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220 

14 CFR Ch. I (1–1–24 Edition) 

§ 121.575 

(Q) Precision Medical EasyPulse; 
(R) Respironics EverGo; 
(S) Respironics SimplyGo; 
(T) SeQual Eclipse; 
(U) SeQual eQuinox Oxygen System 

(model 4000); 

(V) SeQual Oxywell Oxygen System 

(model 4000); 

(W) SeQual SAROS; and 
(X) VBox Trooper Oxygen Concen-

trator. 

(2) 

Operating requirements. 

Portable 

oxygen concentrators that satisfy the 
acceptance criteria identified in para-
graph (e)(1) of this section may be car-
ried or operated by a passenger on an 
aircraft provided the aircraft operator 
ensures that all of the conditions in 
this paragraph (e)(2) are satisfied: 

(i) 

Exit seats. 

No person operating a 

portable oxygen concentrator is per-
mitted to occupy an exit seat. 

(ii) 

Stowage of device. 

During move-

ment on the surface, takeoff and land-
ing, the device must be stowed under 
the seat in front of the user, or in an-
other approved stowage location so 
that it does not block the aisle way or 
the entryway to the row. If the device 
is to be operated by the user, it must 
be operated only at a seat location that 
does not restrict any passenger’s access 
to, or use of, any required emergency 
or regular exit, or the aisle(s) in the 
passenger compartment. 

[Doc. No. 12169, 39 FR 42677, Dec. 6, 1974, as 
amended by Amdt. 121–159, 45 FR 41594, June 
19, 1980; Docket FAA–2014–0554, Amdt. 121– 
374, 81 FR 33118, May 24, 2016] 

§ 121.575 Alcoholic beverages. 

(a) No person may drink any alco-

holic beverage aboard an aircraft un-
less the certificate holder operating 
the aircraft has served that beverage to 
him. 

(b) No certificate holder may serve 

any alcoholic beverage to any person 
aboard any of its aircraft who— 

(1) Appears to be intoxicated; 
(2) Is escorting a person or being es-

corted in accordance with 49 CFR 
1544.221; or 

(3) Has a deadly or dangerous weapon 

accessible to him while aboard the air-
craft in accordance with 49 CFR 
1544.219, 1544.221, or 1544.223. 

(c) No certificate holder may allow 

any person to board any of its aircraft 

if that person appears to be intoxi-
cated. 

(d) Each certificate holder shall, 

within five days after the incident, re-
port to the Administrator the refusal 
of any person to comply with para-
graph (a) of this section, or of any dis-
turbance caused by a person who ap-
pears to be intoxicated aboard any of 
its aircraft. 

[Doc. No. 6258, 29 FR 19219, Dec. 31, 1964, as 
amended by Amdt. 121–118, 40 FR 17552, Apr. 
21, 1975; Amdt. 121–178, 47 FR 13316, Mar. 29, 
1982; Amdt. 121–275, 67 FR 31932, May 10, 2002] 

§ 121.576 Retention of items of mass in 

passenger and crew compartments. 

The certificate holder must provide 

and use means to prevent each item of 
galley equipment and each serving 
cart, when not in use, and each item of 
crew baggage, which is carried in a pas-
senger or crew compartment from be-
coming a hazard by shifting under the 
appropriate load factors corresponding 
to the emergency landing conditions 
under which the airplane was type cer-
tificated. 

[Doc. No. 16383, 43 FR 22648, May 25, 1978] 

§ 121.577 Stowage of food, beverage, 

and passenger service equipment 
during airplane movement on the 
surface, takeoff, and landing. 

(a) No certificate holder may move 

an airplane on the surface, take off, or 
land when any food, beverage, or table-
ware furnished by the certificate hold-
er is located at any passenger seat. 

(b) No certificate holder may move 

an airplane on the surface, take off, or 
land unless each food and beverage 
tray and seat back tray table is se-
cured in its stowed position. 

(c) No certificate holder may permit 

an airplane to move on the surface, 
take off, or land unless each passenger 
serving cart is secured in its stowed po-
sition. 

(d) No certificate holder may permit 

an airplane to move on the surface, 
take off, or land unless each movie 
screen that extends into an aisle is 
stowed. 

(e) Each passenger shall comply with 

instructions given by a crewmember 

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221 

Federal Aviation Administration, DOT 

§ 121.579 

with regard to compliance with this 
section. 

