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1、NOTICEOFINCHPOUNDREINSTATEMENTMIL-C-83409NOTICE33August1999SUPERSEDINGNOTICE215May1999MILITARYSPECIFICATIONCOATINGS,VISOR,POLYCARBONATE,FLYINGHELMETMIL-C-83409,includingAmendment1,dated14March1986,areherebyreinstatedandmaybeusedforacquisition.Custodi
2、ans:PreparingActivity:AirForce-11DLA-CT(Project8415-0172)Reviewactivities:AirForce82,99AMSCN/AFSC8415DISTRIBUTIONSTATEMENTA.Approvedforpublicrelease;distributionisunlimited.标准分享网www.bzfxw.com免费下载NOTICEOFINCH-POUNDCANCELATIONMIL-C-83409NOTICE215May199
3、9MILITARYSPECIFICATIONCOATINGS,VISOR,POLYCARBONATE,FLYINGHELMETMIL-C-83409,includingAmendment1,dated14March1986,isherebycanceledwithoutreplacement.Custodians:Preparingactivity:AirForce-11DLA-CTReviewactivities:AirForce-11,82,99AMSCN/AFSC8415DISTRIBUT
4、IONSTATEMENTA:Approvedforpublicrelease;distributionisunlimited.MIL-C-83409(USAF)AMENDMENT-15February1974MILITARYSPECIFICATIONCOATINGS,VISOR,POLYCARBONATE,FLYINGHELMETThisamendmentformsapartofMilitarySpeci-ficationMIL-C-83409(USAF)dated9February1973.P
5、age2,paragraph3.5:Deleteandsubstitute:“3.5.Performance.ThecoatedvisorshallmeettheopticalrequirementsofMIL-V-43511,paragraphs3.4.1through3.4.8”.Page2,paragraph3.6.1:Deleteandsubstitute:“3.6.1Abrasionresistance.Afterbeingsubjectedtotheabrasiontestsinac
6、cordancewithSeaction4,theincreaseinhazeshallnotexceed6percentandthedecreaseintransmittanceshallnotexceed4percent.”.Page3,paragraph4.2.2:Deletethelastsentenceandsubstitute:“TheabrasiontestwillbeperformedinaccordancewithMethod1092ofFed-STD-406usingCS10
7、Fcalibrasewheelsfor50cyclesundera500gramload.”.Page3,paragraph4.2.3.1:Deleteandsubstitute:“4.2.3.1Adhesiontestmethod.Atape,3M670(madebythe3MCompany),isfirmlyappliedtothetestspecimen.Thetapeisremovedusingasnapmotionappliedat90degreestothetestspecimen.
8、”.Page3,paragraph4.2.3.2:Delete:“240hours(10cycles)”andsubstitute:“120hours(5cycles)”.CUSTODIAN:PREPARINGACTIVITY:AirForce–11AirForce–11PROJECTNUMBER:8415-F908FSC8415标准分享网www.bzfxw.com免费下载MIL-C-83409(USAF)9February1973MILITARYSPECIFICATIONCOATINGS,VI
