Airworthiness Directives; Pratt & Whitney (PW) PW4164, PW4168, and PW4168A Turbofan Engines
type: Action
additional type: https://schema.org/LegalForceStatus
description: The FAA is adopting a new airworthiness directive (AD) for PW PW4164, PW4168, and PW4168A turbofan engines with certain low pressure turbine (LPT) stage 4 disks, part number (P/N) 51N404, installed. This AD requires removing certain LPT stage 4 disks, listed by serial number at the next piece-part exposure or within 7,500 cycles-since-new (CSN). This AD results from a report of improperly manufactured LPT stage 4 disks. We are issuing this AD to prevent an uncontained engine failure due to low-cycle fatigue (LCF), which could result in damage to the airplane.
date published: 2008-01-03
start time: 2008-02-07
agent: Federal Aviation Administration
  type: GovernmentOrganization
  parent organization: US Department of Transportation
citation: DigitalDocument
license: https://creativecommons.org/publicdomain/zero/1.0/
source: https://www.federalregister.gov/documents/2008/01/03/E7-25505/airworthiness-directives-pratt-and-whitney-pw-pw4164-pw4168-and-pw4168a-turbofan-engines
source organization: US Federal Register
publisher: AI Analytics

PropertyValue
property ID: Federal Register Document Number
value: E7-25505

PropertyValue
property ID: Federal Register Citation
value: 73 FR 394

PropertyValue
property ID: FAA Docket
value: Docket No. FAA-2007-27230

AI Analytics
type: Organization