[Doc. No. 26142, 57 FR 42674, Sept. 15, 1992] 

§ 121.578 Cabin ozone concentration. 

(a) For the purpose of this section, 

the following definitions apply: 

(1) 

Flight segment 

means scheduled 

nonstop flight time between two air-
ports. 

(2) 

Sea level equivalent 

refers to condi-

tions of 25 

°

C and 760 millimeters of 

mercury pressure. 

(b) Except as provided in paragraphs 

(d) and (e) of this section, no certifi-
cate holder may operate an airplane 
above the following flight levels unless 
it is successfully demonstrated to the 
Administrator that the concentration 
of ozone inside the cabin will not ex-
ceed— 

(1) For flight above flight level 320, 

0.25 parts per million by volume, sea 
level equivalent, at any time above 
that flight level; and 

(2) For flight above flight level 270, 

0.1 parts per million by volume, sea 
level equivalent, time-weighted aver-
age for each flight segment that ex-
ceeds 4 hours and includes flight above 
that flight level. (For this purpose, the 
amount of ozone below flight level 180 
is considered to be zero.) 

(c) Compliance with this section 

must be shown by analysis or tests, 
based on either airplane operational 
procedures and performance limita-
tions or the certificate holder’s oper-
ations. The analysis or tests must show 
either of the following: 

(1) Atmospheric ozone statistics indi-

cate, with a statistical confidence of at 
least 84%, that at the altitudes and lo-
cations at which the airplane will be 
operated cabin ozone concentrations 
will not exceed the limits prescribed by 
paragraph (b) of this section. 

(2) The airplane ventilation system 

including any ozone control equipment, 
will maintain cabin ozone concentra-
tions at or below the limits prescribed 
by paragraph (b) of this section. 

(d) A certificate holder may obtain 

an authorization to deviate from the 
requirements of paragraph (b) of this 
section, by an amendment to its oper-
ations specifications, if— 

(1) It shows that due to cir-

cumstances beyond its control or to 

unreasonable economic burden it can-
not comply for a specified period of 
time; and 

(2) It has submitted a plan acceptable 

to the Administrator to effect compli-
ance to the extent possible. 

(e) A certificate holder need not com-

ply with the requirements of paragraph 
(b) of this section for an aircraft— 

(1) When the only persons carried are 

flight crewmembers and persons listed 
in § 121.583; 

(2) If the aircraft is scheduled for re-

tirement before January 1, 1985; or 

(3) If the aircraft is scheduled for re- 

engining under the provisions of sub-
part E of part 91, until it is re-engined. 

[Doc. No. 121–154, 45 FR 3883, Jan. 21, 1980. Re-
designated by Amdt. 121–162, 45 FR 46739, 
July 10, 1980, and amended by Amdt. 121–181, 
47 FR 58489, Dec. 30, 1982; Amdt. 121–251, 60 
FR 65935, Dec. 20, 1995] 

§ 121.579 Minimum altitudes for use of 

autopilot. 

(a) 

Definitions. 

For purpose of this 

section— 

(1) Altitudes for takeoff/initial climb 

and go-around/missed approach are de-
fined as above the airport elevation. 

(2) Altitudes for enroute operations 

are defined as above terrain elevation. 

(3) Altitudes for approach are defined 

as above the touchdown zone elevation 
(TDZE), unless the altitude is specifi-
cally in reference to DA (H) or MDA, in 
which case the altitude is defined by 
reference to the DA(H) or MDA itself. 

(b) 

Takeoff and initial climb. 

No person 

may use an autopilot for takeoff or ini-
tial climb below the higher of 500 feet 
or an altitude that is no lower than 
twice the altitude loss specified in the 
Airplane Flight Manual (AFM), except 
as follows— 

(1) At a minimum engagement alti-

tude specified in the AFM; or 

(2) At an altitude specified by the Ad-

ministrator, whichever is greater. 

(c) 

Enroute. 

No person may use an 

autopilot enroute, including climb and 
descent, below the following— 

(1) 500 feet; 
(2) At an altitude that is no lower 

than twice the altitude loss specified in 
the AFM for an autopilot malfunction 
in cruise conditions; or 

(3) At an altitude specified by the Ad-

ministrator, whichever is greater.