Federal Aviation Administration September 2012 – Federal Register Recent Federal Regulation Documents
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Proposed Amendment of Class E Airspace; Goldsboro, NC
This action proposes to amend Class E Airspace in the Goldsboro, NC area, to accommodate new Area Navigation (RNAV) Global Positioning System (GPS) Standard Instrument Approach Procedures at Mount Olive Municipal Airport. Airspace reconfiguration is necessary for the continued safety and management of instrument flight rules (IFR) operations within the Goldsboro, NC, airspace area. This action also would update the geographic coordinates of Mount Olive Municipal Airport and the Seymour Johnson TACAN.
Proposed Amendment of Class D and E Airspace; Tri-Cities, TN; Revocation of Class E Airspace; Tri-City, TN
This supplemental notice of proposed rulemaking would rename the city designator listed under the title in the preamble and regulatory text for Tri-Cities Regional Airport, and establish Class E airspace extending upward from 700 feet above the surface at Hawkins County Airport, Rogersville, TN, and Virginia Highlands Airport, Abington, VA. The Tri-Cities Class D airspace description would be amended to better describe the controlled airspace area. In an NPRM published in the Federal Register on April 10, 2012, the FAA proposed to amend existing controlled airspace extending upward from 700 feet above the surface at Tri-Cities Airport, Blountville, TN, that included the airports mentioned above. The FAA has reassessed the proposal and finds that separation of existing Class E airspace surrounding Virginia Highlands Airport, Abingdon, VA, and Hawkins County Airport, Rogersville, TN, from the Class E airspace area of Tri-Cities Regional Airport, Tri-Cities, TN, is necessary to further the safety and management of Instrument Flight Rules (IFR) operations in the Tri- Cities, TN area.
Environmental Impact Statement; Taos Regional Airport, Taos, NM
The FAA is issuing this notice to advise the public that we have prepared a Record of Decision (ROD) for the ``Taos Regional Airport, Airport Layout Plan Improvements'' Environmental Impact Statement (EIS). The Town of Taos, owner and operator of Taos Regional Airport located in Taos, New Mexico, has requested the FAA to approve revisions to its Airport Layout Plan (ALP) to reflect and allow construction of a new runway and other associated airport projects; the Town is requesting Federal funding for the project. This ROD sets forth FAA's final determination and environmental approvals for the federal actions necessary to implement the proposed airport improvements under Alternative 2D, the FAA's selected alternative, and the Airport Sponsor to proceed with processing an application for federal funding.
Aviation Rulemaking Advisory Committee Meeting on Transport Airplane and Engine Issues
This notice announces a public meeting of the FAA's Aviation Rulemaking Advisory Committee (ARAC) to discuss transport airplane and engine (TAE) issues.
Airworthiness Directives; Cessna Aircraft Company Airplanes
We propose to adopt a new airworthiness directive (AD) for certain Cessna Aircraft Company Model 500, 501, 550, 551, S550, 560, 560XL, and 650 airplanes. This proposed AD was prompted by multiple reports of smoke and/or fire in the tailcone caused by sparking due to excessive wear of the brushes in the air conditioning (A/C) motor. This proposed AD would require an inspection to determine the accumulated hours on certain A/C drive motor assemblies; repetitive replacement of the brushes in the drive motor assembly, or as an option to the brush replacement, deactivation of the air conditioner; and return of replaced brushes to Cessna. We are proposing this AD to prevent the brushes in the A/C motor from wearing down beyond their limits, which could result in the rivet in the brush contacting the commutator causing sparks and consequent fire and/or smoke in the tailcone with no means to detect or extinguish the fire and/or smoke.
Airworthiness Directives; Airbus Airplanes
We propose to adopt a new airworthiness directive (AD) for certain Airbus Model A300 B4-600, B4-600R, and F4-600R series airplanes, and Model A300 C4-605R Variant F airplanes (collectively called A300-600 series airplanes); and Model A310 series airplanes. This proposed AD was prompted by reports of cracking through the honeycomb core closed with phenolic resin. This condition could result in extended debonding and could adversely affect the structural integrity of the rudder. This proposed AD would require inspecting to determine the serial number of a certain rudder and replacing the rudder with a new or serviceable rudder if necessary. We are proposing this AD to prevent extended de-bonding, which could result in loss of the rudder and consequent reduced controllability of the airplane.
