******************************************************** 
                      NOTICE
********************************************************

This document was converted from Microsoft Word.

Content from the original version of the document such as
headers, footers, footnotes, endnotes, graphics, and page numbers
will not show up in this text version.

All text attributes such as bold, italic, underlining, etc. from the
original document will not show up in this text version.

Features of the original document layout such as
columns, tables, line and letter spacing, pagination, and margins
will not be preserved in the text version.

If you need the complete document, download the
Microsoft Word or Adobe Acrobat version.

*****************************************************************



FEDERAL COMMUNICATIONS COMMISSION
ENFORCEMENT BUREAU
Office of Director – Region Two
3600 Hiram Lithia Spring Rd. SW
Powder Springs, GA 30127
June 15, 2017
Greenpoint Aerospace
5035 Warbird Drive
Denton, TX 76207
NOTICE OF UNLICENSED OPERATION
                                                           Case Number:  EB-FIELDSCR-17-00024339
On May 18, 2017, an Agent from the Dallas Office of the Federal Communications 
Commission’s (FCC’s) Enforcement Bureau responded to a complaint from the Federal Aviation 
Administration (FAA) concerning interference to their Traffic Collision Avoidance System 
(TCAS) on 1030 MHz and 1090 MHz.  Based on the compliant, the Agent spoke to Greenpoint 
Aerospace (GA) regarding the interference.  A representative for GA stated to the Agent that it 
has been periodically testing TCAS for the commercial airline industry using GA’s own 
transmitting equipment, but that they had no authorization for their operation on 1030 MHz
and/or 1090 MHz.
You are hereby warned that operation of radio transmitting equipment without a valid radio 
station authorization constitutes a violation of the Federal laws cited above and could subject the 
operator to severe penalties, including, but not limited to, substantial monetary fines, in rem
arrest action against the offending radio equipment, and criminal sanctions, including 
imprisonment.
1
  
YOUR UNLICENSED OPERATION MUST NOT BE RESUMED.
You have ten (10) days from the date of this notice to respond with any evidence that you have 
authority to operate granted by the FCC.  Your response should be sent to the address in the 
letterhead and reference the listed case number.  Under the Privacy Act of 1974,
2
we are 
informing you that the Commission’s staff will use all relevant material information before it to 
                                                
1
See 47 U.S.C. §§ 401, 501, 503 and 510.
2
5 U.S.C. § 552a(e)(3).
determine what, if any, enforcement action is required to ensure your compliance with FCC 
rules.  This will include any information that you disclose in your reply.
You may contact this office if you have any questions.
Ronald D. Ramage
Regional Director
Region Two
Enforcement Bureau 
Federal Communications Commission
Attachments:
Excerpts from the Communications Act of 1934, As Amended
Enforcement Bureau, "Inspection Fact Sheet", March 2005