Proposed Establishment of Class E Airspace; Edgeley, ND
This action proposes to establish Class E airspace at Edgeley, ND. Controlled airspace is necessary to accommodate new Standard Instrument Approach Procedures (SIAP) at Edgeley Municipal Airport. The FAA is taking this action to enhance the safety and management of Instrument Flight Rules (IFR) operations for SIAPs at the airport.
Airworthiness Directives; Various Sikorsky-Manufactured Transport and Restricted Category Helicopters
We are revising an earlier proposed airworthiness directive (AD) for certain Sikorsky Aircraft Corporation (Sikorsky) Model S-61A, D, E, L, N, NM (serial number 61454), R, and V; Croman Corporation Model SH-3H, Carson Helicopters, Inc., Model S-61L; Glacier Helicopters, Inc. Model CH-3E; Robinson Air Crane, Inc. Model CH-3E, CH-3C, HH-3C, and HH-3E; and Siller Helicopters Model CH-3E and SH-3A helicopters. This SNPRM is prompted by comments received in response to a previous SNPRM and a reevaluation of the relevant data. This SNPRM retains the proposed actions in the previous SNPRM, provides an increased estimated cost of the main rotor shaft (MRS) replacement, and clarifies some of the language in the Required Actions section of the AD. The proposed actions are intended to prevent MRS structural failure, loss of power to the main rotor, and subsequent loss of control of the helicopter.