraft airworthiness information (MCAI) repetitive check of the outflow valve overpressure capsule, as it will also be Certification Office, FAA, has the authority to originated by an aviation authority of introduced into the Airworthiness approve AMOCs for this AD, if requested, another country to identify and correct an unsafe condition on an aviation Limitations section (chapter 5–40) of the using the procedures found in 14 CFR 39.19. respective AMMs. In accordance with 14 CFR 39.19, send your product. The MCAI describes the unsafe The unsafe condition is request to your principal inspector or local condition as: overpressurization, which can result in Flight Standards District Office, as During maintenance on one aircraft, it was appropriate. If sending information directly discovered that the overpressure capsules injury to the occupants and possible to the manager of the ACO, send it to the were broken on both pressurization valves. structural failure leading to loss of attention of the person identified in the Failure of the pressurization control control of the airplane. Required actions ‘‘Additional Information’’ section of this AD. regulating valve (overpressure capsule) will include repetitive inspections for affect the aircraft’s overpressure protection overpressure tightness on both Note: Before using any approved AMOC, * * *. regulating valves, and replacing the we request that you notify your principal affected valve with a serviceable unit if inspector or if you have no principal * * * * * necessary. You may obtain further inspector, your local Flight Standards District The unsafe condition is information by examining the MCAI in Office. overpressurization, which can result in the AD docket. Additional Information injury to the occupants and possible structural failure leading to loss of Comments (h) For more information about this AD, control of the airplane. We are issuing We gave the public the opportunity to contact Nicholas Faust, Aerospace Engineer, this AD to require actions to correct the participate in developing this AD. We Boston Aircraft Certification Office, FAA, 12 unsafe condition on these products. considered the comment received. New England Executive Park; telephone: 781–283–7763; fax: 781–238–7170; e-mail: DATES: This AD becomes effective Request for Certain Airplanes To Be [email protected]. January 25, 2011. Included in the Time Extension ADDRESSES: You may examine the AD Issued in Fort Worth, Texas, on December Dassault Aviation requested that we 14, 2010. docket on the Internet at http:// revise the supplemental NPRM to www.regulations.gov or in person at the Bruce Cain, extend the time interval for Model U.S. Department of Transportation, Mystere-Falcon 50 airplanes, for the Acting Manager, Rotorcraft Directorate, Docket Operations, M–30, West overpressure tightness check that was Aircraft Certification Service. Building Ground Floor, Room W12–140, specified in the supplemental NPRM. [FR Doc. 2010–31960 Filed 12–20–10; 8:45 am] 1200 New Jersey Avenue, SE., The extension of the time interval BILLING CODE 4910–13–P Washington, DC. specified in the supplemental NPRM FOR FURTHER INFORMATION CONTACT: Tom was from 1,630 flight hours to 1,640 Rodriguez, Aerospace Engineer, flight hours for other models. International Branch, ANM–116, We agree to extend the time interval Transport Airplane Directorate, FAA, for Model Mystere-Falcon 50 airplanes VerDate Mar<15>2010 22:26 Dec 20, 2010 Jkt 223001 PO 00000 Frm 00006 Fmt 4700 Sfmt 4700 E:\FR\FM\21DER1.SGM 21DER1 jlentini on DSKJ8SOYB1PROD with RULES Federal Register / Vol. 75, No. 244 / Tuesday, December 21, 2010 / Rules and Regulations 79953 in the final rule. The original NPRM Costs of Compliance contains the NPRM, the regulatory defined a time interval for Model We estimate that this AD will affect evaluation, any comments received, and MYSTERE-FALCON 50, MYSTERE- 1,082 products of U.S. registry. We also other information. The street address for FALCON 900, FALCON 900EX, estimate that it will take about 1 work- the Docket Operations office (telephone FALCON 2000, and FALCON 2000EX hour per product to comply with the (800) 647–5527) is in the ADDRESSES airplanes. The supplemental NPRM basic requirements of this AD. The section. Comments will be available in extended the time interval for Model average labor rate is $85 per work-hour. the AD docket shortly after receipt. MYSTERE-FALCON 900, FALCON Based on these figures, we estimate the List of Subjects in 14 CFR Part 39 900EX, FALCON 2000, and FALCON cost of this AD to the U.S. operators to Air transportation, Aircraft, Aviation 2000EX airplanes. The extended be $91,970, or $85 per product. interval for Model MYSTERE-FALCON safety, Safety. Authority for This Rulemaking 50 airplanes from 1,630 flight hours to Adoption of the Amendment 1,640 flight hours was coordinated with Title 49 of the United States Code ■ EASA. We have revised Table 1 of specifies the FAA’s authority to issue Accordingly, under the authority paragraph (g)(1) of the final rule rules on aviation safety. Subtitle I, delegated to me by the Administrator, accordingly. section 106, describes the authority of the FAA amends 14 CFR part 39 as ‘‘ follows: Request for Inclusion of the Latest the FAA Administrator. Subtitle VII: ’’ Procedure Aviation Programs, describes in more PART 39—AIRWORTHINESS detail the scope of the Agency’s DIRECTIVES Dassault Aviation requested that we authority. revise the supplemental NPRM to refer We are issuing this rulemaking under ■ 1. The authority citation for part 39 to the most current version of Dassault the authority described in ‘‘Subtitle VII, continues to read as follows: Maintenance Procedure 21–160, of the Part A, Subpart III, Section 44701: Authority: 49 U.S.C. 106(g), 40113, 44701. Dassault Falcon 50/50EX Maintenance General requirements.’’ Under that Manual. Dassault Aviation explains that section, Congress charges the FAA with § 39.13 [Amended] the referenced maintenance procedure promoting safe flight of civil aircraft in ■ 2. The FAA amends § 39.13 by adding has been updated with a new picture air commerce by prescribing regulations the following new AD: for practices, methods, and procedures and that the procedure is now dated 2010–26–05 DASSAULT AVIATION: January 2010. the Administrator finds necessary for Amendment 39–16544. Docket No. safety in air commerce. This regulation We agree for the reasons stated by the FAA–2009–0864; Directorate Identifier is within the scope of that authority commenter. We have revised Table 2 of 2008–NM–202–AD. because it addresses an unsafe condition the final rule to refer to Dassault Effective Date that is likely to exist or develop on Maintenance Procedure 21–160, dated products identified in this rulemaking (a) This airworthiness directive (AD) January 2010, as a source of guidance on action. becomes effective January 25, 2011. inspecting for overpress tightness on Affected ADs both valves for Model MYSTERE- Regulatory Findings (b) None. FALCON 50 airplanes. We determined that this AD will not Applicability Conclusion have federalism implications under Executive Order 13132.