14910-I3-Pj

DEPARTMENT OF TRANSPORT AnON ONCURRliNCF..o; ><OUT,NGsy",OOL Federal Aviation Administration 14 CFR Part 39 

## ()iO{ IDockct No. FAA-20IO-H"'; Directorate Identifier 2010-NM-017-ADj RIN 2120-AA64 Ainvorthiness Directives; Fokker Services B.V. Model F.28 Mark 0100 Airplanes AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Notice ofproposed rulcmaking (NPRM). SUMMARY: We propose to adopt a new airworthiness directive (AD) for the products listed above that would supersede an existing AD. This proposed AD results from mandatory continuing airworthiness information (MeAf) originated byan aviation authority of another country to identify and correct an unsafe condition on an aviation product. The MeAl describes the unsafe conditirn as: Two reports have been received where, ~uring inspection ofthe vertical stabilizer ofF28 Mark 0100 aeroplanes, one of the bolts that connect the horizontal stabilizer control unit actuator with the dog-links was found broken (one on the nut side & one on the head side). In both occasions, the bolt shaft was still present in the connection and therefore the horizontal

.stabilizer function was not affected. If a single dog-link connection fails, the complete stabilizer load is taken up by the remaining dog-link connection. 

## * * * I To address and correct this unsafe condition EASA [European Aviation Safety Agency] issued AD 2007-0287 [cprresponding FAA AD 2008-22- 14] that required a one-time inspection of the affected bolts, 

## * * * and , replacement of failed bolts with serviceable parts. EASA AD 2007-0287 also required the installation of a tie -wrapthrough the lower bolts ofthe horizontal stabilizer control unit, to keep the bolt in place in the event of a bolt head failure. 

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# . [491ll-I3'f] DEPARTMENTOFTRANSI'ORTATION Federal AviatiOD Administration 14eFR Part-39 -L 

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### o,.~*"**;Directorate-Identifi~r 201D-NM-017-ADj R1N 212lhAA64 Airn'orthiness -Direqivts;_~okkeiServiceS ~.V ~-~odclF.28 'Mar!L01OO Allv.1anes AGENCY:FederalAvi,aticilt~&r~Qn;~1. DOT, ACTION:.Noticeofp",~~.iroJemaking 

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v~?n " .' '2907-U2.87J~b". ,.n~ingF~AD 2QQ.~22- 14] thatreq '~-. ~~'~QO-e(pected'i?Rlts, *'.~ .~.~~. replacement 9H'i' '_-.Its 'w1fb~ S:.eTVi~lq parts. £AS" <AD2007.;QZ81 alsorequirel:i

tbe.~tion.dfa iie~~ throughthe-1o\\'erbolts oftbe horizontal stabilizei-~D,tr61 w;rit, to keep"th'ebolt in plaCe in the event of a bolt head failure. 

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• .'auld superseae·-an exIsting AD. This proposC3 AD f.CSW,1s from 

# I '. mandatory continuing aipN~:inmpess_ inwrmation (MeAl) ori~~te<!: 'Qy-an aviation



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FAA Form 1350-14.1 (6-89) 0fffClAl. AlE copy