Department of Transportation October 2008 – Federal Register Recent Federal Regulation Documents
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Pipeline Safety: Meetings of the Technical Pipeline Safety Standards Committee and Technical Hazardous Liquid Pipeline Safety Standards Committee
This notice announces public meetings of the Technical Pipeline Safety Standards Committee (TPSSC) and of the Technical Hazardous Liquid Pipeline Safety Standards Committee (THLPSSC). The committees will meet to discuss two important regulatory proposals and several future regulatory initiatives.
Parts and Accessories Necessary for Safe Operation; Application for an Exemption From DriveCam, Inc
The Federal Motor Carrier Safety Administration (FMCSA) requests public comment on an application for an exemption from DriveCam, Inc. (DriveCam) to allow the placement of video event recorders at the top of the windshields on commercial motor vehicles (CMVs). The exemption would enable any motor carrier using DriveCam devices to mount the recorders lower in the windshield that is lower than what is currently permitted by the Agency's regulations in order to obtain the most effective view of the driver, passengers or outside area to maximize the ability to improve driver behavior and understand the root causes of collisions. Motor carriers would use the video event recorders to increase safety through (1) identification and remediation of risky driving behaviors such as distracted driving and drowsiness; (2) enhanced monitoring of passenger behavior; and (3) enhanced collision review and analysis. DriveCam believes this mounting position would maintain a level of safety that is equivalent to, or greater than, the level of safety achieved without the exemption.
Qualification of Drivers; Exemption Renewals; Vision
FMCSA previously announced its decision to renew the exemptions from the vision requirement in the Federal Motor Carrier Safety Regulations for 13 individuals. FMCSA has statutory authority to exempt individuals from the vision requirement if the exemptions granted will not compromise safety. The Agency has reviewed the comments submitted in response to the previous announcement and concluded that granting these exemptions will provide a level of safety that will be equivalent to, or greater than, the level of safety maintained without the exemptions for these commercial motor vehicle (CMV) drivers.
Notice of Intent To Request Revision From the Office of Management and Budget of a Currently Approved Information Collection Activity, Request for Comments; Pilots Convicted of Alcohol or Drug-Related Motor Vehicle Offenses or Subject to State Motor Vehicle Administrative Procedures
The FAA invites public comments about our intention to request the Office of Management and Budget (OMB) to approve a current information collection. Certain organizations may apply to perform certification functions on behalf of the FAA. The requested information is needed to mitigate potential hazards presented by airmen using alcohol or drugs in flight, to identify persons possibly unsuitable for pilot certification. DATES: Please submit comments by December 30, 2008.
Notice of Intent To Request Revision From the Office of Management and Budget of a Currently Approved Information Collection Activity, Request for Comments; ACSEP Evaluation Customer Feedback Report
The FAA invites public comments about our intention to request the Office of Management and Budget (OMB) to approve a current information collection. Certain organizations may apply to perform certification functions on behalf of the FAA. The information is collected from holders of FAA production approvals and selected suppliers to obtain their input on how well the agency is performing the administration and conduct of the Aircraft Certification Systems Evaluation Program (ACSEP).
Congestion Management Rule for LaGuardia Airport
On October 10, 2008, the FAA issued a final rule to address congestion at New York's LaGuardia Airport (LaGuardia). That final rule is scheduled to take effect December 9, 2008. As part of the final rule, the FAA explained how it would initially allocate slots to incumbent carriers on the rule's effective date. The preamble to the final rule noted that it would not allocate slots to a carrier that was no longer operating at the airport. However, it did not address how those slots would be allocated under the rule. Today's notice provides that explanation.
