Federal Register Proposed Rules, Rules and Notices for September 25,2013

September 25,2013

PROPOSED RULES

Airworthiness Directives; BAE SYSTEMS (OPERATIONS) LIMITED Airplanes [FR DOC# 2013-23276] SUMMARY: We propose to adopt a new airworthiness directive (AD) for all BAE SYSTEMS (OPERATIONS) LIMITED Model BAe 146 series airplanes and Model Avro 146-RJ series airplanes. This proposed AD was prompted by reports of excess solder deposited during overhaul on the frangible plug of a fire extinguisher, which prevented the release of the extinguishant. This proposed AD would require a one-time inspection of
certain engine and auxiliary power unit (APU) fire extinguishers to determine if the fire extinguishers are affected by excessive solder and corrective actions if necessary. We are proposing this AD to prevent the failure of a fire extinguisher to discharge, which reduces the ability of the fire protection system to extinguish fires in the engine or APU fire zones, possibly resulting in damage to the airplane and injury to the passengers.
Airworthiness Directives; The Boeing Company Airplanes [FR DOC# 2013-23271] SUMMARY: We propose to supersede airworthiness directive (AD) 89-12-10, which applies to certain The Boeing Company Model 747 series airplanes. AD 89-12-10 currently requires replacement of certain underwing fuel tank access doors with stronger, fire-resistant doors. Since we issued AD 89-12-10, we have received reports indicating
that a standard access door was located where an impact-resistant access door was required, and stencils were missing from some impact-resistant access doors. Stencils are required to indicate that the door is impact-resistant and to indicate the correct location for installation of the impact- resistant door. This proposed AD would require an inspection of the left- and right-hand wing fuel tank access doors to determine whether impact-resistant access doors are installed in the correct locations, and replacement of any door with an impact-resistant access door if necessary. This proposed AD would also require an inspection for the presence of stencils and index markers on impact-resistant access doors, and application of new stencils or index markers if necessary. This proposed AD would also require revising the maintenance program to incorporate changes to the airworthiness limitations section. This proposed AD would also add airplanes to the applicability. We are proposing 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 or engine exhaust nozzle), consequently leading to a fuel-fed fire.

Airworthiness Directives; Bombardier, Inc. Airplanes [FR DOC# 2013-23335] SUMMARY: We propose to adopt a new airworthiness directive (AD) for certain Bombardier, Inc. Model BD-100-1A10 (Challenger 300) airplanes. This proposed AD was prompted by multiple reports of erratic electrical status indications on the push button annunciators and the engine instrument and crew alerting system. Certain of those reported incidents resulted in the airplane experiencing a momentary loss of electrical power and loss of flight displays. This proposed AD would require modification of the direct current power centers. We are proposing this AD to prevent loss of electrical power, which could result in the loss of flight displays and reduced controllability of the airplane.

Airworthiness Directives; ATR-GIE Avions de Transport Régional Airplanes [FR DOC# 2013-23315] SUMMARY: We propose to adopt a new airworthiness directive (AD) for certain ATR-GIE Avions de Transport R[eacute]gional Model ATR42 and Model ATR72 airplanes. This proposed AD was prompted by reports of defective sealing between the nacelle lower fairing and the underwing box. This proposed AD would require a one-time general visual inspection for damaged (worn, torn, or abraded) or missing seals between the nacelle lower fairing and the underwing box of both the left-hand and right-hand engine nacelles, and replacement of the seal and/or shims if necessary. We are proposing this AD to prevent the decrease of the fire extinguishing agent efficiency, which could delay fire extinction and allow fire propagation out of the nacelle fire protected area, resulting in damage to the airplane.

Airworthiness Directives; The Boeing Company Airplanes [FR DOC# 2013-23273] SUMMARY: We propose to adopt a new airworthiness directive (AD) for certain The Boeing Company Model 767-300 and 767-300F series airplanes. This proposed AD was prompted by reports of malfunctions in the flight deck display units resulting in blanking, blurring, or loss of color on the display. This proposed AD would require modification and
installation of components in the main equipment center. For certain other airplanes this proposed AD would require modification, replacement, and installation of flight deck air relief system (FDARS) components. We are proposing this AD to prevent malfunctions of the flight deck display units, which could affect the ability of the flightcrew to read the displays for airplane attitude, altitude, or airspeed, and consequently reduce the ability of the flightcrew to maintain control of the airplane.

Airworthiness Directives; Dassault Aviation Airplanes [FR DOC# 2013-23333] SUMMARY: We propose to adopt a new airworthiness directive (AD) for all Dassault Aviation Model FALCON 2000EX airplanes. This proposed AD was prompted by a revision to the airplane airworthiness limitations to introduce a corrosion prevention control program, among other changes, to the maintenance requirements and airworthiness limitations. This proposed AD would require revising the maintenance program to include the maintenance tasks and airworthiness limitations specified in the airworthiness limitations section of the airplane maintenance manual. We are proposing this AD to prevent reduced structural integrity of the airplane.