Notice of Intent To Rule on Request To Release Airport Property at the St. George Airport, St. George, UT
The FAA proposes to rule and invite public comment on the release of land at St. George Airport under the provisions of Section 125 of the Wendell H. Ford Aviation Investment Reform Act for the 21st Century (AIR 21), now 49 U.S.C. 47107(h)(2).
Special Conditions: Embraer S.A. Model EMB-550 Airplanes, Sudden Engine Stoppage
This action proposes special conditions for the Embraer Model EMB-550 airplane. This airplane will have a novel or unusual design feature associated with the effects of sudden engine stoppage upon the airframe. The applicable airworthiness regulations do not contain adequate or appropriate safety standards for this design feature. These proposed special conditions contain the additional safety standards that the Administrator considers necessary to establish a level of safety equivalent to that established by the existing airworthiness standards.
Airworthiness Directives; Eurocopter France Helicopters
We propose to adopt a new airworthiness directive (AD) for the Eurocopter France (Eurocopter) Model AS332C, AS332L, and AS332L1 helicopters. This proposed AD is prompted by reports of electro-valve power supply disruptions while a helicopter is on the ground, causing the landing gear to retract and the helicopter nose to drop. This results in damage to the forward section of the helicopter's bottom structure. This proposed AD would require modifying the main landing gear control panel (control panel) 33G, connector 100G, and wiring. It also would require tests to ensure that these modifications function correctly. We propose this AD to prevent an uncommanded landing gear retraction that would cause the helicopter nose to drop and hit the ground while the rotor blades are spinning.
Airworthiness Directives; Eurocopter France Helicopters
We are adopting a new airworthiness directive (AD) for Eurocopter France (Eurocopter) Model EC 155B, EC155B1, SA-365N1, AS- 365N2 and AS 365 N3 helicopters to require visually inspecting the tail rotor hub (TRH) for a crack and removing the TRH if a crack exists. This AD is prompted by reports of cracks on two TRHs. These actions are intended to prevent the tail rotor from jamming, which could lead to reduced or loss of control of the helicopter.
Airworthiness Directives; Eurocopter France (Eurocopter) Helicopters
We propose to adopt a new airworthiness directive (AD) for Eurocopter Model SA-365N1, AS-365N2, and AS365N3 helicopters. This proposed AD would revise the Limitations section of the Rotorcraft Flight Manual (RFM) to prohibit flight in instrument meteorological conditions (IMC) or night visual flight rules (VFR) for each helicopter with a vertical gyro unit GV76-1 installed upon a non-reinforced shelf in the rear cargo compartment. Also, this proposed AD would require modifying the GV76-1 vertical gyro unit shelf and testing for correct function of the navigation systems. This proposed AD is prompted by flight crew reports of deviations between the displayed attitude on the attitude display screen and the independent electromechanical standby attitude indicator. The proposed actions are intended to prevent an undetected flight display error of a slow drift in the roll axis, disorientation of the pilot, and subsequent loss of control of the helicopter.
Airworthiness Directives; Bell Helicopter Textron, Inc.
We propose to adopt a new airworthiness directive (AD) for Bell Helicopter Textron, Inc. (Bell), Model 412 and 412EP helicopters. This proposed AD is prompted by reports of cracking in the swashplate outer ring assemblies (outer ring). This AD would establish a lower life limit on certain outer rings, requiring a revision of the retirement life on the components' history card or equivalent record, and a revision of the maintenance manual or Instructions for Continued Airworthiness (ICA). This proposal also would prohibit installing these outer rings on any helicopter. The proposed actions are intended to prevent failure of an outer ring because of cracking, which could lead to the loss of main rotor (M/R) blade pitch control and subsequent loss of helicopter control.