Public Notice for Waiver of Aeronautical Land-Use Assurance Mansfield Lahm International Airport, Mansfield, OH
The Federal Aviation Administration (FAA) is considering a proposal to change a portion of the airport from aeronautical use to non-aeronautical use and to authorize the sale of the airport property. The proposal consists of the sale of vacant, much of which is farmed or vacant land, containing trees, streams, and scattered wetland areas owned by the City of Mansfield. The Miller Farm Parcel 50 is approximately 100.521 acres. The land was acquired under FAA Project No(s) AIP-90-2-3-39-0049 0991 (Contract No. AIP FA91-GL-l806). There are no impacts to the airport by allowing the airport to dispose of the property. The proposed land for release is vacant, not required for future development, safety, or compatible land use. The intended land use is infrastructure development, including roads, utilities, and industrial development. Approval does not constitute a commitment by the FAA to financially assist in the disposal of the subject airport property nor a determination of eligibility for grant-in-aid funding from the FAA. The disposition of proceeds from the disposal of the airport property will be in accordance with FAA's Policy and Procedures Concerning the Use of Airport Revenue, published in the Federal Register on February 16, 1999. In accordance with section 47107(h) of title 49, United States Code, this notice is required to be published in the Federal Register 30 days before modifying the land-use assurance that requires the property to be used for an aeronautical purpose.
Federal Fiscal Year 2009 Annual List of Certifications and Assurances for Federal Transit Administration Grants and Cooperative Agreements
Pursuant to 49 U.S.C. 5323(n), FTA is authorized to consolidate the certifications and assurances required by Federal law or regulations for its programs into a single document. FTA is also required by 49 U.S.C. 5323(n) to publish a list of those certifications and assurances annually. Appendix A of this Notice contains the comprehensive compilation of FTA's Certifications and Assurances for Federal Fiscal Year (Federal FY) 2009 applicable to the various Federal assistance programs that FTA will administer during that Federal FY. FTA's Certifications and Assurances for Federal FY 2009 reflect Federal statutory, regulatory, and programmatic changes that have now become effective.
Notification of Policy Revisions and Requests for Comments on the Percentage of Fabrication and Assembly that Must be Completed by an Amateur Builder To Obtain an Experimental Airworthiness Certificate for an Amateur-Built Aircraft; Extension of Comment Period
This notice announces a second extension of the comment period for the proposed revisions to Chapter 4, Special Airworthiness Certification, Section 9 of the FAA Order 8130.2F, Airworthiness Certification of Aircraft and Related Products, and Advisory Circular (AC) 20-27G, Certification and Operation of Amateur-Built Aircraft. These and other related documents are located on the FAA main Web page. The Web link is: https://www.faa.gov/aircraft/draft_docs/display_docs/ index.cfm?DocType=Pubs.
Airworthiness Directives; Hawker Beechcraft Corporation Model MU-300-10 Airplanes and Model 400 and 400A Series Airplanes; and Raytheon (Mitsubishi) Model MU-300 Airplanes
The FAA proposes to supersede an existing airworthiness directive (AD) that applies to certain BEECH Model 400, 400A, and MU- 300-10 airplanes. The existing AD currently requires installation of an improved adjustment mechanism on the flightcrew seats and replacement of the existing aluminum seat reinforcement assemblies with steel assemblies. This proposed AD would add airplanes to the applicability of the existing AD. This proposed AD results from reports of incomplete latching of the existing adjustment mechanism and cracked reinforcement assemblies, which could result in sudden shifting of a flightcrew seat. We are proposing this AD to prevent sudden shifting of a flightcrew seat, which could impair the flightcrew's ability to control the airplane.
Airworthiness Directives; BAE Systems (Operations) Limited Model BAe 146 and Avro 146-RJ Airplanes
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:
Airworthiness Directives; McDonnell Douglas Model 717-200 Airplanes
We propose to adopt a new airworthiness directive (AD) for certain McDonnell Douglas Model 717-200 airplanes. This proposed AD would require modifying the wire installation of the auxiliary hydraulic pump in the right wheel well of the main landing gear (MLG). This proposed AD results from fuel system reviews conducted by the manufacturer. We are proposing this AD to prevent a tire burst when the MLG is in the retracted position from causing damage to the wire assembly of the auxiliary hydraulic pump and subsequent electrical arcing, creating the potential of an ignition source in the center wing tank, which, in combination with flammable fuel vapors, could result in a fuel tank explosion and consequent loss of the airplane.