Airworthiness Directives; Airbus Airplanes [FR DOC# 2013-23269] SUMMARY: We propose to adopt a new airworthiness directive (AD) for all Airbus Model A318, A319, A320, and A321 series airplanes. This proposed AD was prompted by a report that an investigation showed that when a certain combination of a target/proximity sensor serial number is installed on a flap interconnecting strut, a “target FAR” signal cannot
be detected when it reaches the mechanical end stop of the interconnecting strut. This proposed AD would require an inspection to determine the part number (P/N) of the interconnecting struts installed on the wings, identifying the P/N and the serial number (S/N) of the associated target and proximity sensor if applicable, and replacing or re-identifying the flap interconnecting strut if applicable. We are proposing this AD to detect
and correct a latent failure of the flap down drive disconnection due to an already-failed interconnecting strut sensor, which could result in asymmetric flap panel movement and consequent loss of control of the airplane.

Airworthiness Directives; Airbus Airplanes [FR DOC# 2013-23324] SUMMARY: We propose to supersede airworthiness directive (AD) 2009-15- 17, which applied to certain Airbus Model A330-200 and -300; and Model A340-200 and -300 series airplanes. AD 2009-15-17 required an inspection for damage to the protective treatments or any corrosion of all main landing gear (MLG) bogie beams, and application of protective treatments if no damage or corrosion was found. If any damage or corrosion was found, corrective action followed by the application of protective treatments was required. Since we issued AD 2009-15-17, we received reports of thin paint coats and paint degradation on enhanced MLG bogie beams. This proposed AD would add repetitive detailed inspections of the MLG bogie beams. This proposed AD would also require modification of the MLG bogie beams, which would terminate the repetitive inspections for any modified bogie
beam. This proposed AD would also provide optional methods of compliance for inspections for corrosion, damage of the protective treatment, repair, and modification, of the MLG bogie beam. This proposed AD would also revise the applicability. We are proposing this AD to detect and correct damage or corrosion of the MLG bogie beams, which could cause a runway excursion event, bogie beam detachment from the airplane, or MLG collapse, which could result in damage to the airplane and injury to the occupants.

Airworthiness Directives; The Boeing Company Airplanes [FR DOC# 2013-23274] SUMMARY: We propose to supersede airworthiness directive (AD) 2013-07- 07, which applies to all The Boeing Company Model 737 -600, -700, -700C, -800, -900, and -900ER series airplanes. AD 2013-07-07 requires inspecting to determine the part number of the attach pins of the horizontal stabilizer rear spar, and replacing certain attach pins. Since we issued AD 2013-07-07, we received inquiries from affected operators regarding the parts
installation limitation and prohibition, and re-installation of certain attach pins that were removed for inspection. This proposed AD would clarify the parts installation limitation and prohibition, and would add a new requirement for certain airplanes on which certain attach pins were installed. We are proposing this AD to prevent premature failure of the attach pins, which could cause reduced structural integrity of the horizontal stabilizer to fuselage attachment, resulting in loss of control of the airplane.

RULES

Airworthiness Directives; Agusta S.p.A. (Type Certificate Currently Held by Agusta Westland S.p.A) (Agusta) Helicopters [FR DOC# 2013-23017] SUMMARY: We are superseding an airworthiness directive (AD) for Agusta Model A109E helicopters that required reducing the tail rotor (T/R) blade life limit, modifying a T/R hub and grip assembly, re-identifying two T/R assemblies, clarifying the never-exceed speed (Vne) limitation, and reducing the inspection interval. Since we issued that AD, the manufacturer has redesigned a T/R grip bushing (bushing) that reduces the loads, which caused the T/R cracking, on the T/R blades. This action requires installing the new bushing and re-identifying the T/R hub-and-grip and hub-and-blade assembliesand requires a recurring inspection of each bushing. These actions are intended to prevent fatigue failure of a
T/R blade and subsequent loss of control of the helicopter.

Airworthiness Directives; GA 8 Airvan (Pty) Ltd Airplanes [FR DOC# 2013-22978] SUMMARY: We are adopting a new airworthiness directive (AD) for GA 8 Airvan (Pty) Ltd Models GA8 and GA8-TC320 airplanes. This AD results from mandatory continuing airworthiness information (MCAI) issued by the aviation authority of another country to identify and correct an unsafe condition on an aviation product. The MCAI describes the
unsafe condition as the fuel system integral sump tank does not meet FAA regulations. We are issuing this AD to require actions to address the unsafe condition on these products.

Airworthiness Directives; PILATUS AIRCRAFT LTD. Airplanes [FR DOC# 2013-22980] SUMMARY: We are adopting a new airworthiness directive (AD) for PILATUSAIRCRAFT LTD. Model PC-12/47E airplanes. This 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 common grounding of both the pilot primary flight display (PFD) and the Electronic Standby Instrument System (ESIS). If the common ground fails both navigations systems could fail simultaneously, which could result in loss of control. We are issuing this AD to require actions to address the unsafe condition on these products.

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