Airworthiness Directives; Rolls-Royce plc Turbofan Engines
We are superseding an existing airworthiness directive (AD) for all Rolls-Royce plc (RR) RB211-Trent 875-17, RB211-Trent 877-17, RB211-Trent 884-17, RB211-Trent 884B-17, RB211-Trent 892-17, RB211- Trent 892B-17, and RB211-Trent 895-17 turbofan engines. That AD currently requires initial and repetitive ultrasonic inspections (UIs) of certain low-pressure (LP) compressor blades identified by serial number (S/N). This new AD requires the same actions but expands the population of blades. This AD was prompted by the need to add the inspections of the LP compressor blades listed by S/N in Appendices 3H through 3L of RR plc Alert Service Bulletin (ASB) No. RB.211-72-AG244, Revision 4, dated December 22, 2011. We are issuing this AD to prevent multiple LP compressor blades from failing due to blade root cracks, which could lead to uncontained engine failure and damage to the airplane.
Airworthiness Directives; The Boeing Company Airplanes
We propose to adopt a new airworthiness directive (AD) for certain The Boeing Company Model 737-600, -700, -700C, -800, -900, and -900ER series airplanes. This proposed AD was prompted by a new revision to the airworthiness limitations of the maintenance planning data document. This proposed AD would require revising the maintenance program to update inspection requirements to detect fatigue cracking of principal structural elements (PSEs). We are proposing this AD to detect and correct fatigue cracking of various PSEs, which could adversely affect the structural integrity of these airplanes.
Airworthiness Directives; Airbus Airplanes
We propose to adopt a new airworthiness directive (AD) for all Airbus Model A330-200 Freighter series airplanes, Model A330-200 series airplanes, Model A330-300 series airplanes, Model A340-200 series airplanes, and Model A340-300 series airplanes. This proposed AD was prompted by a report of an in-flight turn back after the nose landing gear (NLG) did not retract after take-off. This proposed AD would require repetitive overhaul of the NLG retraction actuator. We are proposing this AD to prevent failure of the retraction actuator, which could cause collapse of the NLG after touchdown and possible injury to flightcrew and passengers.
Airworthiness Directives; Bombardier, Inc. Airplanes
We propose to supersede an existing airworthiness directive (AD) that applies to certain Bombardier, Inc. Model CL-600-2C10 (Regional Jet Series 700, 701, & 702) airplanes, Model CL-600-2D15 (Regional Jet Series 705) airplanes, and Model CL-600-2D24 (Regional Jet Series 900) airplanes. The existing AD currently requires repetitive inspections of the rudder travel limiter (RTL) return springs and primary actuator, and corrective actions if necessary. Since we issued that AD, terminating action has been developed which eliminates the need for the repetitive inspections. This proposed AD would require replacing certain RTL return springs, including doing related investigative and corrective actions, if necessary; and would also revise the applicability. We are proposing this AD to prevent failure of the RTL, which would permit an increase of rudder authority beyond normal structural limits and consequently affect the controllability of the airplane.
Airworthiness Directives; Airbus Airplanes
We propose to adopt a new airworthiness directive (AD) for all Airbus Model A300 B4-601, B4-603, B4-620, B4-605R, and B4-622R airplanes. This proposed AD was prompted by a report that the door frame shells of passenger doors 2 and 4 may not have sufficient structural strength to enable the airplane to operate safely. This proposed AD would require reinforcing of the door frame shells of passenger doors 2 and 4 on both sides of the fuselage. We are proposing this AD to prevent structural failure of the door frame shells, which could result in in-flight decompression of the airplane and consequent injury to passengers.
