Department of Transportation 2010 – Federal Register Recent Federal Regulation Documents
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Amendment of Class E Airspace; Mountain View, AR
This action amends Class E airspace for Mountain View, AR. Decommissioning of the Wilcox non-directional beacon (NDB) at Mountain View Wilcox Memorial Field Airport, Mountain View, AR, has made this action necessary to enhance the safety and management of Instrument Flight Rule (IFR) operations at the airport.
Amendment of Class E Airspace; Magnolia, AR
This action amends Class E airspace for Magnolia, AR. Decommissioning of the Magnolia non-directional beacon (NDB) at Magnolia Municipal Airport, Magnolia, AR has made this action necessary to enhance the safety and management of Instrument Flight Rule (IFR) operations at the airport.
Airworthiness Directives; Gulfstream Aerospace LP (Type Certificate Previously Held by Israel Aircraft Industries, Ltd.) Model Gulfstream G150 Airplanes
The FAA withdraws a notice of proposed rulemaking (NPRM) that proposed a new airworthiness directive (AD) for certain Model Gulfstream G150 airplanes. The proposed AD would have required inspecting to determine the manufacturer of the baggage compartment rubber seals, and replacing the baggage compartment rubber seals manufactured by Gumiyan with seals manufactured by Rubbercraft. Since the proposed AD was issued, we have received new data from the manufacturer stating that all affected airplanes have already been modified as described in the proposed AD. Accordingly, the proposed AD is withdrawn.
Prohibition Against Certain Flights Within the Territory and Airspace of Afghanistan
This action would permit certain U.S. civil aircraft operations below flight level (FL) 160 within the territory and airspace of Afghanistan, when approved by the FAA as provided herein. Otherwise, flight operations below FL 160 would be prohibited within the territory and airspace of Afghanistan by all U.S. air carriers; U.S. commercial operators; persons exercising the privileges of a U.S. airman certificate, except when that person is operating a U.S.- registered aircraft for a foreign air carrier; and operators of U.S.-registered aircraft, except when such operators are foreign air carriers. The FAA finds this action necessary to prevent a potential hazard to persons and aircraft engaged in such flight operations.
Reports, Forms and Record Keeping Requirements, Agency Information Collection Activity Under OMB Review
Before a Federal agency can collect certain information from the public, the agency must receive approval from the Office of Management and Budget (``OMB''). Under procedures established by the Paperwork Reduction Act of 1995 (44 U.S.C. 3501 et seq.), before seeking OMB approval, Federal agencies must solicit public comment on proposed collections of information, including extensions and reinstatements of previously approved collections. In compliance with the Paperwork Reduction Act of 1995, this notice describes one collection of information for which NHTSA intends to seek OMB approval.
Petition for Exemption; Summary of Petition Received
This notice contains a summary of a petition seeking relief from specified requirements of 14 CFR. The purpose of this notice is to improve the public's awareness of, and participation in, this aspect of FAA's regulatory activities. Neither publication of this notice nor the inclusion or omission of information in the summary is intended to affect the legal status of the petition or its final disposition.
Petition for Exemption; Summary of Petition Received
This notice contains a summary of a petition seeking relief from specified requirements of 14 CFR. The purpose of this notice is to improve the public's awareness of, and participation in, this aspect of FAA's regulatory activities. Neither publication of this notice nor the inclusion or omission of information in the summary is intended to affect the legal status of the petition or its final disposition.
Notice of Final Federal Agency Actions on a Proposed Highway Project in California
This notice announces actions taken by the FHWA and other Federal agencies that are final within the meaning of 23 U.S.C. 139(1)(1). This action relates to an approval of a proposed highway project corridor.
The New York North Shore Helicopter Route
This proposed action would require helicopter operators to use the New York North Shore Route when operating in that area of Long Island, New York. The North Shore Route was added to the New York Helicopter Route Chart in 2008 and the use of that route is currently voluntary. New York public officials have continued to receive complaints regarding the adverse impact of helicopter noise on their communities. The intended effect of this proposal is to maximize utilization of the existing route flown by helicopter traffic along the north shore of Long Island and reduce the noise impact on nearby communities.
Special Issuance of Airman Medical Certificates to Applicants Being Treated With Certain Antidepressant Medications; Re-Opening of Comment Period
This action re-opens the comment period on a policy statement published April 5, 2010, related to special issuance of airmen medical certificates to applicants using certain antidepressant medication. The comment period is re-opened for 30 days and responds to a request from the Air Line Pilots Association, International.
