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Federal Aviation Administration, DOT 

§ 135.93 

the following certification statement 
in red lettering: ‘‘The manufacturer of 
this POC has determined this device 
conforms to all applicable FAA accept-
ance criteria for POC carriage and use 
on board aircraft.’’ The label require-
ments in this paragraph (f)(1)(v) do not 
apply to the following portable oxygen 
concentrators approved by the FAA for 
use on board aircraft prior to May 24, 
2016: 

(A) AirSep Focus; 
(B) AirSep FreeStyle; 
(C) AirSep FreeStyle 5; 
(D) AirSep LifeStyle; 
(E) Delphi RS–00400; 
(F) DeVilbiss Healthcare iGo; 
(G) Inogen One; 
(H) Inogen One G2; 
(I) Inogen One G3; 
(J) Inova Labs LifeChoice; 
(K) Inova Labs LifeChoice Activox; 
(L) International Biophysics 

LifeChoice; 

(M) Invacare Solo2; 
(N) Invacare XPO2; 
(O) Oxlife Independence Oxygen Con-

centrator; 

(P) Oxus RS–00400; 
(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 (f)(1) of this section may be car-
ried on or operated by a passenger on 
board an aircraft provided the aircraft 
operator ensures that all of the condi-
tions in this paragraph (f)(2) are satis-
fied: 

(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. 16097, 43 FR 46783, Oct. 10, 1978, as 
amended by Amdt. 135–60, 61 FR 2616, Jan. 26, 
1996; Docket FAA–2014–0554, Amdt. 135–133, 81 
FR 33119, May 24, 2016; Docket FAA–2018–0119, 
Amdt. 135–139, 83 FR 9175, Mar. 5, 2018] 

§ 135.93

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. 

(d) 

Approach. 

No person may use an 

autopilot at an altitude lower than 50 
feet below the DA(H) or MDA for the 
instrument procedure being flown, ex-
cept as follows— 

(1) For autopilots with an AFM speci-

fied altitude loss for approach oper-
ations— 

(i) An altitude no lower than twice 

the specified altitude loss if higher 
than 50 feet below the MDA or DA(H); 

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