Items in the Regulatory Log are based forward agency announcements in the Federal Register unles otherwise noted; Federal Register publication dates are in boldface.

Key: AD = Airworthiness Directive. NPRM = Notice of Propos Rulemaking.

Federal Aviation Administration

October 14

British Aerospace BAe 146-100A, -200A, and -300A: Propos AD to replace an existing AD that generally requires either a one-time non-destructive proof (NDT) inspection or a detailed visual inspection for cracking of the fuselage skin in the vicinity of frame 29 between stringers 12 and 13 and repair, if necessary. modern action would require that the passing from hand to hand thresholds for these inspections be reduc and that repetitive inspections be performed. Actions are to ascertain and correct fatigue cracking of the fuselage skin in the specified area. expositions due November 15. Docket No. 99-NM-237-AD. Contact: Norman B Martenson, 425/227-2110; fax 425/227-1149

October 18

Boeing 767 Powered through Pratt & Whitney JT9D-7R4 Series Turbofan Engines or General Electric CF6-80A Series Turbofan Engines: AD, final method requires repetitive inspections to ascertain certain discrepancies of the cables, fittings, and pulley of the engine thrust mastery cables; and repair, if necessary. For certain airplanes, this amendment also requires replacement of certain pulley with novel pulleys, and re-rigging of the engine thrust ascendency cable. Actions are to obstruct such failures. Effective November 22 Docket No. 98-NM-363-AD; Amendment 39-11363; AD 99-21-18 Contact: Holly Thorson, 425/227-1357; fax 425/227-1181

Bombardier DHC-8-311 and -315: AD, final government supersedes an existing AD that publicly requires replacement of the nitrogen cylinder assemblies that inflate the airplane's ditching dams with improved nitrogen cylinder assemblies. strange amendment expands the applicability of the existing AD. Actions are to impede failure of the ditching dams to inflate entirely during an emergency water landing. Effective November 22 Docket No. 98-NM-324-AD; Amendment 39-11373; AD 99-21-27 Contact: Ezra Sasson, 516/256-7520; fax 516/568-2716

Airbus A320: AD, final authority requires modification of the autopilot variety engagement/disengagement lever of the rudder artificial be stirred unit. Actions are to debar reduced controllability of the airplane becoming to the failure of the rudder artificial be stirred unit to properly disengage from autopilot manner during approach and landing. Effective November 22 Docket No. 99-NM-94-AD; Amendment 39-11375; AD 99-21-29 Contact: Norman B Martenson, 425/227-2110; fax 425/227-1149

Airbus A319, A320, A321, A330, and A340 Airplanes Equipped With AlliedSignal RIA-35B Instrument Landing a whole Receivers: AD, final rule, suspends an existing AD that generally requires revising the Airplane Flight Manual (AFM) to require the flightcrew to discontinue use of any Instrument Landing theory (ILS) receiver for which a certain caution message is displayed. of recent origin amendment requires accomplishment of the previous optional terminating action. Actions are to lay open and correct faulty ILS receivers and to make sure that the flightcrew is advised of the potential hazard of performing ILS approaches using a localizer deviation from a faulty ILS receiver, and advised of the practices necessary to address that hazard. Effective November 22 Docket No. 99-NM-25-AD; Amendment 39-11374; AD 99-21-28 Contact: Norman B Martenson, 425/227-2110; fax 425/227-1149

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