Motor Carrier Safety Advisory Committee Public Meeting
FMCSA announces that its Motor Carrier Safety Advisory Committee (MCSAC) will hold a three-day committee meeting concerning distracted driving by commercial motor vehicle (CMV) operators, from June 8 through June 10, 2010. This meeting is open to the public.
Safety Advisory 2010-01
FRA is issuing Safety Advisory 2010-01 in order to provide guidance to interested parties concerning the inspection and repair of FTTX series flatcars that have welded vertical hand brake supports that have been modified to accommodate a 10-inch wide hand brake step. FRA's Office of Railroad Safety Motive Power and Equipment (MP&E) Division has been notified that approximately 1,851 FTTX series flatcars that are owned by TTX Company (TTX) may have a notch cut into the vertical hand brake supports, which compromises the safety of the hand brake support angles.
Agency Request for Emergency Approval of an Information Collection
The Department of Transportation (DOT) provides notice that it will submit an information collection request (ICR) to the Office of Management and Budget (OMB) for emergency approval of a proposed information collection under the Paperwork Reduction Act of 1995 (Pub. L. 104-13, 44 U.S.C. 3501 et seq.). Upon receiving the requested six-month emergency approval by OMB, OST will follow the normal, 6 month PRA procedures to obtain extended approval for this proposed information collection. This collection involves the National Infrastructure Investments Grant Program or ``TIGER II Discretionary Grants'' pursuant to Title I of the Transportation, Housing and Urban Development, and Related Agencies Appropriations Act for 2010 (Div. A of the Consolidated Appropriations Act, 2010 (Pub. L. 111-117, Dec. 16, 2009)) (``FY 2010 Appropriations Act''). Title I established a new program for OST to provide Supplemental Discretionary Grants for National Infrastructure Investments. OST is referring to these grants as TIGER II Discretionary Grants which include promoting economic recovery and supporting projects that have a significant impact on the Nation, Metropolitan area or a region.
Amendment of Restricted Area R-2502A; Fort Irwin, CA
This action changes the controlling agency of Restricted Area R-2502A, Fort Irwin, CA, from ``FAA, Hi-Desert TRACON, Edwards, CA'' to ``FAA, Los Angeles ARTCC.'' The FAA is taking this action in response to an administrative change of responsibility for the restricted area. This action does not change any boundaries, times of designation, or activities conducted in the restricted airspace area.
Amendment and Establishment of Restricted Areas and Other Special Use Airspace, Avon Park Air Force Range, FL
This action restructures the special use airspace (SUA) at the Avon Park Air Force Range (APAFR), Florida. The changes provide additional restricted airspace needed for training in high altitude weapons releases and other hazardous activities, and reconfigure the military operations areas (MOA) to contain nonhazardous flight operations. These changes will permit realistic training in current tactics to be conducted at the Range and enable more efficient use of the National Airspace System.
Amendment of Class E Airspace; Pine Mountain, GA
This action proposes to amend Class E Airspace at Pine Mountain, GA, to accommodate the additional airspace needed for the Standard Instrument Approach Procedures (SIAPs) developed for Harris County Airport. This action enhances the safety and airspace management of Instrument Flight Rules (IFR) operations at the airport.
Ninth Meeting: Joint RTCA Special Committee 213: EUROCAE WG-79: Enhanced Flight Vision Systems/Synthetic Vision Systems (EFVS/SVS)
The FAA is issuing this notice to advise the public of a meeting of Joint RTCA Special Committee 213: EUROCAE WG-79: Enhanced Flight Vision Systems/Synthetic Vision Systems (EFVS/SVS).
Notice of Final Federal Agency Actions on Proposed Highway in Washington
This notice announces actions taken by the FHWA that are final within the meaning of 23 U.S.C. 139(l)(1). The actions relate to a proposed highway project, the SR 520, Medina to SR 202: Eastside Transit and HOV Project, in the State of Washington. Those actions grant approval for the project.
Office of Hazardous Materials Safety; Notice of Application for Special Permits
In accordance with the procedures governing the application for, and the processing of, special permits from the Department of Transportation's Hazardous Material Regulations (49 CFR part 107, subpart B), notice is hereby given that the Office of Hazardous Materials Safety has received the application described herein. Each mode of transportation for which a particular special permit is requested is indicated by a number in the ``Nature of Application'' portion of the table below as follows: 1Motor vehicle, 2Rail freight, 3Cargo vessel, 4Cargo aircraft only, 5Passenger-carrying aircraft.
