Federal Aviation Administration October 31, 2013 – Federal Register Recent Federal Regulation Documents

Proposed Establishment of Class E Airspace; Eagle, AK
Document Number: 2013-25995
Type: Proposed Rule
Date: 2013-10-31
Agency: Federal Aviation Administration, Department of Transportation
This action proposes to establish Class E airspace at Eagle Airport, Eagle, AK. Controlled airspace is necessary to accommodate the new Area Navigation (RNAV) Global Positioning System (GPS) standard instrument approach procedures developed for the airport. The FAA is proposing this action to enhance the safety and management of aircraft operations at Eagle Airport, Eagle, AK.
Proposed Modification of Class D and Class E Airspace; Kailua-Kona, HI
Document Number: 2013-25994
Type: Proposed Rule
Date: 2013-10-31
Agency: Federal Aviation Administration, Department of Transportation
This action proposes to modify Class D and E airspace at Kona International Airport at Keahole, Kailua-Kona, HI. Controlled airspace is necessary to accommodate the Area Navigation (RNAV) Global Positioning System (GPS) and the Instrument Landing System (ILS) or Localizer (LOC) standard instrument approach procedures at the airport. The geographic coordinates of the airport also would be adjusted in the respective Class D and E airspace areas, and the airport name will be corrected to Kona International Airport at Keahole. This action, initiated by the biennial review of the Kona airspace area, would enhance the safety and management of aircraft operations at the airport.
Proposed Establishment of Class E Airspace; Brevig Mission, AK
Document Number: 2013-25991
Type: Proposed Rule
Date: 2013-10-31
Agency: Federal Aviation Administration, Department of Transportation
This action proposes to establish Class E airspace at Brevig Mission Airport, Brevig Mission, AK. Controlled airspace is necessary to accommodate aircraft using new Area Navigation (RNAV) Global Positioning System (GPS) standard instrument approach procedures at the airport. The FAA is proposing this action to enhance the safety and management of aircraft operations at the airport.
Proposed Establishment of Class E Airspace; Central, AK
Document Number: 2013-25970
Type: Proposed Rule
Date: 2013-10-31
Agency: Federal Aviation Administration, Department of Transportation
This action proposes to establish Class E airspace at Central Airport, Central, AK. Controlled airspace is necessary to accommodate the new Area Navigation (RNAV) Global Positioning System (GPS) standard instrument approach procedures at the airport. The FAA is proposing this action to enhance the safety and management of aircraft operations at Central Airport, Central, AK.
Modification of Class D and E Airspace; Kenai, AK
Document Number: 2013-25853
Type: Rule
Date: 2013-10-31
Agency: Federal Aviation Administration, Department of Transportation
This action modifies Class D and E airspace at Kenai Municipal Airport, Kenai, AK. Controlled airspace is necessary to accommodate aircraft using the new Area Navigation (RNAV) Global Positioning System (GPS) standard instrument approach procedures at the airport. A minor adjustment is made to the geographic coordinates of the airport. Additionally, language establishing dates and times of use of the procedures was inadvertently omitted from the description for the Class E airspace designated as an extension, and is included in this rule. This action, initiated by the biennial review of the Kenai airspace area, enhances the safety and management of aircraft operations at the airport.
Notice of Request To Release Airport Property
Document Number: 2013-25852
Type: Notice
Date: 2013-10-31
Agency: Federal Aviation Administration, Department of Transportation
The FAA proposes to rule and invites public comment on the release of land at the Kearney Regional Airport, Kearney, Nebraska, under the provisions of 49 U.S.C. 47107(h)(2).
Special Conditions: Learjet Model 45 Series Airplanes; Isolation or Security Protection of the Aircraft Control Domain and the Airline Information Services Domain From the Passenger Services Domain
Document Number: 2013-25851
Type: Rule
Date: 2013-10-31
Agency: Federal Aviation Administration, Department of Transportation
These special conditions are issued for the Learjet Model 45 series airplanes. These airplanes will have novel or unusual design features associated with connectivity of the passenger service computer systems to the airplane critical systems and data networks. The applicable airworthiness regulations do not contain adequate or appropriate safety standards for this design feature. These 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.
