Airworthiness Directives; Bell Helicopter Textron Canada Limited (Bell) Helicopters
type: Action
additional type: https://schema.org/LegalForceStatus
description: We are adopting a new airworthiness directive (AD) for certain Bell Model 206B and 206L helicopters. This AD requires installing a placard beneath the engine power dual tachometer and revising the operating limitations section of the rotorcraft flight manual (RFM). This AD was prompted by several incidents of third stage engine turbine wheel failures, which were caused by excessive vibrations at certain engine speeds during steady-state operations. These actions are intended to alert pilots to avoid certain engine speeds during steady- state operations, prevent failure of the third stage engine turbine, engine power loss, and subsequent loss of control of the helicopter.
date published: 2013-11-05
start time: 2013-12-10
agent: Federal Aviation Administration
  type: GovernmentOrganization
  parent organization: US Department of Transportation
object: Bell Helicopter Textron Canada Limited (Bell)
citation: DigitalDocument
license: https://creativecommons.org/publicdomain/zero/1.0/
source: https://www.federalregister.gov/documents/2013/11/05/2013-24037/airworthiness-directives-bell-helicopter-textron-canada-limited-bell-helicopters
source organization: US Federal Register
publisher: AI Analytics

PropertyValue
property ID: Federal Register Document Number
value: 2013-24037

PropertyValue
property ID: Federal Register Citation
value: 78 FR 66252

PropertyValue
property ID: FAA Docket
value: Docket No. FAA-2013-0488

AI Analytics
type: Organization