Airworthiness Directives; Bell Helicopter Textron (Bell) Model 205A, 205A-1, 205B, 212, 412, 412EP, and 412CF and Agusta S.p.A. (Agusta) Model AB412, AB412EP Helicopters
This amendment adopts a new airworthiness directive (AD) for the Aeronautical Accessories, Inc. (AAI) Low Skid Landing Gear Forward Crosstube (Crosstube) on certain Bell and Agusta model helicopters. This action requires replacing certain AAI serial-numbered crosstubes installed on these model helicopters. This amendment is prompted by the discovery of a defect in the raw material used in manufacturing certain crosstubes. The actions specified in this AD are intended to prevent failure of a crosstube and subsequent collapse of the landing gear.
Airworthiness Directives; Hawker Beechcraft Corporation (Type Certificate No. A00010WI Previously Held by Raytheon Aircraft Company) Model 390 Airplanes
We propose to adopt a new airworthiness directive (AD) for certain Hawker Beechcraft Corporation Model 390 airplanes. This proposed AD would require inspecting for installation of certain serial number (S/N) starter generators and replacing the starter generator if one with an affected serial number is found. This proposed AD results from reports that starter generators with deficient armature insulating materials may have been installed on certain airplanes. We are proposing this AD to detect and replace starter generators with defective armature insulating materials. This condition could result in the loss of operation of one or both starter generators with consequent loss of all non-battery electrical power.
Airworthiness Directives; Various Aircraft Equipped With Rotax Aircraft Engines 912 A Series Engines
We propose to adopt a new airworthiness directive (AD) for the products listed above. This proposed AD results from mandatory continuing airworthiness information (MCAI) originated by an aviation authority of another country to identify and correct an unsafe condition on an aviation product. The MCAI describes the unsafe condition as: This Airworthiness Directive (AD) results from reports of
Carolina Coastal Railway, Inc.-Acquisition and Operation Exemption-Morehead & South Fork Railroad Co.
This document corrects a notice served and published in the Federal Register on January 15, 2010 (75 FR 2580), titled ``Carolina Coastal Railway, Inc.Acquisition and Operation ExemptionNorth Carolina State Ports Authority'' to reflect a correction submitted by Carolina Coastal Railway, Inc. (CLNA). CLNA filed a verified notice of exemption under 49 CFR 1150.41 to acquire, by assignment, the lease of Morehead & South Fork Railroad Co., Inc. (MHSF) with North Carolina State Ports Authority (SPA) and to operate approximately 0.87 miles of SPA's rail line. After the effective date of the exemption, CLNA filed a letter on February 16, 2010, notifying the Board that MHSF's counsel has advised CLNA that MHSF is not a party to any lease agreement with SPA and therefore was not assigning a lease to CLNA. Instead, MHSF assigned a freight easement and operating agreement to CNLA.\1\ This notice correctly identifies MHSF, instead of SPA, as the regulated party to the transaction, corrects the title, and clarifies what was conveyed. Accordingly, the correct title should read, ``Carolina Coastal Railway, Inc.Acquisition and Operation ExemptionMorehead & South Fork Railroad Co.''
Mercedes-Benz, U.S.A. LLC; Denial of Application for Renewal of Temporary Exemption From Federal Motor Vehicle Safety Standard No. 108
This document responds to an application from Mercedes-Benz, U.S.A. LLC (``MBUSA''), on behalf of itself and its parent corporation Daimler AG (``Daimler''), dated December 3, 2007, for the renewal of a temporary exemption from S5.5.10 of Federal Motor Vehicle Safety Standard (FMVSS) No. 108; Lamps, reflective devices, and associated equipment. The National Highway Traffic Safety Administration (NHTSA) granted MBUSA's original petition for a temporary exemption on January 30, 2006. Based on the agency's evaluation, NHTSA is denying the application from MBUSA for the renewal of the temporary exemption.
Medical Certification Requirements as Part of the Commercial Driver's License (CDL); Technical, Organizational, and Conforming Amendments
The FMCSA amends its regulations implementing section 215 of the Motor Carrier Safety Improvement Act of 1999 (MCSIA). The purpose of this rule is both to make amendments responding to petitions for reconsideration and to make technical corrections to a FMCSA regulation.