Special Conditions: Learjet Model 45 Series Airplanes; Aircraft Electronic System Security Protection From Unauthorized External Access
Document Number: 2013-25846
Type: Rule
Date: 2013-10-31
Agency: Federal Aviation Administration, Department of Transportation
These special conditions are issued for the Learjet Model 45 series airplanes. These airplanes will have a novel or unusual design feature associated with the architecture and connectivity capabilities of the airplanes' computer systems and networks. Connectivity to, or access by, external systems and networks may result in security vulnerabilities to the airplanes' systems. The applicable airworthiness regulations do not contain adequate or appropriate safety standards for this design feature. These 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.
Special Conditions: Bombardier Inc., Models BD-500-1A10 and BD-500-1A11 Series Airplanes; Fuselage Post-Crash Fire Survivability
Document Number: 2013-25843
Type: Proposed Rule
Date: 2013-10-31
Agency: Federal Aviation Administration, Department of Transportation
This action proposes special conditions for the Bombardier Inc. Models BD-500-1A10 and BD-500-1A11 series airplanes. These airplanes will have a novel or unusual design feature associated with aluminum-lithium fuselage construction that may provide different levels of protection from post-crash fire threats than similar aircraft constructed from traditional aluminum structure. 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.
Special Conditions: Learjet Inc., Model LJ-200-1A10 Airplane; Crashworthiness, Emergency Landing Conditions
Document Number: 2013-25841
Type: Proposed Rule
Date: 2013-10-31
Agency: Federal Aviation Administration, Department of Transportation
This action proposes special conditions for the Learjet Model LJ-200-1A10 airplane. This airplane will have novel or unusual design features when compared to the state of technology envisioned in the airworthiness standards for transport category airplanes. These features are associated with a hybrid construction that uses both composite and metallic materials in the structure for which the crashworthiness responses for occupant safety may not be equivalent to current all-metallic airplanes. The applicable airworthiness regulations do not contain adequate or appropriate safety standards for the crashworthiness of 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.
Approval of Noise Compatibility Program for Tucson International Airport, Tucson, Arizona
Document Number: 2013-25826
Type: Notice
Date: 2013-10-31
Agency: Federal Aviation Administration, Department of Transportation
The Federal Aviation Administration (FAA) announces its findings on the noise compatibility program submitted by the Tucson Airport Authority (TAA) under the provisions of 49 U.S.C. 47501 et seq. (formerly the Aviation Safety and Noise Abatement Act, hereinafter referred to as ``the Act'') and 14 Code of Federal Regulations (CFR) Part 150 (hereinafter referred to as ``Part 150''). On March 20, 2013, the FAA determined that the noise exposure maps submitted by the TAA under Part 150 were in compliance with applicable requirements. On September 9, 2013, the FAA approved the Tucson International Airport noise compatibility program. Most of the recommendations of the program were approved. No program elements relating to new or revised flight procedures for noise abatement were proposed.
Order 1050.1F Environmental Impacts: Policies and Procedures
Document Number: 2013-25820
Type: Notice
Date: 2013-10-31
Agency: Federal Aviation Administration, Department of Transportation
This action re-opens the comment period for the notice of draft Order 1050.1F, Environmental Impacts: Policies and Procedures that was published on August 14, 2013. Airports Council International North America (ACI-NA), which represents local, regional and state governing bodies that own and operate commercial airports across the United States, requested that the FAA extend the comment period for 14 days.
Airworthiness Directives; MD Helicopters, Inc. (MDHI) Helicopters
Document Number: 2013-25702
Type: Rule
Date: 2013-10-31
Agency: Federal Aviation Administration, Department of Transportation
We are adopting a new airworthiness directive (AD) for MDHI Model MD900 helicopters with certain main rotor blade (MRB) retention bolts (bolts) installed. This AD requires a daily check of the position of each bolt, a daily check and a repetitive inspection for a gap in each bolt, and, if necessary, removing and inspecting the bolt for a crack and replacing any cracked bolt with an airworthy bolt. This AD was prompted by multiple reports of in-service bolt failures. The actions are intended to prevent failure of a bolt, which could lead to loss of MRB structural integrity and subsequent loss of control of the helicopter.
