Airworthiness Directives; Sikorsky Aircraft-Manufactured Model S-64F Helicopters
type: Action
additional type: https://schema.org/LegalForceStatus
description: We are adopting a new airworthiness directive (AD) for Sikorsky Aircraft Corporation-manufactured Model S-64F helicopters, now under the Erickson Air-Crane Incorporated (Erickson) Model S-64F type certificate. This AD supersedes an existing AD which requires inspections, rework, and replacement, if necessary, of the main gearbox (MGB) second stage lower planetary plate (plate). Since we issued that AD, the manufacturer has conducted a configuration review and analysis, and a review of the service history of certain components. The actions of this AD are intended to establish life limits for certain components, remove various parts from service, and require consistency in the part numbers of certain four bladed tail rotor (T/R) assemblies to prevent fatigue cracking, failure from static overload, and subsequent loss of control of the helicopter.
date published: 2013-03-12
start time: 2013-04-16
agent: Federal Aviation Administration
  type: GovernmentOrganization
  parent organization: US Department of Transportation
object: Sikorsky
citation: DigitalDocument
license: https://creativecommons.org/publicdomain/zero/1.0/
source: https://www.federalregister.gov/documents/2013/03/12/2013-05503/airworthiness-directives-sikorsky-aircraft-manufactured-model-s-64f-helicopters
source organization: US Federal Register
publisher: AI Analytics

PropertyValue
property ID: Federal Register Document Number
value: 2013-05503

PropertyValue
property ID: Federal Register Citation
value: 78 FR 15599

PropertyValue
property ID: FAA Docket
value: Docket No. FAA-2012-0689

AI Analytics
type: Organization