Airworthiness Directives; Empresa Brasileira de Aeronautica S.A. (EMBRAER) Airplanes
We are adopting a new airworthiness directive (AD) all Empresa Brasileira de Aeronautica S.A. (EMBRAER) Model EMB-135 airplanes, and Model EMB-145, -145ER, -145MR, -145LR, -145MP, and -145EP airplanes. This AD was prompted by a report of a lightning strike hitting an airplane tail boom causing certain rear bulkhead parts to jam an elevator control rod. This AD requires installing or reworking, as applicable, metallic diverters and aluminum sheets; modifying the light assembly on the tail boom rear movable fairing; and replacing the hood assembly with a new hood assembly and rerouting its electrical harness. We are issuing this AD to prevent lightning strikes from causing certain parts to contact the airplane pitch control system, which could reduce airplane controllability.
Airworthiness Directives; Fokker Services B.V. Airplanes
We are adopting a new airworthiness directive (AD) for certain Fokker Services B.V. Model F.28 Mark 0070 and 0100 airplanes. This AD was prompted by reports of burned contacts in a certain production break plug and its corresponding receptacle. This AD requires modifying galley power supply wiring by disconnecting it from the affected plug/ receptacle and reconnecting the power supply wiring through splices. We are issuing this AD to prevent a high electrical load, which might lead to overheating of the galley power supply wiring and/or the electrical connector and consequent smoke or fire in the galley area, which could result in damage to the airplane and injury to occupants.
Airworthiness Directives; General Electric Company Turbofan Engines
We are adopting a new airworthiness directive (AD) for General Electric Company GEnx-1B54, GEnx-1B58, GEnx-1B64, GEnx-1B67, GEnx-1B70, GEnx-1B54/P1, GEnx-1B58/P1, GEnx-1B64/P1, GEnx-1B67/P1, GEnx-1B70/P1, GEnx-1B70/72/P1, GEnx-1B70/75/P1, GEnx-1B74/75/P1, GEnx-1B75/P1, GEnx- 2B67, and GEnx-2B67B turbofan engines. This AD requires initial and repetitive ultrasonic inspections (UI) of certain part number (P/N) fan mid shafts (FMS) for cracks. This AD was prompted by a report of an FMS failure and a report of a crack found in another FMS. We are issuing this AD to prevent failure of the FMS resulting in one or more engine failure(s) and possible loss of the airplane.
Office of Commercial Space Transportation Safety Approval Performance Criteria
The FAA issued NASTAR a safety approval, subject to the provisions of Title 51 U.S.C. Subtitle V, ch. 509, and the orders, rules and regulations issued under it. Pursuant to Title 14 Code of Federal Regulations (14 CFR) 414.35, this Notice publishes the criteria that were used to evaluate the safety approval application.
Notice of Submission Deadline for Schedule Information for O'Hare International Airport, San Francisco International Airport, John F. Kennedy International Airport, and Newark Liberty International Airport for the Summer 2013 Scheduling Season
Under this notice, the FAA announces the submission deadline of October 11, 2012, for Summer 2013 flight schedules at Chicago's O'Hare International Airport (ORD), San Francisco International Airport (SFO), New York's John F. Kennedy International Airport (JFK), and Newark Liberty International Airport (EWR) in accordance with the International Air Transport Association (IATA) Worldwide Slot Guidelines. The deadline coincides with the schedule submission deadline for the IATA Slots Conference for the Summer 2013 scheduling season.
Notice of Request To Release Airport Property
The FAA proposes to rule and invites public comment on the release of land at the Meade Municipal Airport (MEJ), Meade, Kansas, under the provisions of 49 U.S.C. 47107(h)(2).
Airworthiness Directives; The Boeing Company Airplanes
We propose to supersede an existing airworthiness directive (AD) that applies to all The Boeing Company Model 737-600, -700, -700C, -800, -900, and -900ER series airplanes. The existing AD currently requires repetitive inspections of the aft attach lugs of the elevator tab control mechanisms, and replacement of any discrepant elevator tab control mechanism. Since we issued that AD, Boeing has developed a modification of the aft attach lugs of the elevator tab control mechanisms, which will adequately address the unsafe condition. This proposed AD would require replacing the left and right elevator tab control mechanisms with elevator tab control mechanisms that have the modified attach lugs, which would terminate the existing requirements. We are proposing this AD to prevent discrepancies in the aft attach lugs of the elevator tab control mechanism, which could result in severe elevator and tab vibration. Consequent structural failure of the elevator or horizontal stabilizer could result in loss of structural integrity and aircraft control.
