1641-EX-ST-2018

Filing overview

Special Temporary Authority application - Address

Attention:

Dale Taft

City:

Torrance

E-Mail Address:

eng3@robinsonheli.com

State:

CA

Street Address:

2901 Airport Drive

Zip Code:

90505

Special Temporary Authority application - Applicant Name

Name of Applicant:

Robinson Helicopter Company

Special Temporary Authority application - Best Contact

First Name:

Dale

Last Name:

Taft

Phone Number:

310-539-0508 ext 229

Title:

Certification and Flight Test Engineer

Special Temporary Authority application - Certification

Applicant certification

Neither the applicant nor any other party to the application is subject to a denial of Federal benefits that includes FCC benefits pursuant to Section 5301 of the Anti-Drug Abuse Act of 1988, 21 U.S.C. Section 862, because of a conviction for possession or distribution of a controlled substance. The applicant hereby waives any claim to the use of any particular frequency or electromagnetic spectrum as against the regulatory power of the United States because of the prvious use of the same, whether by license or otherwise, and requests authorization in accordance with this application. (See Section 304 of the Communications Act of 1934, as amended.) The applicant acknowledges that all statements made in this application and attached exhibits are considered material representations, and that all the exhibits part hereof and are incorporated herein as if set out in full in this application; undersigned certifies that all statements in this application are true, complete and correct to the best of his/her knowledge and belief and are made in good faith. Applicant certifies that construction of the station would NOT be an action which is likely to have a significant environmental effect. See the Commission's Rules, 47 CFR1.1301-1.1319.

Date:

2018-09-19 00:00:00.0

Signature of Applicant (Authorized person filing form):

Barrett Dale Taft

Title of Applicant (if any):

Certification and Flight Test Engineer

Special Temporary Authority application - Explanation

Please explain in the area below why an STA is necessary:

Robinson Helicopter Company is a manufacturer of civil helicopters in Torrance, CA. We are in the process of obtaining FAA approval for installation of an autopilot system in our model R66 helicopter. Part of the certification process is testing to ensure the system is not adversely affected by high intensity radiated fields (HIRF). Reference Code of Federal Regulations, Title 14, Part 27, 27.1317. The tests to be conducted include the use of swept frequencies from 500 KHz to 18 GHz with the exception of prohibited frequency bands. Testing using widely spaced discrete frequencies would miss possible critical resonant frequencies. The proposed testing will include the following. From approximately 500 KHz to 400 MHz, the aircraft under test will be illuminated with a known low level swept frequency electromagnetic field and the resulting induced cable bundle currents will be measured on the aircraft using current probes. The following frequencies will be excluded from the test in order to guarantee no interference with other users and to minimize coordination logistics: 137 – 138 MHz 225 – 328.6 MHz 335.4 – 399.9 MHz For the excluded frequencies, induced currents can be estimated by interpolating between test points From 100 MHz to 18 GHz, the aircraft under test will be illuminated with a known low level swept frequency electromagnetic field and the resulting electromagnetic field strengths will be measured within the various compartments of the aircraft. From 100 MHz to 18 GHz, the aircraft under test will be illuminated with a known low level swept frequency electromagnetic field and the resulting electromagnetic field strengths will be measured within the various compartments of the aircraft. The following frequencies will be excluded from the test in order to guarantee no interference with other users and to minimize coordination logistics: 137 – 138 MHz 225 – 328.6 MHz 335.4 – 399.9 MHz 400.15 – 401 MHz 402 – 403 MHz 1525 – 1559 MHz 1564.42 – 1586.42 MHz 1617.775 – 1626.5 MHz 1626.5 – 1660.5 MHz 2020 – 2025 MHz 2320 – 2345 MHz 2483.5 – 2500 MHz 3700 – 4200 MHz 6875 – 7055 MHz 8025 – 8400 MHz 10.95 – 12.2 GHz* 11.45 – 11.7 GHz* 11.7 – 12.2 GHz* 12.2 – 12.7 GHz* 17.3 – 17.7 GHz *There is some overlap between the noted bands; however, they are listed individually in order to correlate with a list of bands to omit or pre-coordinate provided by the FCC Office of Engineering and Technology. For the excluded frequencies, electromagnetic field strengths can be estimated by interpolating between test points. The system being certified is manufactured by Garmin AT, Salem, Oregon, and we are following their example of obtaining a temporary site license for these tests. The Garmin file reference is 0260-EX-ST-2017.

