743 

Federal Aviation Administration, DOT 

§ 91.303 

(1) The aircraft must transmit its 

geometric position no later than 2.0 
seconds from the time of measurement 
of the position to the time of trans-
mission. 

(2) Within the 2.0 total latency allo-

cation, a maximum of 0.6 seconds can 
be uncompensated latency. The air-
craft must compensate for any latency 
above 0.6 seconds up to the maximum 
2.0 seconds total by extrapolating the 
geometric position to the time of mes-
sage transmission. 

(3) The aircraft must transmit its po-

sition and velocity at least once per 
second while airborne or while moving 
on the airport surface. 

(4) The aircraft must transmit its po-

sition at least once every 5 seconds 
while stationary on the airport surface. 

(f) 

Equipment with an approved devi-

ation.  Operators with equipment in-
stalled with an approved deviation 
under § 21.618 of this chapter also are in 
compliance with this section. 

(g) 

Incorporation by Reference. The 

standards required in this section are 
incorporated by reference with the ap-
proval of the Director of the Office of 
the Federal Register under 5 U.S.C. 
552(a) and 1 CFR part 51. All approved 
materials are available for inspection 
at the FAA’s Office of Rulemaking 
(ARM–1), 800 Independence Avenue, 
SW., Washington, DC 20590 (telephone 
202–267–9677), or at the National Ar-
chives and Records Administration 
(NARA). For information on the avail-
ability of this material at NARA, call 
202–741–6030, or go to 

http:// 

www.archives.gov/federal

lregister/ 

code

loflfederallregulations/ 

ibr

llocations.html. This material is also 

available from the sources indicated in 
paragraphs (g)(1) and (g)(2) of this sec-
tion. 

(1) Copies of Technical Standard 

Order (TSO)–C166b, Extended Squitter 
Automatic Dependent Surveillance– 
Broadcast (ADS–B) and Traffic Infor-
mation Service–Broadcast (TIS–B) 
Equipment Operating on the Radio 
Frequency of 1090 Megahertz (MHz) 
(December 2, 2009) and TSO–C154c, Uni-
versal Access Transceiver (UAT) Auto-
matic Dependent Surveillance–Broad-
cast (ADS–B) Equipment Operating on 
the Frequency of 978 MHz (December 2, 
2009) may be obtained from the U.S. 

Department of Transportation, Subse-
quent Distribution Office, DOT Ware-
house M30, Ardmore East Business Cen-
ter, 3341 Q 75th Avenue, Landover, MD 
20785; telephone (301) 322–5377. Copies of 
TSO –C166B and TSO–C154c are also 
available on the FAA’s Web site, at 
http://www.faa.gov/aircraft/air

lcert/ 

design

lapprovals/tso/.  Select the link 

‘‘Search Technical Standard Orders.’’ 

(2) Copies of Section 2, Equipment 

Performance Requirements and Test 
Procedures, of RTCA DO–260B, Min-
imum Operational Performance Stand-
ards for 1090 MHz Extended Squitter 
Automatic Dependent Surveillance- 
Broadcast (ADS–B) and Traffic Infor-
mation Services-Broadcast (TIS–B), 
December 2, 2009 (referenced in TSO– 
C166b) and Section 2, Equipment Per-
formance Requirements and Test Pro-
cedures, of RTCA DO–282B, Minimum 
Operational Performance Standards for 
Universal Access Transceiver (UAT) 
Automatic Dependent Surveillance- 
Broadcast (ADS–B), December 2, 2009 
(referenced in TSO C–154c) may be ob-
tained from RTCA, Inc., 1828 L Street, 
NW., Suite 805, Washington, DC 20036– 
5133, telephone 202–833–9339. Copies of 
RTCA DO–260B and RTCA DO–282B are 
also available on RTCA Inc.’s Web site, 
at 

http://www.rtca.org/onlinecart/ 

allproducts.cfm. 

[Doc. No. FAA–2007–29305, 75 FR 30194, May 
28, 2010; Amdt. 91–314–A, 75 FR 37712, June 30, 
2010; Amdt. 91–316, 75 FR 37712, June 30, 2010] 

§§ 91.228–91.299

[Reserved] 

Subpart D—Special Flight 

Operations 

S

OURCE

: Docket No. 18334, 54 FR 34308, Aug. 

18, 1989, unless otherwise noted. 

§ 91.301

[Reserved] 

§ 91.303

Aerobatic flight. 

No person may operate an aircraft in 

aerobatic flight— 

(a) Over any congested area of a city, 

town, or settlement; 

(b) Over an open air assembly of per-

sons; 

(c) Within the lateral boundaries of 

the surface areas of Class B, Class C, 
Class D, or Class E airspace designated 
for an airport; 

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