Special Conditions: Bombardier Inc., Models BD-500-1A10 and BD-500-1A11 series airplanes; Fuselage In-Flight Fire Safety and Flammability Resistance
Document Number: 2013-25663
Type: Proposed Rule
Date: 2013-10-31
Agency: Federal Aviation Administration, Department of Transportation
This action proposes special conditions for the Bombardier Inc. Model BD-500-1A10 and BD-500-1A11 series airplanes. These airplanes will have a novel or unusual design feature associated with the materials used to fabricate the fuselage, which may affect fire propagation during an in-flight fire. 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; Bombardier, Inc. Airplanes
Document Number: 2013-25629
Type: Rule
Date: 2013-10-31
Agency: Federal Aviation Administration, Department of Transportation
We are adopting a new airworthiness directive (AD) for certain Bombardier, Inc. Model DHC-8-400, -401, and -402 airplanes. This AD was prompted by reports of movement of the rudder pedals being impeded due to corrosion of the trunnion shaft of the rudder feel trim unit (RFTU). This AD requires an inspection to determine if certain RFTUs are installed, an operational check for signs of seizure of affected parts, repetitive lubrication of certain RFTUs, and replacement of the RFTU if necessary. Installing replacement RFTUs having conformal bushings terminates the repetitive lubrication requirements. We are issuing this AD to detect and correct any sign of rough movement or seizure of the trunnion shaft and its bushing, which could cause a rudder control jam or a large and rapid alternating rudder input leading to a structural failure of the vertical fin.
Airworthiness Directives; BAE Systems (Operations) Limited Airplanes
Document Number: 2013-25627
Type: Rule
Date: 2013-10-31
Agency: Federal Aviation Administration, Department of Transportation
We are adopting a new airworthiness directive (AD) for all BAE Systems (Operations) Limited Model BAe 146 and Avro 146-RJ series airplanes. This AD was prompted by a report of a cracked pick-up bracket of the forward outboard pylon of the number 1 engine due to stress corrosion. This AD requires repetitive inspections and, depending on findings, repair of the pylon pick-up brackets. We are issuing this AD to detect and correct cracking of the pick-up bracket, which could result in the engine pylon separating from the wing, with consequent damage to the airplane and reduced controllability.
Special Conditions: Bombardier Inc., Models BD-500-1A10 and BD-500-1A11 Series Airplanes; Interactions of Systems and Structures
Document Number: 2013-25448
Type: Rule
Date: 2013-10-31
Agency: Federal Aviation Administration, Department of Transportation
These special conditions are issued for the Bombardier Inc. Models BD-500-1A10 and BD-500-1A11 series airplanes. These airplanes will have novel or unusual features when compared to the state of technology envisioned in the airworthiness standards for transport category airplanes. These design features include systems that, directly or as a result of failure or malfunction, affect structural performance. The applicable airworthiness regulations do not contain adequate or appropriate safety standards for these design features. These 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 Deutschland GmbH Helicopters
Document Number: 2013-25312
Type: Rule
Date: 2013-10-31
Agency: Federal Aviation Administration, Department of Transportation
We are adopting a new airworthiness directive (AD) for Eurocopter Deutschland GmbH (Eurocopter) Model EC135 P1, P2, P2+, T1, T2, and T2+ helicopters. This AD requires inspecting each linear transducer bearing (bearing) for freedom of movement and replacing the bearing if there is binding or rough turning or if there is chafing or damage on the lower side of the floor. Also, this AD requires modifying and re-identifying a certain rod. This AD was prompted by an incident involving limited control of a tail rotor because of the binding of a bearing. The actions of this AD are intended to detect and replace each bearing subject to binding, which could lead to subsequent loss of control of the helicopter.
Airworthiness Directives; Bell Helicopter Textron Canada (Bell) Helicopters
Document Number: 2013-25310
Type: Rule
Date: 2013-10-31
Agency: Federal Aviation Administration, Department of Transportation
We are adopting a new airworthiness directive (AD) for Bell Model 206L-4 and 407 helicopters. This AD requires replacing or reworking certain aft bearing caps. This AD was prompted by the manufacture of certain freewheel aft bearing caps without a lubrication channel to allow oil flow into the aft bearing support assembly. The actions of this AD are intended to prevent failure of the freewheel unit and subsequent loss of control of the helicopter.
Airworthiness Directives; The Boeing Company Airplanes
Document Number: 2013-25308
Type: Rule
Date: 2013-10-31
Agency: Federal Aviation Administration, Department of Transportation
We are adopting a new airworthiness directive (AD) for certain The Boeing Company Model 747-400 series airplanes. This AD was prompted by reports of fasteners missing on an airplane undergoing a passenger- to-freighter conversion. This AD requires doing a general visual inspection of the station 1920 splice clip for correct fastener installation, and related investigative and corrective actions if necessary. We are issuing this AD to detect and correct missing or incorrect fasteners, which can lead to cracking and loss of load carrying capacity, resulting in a possible decompression event.