Airworthiness Directives; Boeing Model 737-600, -700, -700C, -800, and -900 Series Airplanes
The FAA proposes to supersede an existing airworthiness directive (AD) that applies to certain Boeing Model 737-600, -700, - 700C, -800, and -900 series airplanes. The existing AD currently requires replacing brackets that hold the P5 panel to the airplane structure, the standby compass bracket assembly, the generator drive and standby power module, and the air conditioning module. The existing AD also currently requires, among other actions, inspecting for wire length and for damage of the connectors and the wire bundles, and doing applicable corrective actions if necessary. This proposed AD would require an additional operational test of the P5-14 panel. This proposed AD results from a report of an electrical burning smell in the flight compartment. We are proposing this AD to prevent wire bundles from contacting the overhead dripshield panel and modules in the P5 overhead panel, which could result in electrical arcing and shorting of the electrical connector and consequent loss of several critical systems essential for safe flight; and to ensure proper operation of the passenger oxygen system. If an improperly functioning passenger oxygen system goes undetected, the passenger oxygen mask could fail to deploy and result in possible incapacitation of passengers during a depressurization event.
Notice of Request for Extension of a Previously Approved Collection
In compliance with the Paperwork Reduction Act of 1995, Public Law 104-13, this notice announces the Department of Transportation's (DOT) intention to request extension of a previously approved information collection.
America's Marine Highway Program, Corrections
The Maritime Administration is correcting an interim final rule that appeared in the Federal Register of October 9, 2008 (73 FR 59530). Due to the current financial environment and the receipt of informal comments indicating that one hundred and twenty (120) days is insufficient time to formulate an application, this document changes the summary section of the regulation to reflect that the Maritime Administration is seeking comment on the America's Marine Highway program and recommendations for Marine Highway Corridors and not soliciting applications for specific projects at this time.
Notice of Intent To Request Revision From the Office of Management and Budget of a Currently Approved Information Collection Activity, Request for Comments; Procedures for Non-Federal Navigation Facilities
The FAA invites public comments about our intention to request the Office of Management and Budget (OMB) to approve a current information collection. The information kept is used by the FAA as proof that non-Federal navigation facilities are maintained within certain specified tolerances.
Notice of Intent To Request Revision From the Office of Management and Budget of a Currently Approved Information Collection Activity, Request for Comments; Operating Requirements: Domestic, Flag, and Supplemental Operations
The FAA invites public comments about our intention to request the Office of Management and Budget (OMB) to approve a current information collection. The information collected is used to determine air operators' compliance with the minimum safety standards set out in the regulation and the applicant's eligibility for air operations certification.
Notice of Intent To Request Revision From the Office of Management and Budget of a Currently Approved Information Collection Activity, Request for Comments; Aviation Medical Examiner Program
The FAA invites public comments about our intention to request the Office of Management and Budget (OMB) to approve a current information collection. This collection is necessary in order to determine applicants' qualifications for certification as an Aviation Medical Examiner (AME).
Notice of Intent To Request Revision From the Office of Management and Budget of a Currently Approved Information Collection Activity, Request for Comments; Exemptions for Air Taxi and Commuter Air Carrier Operations
The FAA invites public comments about our intention to request the Office of Management and Budget (OMB) to approve a current information collection. 14 CFR Part 298 requires air carrier operators to obtain a certificate of public convenience and necessity from the DOT, with the exception of air taxi and commuter air operators.
Agency Information Collection Activity Seeking OMB Approval
The FAA invites public comments about our intention to request the Office of Management and Budget's (OMB) revision of a current information collection. The Federal Register Notice with a 60-day comment period soliciting comments on the following collection of information was published on June 19, 2008, vol. 73, no. 119, page 34975. This information is used by FAA for safety assessment, planning, forecasting, cost/benefit analysis, and to target areas for research.
Notice of Intent To Request Revision From the Office of Management and Budget of a Currently Approved Information Collection Activity, Request for Comments; Final Rule Certification of Repair Stations, Part 145 of Title 14, CFR
The FAA invites public comments about our intention to request the Office of Management and Budget (OMB) to approve a current information collection. Certain organizations may apply to perform certification functions on behalf of the FAA. Information is collected from applicants who wish to obtain repair station certification.
Agency Information Collection Activity Seeking OMB Approval
The FAA invites public comments about our intention to request the Office of Management and Budget's (OMB) revision of a current information collection. The Federal Register Notice with a 60-day comment period soliciting comments on the following collection of information was published on June 19, 2008, vol. 73, no. 119, page 34976. The information is required to carry out FAA missions related to the aviation industry, flight planning, and airport engineering.