Qualification of Drivers; Exemption Applications; Diabetes Mellitus
FMCSA announces its decision to exempt twenty-seven individuals from its rule prohibiting persons with insulin-treated diabetes mellitus (ITDM) from operating commercial motor vehicles (CMVs) in interstate commerce. The exemptions will enable these individuals to operate CMVs in interstate commerce.
Qualification of Drivers; Exemption Applications; Vision
FMCSA announces its decision to exempt 19 individuals from the vision requirement in the Federal Motor Carrier Safety Regulations (FMCSRs). The exemptions will enable these individuals to operate commercial motor vehicles (CMVs) in interstate commerce without meeting the prescribed vision standard. The Agency has concluded that granting these exemptions will provide a level of safety that is equivalent to, or greater than, the level of safety maintained without the exemptions for these CMV drivers.
Qualification of Drivers; Exemption Applications; Diabetes Mellitus
FMCSA announces receipt of applications from 37 individuals for exemptions from the prohibition against persons with insulin- treated diabetes mellitus (ITDM) operating commercial motor vehicles (CMVs) in interstate commerce. If granted, the exemptions would enable these individuals with ITDM to operate CMVs in interstate commerce.
Notice of Request for Extension of a Currently Approved Information Collection
In accordance with the Paperwork Reduction Act of 1995, this notice announces the intention of the Federal Transit Administration (FTA) to request the Office of Management and Budget (OMB) to approve the revision of the currently approved information collection:
Airworthiness Directives; Dowty Propellers R175/4-30-4/13; R175/4-30-4/13e; R184/4-30-4/50; R193/4-30-4/50; R193/4-30-4/61; R193/4-30-4/64; R193/4-30-4/65; R193/4-30-4/66; R.209/4-40-4.5/2; R212/4-30-4/22; R.245/4-40-4.5/13; R257/4-30-4/60; and R.259/4-40-4.5/17 Model Propellers
The FAA is superseding an existing airworthiness directive (AD) for the Dowty Propellers, propeller models listed above. That AD currently requires, for all Dowty Rotol propellers, visual inspections for seizure and for cadmium plating of the blade pitch change operating links and eyebolt fork assemblies. That AD also requires replacement or heat-treatment of the blade pitch change operating links and eyebolt fork assemblies, if necessary. This AD requires the same actions, but only for certain propeller models. This AD results from the FAA determining that AD 70-16-02 does not apply to all propellers, since current Dowty propellers are differently designed. We are issuing this AD supersedure to specify the affected propeller models, and to prevent seizure or embrittlement and cracking of the blade pitch change operating links and eyebolt fork assemblies, which could result in reduced controllability of the airplane.
Airworthiness Directives; Gulfstream Aerospace LP (Type Certificate Previously Held by Israel Aircraft Industries, Ltd.) Model Gulfstream 100 Airplanes, and Model Astra SPX and 1125 Westwind Astra Airplanes
We are superseding an existing airworthiness directive (AD) for the products listed above. This AD results from mandatory continuing airworthiness information (MCAI) originated by an aviation authority of another country to identify and correct an unsafe condition on an aviation product. The MCAI describes the unsafe condition as: * * * * *
Airworthiness Directives; Airbus Model A300 Series Airplanes; Model A300 B4-600, B4-600R, F4-600R Series Airplanes, and Model A300 C4-605R Variant F Airplanes (Collectively Called A300-600 Series Airplanes); and A310 Series Airplanes
We are adopting a new airworthiness directive (AD) for the products listed above. This AD results from mandatory continuing airworthiness information (MCAI) originated by an aviation authority of another country to identify and correct an unsafe condition on an aviation product. The MCAI describes the unsafe condition as:
Airworthiness Directives; Bombardier, Inc. Model CL-600-1A11 (CL-600), CL-600-2A12 (CL-601), and CL-600-2B16 (CL-601-3A, CL-601-3R, and CL-604 Variants) Airplanes
We are superseding an existing airworthiness directive (AD) for the products listed above. This AD results from mandatory continuing airworthiness information (MCAI) originated by an aviation authority of another country to identify and correct an unsafe condition on an aviation product. The MCAI describes the unsafe condition as:
Airworthiness Directives; Airbus Model A330-200 and -300 Series Airplanes, and Model A340-300 Series Airplanes
We are adopting a new airworthiness directive (AD) for the products listed above. This AD results from mandatory continuing airworthiness information (MCAI) originated by an aviation authority of another country to identify and correct an unsafe condition on an aviation product. The MCAI describes the unsafe condition as:
Airworthiness Directives; Eurocopter France (ECF) Model AS332L1 and AS332L2 Helicopters
We are adopting a new airworthiness directive (AD) for the specified ECF model helicopters. This AD results from a mandatory continuing airworthiness information (MCAI) AD issued by the European Aviation Safety Agency (EASA), which is the Technical Agent for the Member States of the European Community. The MCAI AD states that with certain pilot and copilot seats in the rear high position and seat backrest fully tilted the seat shoulder harness could become jammed between the seat and bulkhead. This condition, if not corrected, could result in the shoulder harness binding and causing the inertial reel to malfunction and no longer retain the flight crew member in the seat in the event of an emergency or hard landing.