Airworthiness Directives; The Boeing Company Airplanes
Document Number: 2013-25307
Type: Rule
Date: 2013-10-31
Agency: Federal Aviation Administration, Department of Transportation
We are superseding Airworthiness Directive (AD) 94-13-06 for certain The Boeing Company Model 747 series airplanes. AD 94-13-06 required repetitive detailed inspections to detect cracking in certain fuselage upper deck tension ties, repair or modification of any cracked tension ties, and repetitive inspections of repaired and modified tension ties and repair or modification if necessary. AD 94-13-06 also provided for optional terminating action for the repetitive detailed inspections of tension ties that had not been repaired or modified. This new AD retains the repetitive inspections, mandates the previously optional terminating modification, and adds, for tension ties that have not been repaired or modified, repetitive inspections that must be done concurrently with the existing repetitive inspections. This AD was prompted by an evaluation by the design approval holder indicating that the upper deck tension ties of the fuselage are subject to widespread fatigue damage. We are issuing this AD to prevent widespread fatigue damage of certain fuselage upper deck tension ties, which could result in reduced structural integrity of the airplane.
Airworthiness Directives; Bombardier, Inc. Airplanes
Document Number: 2013-25306
Type: Rule
Date: 2013-10-31
Agency: Federal Aviation Administration, Department of Transportation
We are adopting a new airworthiness directive (AD) for certain Bombardier, Inc. Model CL-600-2B16 (CL-601-3A, CL-601-3R, and CL-604 Variants) airplanes. This AD was prompted by reports of airspeed mismatch between the pilot and co-pilot's airspeed indicators, which occurred during or after heavy rain. This AD requires, for certain airplanes, inspecting for drain bottles having certain part numbers, and replacing affected drain bottles. This AD requires, for certain other airplanes, replacing drain bottles. We are issuing this AD to prevent pitot static tubing from becoming blocked by water, which if not corrected, could lead to erroneous airspeed and altitude indications, and consequent loss of control of the airplane.
Airworthiness Directives; Bombardier, Inc. Airplanes
Document Number: 2013-25305
Type: Rule
Date: 2013-10-31
Agency: Federal Aviation Administration, Department of Transportation
We are adopting a new airworthiness directive (AD) for certain Bombardier, Inc. Model DHC-8-102, -103, and -106 airplanes; and Model DHC-8-200, -300, and -400 series airplanes. This AD was prompted by reports of excessive wear found in the clevis (bolt) hole where the rod assembly attaches to the rudder/brake pedal bellcrank, due to prolonged fretting. This AD requires measuring the bellcrank clevis holes, inspecting for cracking of the bellcrank, and re-working the clevis holes with steel bushings, or replacing the bellcrank. We are issuing this AD to detect and correct a worn or cracked clevis hole, which could cause failure of the bellcrank on one side, with subsequent asymmetric braking and consequent runway excursion.
Airworthiness Directives; The Boeing Company Airplanes
Document Number: 2013-25132
Type: Rule
Date: 2013-10-31
Agency: Federal Aviation Administration, Department of Transportation
We are adopting a new airworthiness directive (AD) for all The Boeing Company Model 727 airplanes. This AD was prompted by reports indicating that a standard fuel tank access door was located where an impact-resistant access door was required, and stencils were missing from some impact-resistant access doors. This AD requires an inspection of the left- and right-hand wing fuel tank access doors to determine that impact-resistant access doors are installed in the correct locations, and to replace any door with an impact-resistant access door if necessary. This AD also requires an inspection for stencils and index markers on impact-resistant access doors, and application of new stencils or index markers if necessary. This AD also requires revising the maintenance program to incorporate changes to the airworthiness limitations section. We are issuing this AD to prevent foreign object penetration of the fuel tank, which could cause a fuel leak near an ignition source (e.g., hot brakes), consequently leading to a fuel-fed fire.
