AVIA PROPELLER Ltd Beranovch 65/666 SERVICE PROPELLER Ltd Czech Republic Beranovch 65/666 199 00 Praha 9 SERVICE LETTER SL-2D DOA No. EASA.21J.072 Office of Airworthiness Zbyn ěk Tvrdk

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<ul><li><p>AVIA PROPELLER Ltd Beranovch 65/666 199 00 Praha 9 Czech Republic </p><p>SERVICE LETTER SL-2D </p><p>DOA No. EASA.21J.072 </p><p>Office of Airworthiness Zbynk Tvrdk Date : July 17, 2008 </p><p>Issue Michal Rout Date : July 17, 2008 </p><p> Page : 1 Pages : 2 </p><p> PEDMT : Prodlouen TBO vrtul typovch ad V508, V510 Obsah : 1. Prodlouen kalendn doby do GO 2. Krtkodob prodlouen TBO vrtule 1. Prodlouen kalendn doby do GO A. vod Provozn limity vrtule (TBO - doba mezi generln opravou) jsou vyjdeny provoznmi hodinami a kalendn dobou. Avia Propeller umouje prodlouen kalendn doby nad stanoven limity u vrtul s nevyerpanmi provoznmi hodinami. Kalendn TBO vrtule me bt prodloueno na zklad proveden speciln prohldky v provozu nebo ve vrobnm zvodu. Podmnky a omezen jsou uvedeny dle. B. innost Prodluovn kalendn doby do GO se tk vrtul typovch ad V508 a V510 s nsledujcmi omezenmi: (1) Vrtule provozovan na zemdlskch letounech mohou bt dobov prodloueny pouze ve vrobnm zvodu. (2) Vrtule V510T provozovan na letounech PZL-130 Orlk nen mon dobov prodlouit. C. Podmnky a limity pro prodluovn (1) Prohldka v provozu me bt provedena pouze osobou povenou Avia Propeller v souladu se Servisn instrukc SI-3 (posledn revize). Na zklad tto prohldky me bt kalendn doba prodlouena o jeden (1) rok od data prohldky nebo od data vypren kalendn doby, pokud je dvj ne datum proveden prohldky. Prodlouen kalendn doby vrtule do GO me bt provedeno opakovan, do dosaen celkov provozn doby osmi (8) let. Po vypren tto kalendn doby mus bt vrtule staena z provozu a zaslna do vrobnho zvodu k proveden generln opravy. (2) Prohldka ve vrobnm zvodu mus bt provedena v souladu s postupem uvedenm v manulu E-1395 (posledn revize). Na zklad tto prohldky me bt kalendn doba vrtule do GO prodlouena o vce ne jeden rok, ale ne vce ne kalendn doba uveden v pslunm Servisnm bulletinu. Dlka prodlouen zvis na vsledku speciln prohldky. </p><p> SUBJECT : TBO Extension of Propellers V508, V510 Type Series Content : 1. Calendar TBO extension 2. Temporary extension of propeller TBO 1. Calendar TBO extension A. Introduction Operation limits of the propeller to overhaul (TBO - time between overhaul) are defined by flight hours and calendar time. Avia Propeller makes possible to extend the calendar time beyond specified limit provided that the flight hours limit is not run out. Calendar TBO can be extended based on special inspection performed in the field or in the manufacturer workshop. See below for requirements and restrictions. B. Effectivity Calendar TBO extension can be applied to propellers V508 and V510 Type Series with following restrictions: (1) Propellers installed on agricultural aircrafts are possible to be extended only in the manufacturer workshop. (2) Propeller model V510T installed on aircraft PZL-130 Orlik is not possible to be extended. C. Requirements and Extension Limits (1) Inspection in the field must be carried out by Avia Propeller authorized person in accordance with Service Instruction SI-3 (latest revision). Based on this inspection the propeller calendar TBO can be extended for one (1) year from date of inspection or from date of current calendar TBO expiring, if this date earlier than date of inspection. Extension of propeller calendar TBO can be carried out repeatedly to total propeller calendar time eight (8) years. After total calendar time expired, the propeller has to be removed from service and be sended to propeller manufacturer workshop. (2) Inspection in the propeller manufacturer workshop must be carried out in accordance with procedure stated in manual E-1395 (latest revision). Based on this inspection the propeller calendar TBO can be extended for more than one year, but not more than calendar TBO published in appropriate Service Bulletin. Length of extension will be determined based on inspection result. </p></li><li><p>AVIA PROPELLER Ltd Beranovch 65/666 199 00 Praha 9 Czech Republic </p><p>SERVICE LETTER SL-2D </p><p>DOA No. EASA.21J.072 </p><p>Office of Airworthiness Zbynk Tvrdk Date : July 17, 2008 </p><p>Issue Michal Rout Date : July 17, 2008 </p><p> Page : 2 Pages : 2 </p><p> (3) Prodlouen kalendn doby me bt provedeno pouze na vrtulch vyrobench a/nebo opravench v Avia Propeller nebo autorizovanm servisnm stedisku. D. Nahrazen dokumentace Informace uveden v tto kapitole nahrazuj Servisn bulletiny Avia Propeller V508D/7b, V508D-AG/1b, V508Z/3b, V510/7b, V510T/1b, V510AG/1b. 2. Krtkodob prodlouen TBO vrtule Uvedeno v Servisnm dopisu SL-6. </p><p> (3) Only propellers manufactured and/or repaired by Avia Propeller Ltd. or authorized repair station are possible to calendar TBO be extended. D. Document Replacement </p><p>Information in this section replaces Avia Propeller Service Bulletins V508D/7b, V508D-AG/1b, V508Z/3b, V510/7b, V510T/1b, V510AG/1b. 2. Temporary extension of propeller TBO Refer to Service Letter SL-6. </p></li></ul>

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