[Federal Register Volume 75, Number 82 (Thursday, April 29, 2010)]
[Notices]
[Page 22674]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2010-9947]


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DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration


Airborne Area Navigation Equipment Using Loran-C Inputs

AGENCY: Federal Aviation Administration (FAA), DOT.

ACTION: Notice of cancellation of: (1) Loran-C navigation system 
Technical Standard Orders (TSO); and (2) the revocation of Loran-C 
navigation system TSO Authorizations (TSOA), and request for public 
comment.

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SUMMARY: This notice announces the cancellation of Technical Standard 
Order (TSO) C-60, Airborne Area Navigation Equipment Using Loran-C 
inputs and all subsequent revisions. The effect of the cancelled TSOs 
will result in the revocation of all Technical Standard Order 
Authorizations issued for the production of those navigational systems. 
These actions are necessary because the Loran-C Navigation System 
ceased operation on February 8, 2010.

DATES: Comments must be received on or before June 1, 2010.

FOR FURTHER INFORMATION CONTACT: Mr. Kevin Bridges, AIR-130, Federal 
Aviation Administration, 470 L'Enfant Plaza, Suite 4102, Washington, DC 
20024. Telephone (202) 385-4627, fax (202) 385-4651, e-mail to: 
[email protected].

SUPPLEMENTARY INFORMATION:

Comments Invited

    You are invited to comment on the cancellation of the TSO and the 
revocation of the associated TSOAs by submitting written data, views, 
or arguments to the above address. Comments received may be examined, 
both before and after the closing date, at the above address, weekdays 
except Federal holidays, between 8:30 a.m. and 4:30 p.m. The Director, 
Aircraft Certification Service, will consider all comments received on 
or before the closing date.

Background

    The Loran-C navigation system ceased transmitting usable signals on 
February 8, 2010. Because the Loran-C system ceased operation, the FAA 
intends to cancel all Loran-C Technical Standard Orders and revoke all 
associated Technical Standard Order Authorizations (TSOA).
    The FAA database contains one (1) specific TSO requiring the Loran-
C system as a means of navigation, and numerous TSOAs issued for the 
design and manufacture of Loran-C avionics equipment. This announcement 
serves as notice to all Loran-C TSOA holders that the FAA intends to 
cancel all TSOs (including active historical TSOs) and revoke all TSOAs 
for Loran-C avionics equipment.

    Issued in Washington, DC.
Susan J.M. Cabler,
Assistant Manager, Aircraft Engineering Division, Aircraft 
Certification Service.
[FR Doc. 2010-9947 Filed 4-28-10; 8:45 am]
BILLING CODE 4910-13-P