U.S. Department of Transportation Docket Operations West Building, Room W12-140 1200 New Jersey Avenue, SE Washington , D.C. 20590-0001 Re: Request Extension for Exemption No. 10817 to 14 CFR § 25.571(e)(1) March 13, 2015

Project SA08072CH-T, Installation of the Aircell Broadband Services CABS) System with Ku Enhancements on Boeing 767 Series Aircraft In accordance with 14 CFR Part 11, Gogo, LLC , petitioned for an exemption from 14 CFR 

### § 25.571(e)( 1) (Amendment 25-96) as it relates to the above referenced certification project. Gogo also requested a previous extension to the previously granted exemption from this rule to amend the original exemption from one year from date the exemption was granted to one year from the date of STC issuance. Gogo has worked diligently to address all compliance items to close out the necessity of this exemption . As evidence of this fact, it should be noted that Gogo had several STC projects that were requ ired to be updated in the last year for this same radome installation . All other Gogo STC projects have been successfully shown to be compliant to 14CFR 25.571 (e)(1 ). These projects included two Boeing 777 Series Supplemental Type Certificates which were granted on February 28 , 2014 (ST11056SC) and April 14, 2014 (ST11 129SC). These projects previously had exemptions as well , under Exemption 10850. Those projects were fully certified and the STCs reissued on December 9, 2014. Gogo had two open Boeing 767-300 projects that required utilization of this exemption . Gogo has successfully completed one STC without the use of the exemption which was ST03368CH. However, based on resource issues with all parties involved , the second Boeing 767-300 series program has not yet been completed . All data has demonstrated that this design will show compliance to the regulations. as it has done in the first program . Gogo is now working through the necessary certification processes to have that data accepted into the second STC pursuant to an amendment project for STC ST11130SC . This request is identical to our original Petition for Exemption wh ich was granted . Safety and Public Interest The previous considerations and determination regarding safety and public interest have not changed between the original petition and this extension request. In light of the above considerations Gogo submits that good cause exists not to delay action on this request. Summary of Exemption Request In accordance with 14 CFR 

### § 11.81 (f), Gogo offers the following summary suitable for publication in the Federal Register in the event the FAA believes that good cause to waive publication has not been established. Gogo, LLC, requests the FAA grant an extension to the current exemption from the discrete source damage tolerance (i.e. , bird strike) requirements of 14 CFR 

### § 25.571(e)(1) for a period of one year based on data that such a bird strike encounter is less than extremely improbable.

1250 N ARLINGTON HEIGHTS RD ITASCA, IL 601 43 +1 630 647 1400 GOGOAIR.COMPlease feel free to contact me if you need further information. Respectfully,

# ~s~ Jarred S. Gentile Manager, Aircraft Certification jgentile@gogoair.com (630) 647-1076

1250 N ARLINGTON HEIGHTS RD ITASCA. IL 60143 +1 630 647 1400 GOGOAIR.COM