Airworthiness Directives; Airbus Airplanes
We propose to adopt a new airworthiness directive (AD) for all Airbus Model A330-300 series airplanes and Model A340-200 and -300 series airplanes. This proposed AD was prompted by reports that, during a flight test, several spoiler servo-controls (SSCs) did not remain locked in the retracted position (hydraulic locking function) after manual depressurization of the corresponding hydraulic circuit. Loss of that locking functionwhich is ensured by a blocking valvewas caused by an internal leak from a sheared seal on the blocking valve. This proposed AD would require inspecting to determine if certain SSCs are installed, performing an operational test of any affected SSC, and replacing if necessary. We are proposing this AD to prevent loss of the hydraulic locking function during take-off and go-around phases, which, in combination with malfunction of one engine, could result in reduced controllability of the airplane.
Airworthiness Directives; The Boeing Company Airplanes
We propose to adopt a new airworthiness directive (AD) for certain The Boeing Company Model 737-300, 737-400, 737-500, and 757-200 series airplanes. This proposed AD was prompted by a report of damage caused by electrical arcing to the wires that connect seat electronics boxes (SEBs). This proposed AD would require installing a new relay and doing certain wiring changes of the entertainment control switch if necessary. We are proposing this AD to prevent power from being supplied to passenger seats when the entertainment control switch is in the OFF position, which could cause an electrical shock hazard resulting in serious or fatal injury to maintenance personnel.
Airworthiness Directives; Gulfstream Aerospace LP (Type Certificate Previously Held by Israel Aircraft Industries, Ltd.) Airplanes
We propose to adopt a new airworthiness directive (AD) for all Gulfstream Aerospace LP (Type Certificate Previously Held by Israel Aircraft Industries, Ltd.) Model Gulfstream G150 airplanes. This proposed AD was prompted by a review that determined that the runway slope and anti-ice corrections to V1 and take-off distances in the Gulfstream G150 Airplane Flight Manual (AFM) were presented in a non-conservative manner. This proposed AD would require revising the performance section of the AFM to include procedures to advise the flightcrew of certain runway slope and anti-ice corrections and take- off distance values. We are proposing this AD to prevent the use of published non-conservative data, which could result in the inability to meet the required take-off performance, with consequent hazard to safe operation during performance-limited take-off operations.
Airworthiness Directives; The Boeing Company Airplanes
We propose to adopt a new airworthiness directive (AD) for certain The Boeing Company Model 737-600, -700, -700C, -800, -900, and -900ER series airplanes. This proposed AD was prompted by a report of chafing damage to a wire bundle that was arcing to hydraulic tubing and caused by insufficient separation between the wire bundle and the hydraulic tubing in the main landing gear (MLG) wheel well. This proposed AD would require an inspection for damage of wire bundles and hydraulic tubing on the right side of the forward bulkhead of the MLG wheel well; installation of new clamps; and corrective actions, as applicable. We are proposing this AD to detect and correct possible damage caused by insufficient separation between the wire bundles and hydraulic tubing to prevent electrical arcing in a flammable fluid leakage zone, which could lead to a wheel well fire.
Airworthiness Directives; Airbus Airplanes
We propose to adopt a new airworthiness directive (AD) for certain Airbus Model A330-202, -203, -223, -243, -302, -323, -342, and -343 airplanes; and Model A340-313 airplanes. This proposed AD was prompted by reports that a specific batch of cargo doors might have deviations in quality related to door structure, such as irregular bore holes, improper application of sealant and paint, or uncleanliness. This proposed AD would require inspecting to identify the part and serial numbers of the forward and aft cargo doors, and replacing the affected cargo doors. We are proposing this AD to prevent the degraded structural capability of the cargo door, a primary structure, from leading to failure of the door, which could lead to a breach through the door or the door detaching from the airplane, resulting in potential rapid decompression.