Modification to the Norton Sound Low, Woody Island Low, Control 1234L and Control 1487L Offshore Airspace Areas; AK
This action amends the following four Offshore Airspace Areas in Alaska: Norton Sound Low, Woody Island Low, Control 1234L and Control 1487L. This action lowers the airspace floors to provide additional controlled airspace for aircraft instrument flight rule (IFR) operations at Alaska airports.
Noise Exposure Map Notice; Providence-T.F. Green Airport, Warwick, RI
The Federal Aviation Administration (FAA) announces its determination that the noise exposure map for Providence-T.F. Green Airport, as submitted by the Rhode Island Airport Corporation (RIAC) under the provisions of Title I of the Aviation Safety and Noise Abatement Act of 1979 (Pub. L. 96-193) and 14 CFR Part 150, are in compliance with applicable requirements.
National Technical Assistance Center for Parks and Public Lands
This solicitation is for proposals from organizations to implement a National Technical Assistance Center for Alternative Transportation in Public Lands. The Center is to assist the Federal Transit Administration (FTA) in the coordinated provision of technical assistance under the Paul S. Sarbanes Transit in Parks program. The Center is to develop, administer, distribute, and oversee multiple technical assistance products to support land management agencies, States, and local and tribal governments in alternative transportation projects serving federally managed parks and public lands. Organizations that submit proposals should have technical assistance expertise and experience in transportation planning, coordination and operations on parks and public lands. FTA will award a cooperative agreement (one base year plus two option years) for an estimated amount of $4,500,000. The funding is authorized under section 3021(d)(1) of the Safe, Accountable, Flexible, Efficient Transportation Equity Act: A Legacy for Users (SAFETEA-LU) and subsequently appropriated. For the first year of the project, $1,500,000 will be made available. Funding for subsequent years will be based on available annual appropriations as well as annual performance reviews. Use of Funds: The organization selected shall (1) provide on-demand and proactive technical assistance in alternative transportation project-level scoping, planning, and operations; (2) provide training and workshops; (3) perform outreach, communications, and coordination of services to support land management agencies in planning processes; (4) maintain a central repository of resources and disseminate resources; (5) support the project evaluation process; (6) convene and collaborate with an interagency peer review group; and (7) perform project administration and management.
Airworthiness Directives; Cessna Aircraft Company (Type Certificate Previously Held by Columbia Aircraft Manufacturing) Models LC40-550FG, LC41-550FG, and LC42-550FG Airplanes
We are adopting a new airworthiness directive (AD) to revise AD 2007-07-06, which applies to certain Cessna Aircraft Company (type certificate previously held by Columbia Aircraft Manufacturing) (Cessna) Models LC40-550FG, LC41-550FG, and LC42-550FG airplanes. AD 2007-07-06 currently requires the following: Adding information to the limitations section of the airplane flight manual (AFM); repetitively inspecting the aileron and the elevator linear bearings and control rods for foreign object debris, scarring, or damage; and taking all necessary corrective actions. Since we issued AD 2007-07-06, Cessna has issued a new service bulletin that contains procedures for installing an access panel to facilitate the required inspections. Consequently, this AD retains the actions currently required in AD 2007-07-06; allows installing access panels; and changes the serial number applicability. We are issuing this AD to prevent jamming in the aileron and elevator control systems, which could result in failure. This failure could lead to loss of control.
Airworthiness Directives; Saab AB, Saab Aerosystems Model SAAB 2000 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 Model CL-600-2C10 (Regional Jet Series 700, 701, & 702), CL-600-2D15 (Regional Jet Series 705), and CL-600-2D24 (Regional Jet Series 900) 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; Eurocopter France Model AS332 C, L, L1 and L2 Helicopters
We are adopting a new airworthiness directive (AD) for the specified Eurocopter France (ECF) model helicopters. This AD results from mandatory continuing airworthiness information (MCAI) originated by the aviation authority of France to identify and correct an unsafe condition on an aviation product. The aviation authority of France, with which we have a bilateral agreement, states in the MCAI: ``This Airworthiness Directive (AD) is issued following two cases of LH hydraulic power system loss on two AS332 helicopters. In both cases, the pilot received the ``low level'' hydraulic failure alarm. The investigations conducted on the two helicopters revealed a hydraulic fluid leak from the hydraulic pump casing. In both cases, incorrect position of the liner of the compensating piston had caused the seals to deteriorate. This incorrect positioning of the liner is due to non- compliant application of the repair process by a repair station. Deterioration of hydraulic pumps causes: The loss of the RH and LH hydraulic power systems in the event of a substantial hydraulic fluid leak from both hydraulic pumps during a given flight. The loss of the hydraulic system concerned, in the event of a substantial hydraulic fluid leak from only one pump.'' This AD requires actions that are intended to address this unsafe condition.
