1

Applicant Name and Contact Information:
USAerobotix LLC Attn: Jason T. Adams, Vice President
PO BOX 124 Gettysburg, OH 45328 (260) 444

- 1550 jason@usaerobotix.com

December 1 8 , 2015

Exemption 11453 Revision 1 to Docket FAA

- 2015

- 0231

- 0001

Dear Administrators,

In addendum to the ap p roval of exemption 11453

, USAerobotix LLC (“USAerobotix”) , the operator, would request a revised understanding of the aircraft used for the Operation. In summary, the O perator would request to use any aircraft as long as it meets minimum stan dards for all components and operatio ns as stated in the original application.

On page 2 of e xemption 11453 under Airworthiness Certification it states :
The UAS proposed by the petitioner is a SelectTech Geospatial EH

- 4

.

The petitioner requested relief from 14 CFR part 21, Certification procedures for products and p arts, Subpart H

— Airworthiness Certificates . In accordance with the statutory criteria provided in Section 333 of Public Law 112

- 95 in reference to 49 U.S.C. § 44704, and in consideration of the size, weight, speed, and limited operating area associated wit h the aircraft and its operation, the Secretary of Transportation has determined that this aircraft meets the conditions of Section 333. Therefore, the FAA finds that the requested relief from 14 CFR part 21 and any associated noise certification and
testi ng requirements of part 36, is not necessary.

As already proven in this draft of the original application and subsequent approval, the Operation will
remain the same. In an effort to reduce the paperwork, time, and costliness of submitting identical exemption applications per air craft, the Operator would like to use any aircraft, either purchased or amateur built, as long as the aircraft has the following characteristics:

1. The aircraft wil l not weigh more than 55 pounds, including payload.
2. The aircraft will not be capable of reaching a speed exceeding 87 knots.
3. This amendment will only apply to aircr aft specifically designed for vertical take

- off and landing capability for the purposes o f the Operation described in the original, approved application.

This amendment specifically addresses the first condition of the exemption as s tated on page 3 under
Conditions and Limitations :

1. O perations authorized by this grant of exemption are limited to the SelectTech Geospatial EH

- 4 when weighing less than 55 pounds including payload. Proposed o perations of any other aircraft will require a new petition or a petition to amend this exemption

.2

With the description of components and capabilities of the EH

- 4, most other aircraft of this class remain within the same capabi lities, safety guidelines, and standards already approved by many other exemptions. The main components of these aircraft are as follows:

1. Main autopilot system
2. Compass
3. Accelerometer /Gyroscope

4. Power distribution board
5. Voltage monitor/regulator

6. Electronic Speed Controllers (one per motor)

7. Electric motors
8. Lithium Polymer battery
9. Propellers
10. Airframe
11. Telemetry
12. Transmitter/Receiver system

The SelectTech Geospatial EH

- 4 system was designed using components fou nd in many other aircraft.
The capabilities for each of these c omponents are limited to a small range. With the blanket approval of a 55 pound weight limit, any adjusting of components will not significantly increase risk or decrea se safety.

In order to safely plan missions within the approved Operation, the Operator wishes to have access to
other aircraft if the need arises to make payload adjustments for the safe flight of different inspections. The Operator believes it is a safer op tion to allow for freedom to change aircraft as the industry continues to grow and improve components. All operations remain within the strict standard already established and approved by this exemption

. Allowing the Operator to develop “ amateur

- built ” or self

- developed aircraft would aid in improving the overall safety of the Operation and contribute to the growth of knowledg e within the unmanned systems and aeronautical industry.

Sincerely,

Jason T. Adams Vice President, USAerobotix LLC