Airworthiness Directives; Eurocopter France Model AS332L2 Helicopters
We are adopting a new airworthiness directive (AD) for Eurocopter France (Eurocopter) Model AS332L2 helicopters. This AD results from a mandatory continuing airworthiness information (MCAI) AD issued by the European Aviation Safety Agency (EASA), which is the Technical Agent for the Member States of the European Community. The MCAI AD states that the AD was issued after the discovery of broken swashplate bearing attaching screw heads. Failure of these screw heads could lead to the loss of the coupling between the non-rotating and the rotating swashplate. This AD is intended to prevent loss of power to the rotating swashplate and subsequent loss of control of the helicopter.
Airworthiness Directives; Dassault-Aviation Model FALCON 2000 and FALCON 2000EX Airplanes
We are adopting a new airworthiness directive (AD) for the products listed above. This AD results from mandatory continuing airworthiness information (MCAI) originated by an aviation authority of another country to identify and correct an unsafe condition on an aviation product. The MCAI describes the unsafe condition as:
Airworthiness Directives; BAE SYSTEMS (Operations) Limited Model BAe 146 Airplanes and Model Avro 146-RJ Airplanes
The FAA is superseding an existing airworthiness directive (AD), which applies to Model BAe 146 airplanes and Model Avro 146-RJ airplanes. That AD currently requires revising the Airworthiness Limitations Section (ALS) of the Instructions for Continued Airworthiness to incorporate life limits for certain items and inspections to detect fatigue cracking in certain structures. This new AD requires incorporating new and more restrictive life limits for certain items and for certain inspections to detect fatigue cracking in certain structures. This AD also requires revising the airworthiness limitations to include critical design configuration control limitations for the fuel system. This AD results from issuance of a later revision to the airworthiness limitations. We are issuing this AD to ensure that fatigue cracking of certain structural elements is detected and corrected, and to prevent ignition sources in the fuel tanks; fatigue cracking of certain structural elements could adversely affect the structural integrity of these airplanes.
Notice of Buy America Waiver Request by Oregon Department of Transportation for Steel Roof Tiles To Be Used in Union Station Roof Rehabilitation
The FRA is issuing this notice to advise the public that the Oregon Department of Transportation (``ODOT'') has requested a waiver from the Buy America requirements of the Passenger Rail Investment and Improvement Act of 2008 (``PRIIA'') (49 U.S.C. 24405(a)) for the purchase of metal roof tiles made of 40/45 KSI 2, 24 Gauge (0.0276'') Galvanized ``Non-Fluting'' Steel Stock with Kynar PPG 5LR82411 or L/G Rodda Red II Paint finish color. ODOT is seeking a waiver in order to complete the rehabilitation of the historic Union Station roof in Portland, Oregon as one component of a project funded by FRA under the American Recovery and Reinvestment Act of 2009 (``Recovery Act''). The purpose of this notice is to seek public comment on whether the FRA should grant a waiver to its Buy America requirements in 49 U.S.C. 24405(a).
Eighty-Second Meeting: RTCA Special Committee 159: Global Positioning System (GPS)
The FAA is issuing this notice to advise the public of a meeting of RTCA Special Committee 159: Global Positioning System (GPS).
Thirteenth Meeting: EUROCAE WG-72: RTCA Special Committee 216: Aeronautical Systems Security (Joint Meeting)
The FAA is issuing this notice to advise the public of a meeting of EUROCAE WG-72: RTCA Special Committee 216: Aeronautical Systems Security (Joint Meeting).