Proposed Establishment of Colored Federal Airway; Alaska
This action proposes to establish Colored Federal Airway Blue 7 (B-7), in Alaska. This action would add to the Instrument Flight Rules (IFR) airway and route structure in Alaska by providing IFR connectivity between Bethel, AK and Cape Newenham, AK. The FAA is proposing this action to enhance safety and improve the management of air traffic operations in the State of Alaska.
RTCA Government/Industry Air Traffic Management Advisory Committee
The FAA is issuing this notice to advise the public of a meeting of RTCA Government/Industry Air Traffic Management Advisory Committee.
Notice and Request for Comments
As part of its continuing effort to reduce paperwork burdens, and as required by the Paperwork Reduction Act of 1995, 44 U.S.C. 3501 et seq. (PRA), the Surface Transportation Board (STB or Board) gives notice that it has submitted a request to the Office of Management and Budget (OMB) for an extension of approval without change of a currently approved collection: Application to Open a Billing Account. The Board previously published a notice about these collections in the Federal Register on June 16, 2008, at 73 FR 34068. That notice allowed for a 60-day public review and comment period. No comments were received. This information collection is described in detail below. Comments are requested concerning (1) The accuracy of the Board's burden estimates; (2) ways to enhance the quality, utility, and clarity of the information collected; (3) ways to minimize the burden of the collection of information on the respondents, including the use of automated collection techniques or other forms of information technology, when appropriate; and (4) whether this collection of information is necessary for the proper performance of the functions of the Board, including whether the collection has practical utility.
Reservation System for Unscheduled Arrivals at Chicago's O'Hare International Airport
This action extends the expiration date of Special Federal Aviation Regulation (SFAR) No. 105 through October 31, 2010. This action maintains the reservation system established for unscheduled arrivals at Chicago O'Hare International Airport (O'Hare) following the expiration of limitations imposed on scheduled operations at the airport. This action is necessary to reduce congestion and delays at the airport and is consistent with O'Hare's status as a Schedules Facilitated Airport (Level 2) under the International Air Transport Association (IATA) Worldwide Scheduling Guidelines (WSG).
Airworthiness Directives; Boeing Model 737-600, -700, -700C, -800, and -900 Series Airplanes
The FAA proposes to supersede an existing airworthiness directive (AD) that applies to all Boeing Model 737-600, -700, -700C, - 800, and -900 series airplanes. The existing AD currently requires reviewing the airplane maintenance records to determine whether an engine has been removed from the airplane since the airplane was manufactured. For airplanes on which an engine has been removed, the existing AD also requires an inspection of the aft engine mount to determine if the center link assembly is correctly installed, and follow-on actions if necessary. This proposed AD would require the same actions for airplanes on which the engine has not been previously removed. This proposed AD results from reports indicating that operators found that the center link assembly for the aft engine mount was reversed on several airplanes that had not had an engine removed since delivery. We are proposing this AD to prevent increased structural loads on the aft engine mount, which could result in failure of the aft engine mount and consequent separation of the engine from the airplane.
Airworthiness Directives; Fokker F.28 Mark 0070 and 0100 Airplanes
We propose to adopt a new airworthiness directive (AD) for the products listed above that would supersede an existing AD. 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:
Environmental Impact Statement, San Bernardino, CA
The FHWA is providing this notice to advise the public that the California Department of Transportation (Caltrans) is withdrawing the Notice of Intent (NOI) published in the Federal Register (Vol. 71, No. 128) on Wednesday, July 5, 2006. That notice addressed the intent to prepare an Environmental Impact Statement (EIS) for the proposed U.S. 395 Realignment Freeway/Expressway project on U.S. 395 from Interstate 15 (I-15/U.S. 395 interchange) to Farmington Road. The original NOI was published by FHWA. Pursuant to 23 U.S.C. 327, environmental responsibilities for this project have been assigned to Caltrans.