Airworthiness Directives; Airbus Airplanes
Document Number: 2013-25130
Type: Rule
Date: 2013-10-31
Agency: Federal Aviation Administration, Department of Transportation
We are adopting a new airworthiness directive (AD) for all Airbus Model A330-300 series airplanes and Model A340-200 and -300 series airplanes. This AD was prompted by reports of corrosion found on certain trimmable horizontal stabilizer actuators (THSA), affecting the ballscrew lower splines between the tie bar and the screw-jack. This AD requires repetitive detailed inspections for corrosion of certain THSAs, ballscrew integrity tests if necessary; and replacing any affected THSA with a serviceable or new and improved THSA, if necessary. We are issuing this AD to detect and correct corrosion of the THSAs, which could lead, in the case of ballscrew rupture, to the loss of transmission of THSA torque loads from the ballscrew to the tie-bar, prompting THSA blowback, and possibly resulting in loss of control of the airplane.
Airworthiness Directives; Sikorsky Aircraft Corporation-Manufactured (Sikorsky) Model Helicopters (Type Certificate Currently Held by Erickson Air-Crane Incorporated)
Document Number: 2013-24955
Type: Rule
Date: 2013-10-31
Agency: Federal Aviation Administration, Department of Transportation
We are superseding Airworthiness Directive (AD) 97-19-10 for Sikorsky Aircraft Corporation-manufactured Model S-64E helicopters (type certificate currently held by Erickson Air-Crane Incorporated (Erickson)). AD 97-19-10 required inspecting and reworking the main gearbox (MGB) assembly second stage lower planetary plate (plate). This action establishes or reduces the life limits for certain flight- critical components, removes from service various parts, requires repetitive inspections and other corrective actions, and requires replacing any cracked part discovered during an inspection. This AD is prompted by further analysis performed by the current type certificate holder and the service history of certain parts. The actions specified in this AD are intended to prevent a crack in a flight critical component, failure of a critical part, and subsequent loss of control of the helicopter.
Airworthiness Directives; ATR-GIE Avions de Transport Régional Airplanes
Document Number: 2013-24952
Type: Rule
Date: 2013-10-31
Agency: Federal Aviation Administration, Department of Transportation
We are adopting a new airworthiness directive (AD) for certain ATRGIE Avions de Transport R[eacute]gional Model ATR72-101, -201, - 102, -202, -211, -212, and -212A airplanes. This AD was prompted by reports of airplane incidents and accidents that have occurred because of low-level fuel tank situations and fuel starvation that resulted in engine flameouts. This AD requires installing a fuel quantity indicator (FQI) equipped with a locking adaptor on the electrical connector. We are issuing this AD to prevent an engine flame-out, which could result in reduced controllability of the airplane.
Airworthiness Directives; The Boeing Company Airplanes
Document Number: 2013-24943
Type: Rule
Date: 2013-10-31
Agency: Federal Aviation Administration, Department of Transportation
We are adopting a new airworthiness directive (AD) for certain The Boeing Company Model 727 airplanes. This AD was prompted by certain mandated programs intended to support the airplane reaching its limit of validity (LOV) of the engineering data that support the established structural maintenance program. This AD requires, for certain airplanes, a modification of the web of the horizontal stabilizer center section rear spar. For the other airplanes, this AD requires an inspection for cracks in the web, and repair or modification as applicable. We are issuing this AD to prevent cracking at the upper fastener holes in the riveted web in the horizontal stabilizer center section rear spar, which could result in failure of the spar forging and lead to horizontal stabilizer separation and loss of control of the airplane.
Airworthiness Directives; MD Helicopters, Inc., Helicopters
Document Number: 2013-24039
Type: Rule
Date: 2013-10-31
Agency: Federal Aviation Administration, Department of Transportation
We are superseding Airworthiness Directive (AD) 2003-08-51 for MD Helicopters, Inc. (MDHI), Model 369A, 369D, 369E, 369H, 369HE, 369HM, 369HS, 369F and 369FF helicopters with certain MDHI or Helicopter Technology Company (HTC) tail rotor blades installed. AD 2003-08-51 required reducing the retirement life of each tail rotor blade (blade), performing a one-time visual inspection of each blade's pitch horn (pitch horn) for a crack or corrosion, and replacing any cracked blade or any blade that has exceeded its retirement life with an airworthy blade. AD 2003-08-51 also required reporting information to the FAA within 24 hours following the one-time inspection. Since we issued AD 2003-08-51, an accident in England prompted an investigation that showed corrosion on the blade's pitch horn that had not been detected under the paint. This new AD retains some of the requirements of AD 2003-08-51 and also requires paint removal for all pitch horn inspections, inspecting for pitting and the shot peen surface's condition in addition to cracks and corrosion, and adds certain part- numbered blades to the applicability. These actions are intended to prevent a pitch horn from cracking, leading to vibration, loss of tail rotor pitch control, and subsequent loss of tail rotor and helicopter control.
