Airworthiness directives › 2011-25-05
AD 2011-25-05 Airworthiness Directives; The Boeing Company Airplanes
Models named: 767-200, -300, -300F, -400ER series. Read the applicability below — it usually turns on serial or part numbers too.
Applicability*9
This AD applies to The Boeing Company Model 767-200, -300, -300F, and -400ER series airplanes, certificated in any category; as identified in Boeing Service Bulletin 767-28A0085, Revision 2, dated August 19, 2010. Note 1: This AD requires revisions to certain operator maintenance documents to include new inspections. Compliance with these inspections is required by 14 CFR 91.403(c). For airplanes that have been previously modified, altered, or repaired in the areas addressed by these inspections, the operator may not be able to accomplish the inspections described in the revisions. In this situation, to comply with 14 CFR 91.403(c), the operator must request approval for an alternative method of compliance (AMOC) according to paragraph (o) of this AD. The request should include a description of changes to the required inspections that will ensure the continued operational safety of the airplane.
Compliance
Comply with this AD within the compliance times specified, unless already done.
Required actions
For airplanes on which a dual crossfeed valve has been installed as specified in Boeing Service Bulletin 767-28-0034 as of the effective date of this AD: Within 60 months after the effective date of this AD, install ground fault interrupt relays (P140 and P141 panel assemblies) and all applicable parts and components in the main equipment center or in the forward cargo compartment sidewall, as applicable, and remove the fuel boost pump control relays from the P33, P36, and P37 panels, in accordance with the Accomplishment Instructions of Boeing Service Bulletin 767-28A0085, Revision 2, dated August 19, 2010, except as required by paragraph (i) of this AD.
Unsafe condition
This AD results from fuel system reviews conducted by the manufacturer. We are issuing this AD to prevent possible sources of ignition in a fuel tank caused by electrical fault or uncommanded dry operation of the main tank boost pumps and center auxiliary tank override and jettison pumps. An ignition source in the fuel tank could result in a fire or an explosion and consequent loss of the airplane.
Affected ADs
None.
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