Airworthiness Directives; Turbomeca Arriel 2B and 2B1 Turboshaft 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:
Operating Limitations for Unscheduled Operations at John F. Kennedy International Airport and Newark Liberty International Airport
On July 17, 2008, the FAA issued a proposed order requesting written views on the FAA's tentative determination to temporarily limit unscheduled aircraft operations at John F. Kennedy International Airport (JFK) and Newark Liberty International Airport (EWR). The temporary limit was intended to supplement previously issued FAA orders limiting scheduled operations at both airports by addressing congestion related delays that would otherwise occur pending the ongoing rulemaking action for JFK and EWR. This disposition of comments explains the FAA's rationale for not presently adopting the proposed order and discusses the comments received in response to the proposed order.
Information Collection Activities
PHMSA is extending the period for public comment to its Federal Register Notice issued on September 4, 2008 (73 FR 51697) that proposes to revise forms PHMSA F 7100.2Incident Report for Gas Transmission and Gathering Systems; PHMSA F 7100.1Incident Report for Gas Distribution Systems; and PHMSA F 7000-1Accident Report for Hazardous Liquid Pipeline Systems.
Airworthiness Directives; Boeing Model 727 Airplanes
We propose to adopt a new airworthiness directive (AD) for all Boeing Model 727 airplanes. This proposed AD would require inspections for cracking of the left- and right-side shear ties and web posts of the kickload beam and the adjacent structure in the vertical stabilizer, and corrective actions if necessary. This proposed AD results from a report of cracking of the left- and right-side web posts and shear ties of the kickload beam. We are proposing this AD to detect and correct cracking of the left- and right-side web posts and shear ties of the kickload beam, which, when coupled with failures in the adjacent structure, could result in structural failure of the vertical stabilizer, and loss of control of the airplane.
Applications of Prescott Support Company, Inc., for Certificate Authority
The Department of Transportation is directing all interested persons to show cause why it should not issue orders finding Prescott Support Company, Inc., fit, willing, and able, and awarding it certificates of public convenience and necessity to engage in interstate and foreign charter air transportation of property and mail.
Office of Hazardous Materials Safety; Notice of Delays in Processing of Special Permits Applications
In accordance with the requirements of 49 U.S.C. 5117(c), PHMSA is publishing the following list of special permit applications that have been in process for 180 days or more. The reason(s) for delay and the expected completion date for action on each application is provided in association with each identified application.
Executive Committee of the Aviation Rulemaking Advisory Committee; Meeting
The FAA is issuing this notice to advise the public of a meeting of the Executive Committee of the Aviation Rulemaking Advisory Committee.
Airworthiness Directives; Aircraft Industries a.s. (Type Certificate G60EU Previously Held by LETECKÉ ZÁVODY a.s. and LET Aeronautical Works) Model L 23 Super Blanik Sailplane
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:
Airworthiness Directives; Bombardier Model CL-600-2C10 (Regional Jet Series 700 & 701) Series Airplanes and Model CL-600-2D24 (Regional Jet Series 900) Series Airplanes
The FAA is revising an existing airworthiness directive (AD) that applies to certain Bombardier Model CL-600-2C10 (Regional Jet series 700 & 701) series airplanes and Model CL-600-2D24 (Regional Jet series 900) series airplanes. That AD currently requires revising the Airworthiness Limitations section of the Instructions of Continued Airworthiness by incorporating new repetitive inspections and an optional terminating action for the repetitive inspections, and repairing any crack. This new AD clarifies the applicability of the existing AD. This AD results from reports of hydraulic pressure loss in either the number 1 or number 2 hydraulic system due to breakage or leakage of hydraulic lines in the aft equipment bay and reports of cracks on the aft pressure bulkhead web around the feed-through holes. We are issuing this AD to prevent loss of hydraulic pressure, which could result in reduced controllability of the airplane, and to detect and correct cracks on the aft pressure bulkhead web, which could result in reduced structural integrity of the aft pressure bulkhead.
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