Technical Amendment; Airworthiness Standards: Aircraft Engines; Correction
The FAA is correcting a technical amendment published on July 5, 2012 (77 FR 39623). In that technical amendment, the FAA clarified aircraft engine vibration test requirements in the airworthiness standards. The technical amendment was in response to inquiries from applicants requesting FAA engine type certifications and aftermarket certifications, such as supplemental type certificates, parts manufacturing approvals, and repairs. We revised the regulation to clarify that engine surveys require an engine test. Representatives of industry suggested that our technical amendment was in fact, a substantive change in the regulation, not a clarification. The FAA is correcting our prior action in response to that industry claim. This document amends the FAA's regulations to reverse the changes to Sec. 33.83(a) amendment 33-33 and restore Sec. 33.83(a) to its previous amendment 33-17.
31st Meeting: RTCA Special Committee 206, Aeronautical Information and Meteorological Data Link Services
The FAA is issuing this notice to advise the public of the thirty-first meeting of the RTCA Special Committee 206, Aeronautical Information and Meteorological Data Link Services.
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.
Airworthiness Directives; GA 8 Airvan (Pty) Ltd Airplanes
We propose to adopt a new airworthiness directive (AD) for GA 8 Airvan (Pty) Ltd Models GA8 and GA8-TC320 airplanes. 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 burnt electrical connectors leading to the left-hand wingtip pitot heater, which may result in loss of air speed indication. We are issuing this proposed AD to require actions to address the unsafe condition on these products.
Agency Information Collection Activities: Requests for Comments; Clearance of Renewed Approval of Information Collection: Operating Requirements: Commuter and On Demand Operations
In accordance with the Paperwork Reduction Act of 1995, FAA invites public comments about our intention to request the Office of Management and Budget (OMB) approval to renew an information collection. The Federal Register Notice with a 60-day comment period soliciting comments on the following collection of information was published on July 9, 2012, vol. 77, no. 131, page 40404. 14 CFR part 135 prescribes requirement for Air Carrier/Commercial Operators. The info collected shows compliance and applicant eligibility.
Agency Information Collection Activities: Requests for Comments; Clearance of Renewed Approval of Information Collection: FAA Acquisition Management System (FAAAMS)
In accordance with the Paperwork Reduction Act of 1995, FAA invites public comments about our intention to request the Office of Management and Budget (OMB) approval to renew an information collection. The Federal Register Notice with a 60-day comment period soliciting comments on the following collection of information was published on July 9, 2012, vol. 77, no. 131, page 40403. The FAA Acquisition Management System establishes policies and internal procedures for FAA acquisition. The information collection is necessary to solicit, award, and administer contracts for supplies, equipment, services, facilities, and real property to fulfill FAA's mission.
Agency Information Collection Activities: Requests for Comments; Clearance of Renewed Approval of Information Collection: Changes in Permissible Stage 2 Airplane Operations
In accordance with the Paperwork Reduction Act of 1995, FAA invites public comments about our intention to request the Office of Management and Budget (OMB) approval to renew an information collection. The Federal Register Notice with a 60-day comment period soliciting comments on the following collection of information was published on July 9, 2012, vol. 77, no. 131, page 40405. This information is used to issue special flight authorizations for non- revenue transports and non-transport jet operations of Stage 2 airplanes at U.S. airports. A minimal amount of data is requested to identify the affected parties and determine whether the purpose for the flight is one enumerated by law.
Fourth Meeting: RTCA Special Committee 226, Audio Systems and Equipment
The FAA is issuing this notice to advise the public of the fourth meeting of the RTCA Special Committee 226, Audio Systems and Equipment.