Special Temporary Authority application - Information

Callsign:

WN9XQF

Class of Station:

FX

Nature of Service:

Experimental

Special Temporary Authority application - Initial values - Explanation

Please explain in the area below why an STA is necessary:

Robinson Helicopter Company is a manufacturer of civil helicopters in Torrance, CA. We are in the process of obtaining FAA approval for installation of an autopilot system in our model R66 helicopter. Part of the certification process is testing to ensure the system is not adversely affected by high intensity radiated fields (HIRF). Reference Code of Federal Regulations, Title 14, Part 27, 27.1317. The tests to be conducted include the use of swept frequencies from 500 KHz to 18 GHz with the exception of prohibited frequency bands. Testing using widely spaced discrete frequencies would miss possible critical resonant frequencies. The proposed testing will include the following. From approximately 500 KHz to 400 MHz, the aircraft under test will be illuminated with a known low level swept frequency electromagnetic field and the resulting induced cable bundle currents will be measured on the aircraft using current probes. From 100 MHz to 18 GHz, the aircraft under test will be illuminated with a known low level swept frequency electromagnetic field and the resulting electromagnetic field strengths will be measured within the various compartments of the aircraft The system being certified is manufactured by Garmin AT, Salem, Oregon, and we are following their example of obtaining a temporary site license for these tests. The Garmin file reference is 0260-EX-ST-2017.

Special Temporary Authority application - Initial values - Requested Period of Operation

Operation Start Date:

10/15/2018

Special Temporary Authority application - Manufacturer

Equipment 1 Experimental

No

Equipment 1 Manufacturer

ENI

Equipment 1 Model Number

5100L

Equipment 1 No. Of Units

1

Equipment 10 Experimental

No

Equipment 10 Manufacturer

Amplifier Research

Equipment 10 Model Number

DC2500

Equipment 10 No. Of Units

1

Equipment 11 Experimental

No

Equipment 11 Manufacturer

ERA

Equipment 11 Model Number

Rx Antenna

Equipment 11 No. Of Units

1

Equipment 12 Experimental

No

Equipment 12 Manufacturer

AR

Equipment 12 Model Number

ATH400M1G

Equipment 12 No. Of Units

1

Equipment 2 Experimental

No

Equipment 2 Manufacturer

ETS

Equipment 2 Model Number

3142

Equipment 2 No. Of Units

1

Equipment 3 Experimental

No

Equipment 3 Manufacturer

ETS

Equipment 3 Model Number

3115

Equipment 3 No. Of Units

1

Equipment 4 Experimental

No

Equipment 4 Manufacturer

Miteq

Equipment 4 Model Number

100M-20G LNA

Equipment 4 No. Of Units

1

Equipment 5 Experimental

No

Equipment 5 Manufacturer

Agilent

Equipment 5 Model Number

N9010A

Equipment 5 No. Of Units

1

Equipment 6 Experimental

No

Equipment 6 Manufacturer

Agilent

Equipment 6 Model Number

E8257D

Equipment 6 No. Of Units

1

Equipment 7 Experimental

No

Equipment 7 Manufacturer

Eaton

Equipment 7 Model Number

94111-1

Equipment 7 No. Of Units

8

Equipment 8 Experimental

No

Equipment 8 Manufacturer

ERA

Equipment 8 Model Number

10MHz Dipole

Equipment 8 No. Of Units

1

Equipment 9 Experimental

No

Equipment 9 Manufacturer

EG&G

Equipment 9 Model Number

D-dot Sensor

Equipment 9 No. Of Units

1

Special Temporary Authority application - Purpose of Operation

Please explain the purpose of operation:

The purpose of this STA is to perform Low Level Swept Coupling (LLSC) testing on a Code of Federal Regulations Title 14, Part 27 helicopter in order to demonstrate compliance with regulations 27.1317 for a High Intensity Radiated Field (HIRF) environment. The purpose of performing Low Level Swept Coupling (LLC) testing on an aircraft is for HIRF threat development for equipment installed on the applicable aircraft. The results of the LLC testing are then extrapolated to the applicable external HIRF environment to establish the equipment level HIRF threat. In a laboratory, Garmin Avionics and applicable aircraft interface equipment will then be tested to the HIRF test levels per the results of the aircraft threat development. Additional applicable information is found in Exhibits 1 and 2 of this application.

Special Temporary Authority application - Requested Period of Operation

Operation End Date:

04/15/2019

Operation Start Date:

11/26/2018

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