Airworthiness Directives; Agusta S.p.A. (Type Certificate Currently Held by AgustaWestland S.p.A) (Agusta) Helicopters
Document Number: 2013-24038
Type: Rule
Date: 2013-10-31
Agency: Federal Aviation Administration, Department of Transportation
We are adopting a new airworthiness directive (AD) for Agusta Model A109A, A109AII, and A109C helicopters with a certain third stage turbine wheel installed. This AD requires installing a placard on the instrument panel and revising the limitations section of the rotorcraft flight manual (RFM). This AD was prompted by several incidents of third stage engine turbine wheel failures, which were caused by excessive vibrations at certain engine speeds during steady-state operations. These actions are intended to alert pilots to avoid certain engine speeds during steady-state operations, prevent failure of the third stage engine turbine, engine power loss, and subsequent loss of control of the helicopter.
Airworthiness Directives; Bell Helicopter Textron Canada Limited (Bell) Helicopters
Document Number: 2013-24035
Type: Rule
Date: 2013-10-31
Agency: Federal Aviation Administration, Department of Transportation
We are adopting a new airworthiness directive (AD) for certain Bell Model 430 helicopters. This AD requires installing a placard on the instrument panel and revising the limitations section of the rotorcraft flight manual (RFM). This AD was prompted by several incidents of third stage engine turbine wheel failures, which were caused by excessive vibrations at certain engine speeds during steady- state operations. These actions are intended to alert pilots to avoid certain engine speeds during steady-state operations, prevent failure of the third stage engine turbine, engine power loss, and subsequent loss of control of the helicopter.
Airworthiness Directives; Bell Helicopter Textron Canada Limited (Bell) Helicopters
Document Number: 2013-24032
Type: Rule
Date: 2013-10-31
Agency: Federal Aviation Administration, Department of Transportation
We are adopting a new airworthiness directive (AD) for Bell Model 230 helicopters. This AD requires installing a placard on the instrument panel and revising the limitations section of the rotorcraft flight manual (RFM). This AD was prompted by several incidents of third stage engine turbine wheel failures, which were caused by excessive vibrations at certain engine speeds during steady-state operations. These actions are intended to alert pilots to avoid certain engine speeds during steady-state operations, prevent failure of the third stage engine turbine, engine power loss, and subsequent loss of control of the helicopter.
Airworthiness Directives; Bell Helicopter Textron Canada Limited (Bell) Helicopters
Document Number: 2013-24030
Type: Rule
Date: 2013-10-31
Agency: Federal Aviation Administration, Department of Transportation
We are adopting a new airworthiness directive (AD) for certain Bell Model 407 helicopters. This AD requires installing a placard beneath the NR/NP dual tachometer and revising the limitations section of the rotorcraft flight manual (RFM). This AD was prompted by several incidents of third stage engine turbine wheel failures, which were caused by excessive vibrations at certain engine speeds during steady- state operations. These actions are intended to alert pilots to avoid certain engine speeds during steady-state operations, prevent failure of the third stage engine turbine, engine power loss, and subsequent loss of control of the helicopter.
Airworthiness Directives; Airbus Airplanes
Document Number: 2013-23905
Type: Rule
Date: 2013-10-31
Agency: Federal Aviation Administration, Department of Transportation
We are adopting a new airworthiness directive (AD) for all Airbus Model A318, A319, A320, and A321 series airplanes. This AD was prompted by a determination that certain special washers used in the bearing installation of the retraction jack anchorage fitting in the main landing gear (MLG) were incorrectly manufactured. This AD requires an inspection of the left-hand (LH) and right-hand (RH) bearing assemblies of the MLG retraction jack anchorage fitting to verify that the special washer is seated correctly, and related investigative and corrective actions if necessary. We are issuing this AD to detect and correct installation of incorrectly manufactured special washers, which could lead to a local stress concentration resulting in possible reduction of the fatigue life of the jack fitting, and consequent reduction of the structural integrity of the affected MLG.