Airworthiness directives › 2012-06-06
AD 2012-06-06 Airworthiness Directives; The Boeing Company Airplanes
Models named: 757-200, -200PF, -200CB, -300 series, -200CB series, 757-300 series. Read the applicability below — it usually turns on serial or part numbers too.
Applicability*9
This AD applies to The Boeing Company Model 757-200, -200PF, -200CB, and -300 series airplanes, certificated in any category; as identified in the applicable service bulletin specified in paragraph (c)(1) or (c)(2) of this AD. (1) For Model 757-200, -200PF, and -200CB series airplanes: Boeing Service Bulletin 757-28A0078, Revision 2, dated January 11, 2012. (2) For Model 757-300 series airplanes: Boeing Service Bulletin 757-28A0079, Revision 2, dated January 11, 2012.
Compliance
Comply with this AD within the compliance times specified, unless already done.
Required actions
For airplanes on which the actions specified in Boeing Alert Service Bulletin 757-28A0078, dated July 16, 2008, or 757-28A0079, dated July 16, 2008, have not been accomplished before the effective date of this AD: Within 60 months after the effective date of this AD, do the actions specified in paragraphs (g)(1) and (g)(2) of this AD. (1) Replace the power control relays for the main tank fuel boost pumps with new relays having a ground fault interrupter (GFI) feature; do applicable electrical bonding resistance measurements between the GFI relays and their installation panel to verify that applicable bonding requirements are met; and do an operational test to ensure correct operation; as specified in Boeing Service Bulletin 757-28A0078, Revision 2, dated January 11, 2012 (for Model 757-200, -200CB, and -200PF series airplanes); or Boeing Service Bulletin 757-28A0079, Revision 2, dated January 11, 2012 (for Model 757-300 series airplanes). Do all actions in accordance with Part 1 of the Accomplishment Instructions of Boeing Service Bulletin 757-28A0078, Revision 2, dated January 11, 2012 (for Model 757-200, -200CB, and -200PF series airplanes); or Boeing Service Bulletin 757-28A0079, Revision 2, dated January 11, 2012 (for Model 757-300 series airplanes). (2) Replace the power control relays for the center tank override fuel boost pumps with new relays having a GFI feature, in accordance with the actions required in paragraph (g)(2)(i) or (g)(2)(ii) of this AD. (i) Replace the power control relays with new relays having a GFI feature; do applicable electrical bonding resistance measurements between the GFI relays and their installation panel to verify that applicable bonding requirements are met; and do an operational test to ensure correct operation; as specified in Boeing Service Bulletin 757-28A0078, Revision 2, dated January 11, 2012 (for Model 757-200, -200CB, and -200PF series airplanes); or Boeing Service Bulletin 757-28A0079, Revision 2, dated January 11, 2012 (for Model 757-300 series airplanes). Do all actions in accordance with Part 1 of the Accomplishment Instructions of Boeing Service Bulletin 757-28A0078, Revision 2, dated January 11, 2012 (for Model 757-200, -200CB, and -200PF series airplanes), or Boeing Service Bulletin 757-28A0079, Revision 2, dated January 11, 2012 (for Model 757-300 series airplanes). (ii) Install and maintain TDG Aerospace universal fault interrupters (UFIs), in accordance with a method approved by the Manager, Seattle Aircraft Certification Office (ACO), FAA. Note 1 to paragraph (g)(2)(ii) of this AD: Guidance on installing TDG Aerospace UFIs can be found in Supplemental Type Certificate ST01950LA ( http://rgl.faa.gov/Regulatory_and_Guidance_Library/rgSTC.nsf/0/196ec7e864607b5b862573c5007cb3b5/$FILE/ST01950LA.pdf ).
Unsafe condition
This AD was prompted by fuel system reviews conducted by the manufacturer. We are issuing this AD to prevent damage to the fuel pumps caused by electrical arcing that could introduce an ignition source in the fuel tank, which, in combination with flammable fuel vapors, could result in a fuel tank explosion and consequent loss of the airplane.
Affected ADs
None.
Read the original on the Federal Register →
You just looked this one up by hand
TrackAD holds all 12,278 of them and matches them against the aircraft you actually look after — airframe, engine, propeller and appliances in one pass — then works out what falls due and when.
- Bring your existing list in from a spreadsheet Paste the rows straight out of Excel. Headers like C/W Date and N/A are read for you.
- A copy that works when this does not One file. No internet, no login, no this software running. For the morning something has to be produced and the computer is not cooperating.
- $5 a month, or $50 a year Up to 50 aircraft on either.
Look round a real shop first Start free
The demonstration shop is eleven real aircraft with a year of work behind them. No account needed.
The directive text above is reproduced from the Federal Register, a work of the United States government and in the public domain. The separation into applicability, compliance and required actions is TrackAD's.*1