151 

Federal Aviation Administration, DOT 

§ 121.354 

(3) At least one of the communica-

tion systems must have two-way voice 
communication capability. 

(b) No certificate holder conducting a 

flag or supplemental operation or a do-
mestic operation within the State of 
Alaska may conduct an operation with-
out the equipment specified in para-
graph (a) of this section, if the Admin-
istrator finds that equipment to be 
necessary for search and rescue oper-
ations because of the nature of the ter-
rain to be flown over. 

(c) Notwithstanding the require-

ments of paragraph (a) of this section, 
installation and use of a single LRNS 
and a single LRCS may be authorized 
by the Administrator and approved in 
the certificate holder’s operations 
specifications for operations and routes 
in certain geographic areas. The fol-
lowing are among the operational fac-
tors the Administrator may consider in 
granting an authorization: 

(1) The ability of the flightcrew to 

navigate the airplane along the route 
within the degree of accuracy required 
for ATC, 

(2) The length of the route being 

flown, and 

(3) The duration of the very high fre-

quency communications gap. 

[Doc. No. 6258, 29 FR 19205, Dec. 31, 1964, as 
amended by Amdt. 121–253, 61 FR 2611, Jan. 
26, 1996; Amdt. 121–254, 61 FR 7191, Feb. 26, 
1996; Amdt. 121–333, 72 FR 31682, June 7, 2007] 

§ 121.353 Emergency equipment for op-

erations over uninhabited terrain 

areas: Flag, supplemental, and cer-

tain domestic operations. 

Unless the airplane has the following 

equipment, no person may conduct a 
flag or supplemental operation or a do-
mestic operation within the States of 
Alaska or Hawaii over an uninhabited 
area or any other area that (in its oper-
ations specifications) the Adminis-
trator specifies required equipment for 
search and rescue in case of an emer-
gency: 

(a) Suitable pyrotechnic signaling de-

vices. 

(b) An approved survival type emer-

gency locator transmitter. Batteries 
used in this transmitter must be re-
placed (or recharged, if the battery is 
rechargeable) when the transmitter has 
been in use for more than 1 cumulative 

hour, or when 50 percent of their useful 
life (or for rechargeable batteries, 50 
percent of their useful life of charge) 
has expired, as established by the 
transmitter manufacturer under its ap-
proval. The new expiration date for re-
placing (or recharging) the battery 
must be legibly marked on the outside 
of the transmitter. The battery useful 
life (or useful life of charge) require-
ments of this paragraph do not apply 
to batteries (such as water-activated 
batteries) that are essentially unaf-
fected during probable storage inter-
vals. 

(c) Enough survival kits, appro-

priately equipped for the route to be 
flown for the number of occupants of 
the airplane. 

[Doc. No. 6258, 29 FR 19205, Dec. 31, 1964, as 
amended by Amdt. 121–79, 36 FR 18724, Sept. 
21, 1971; Amdt. 121–106, 38 FR 22378 Aug. 20, 
1973; Amdt. 121–158, 45 FR 38348, June 9, 1980; 
Amdt. 121–239, 59 FR 32057, June 21, 1994; 
Amdt. 121–251, 60 FR 65932, Dec. 20, 1995] 

§ 121.354 Terrain awareness and warn-

ing system. 

(a) 

Airplanes manufactured after March 

29, 2002. 

No person may operate a tur-

bine-powered airplane unless that air-
plane is equipped with an approved ter-
rain awareness and warning system 
that meets the requirements for Class 
A equipment in Technical Standard 
Order (TSO)–C151. The airplane must 
also include an approved terrain situa-
tional awareness display. 

(b) 

Airplanes manufactured on or before 

March 29, 2002. 

No person may operate 

a turbine-powered airplane after March 
29, 2005, unless that airplane is 
equipped with an approved terrain 
awareness and warning system that 
meets the requirements for Class A 
equipment in Technical Standard Order 
(TSO)–C151. The airplane must also in-
clude an approved terrain situational 
awareness display. 

(Approved by the Office of Management and 
Budget under control number 2120–0631) 

(c) 

Airplane Flight Manual. 

The Air-

plane Flight Manual shall contain ap-
propriate procedures for— 

(1) The use of the terrain awareness 

and warning system; and 

(2) Proper flight crew reaction in re-

sponse to the terrain awareness and