329 

Federal Aviation Administration, DOT 

§ 125.205 

(i) Except as provided in paragraph 

(d) of this section, two approved inde-
pendent navigation systems suitable 
for navigating the airplane along the 
route within the degree of accuracy re-
quired for ATC; 

(ii) One marker beacon receiver pro-

viding visual and aural signals; 

(iii) One ILS receiver; 
(iv) Two transmitters; 
(v) Two microphones; 
(vi) Two headsets or one headset and 

one speaker; and 

(vii) Two independent communica-

tion systems, one of which must have 
two-way voice communication capa-
bility, capable of transmitting to, and 
receiving from, at least one appro-
priate facility from any place on the 
route to be flown; and 

(3) Any RNAV system used to meet 

the navigation equipment require-
ments of this section is authorized in 
the certificate holder’s operations 
specifications. 

(d) 

Use of a single independent naviga-

tion system for operations under IFR—not 
for extended overwater operations. 

Not-

withstanding the requirements of para-
graph (c)(2)(i) of this section, the air-
plane may be equipped with a single 
independent navigation system suit-
able for navigating the airplane along 
the route to be flown within the degree 
of accuracy required for ATC if— 

(1) It can be shown that the airplane 

is equipped with at least one other 
independent navigation system suit-
able, in the event of loss of the naviga-
tion capability of the single inde-
pendent navigation system permitted 
by this paragraph at any point along 
the route, for proceeding safely to a 
suitable airport and completing an in-
strument approach; and 

(2) The airplane has sufficient fuel so 

that the flight may proceed safely to a 
suitable airport by use of the remain-
ing navigation system, and complete 
an instrument approach and land. 

(e) 

Use of VOR navigation equipment. 

If VOR navigation equipment is re-
quired by paragraph (c) or (d) of this 
section, no person may operate an air-
plane unless it is equipped with at least 
one approved DME or a suitable RNAV 
system. 

(f) 

Extended over-water operations. 

Notwithstanding the requirements of 

paragraph (c) of this section, installa-
tion and use of a single long-range 
navigation system and a single long- 
range communication system for ex-
tended over-water operations in certain 
geographic areas may be authorized by 
the Administrator and approved in the 
certificate holder’s operations speci-
fications. The following are among the 
operational factors the Administrator 
may consider in granting an authoriza-
tion: 

(1) The ability of the flight crew to 

navigate the airplane along the route 
to be flown within the degree of accu-
racy 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. FAA–2002–14002, 72 FR 31682, June 7, 
2007] 

§ 125.204

Portable electronic devices. 

(a) Except as provided in paragraph 

(b) of this section, no person may oper-
ate, nor may any operator or pilot in 
command of an aircraft allow the oper-
ation of, any portable electronic device 
on any U.S.-registered civil aircraft op-
erating under this part. 

(b) Paragraph (a) of this section does 

not apply to— 

(1) Portable voice recorders; 
(2) Hearing aids; 
(3) Heart pacemakers; 
(4) Electric shavers; 
(5) Portable oxygen concentrators 

that comply with the requirements in 
§ 125.219; or 

(6) Any other portable electronic de-

vice that the Part 125 certificate holder 
has determined will not cause inter-
ference with the navigation or commu-
nication system of the aircraft on 
which it is to be used. 

(c) The determination required by 

paragraph (b)(6) of this section shall be 
made by that Part 125 certificate hold-
er operating the particular device to be 
used. 

[Doc. No. FAA–1998–4954, 64 FR 1080, Jan. 7, 
1999, as amended by Docket FAA–2014–0554, 
Amdt. 125–65, 81 FR 33118, May 24, 2016] 

§ 125.205

Equipment requirements: 

Airplanes under IFR. 

No person may operate an airplane 

under IFR unless it has— 

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