Federal Aviation Administration September 13, 2018 – Federal Register Recent Federal Regulation Documents

This action removes Class E airspace extending upward from 1,200 feet above the surface at Crows Landing Airport, Crows Landing, CA. This airspace is wholly contained within the Sacramento en route airspace area and duplication is not necessary.

We are superseding Airworthiness Directive (AD) 2016-13-06, which applied to certain Saab AB, Saab Aeronautics Model 340A (SAAB/ SF340A) and SAAB 340B airplanes. AD 2016-13-06 required a revision of the applicable airplane flight manual (AFM), repetitive inspections of the horizontal stabilizer de-icing boots, and applicable corrective actions. This AD continues to require a revision of the applicable AFM, repetitive inspections of the horizontal stabilizer de-icing boots, and applicable corrective actions. This AD also requires replacement of single stitched de-icing boots with improved double stitched boots, and re-identification of the modified horizontal stabilizer leading edge. This AD was prompted by reports of ruptured horizontal stabilizer de- icing boots. We are issuing this AD to address the unsafe condition on these products.

We propose to supersede Airworthiness Directive (AD) 97-26-03 for Eurocopter Deutschland GmbH Model MBB-BK 117 A-1, MBB-BK 117 A-3, MBB-BK 117 A-4, MBB-BK 117 B-1, MBB-BK 117 B-2, and MBB-BK 117 C-1 helicopters. AD 97-26-03 requires visual inspections for cracks in the ribbed area of the main rotor (M/R) mast flange (flange). Since we issued AD 97-26-03, we have determined that a certain reinforced M/R mast is not affected by the unsafe condition. This proposed AD would retain the requirements of AD 97-26-03 and would remove a certain M/R mast from the applicability. The actions of this proposed AD are intended to address an unsafe condition on these products.

We propose to supersede Airworthiness Directive (AD) 2012-25- 02, which applies to certain Bombardier, Inc. Model CL-600-2B19 (Regional Jet Series 100 & 440) airplanes. AD 2012-25-02 requires revising the airworthiness limitations section (AWL) of the instructions for continued airworthiness (ICA) of the maintenance requirements manual by incorporating new procedures for repetitive inspections for cracking of the rear pressure bulkhead (RPB). AD 2012- 25-02 also requires revising the maintenance program to incorporate a revised task which requires an improved non-destructive inspection procedure. Since we issued AD 2012-25-02, additional in-service crack findings resulted in the development of a structural modification to the RPB. This proposed AD would mandate modification of the RPB and would add repetitive inspections for cracking of the RPB web, which would terminate certain actions in this proposed AD. We are proposing this AD to address the unsafe condition on these products.

This action proposes to modify Class E airspace extending upward from 1,200 feet above the surface at Badami Airport, AK. This proposal would add exclusionary language to the legal description of the airport to ensure the safety and management of aircraft within the National Airspace System. Also, the geographic coordinates of the airport would be adjusted.

This action proposes to modify Class E airspace extending upward from 1,200 feet above the surface at Atqasuk Edward Burnell Sr. Memorial Airport, Atqasuk, AK. This proposal would add exclusionary language to the legal description of the airport to ensure the safety and management of aircraft within the National Airspace System. Also, the geographic coordinates of the airport would be adjusted.

This action establishes Class E airspace extending upward from 700 feet above the surface, at Washington Island Airport, Washington Island, WI. Controlled airspace is necessary to accommodate new standard instrument approach procedures developed at Washington Island Airport, for the safety and management of instrument flight rules (IFR) operations.

We are adopting a new airworthiness directive (AD) for all The Boeing Company Model 737-100, -200, -200C, -300, -400, and -500 series airplanes. This AD was prompted by reports of cracking in certain flanges, and the adjacent web, of the wing outboard flap track at certain positions, and a determination that new inspections of certain flap track flanges and webs forward of the rear spar attachment are necessary. This AD requires an inspection to determine the part number of the wing outboard flap track assembly; repetitive inspections of each affected wing outboard flap track for discrepancies, and applicable on-condition actions; and repetitive overhaul of each wing outboard flap track. We are issuing this AD to address the unsafe condition on these products.