Federal Aviation Administration, DOT

Section 125.319

Subpart J - Flight Operations
Section 125.311 Flight crewmembers at controls.
(a) Except as provided in paragraph
(b) of this section, each required flight
crewmember on flight deck duty must
remain at the assigned duty station
with seat belt fastened while the airplane is taking off or landing and while
it is en route.
(b) A required flight crewmember
may leave the assigned duty station - 
(1) If the crewmember-s absence is
necessary for the performance of duties
in connection with the operation of the
airplane;
(2) If the crewmember-s absence is in
connection with physiological needs; or
(3) If the crewmember is taking a rest
period and relief is provided - 
(i) In the case of the assigned pilot in
command, by a pilot qualified to act as
pilot in command.
(ii) In the case of the assigned second
in command, by a pilot qualified to act
as second in command of that airplane
during en route operations. However,
the relief pilot need not meet the recent
experience
requirements
of
Section 125.285.
Section 125.313 Manipulation
of
controls
when carrying passengers.
No pilot in command may allow any
person to manipulate the controls of an
airplane while carrying passengers during flight, nor may any person manipulate the controls while carrying passengers during flight, unless that person is a qualified pilot of the certificate holder operating that airplane.
Section 125.315

Admission to flight deck.

(a) No person may admit any person
to the flight deck of an airplane unless
the person being admitted is - 
(1) A crewmember;
(2) An FAA inspector or an authorized representative of the National
Transportation Safety Board who is
performing official duties; or
(3) Any person who has the permission of the pilot in command.
(b) No person may admit any person
to the flight deck unless there is a seat
available for the use of that person in
the passenger compartment, except - 

(1) An FAA inspector or an authorized representative of the Administrator or National Transportation
Safety Board who is checking or observing flight operations; or
(2) A certificated airman employed
by the certificate holder whose duties
require an airman certificate.
Section 125.317 Inspector-s credentials: Admission to pilots- compartment: Forward observer-s seat.
(a) Whenever, in performing the duties of conducting an inspection, an
FAA inspector presents an Aviation
Safety Inspector credential, FAA Form
110A, to the pilot in command of an
airplane operated by the certificate
holder, the inspector must be given
free and uninterrupted access to the
pilot compartment of that airplane.
However, this paragraph does not limit
the emergency authority of the pilot in
command to exclude any person from
the pilot compartment in the interest
of safety.
(b) A forward observer-s seat on the
flight deck, or forward passenger seat
with headset or speaker, must be provided for use by the Administrator
while conducting en route inspections.
The suitability of the location of the
seat and the headset or speaker for use
in conducting en route inspections is
determined by the Administrator.
Section 125.319

Emergencies.

(a) In an emergency situation that
requires immediate decision and action, the pilot in command may take
any action considered necessary under
the circumstances. In such a case, the
pilot in command may deviate from
prescribed operations, procedures and
methods, weather minimums, and this
chapter, to the extent required in the
interests of safety.
(b) In an emergency situation arising
during flight that requires immediate
decision and action by appropriate
management personnel in the case of
operations conducted with a flight following service and which is known to
them, those personnel shall advise the
pilot in command of the emergency,
shall ascertain the decision of the pilot

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