Airport Privatization Pilot Program
The Federal Aviation Administration (FAA) received the final application from the Puerto Rico Ports Authority and Puerto Rico Public-Private Partnerships Authority for the participation of Luis Mu[ntilde]oz Mar[iacute]n International Airport, San Juan, Puerto Rico (SJU) in the Airport Privatization Pilot Program and has determined that the final application is substantially complete and accepted for review. The FAA is seeking information and comments from interested parties on the final application. In furtherance of this effort, the Department of Transportation (DOT), the Federal Aviation Administration and the Transportation Security Administration will conduct a public meeting on Friday, September 28, 2012, in San Juan, Puerto Rico. Title 49 U.S.C. Section 47134 establishes an airport privatization pilot program and authorizes the Department of Transportation to grant exemptions from certain Federal statutory and regulatory requirement for up to five airport privatization projects. The FAA Modernization and Reform Act of 2012 expanded the pilot program from five to ten airports. The application procedures require the FAA to publish a notice of receipt of the final application in the Federal Register and accept public comment on the final application for a period of 60 days.
Airworthiness Directives; Lycoming Engines Reciprocating Engines
We are superseding an existing airworthiness directive (AD) for certain Lycoming Engines (L)O-360, (L)IO-360, AEIO-360, O-540, IO- 540, AEIO-540, (L)TIO-540, IO-580, and IO-720 series reciprocating engines. That AD currently requires replacing certain crankshafts in the affected engines. This AD continues to require replacing certain crankshafts, corrects the start date of affected engine models in Lycoming Mandatory Service Bulletin (MSB) No. 569A to the start date in Supplement No. 1 to Lycoming MSB No. 569A, dated May 27, 2009, and includes additional (formerly experimental) IO-390, AEIO-390, and AEIO- 580 series engine models having affected crankshafts. This AD was prompted by Lycoming Engines discovering that the start date of affected engine models in MSB No. 569A is incorrect and the need to include additional engine models having the affected crankshafts. We are issuing this AD to prevent failure of the crankshaft, which will result in total engine power loss, in-flight engine failure, and possible loss of the aircraft.
Airworthiness Directives; Turbomeca S.A. Turboshaft Engines
We are superseding an existing airworthiness directive (AD) for certain Turbomeca S.A. Arriel 2B and 2B1 turboshaft engines. That AD currently requires accomplishment of the TU166 modification. This new AD requires adding the Arriel 2S2 and 2C2 engines to the applicability of engines requiring the TU166 modification with different compliance times. This AD was prompted by reports of an accident involving a twin-engine helicopter powered by two Arriel 2S2 engines. We are issuing this AD to prevent rupture of a gas generator (GG) turbine blade, which could result in an uncommanded in-flight shutdown and a forced landing or accident.
Airworthiness Directives; The Cessna Aircraft Company Airplanes
We are adopting a new airworthiness directive (AD) for certain The Cessna Aircraft Company Model 750 airplanes. This AD was prompted by reports of direct current (DC) generator overvoltage events. This AD requires replacing the auxiliary power unit (APU) generator control unit (GCU). We are issuing this AD to prevent DC generator overvoltage events, which could result in smoke in the cockpit and loss of avionics and electrical systems.
Airworthiness Directives; The Boeing Company Airplanes
We are superseding an existing airworthiness directive (AD) for all The Boeing Company Model 737-100, -200, -200C, -300, -400, and -500 series airplanes. That AD currently requires repetitive inspections to detect cracking in the web of the aft pressure bulkhead at body station 1016 at the aft fastener row attachment to the ``Y'' chord, and corrective actions if necessary. This new AD adds various inspections for discrepancies at the aft pressure bulkhead, and related investigative and corrective actions if necessary. This AD was prompted by several reports of fatigue cracking at that location. We are issuing this AD to detect and correct such fatigue cracking, which could result in rapid decompression of the fuselage.
Airworthiness Directives; Bombardier, Inc. Airplanes
We are adopting a new airworthiness directive (AD) for certain Bombardier, Inc. 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. This AD was prompted by reports of failures of a hydraulic accumulator's screw-cap/end cap while on the ground that resulted in loss of use of that hydraulic system, and in high-energy impact damage to adjacent systems and structures. This AD requires an inspection for part numbers; repetitive inspections for any cracking of certain hydraulic system accumulators, and replacement, if necessary; and revising the maintenance program to include a life limit for certain hydraulic system accumulators. We are issuing this AD to prevent loss of use of a hydraulic system, which could result in reduced controllability of the airplane.
