Airworthiness Directives; The Boeing Company Model 737-600, -700, -700C, -800, and -900 Series Airplanes
type: Action
additional type: https://schema.org/LegalForceStatus
description: We are superseding an existing airworthiness directive (AD) for the products listed above. That AD currently requires replacement of the power control relays in the P91 and P92 power distribution panels for the fuel boost and override pumps with new, improved relays having a ground fault interrupter (GFI) feature, or installation and maintenance of universal fault interrupters (UFIs) using a certain supplemental type certificate. This new AD continues to require the actions of the existing AD and also specifies which relays may be replaced by GFIs or UFIs. This AD was prompted by a need to clarify which relays may be replaced by installation of UFIs. We are issuing this AD to prevent pump housing burn-through due to electrical arcing, which could create a potential ignition source inside a fuel tank. This condition, in combination with flammable fuel vapors, could result in a fuel tank explosion and consequent loss of the airplane.
date published: 2011-09-30
start time: 2011-11-04
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/2011/09/30/2011-24746/airworthiness-directives-the-boeing-company-model-737-600--700--700c--800-and--900-series-airplanes
source organization: US Federal Register
publisher: AI Analytics

PropertyValue
property ID: Federal Register Document Number
value: 2011-24746

PropertyValue
property ID: Federal Register Citation
value: 76 FR 60710

PropertyValue
property ID: FAA Docket
value: Docket No. FAA-2010-1199

AI Analytics
type: Organization