713 

Federal Aviation Administration, DOT 

§ 91.21 

(1) Within 8 hours after the consump-

tion of any alcoholic beverage; 

(2) While under the influence of alco-

hol; 

(3) While using any drug that affects 

the person’s faculties in any way con-
trary to safety; or 

(4) While having an alcohol con-

centration of 0.04 or greater in a blood 
or breath specimen. Alcohol concentra-
tion means grams of alcohol per deci-
liter of blood or grams of alcohol per 
210 liters of breath. 

(b) Except in an emergency, no pilot 

of a civil aircraft may allow a person 
who appears to be intoxicated or who 
demonstrates by manner or physical 
indications that the individual is under 
the influence of drugs (except a med-
ical patient under proper care) to be 
carried in that aircraft. 

(c) A crewmember shall do the fol-

lowing: 

(1) On request of a law enforcement 

officer, submit to a test to indicate the 
alcohol concentration in the blood or 
breath, when— 

(i) The law enforcement officer is au-

thorized under State or local law to 
conduct the test or to have the test 
conducted; and 

(ii) The law enforcement officer is re-

questing submission to the test to in-
vestigate a suspected violation of State 
or local law governing the same or sub-
stantially similar conduct prohibited 
by paragraph (a)(1), (a)(2), or (a)(4) of 
this section. 

(2) Whenever the FAA has a reason-

able basis to believe that a person may 
have violated paragraph (a)(1), (a)(2), or 
(a)(4) of this section, on request of the 
FAA, that person must furnish to the 
FAA the results, or authorize any clin-
ic, hospital, or doctor, or other person 
to release to the FAA, the results of 
each test taken within 4 hours after 
acting or attempting to act as a crew-
member that indicates an alcohol con-
centration in the blood or breath speci-
men. 

(d) Whenever the Administrator has a 

reasonable basis to believe that a per-
son may have violated paragraph (a)(3) 
of this section, that person shall, upon 
request by the Administrator, furnish 
the Administrator, or authorize any 
clinic, hospital, doctor, or other person 
to release to the Administrator, the re-

sults of each test taken within 4 hours 
after acting or attempting to act as a 
crewmember that indicates the pres-
ence of any drugs in the body. 

(e) Any test information obtained by 

the Administrator under paragraph (c) 
or (d) of this section may be evaluated 
in determining a person’s qualifica-
tions for any airman certificate or pos-
sible violations of this chapter and 
may be used as evidence in any legal 
proceeding under section 602, 609, or 901 
of the Federal Aviation Act of 1958. 

[Doc. No. 18334, 54 FR 34292, Aug. 18, 1989, as 
amended by Amdt. 91–291, June 21, 2006] 

§ 91.19

Carriage of narcotic drugs, 

marihuana, and depressant or stim-
ulant drugs or substances. 

(a) Except as provided in paragraph 

(b) of this section, no person may oper-
ate a civil aircraft within the United 
States with knowledge that narcotic 
drugs, marihuana, and depressant or 
stimulant drugs or substances as de-
fined in Federal or State statutes are 
carried in the aircraft. 

(b) Paragraph (a) of this section does 

not apply to any carriage of narcotic 
drugs, marihuana, and depressant or 
stimulant drugs or substances author-
ized by or under any Federal or State 
statute or by any Federal or State 
agency. 

§ 91.21

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 of the following U.S.-registered 
civil aircraft: 

(1) Aircraft operated by a holder of 

an air carrier operating certificate or 
an operating certificate; or 

(2) Any other aircraft while it is op-

erated under IFR. 

(b) Paragraph (a) of this section does 

not apply to— 

(1) Portable voice recorders; 
(2) Hearing aids; 
(3) Heart pacemakers; 
(4) Electric shavers; or 
(5) Any other portable electronic de-

vice that the operator of the aircraft 

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