Airworthiness Directives; Eurocopter France Helicopters
We are adopting a new airworthiness directive (AD) for Eurocopter France (Eurocopter) Model SA330F, SA330G, SA330J, AS332C, AS332L, AS332L1, and AS332L2 helicopters to require cleaning, inspecting, and lubricating each tangential gearbox (gearbox) and adjusting, as necessary, the fuel shut-off control lever. This AD was prompted by the jamming of one of two fuel shut-off control levers because of solidified grease in the gearbox. A companion gearbox had extensive corrosion. In case of an emergency, pilots may need to use the control levers to shut off fuel going into the engine and to shut off the helicopter's electrical power system. The jamming of the levers prevents the shut off of the engine fuel and prevents the parallel- mounted micro switches from switching off the electrical power system. These actions are intended to prevent the jamming of the control levers, which could prevent shut-off of the engine fuel and electrical power system during an emergency shutdown.
Airworthiness Directives; Airbus Airplanes
We are superseding an existing airworthiness directive (AD) for all Airbus Model A330-243, -341, -342 and -343 airplanes. That AD currently requires modifying certain cowl assemblies of the left- and right-hand thrust reversers. This new AD requires removing certain C- duct assemblies of the left- and right-hand thrust reversers from service at certain designated life limits, and also adds airplanes to the applicability. This AD was prompted by new life limits on certain thrust reverser C-duct assemblies. We are issuing this AD to prevent fatigue cracking of the hinges integrated into the 12 o'clock beam of the thrust reversers, which could result in separation of a thrust reverser from the airplane, and consequent reduced controllability of the airplane.
Airworthiness Directives; Piper Aircraft, Inc. Airplanes
We propose to supersede an existing airworthiness directive (AD) that applies to all Piper Aircraft, Inc. Models PA-31, PA-31-325, and PA-31-350 airplanes. The existing AD currently requires a detailed repetitive inspection of the exhaust system downstream of the turbochargers and repair or replacement of parts as necessary. Since we issued that AD, forced landings of aircraft have occurred due to exhaust system failures upstream of aircraft turbochargers and between recurring detailed inspections. This proposed AD would require both visual and detailed repetitive inspections, expanding the inspection scope to include the entirety of each airplane exhaust system. We are proposing this AD to prevent the possibility of an inflight powerplant fire due to an exhaust system failure.
Airworthiness Directives; Stemme GmbH & Co. KG Powered Sailplanes
We propose to adopt a new airworthiness directive (AD) for all Stemme GmbH & Co. KG Models S10, S10-V, and S10-VT powered sailplanes. 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 unapproved rubber hoses installed in the engine fuel, oil, and cooling systems, which could lead to a system leak and result in an engine fire. We are issuing this proposed AD to require actions to address the unsafe condition on these products.
Airworthiness Directives; The Boeing Company Airplanes
We propose to adopt a new airworthiness directive (AD) for certain The Boeing Company Model 737-700 and -700C series airplanes. This proposed AD was prompted by reports of early fatigue cracks at chem-mill areas on the crown skin panels. This proposed AD would require repetitive inspections for cracking of the fuselage skin at certain locations at chem-mill areas, and repair if necessary. We are proposing this AD to detect and correct fatigue cracking of the skin panel at the specified chem-mill step locations, which could result in rapid decompression of the airplane.
Airworthiness Directives; The Boeing Company Airplanes
We propose to adopt a new airworthiness directive (AD) for certain The Boeing Company Model 737-800 series airplanes. This proposed AD was prompted by reports of early fatigue cracks at chem- mill areas on the crown skin panels. This proposed AD would require repetitive inspections for cracking of the fuselage skin along chem- mill steps at certain crown skin and shear wrinkle areas, and repair if necessary. We are proposing this AD to detect and correct fatigue cracking of the skin panel at the specified chem-mill step locations, which could result in rapid decompression of the airplane.
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