This amendment adopts a new airworthiness directive (AD) that is
[[Page 24871]]
applicable to certain Learjet Model 45 airplanes. This action requires revising the Airplane Flight Manual to provide the flight crew with certain instructions associated with an exterior preflight inspection and ground operations. This amendment is prompted by a report

DEPARTMENT OF TRANSPORTATION : Federal Aviation Administration

This document corrects information in an existing airworthiness directive (AD) that applies to certain Boeing Model 727 series airplanes. That AD supersedes an earlier airworthiness directive to require repetitive inspections to detect cracking of the rear spar web or fuel leakage of the wing center section; repair, if necessary; and modification

DEPARTMENT OF TRANSPORTATION : Federal Aviation Administration

This amendment adopts a new airworthiness directive (AD), applicable to certain Boeing Model 747 and 767 series airplanes, that requires repetitive functional tests of the directional pilot valve (DPV) of the thrust reversers to detect pneumatic leakage, and corrective action, if necessary. This amendment is prompted by a report of a latent

DEPARTMENT OF TRANSPORTATION : Federal Aviation Administration

This amendment adopts a new airworthiness directive (AD) for MD Helicopters Inc. (MDHI) Model MD900 helicopters. This action requires visually inspecting the drive shaft to determine the assembly part number
(P/N) and marking the drive shaft assembly P/N and serial number (S/N) on any unmarked drive shaft. This AD also requires creating a

DEPARTMENT OF TRANSPORTATION : Federal Aviation Administration

This amendment adopts a new airworthiness directive (AD), applicable to certain Boeing Model 767200, 300, and 300F series airplanes. This AD requires either an inspection to detect damage or chafing of the insulation or wires, modification of the cable assembly, and repairs, if necessary; or replacement of the cable assembly of the lower

DEPARTMENT OF TRANSPORTATION : Federal Aviation Administration

This amendment supersedes an existing airworthiness directive (AD) that applies to Schweizer Aircraft Corporation (Schweizer) Model 269A, 269A1, 269B, 269C, 269C1, 269D helicopters. That AD requires inspecting the tail rotor swashplate shaft (shaft) nut for looseness and, if loose, inspecting the shaft for proper size; subsequently inspecting the

DEPARTMENT OF TRANSPORTATION : Federal Aviation Administration

This document proposes the adoption of a new airworthiness directive (AD) for Bell Helicopter Textron Canada (BHTC) Model 430 helicopters. This proposal would require modifying the electrical system. This proposal is prompted by the loss of electrical power due to design deficiencies discovered during singlepilot Instrument Flight Rules (IFR)

DEPARTMENT OF TRANSPORTATION : Federal Aviation Administration

This document proposes the supersedure of an existing airworthiness directive (AD), applicable to certain Airbus Model A310 and A300600 series airplanes, that currently requires wiring modifications to the engine and auxiliary power unit (APU) fire detection system. This action would require new wiring modifications for the engine and APU fire

DEPARTMENT OF TRANSPORTATION : Federal Aviation Administration

This amendment adopts a new airworthiness directive (AD), applicable to all Dassault Model Falcon 2000, MystereFalcon 900, Falcon 900EX, Fan Jet Falcon, MystereFalcon 50, MystereFalcon 20, MystereFalcon 200, and Falcon 10 series airplanes, that requires repetitive tests and inspections to detect discrepancies of the overwing emergency exit; and

DEPARTMENT OF TRANSPORTATION : Federal Aviation Administration

This document proposes the supersedure of an existing airworthiness directive (AD), applicable to certain McDonnell Douglas Model MD11 series airplanes, that currently requires deactivation of the forward and center cargo control units (CCU). That AD was prompted by a report of failure of a CCU, which produced overheating of the electrical pins

DEPARTMENT OF TRANSPORTATION : Treasury Department

This amendment adopts a new airworthiness directive (AD) that is applicable to General Electric Company (GE) Models CF680C2A1/A2/A3/ A5/A5F/A8/D1F turbofan engines. This AD requires initial and repetitive visual inspections of left hand and right hand aft engine mount link assemblies for separations, cracks and spherical bearing race migration.

DEPARTMENT OF TRANSPORTATION : Federal Aviation Administration

This document adopts a new airworthiness directive (AD) that applies to all The New Piper Aircraft, Inc. (Piper) PA42 series airplanes that are equipped with pneumatic deicing boots. This AD requires you to revise the Airplane Flight Manual (AFM) to include requirements for activation of the airframe pneumatic deicing boots. This AD is the result

DEPARTMENT OF TRANSPORTATION : Federal Aviation Administration

This amendment adopts a new airworthiness directive (AD) that is applicable to certain Pratt & Whitney (PW) PW4000 turbofan engines with the current design low pressure turbine (LPT) 4th stage air seal installed. This action requires, based on engine model, replacement of the current design seal with a new design seal, or with a modified seal.

