December 22, 2015

U.S. Department ofTransportation DocketManagement System 1200 New Jersey Avenue, SE Washington, DC 20590 

## 'f;Trihqdro

YEARS OF QUALITY WITHOUT COMPROMISE

Re: Application for Amendmentto Exemption Nos. 11735 and 11735A issued to Trihydro Corporation- (Docket No. FAA-2015-0854)
DearMadam or Sir: Trihydro Corporation was issued Exemption No. 11735 on June 2, 2015 (the "Exemption"), for operation ofthe Altavian Nova R8400 Unmanned Aircraft System for the purpose ofconducting aerial acquisitions and research. Trihydro was also subsequently granted Exemption No. 11735A, amending the original Exemption to include the DJI SlOOO, DJI Inspire 1, and DJI Phantom 3 Professional. Trihydro hereby requests an additional amendment to its Exemption to include the following models of UAS underthe same terms and conditions contained in the Exemption: 1. UASUSA Tempest 2. Altavian F6500 3. Trimble UX5 HP 4. Trimble UX5 5. Precision HawkLancaster 6. Aero Vironment Puma 7. senseFly eBee RTK 8. 3DR Aero-M 9. ZetaBuffalo FX-79 10. Trimble ZX5 I 1. Aibotix Aibot X6 12. 3DR Iris+ 13. 3DR Solo 14. 3DRX8M 15. Riegl RiCopter TheFAAhas granted exemptions for the UAS listed above in circumstances similarin all material respects to those presented in this petition for amendment. See Exemption No. 12785 to Satstellar, LLC (Docket No. FAA-2015-1259), granting an exemption for the Altavian F6500, Trimble UX5, Trimble UX5 HP, Precision Hawk Lancaster, senseFly eBee RTK, 3DR Aero-M, 3DR Iris+, 3DR X8M, and the Riegl RiCopter; Exemption No. 12106 to Mr. Michael E. Sievers ofHunton & Williams LLP (Docket No. FAA1252 Commerce Drive 

### I laramie, WY 82070 

### I phone 307/745.7474 

### I lax 307/745.7729 

### I www.trihydro.comU.S. Department ofTransportation December 21, 2015 Page 2

2015-0789), granting an exemption for the Aero Vironment Puma; Exemption No. 11110B to Trimble NavigationLimited (DocketNo. FAA-2014-0367), granting an exemptionfortheTrimbleZX5; Exemption No. 12902toMr. AlejandroArayadbaAAFLYDRONESFL, LLC (DocketNo. FAA-2015-2686), granting an exemption for the 3DR Solo; Exemption No. 11492A to Mr. Joshua L. Vilches of C.E.T. Aviation (Docket No. FAA 2015-0322), granting an exemption for the Zeta Science Buffalo FX-79; Exemption No. 11188Ato StateFarmMutual Automobile Insurance Company (DocketNo. FAA-2014-0856), granting an exemption for the UASUSA Tempest; and Exemption No. 11216 to Solusia Air (Docket No. FAA2014- 0912), granting an exemption for the Aibotix Aibot X6. Operations ofthese additional UAS will be in full compliance with the terms ofExemption Nos. 11735 and 11735A, and in accordance with the procedures set forth in the relevantpilot operatinghandbooks for each UAS. Trihydro refers the FAA to its original Petition for Exemption dated March 26, 2015 (Docket No. FAA2015-0854) for a listing ofthe regulations for which an exemption is being sought, a demonstration ofthe public interest, and a showingofan equivalentlevel ofsafety. Therehavebeen no changesin theconditions and reasons relative to public interest and safety that were the basis for granting the original Exemption. Trihydro respectfully suggests that good cause exists for not publishing a summary of this petition for amendment in the Federal Register becausethe requested amendment would not set a precedent.
If you have any questions or need additional information to process this petition for amendment, please contact me at (307) 745-7474, orby email at dforry@trihydro.com. Sincerely, Trihydro Corporation

Deby L. Forry, Esq. Senior V.P. ofRisk Management & CFO