Notice of Final Federal Agency Actions on Proposed Highways in Michigan
This notice announces the availability of a Record of Decision by FHWA pursuant to the requirements of the National Environmental Protection Policy Act of 1969 (NEPA), 42 U.S.C. 4321, as amended and the Council on Environmental Quality Regulations (40 CFR Parts 1500- 1508). In addition, this Notice announces actions taken by FHWA and other Federal agencies that are final within the meaning of 23 U.S.C. 139(1)(1). These actions relate to proposed improvements to US-31, M- 104, and construction of a new M-231 route in Ottawa County, Michigan. These actions grant approvals for the project.
Administrative Waivers of the Coastwise Trade Laws: New Definition for Eligible Vessel
The Maritime Administration (MARAD) is changing the definition of ``eligible vessel'' to be considered for a waiver of the coastwise laws to operate as small passenger vessels or uninspected passenger vessels authorized to carry no more than 12 passengers for hire. The new definition of ``eligible vessel'' deletes the requirement that the eligible vessel be five net tons or more. That requirement is not in the enabling statute and is preventing MARAD from considering waiver
Airworthiness Directives; General Electric Company CF34-1A, -3A, -3A1, -3A2, -3B, and -3B1 Turbofan Engines; Correction
The FAA is correcting airworthiness directive (AD) 2009-26-09, which published in the Federal Register. That AD applies to General Electric Company (GE) CF34-1A, -3A, -3A1, -3A2, -3B, and -3B1 turbofan engines. The GE alert service bulletin (ASB) numbers CF34-AL S/B 72 A0212, CF34-AL S/B 72 A0234, and CF34-AL S/B 72 A0235 in the regulatory section are incorrect. This document corrects those ASB numbers. In all other respects, the original document remains the same.
Airworthiness Directives; Pratt & Whitney JT8D-9, -9A, -11, -15, -17, and -17R Turbofan Engines
The FAA proposes to adopt a new airworthiness directive (AD) for Pratt & Whitney (PW) JT8D-9, -9A, -11, -15, -17, and -17R turbofan engines. This proposed AD would require overhauling fan blade leading edges at the first shop visit after 4,000 cycles-in-service (CIS) since the last total fan blade overhaul was performed. This proposed AD results from reports of failed fan blades. We are proposing this AD to prevent high-cycle fatigue cracking at the blade root, which could result in uncontained failures of first stage fan blades and damage to the airplane.
Airworthiness Directives; Rolls-Royce plc (RR) RB211-22B and RB211-524 Series Turbofan Engines
We propose to adopt a new airworthiness directive (AD) for the products listed above. This proposed AD results from mandatory continuing airworthiness information (MCAI) issued by an aviation authority of another country to identify and correct an unsafe condition on an aviation product. The MCAI describes the unsafe condition as: Several low pressure turbine (LPT) shafts have been found with cracks originating from the rear cooling air holes. The cracks were found at normal component overhaul, by the standard Magnetic Particle Inspection (MPI) technique defined in the associated engine manual. The cracks have been found to initiate from corrosion pits. Propagation of a crack from the rear cooling air holes may result in shaft failure and subsequently in an uncontained Low Pressure Turbine failure. For the reasons stated above, this AD requires the inspection of the affected engines' LPT shafts and replacement of the shaft, as necessary. We are proposing this AD to detect cracks, initiated by corrosion pits, originating from the rear cooling air holes, which could result in shaft failure and subsequently in an uncontained failure of the LPT and damage to the airplane.
Airworthiness Directives; Rolls-Royce plc RB211-524C2 Series Turbofan Engines
We propose to adopt a new airworthiness directive (AD) for the products listed above. This proposed AD results from mandatory continuing airworthiness information (MCAI) issued by an aviation authority of another country to identify and correct an unsafe condition on an aviation product. The MCAI describes the unsafe condition as: A number of LPT casings have been found cracked during engine shop visit. Cracking of the LPT casing reduces the capability of the casing to contain debris in the event of an LPT stage 1 blade failure. Therefore, blade failure in an engine featuring a cracked LPT casing may result in release of uncontained high energy debris. For the reason described above, this AD requires repetitive inspections and corrective actions, depending on findings. We are proposing this AD to detect cracks in the LPT casings, which could result in the release of uncontained high-energy debris in the event of a stage 1 blade failure. Uncontained high-energy debris could result in damage to the airplane.
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