DEPARTMENT OF TRANSPORTATION : Federal Aviation Administration

This amendment supersedes an existing airworthiness directive (AD), applicable to all Dornier Model 328100 series airplanes, that currently requires revising the Airplane Flight Manual (AFM) to provide the flightcrew with additional information regarding procedures to ensure complete pressurization of the hydraulic lines for the flaps. This

DEPARTMENT OF TRANSPORTATION : Federal Aviation Administration

This amendment supersedes an existing airworthiness directive (AD), applicable to certain Saab Model SAAB SF340A and SAAB 340B series airplanes, that currently requires inspections to detect damage or cracking of the forward and aft attachment lugs of the flap fittings at wing station (WS) 123.38; an inspection to verify that the sizes of the

DEPARTMENT OF TRANSPORTATION : Federal Aviation Administration

This amendment adopts a new airworthiness directive (AD), applicable to all British Aerospace Model BAC 111 401/AK and 410/AQ airplanes, that requires replacement of certain landing gear brake accumulators with improved accumulators. The actions specified by this AD are intended to prevent loss of hydraulic pressure and possible structural damage

DEPARTMENT OF TRANSPORTATION : Federal Aviation Administration

This amendment adopts a new airworthiness directive (AD), applicable to certain Learjet Model 45 series airplanes, that requires repetitive application of grease to the rotating disk assembly of the nose landing gear squat switch mechanism. Application of grease to the squat switch assembly is necessary to prevent moisture contamination and

DEPARTMENT OF TRANSPORTATION : Federal Aviation Administration

This amendment adopts a new airworthiness directive (AD), applicable to all British Aerospace BAe Model ATP airplanes. This action requires repetitive inspections to detect damage of the torque link apex joint of the leftand righthand main landing gear (MLG); and replacement of nuts, pins, and bolts with new parts, if necessary. This action is

DEPARTMENT OF TRANSPORTATION : Federal Aviation Administration

This amendment adopts a new airworthiness directive (AD), applicable to certain Boeing Model 757 series airplanes, that requires modification of the nacelle strut and wing structure. This amendment is prompted by reports indicating that the actual operational loads applied to the nacelle are higher than the analytical loads that were used during

DEPARTMENT OF TRANSPORTATION : Federal Aviation Administration

This document proposes to adopt a new airworthiness directive (AD) that would apply to certain Raytheon Aircraft Company (Raytheon) Beech Models A36, B36TC, and 58 airplanes. The proposed AD would require you to inspect for missing rivets on the right hand side of the fuselage and, if necessary, install rivets. Raytheon has identified several

DEPARTMENT OF TRANSPORTATION : Federal Aviation Administration

This document proposes the adoption of a new airworthiness directive (AD) that is applicable to RollsRoyce, plc Tay 65015 and 65154 turbofan engines. This proposal would require initial and repetitive visual and ultrasonic inspections of fan blades for cracks, and, if necessary, replacement with serviceable parts. In addition, this AD requires

DEPARTMENT OF TRANSPORTATION : Federal Aviation Administration

This document proposes to adopt a new airworthiness directive (AD) that would apply to certain Raytheon Aircraft Company (Raytheon) Beech Model 58 airplanes. The proposed AD would require you to inspect the rudder bellcrank interconnect tube for damage; replace or refinish the interconnect tube, if necessary; and modify the floorboard. Four

DEPARTMENT OF TRANSPORTATION : Federal Aviation Administration

This document proposes the adoption of a new airworthiness directive (AD) that is applicable to all Lockheed Model 188A and 188C series airplanes. This proposal would require a revision of the Airplane Flight Manual (AFM) to add procedures for donning the flightcrew oxygen masks when the cabin altitude warning horn is activated. This action is

DEPARTMENT OF TRANSPORTATION : Federal Aviation Administration

This document proposes the supersedure of an existing airworthiness directive (AD), applicable to all Boeing Model 777 series airplanes, that currently requires repetitive testing of the engine fire shutoff switch (EFSS) to determine if the override mechanism and the switch handle are operational, and replacement of the EFSS, if necessary. That AD

DEPARTMENT OF TRANSPORTATION : Federal Aviation Administration

This amendment supersedes an existing airworthiness directive (AD), applicable to certain Boeing Model 747100, 200, 300, 747SR, and 747SP series airplanes, that currently requires a onetime inspection to detect cracking of the longeron splice fittings at stringer 11, on the left and right sides at body station 2598, and replacement of any cracked

DEPARTMENT OF TRANSPORTATION : Federal Aviation Administration