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DEPARTMENT OF TRANSPORT AnON ONCURRliNCF..o;

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Federal Aviation Administration

14 CFR Part 39

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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 of proposed 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 by an 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 of the 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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DEPARTMENTOF TRANSI'ORTATION

Federal AviatiOD Administration

14eFR Part-39

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(Docket.No. F AA-i:Ol o,.~*"**;Directorate-Identifi~r 201D-NM-017-ADj

R1N 212lhAA64

Airn'orthiness -Direqivts;_~okkeiServiceS ~.V ~-~odclF.28 'Mar!L01OOAllv.1anes

AGENCY:FederalAvi,aticilt~&r~Qn;~1. DOT,

ACTION:.Noticeofp",~~.iroJemaking lNP~1

smiMARv: We pro~se-tQ ·acloPt.a:new-~rtrnlessdir¢tiy¢{ADl for the produ ~.~~

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!s;~safeJc_on~j~oE!KS_~,iJ,!~ro~taD.f.. 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

also requirel:itbe.~tion.dfa iie~~ through the-1o\\'er bolts oftbe

horizontal stabilizei-~D,tr61 w;rit, to keep" th'e bolt in plaCe in the event of a

bolt head failure. I

[fwo.rep6J;ts hav,e:o~

st~DiJize(oi<,F:2 '" ., ... , •...

horizontaLstaoi

btoken "(one on,t

boit.~tiaft.~~ti

stabilizerfund.i6

tlie'cOriipl:et~:~;.~_

connection, *.~-.

listed above that "'•.'auld superseae·-an exIsting AD. This proposC3 AD f.CSW,1sfrom

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mandatory continuing aipN~:inmpess_inwrmation (MeAl) ori~~te<!: 'Qy-an aviation

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authority of ailOtlier cQunti)r toiid~tif¥_an4 co~t an unsafe condition on an aviatIon-.c - • ~ - 1

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'f·, "product.TheMQXL_d~~'~~~1Jn~f¢ c\?hdi}iOll - "fiC- ..,

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