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14 CFR Ch. I (1–1–14 Edition)
§ 91.189
§ 91.189
Category II and III operations:
General operating rules.
(a) No person may operate a civil air-
craft in a Category II or III operation
unless—
(1) The flight crew of the aircraft
consists of a pilot in command and a
second in command who hold the ap-
propriate authorizations and ratings
prescribed in § 61.3 of this chapter;
(2) Each flight crewmember has ade-
quate knowledge of, and familiarity
with, the aircraft and the procedures to
be used; and
(3) The instrument panel in front of
the pilot who is controlling the aircraft
has appropriate instrumentation for
the type of flight control guidance sys-
tem that is being used.
(b) Unless otherwise authorized by
the Administrator, no person may op-
erate a civil aircraft in a Category II or
Category III operation unless each
ground component required for that op-
eration and the related airborne equip-
ment is installed and operating.
(c)
Authorized DA/DH. For the pur-
pose of this section, when the approach
procedure being used provides for and
requires the use of a DA/DH, the au-
thorized DA/DH is the highest of the
following:
(1) The DA/DH prescribed by the ap-
proach procedure.
(2) The DA/DH prescribed for the
pilot in command.
(3) The DA/DH for which the aircraft
is equipped.
(d) Unless otherwise authorized by
the Administrator, no pilot operating
an aircraft in a Category II or Category
III approach that provides and requires
use of a DA/DH may continue the ap-
proach below the authorized decision
height unless the following conditions
are met:
(1) The aircraft is in a position from
which a descent to a landing on the in-
tended runway can be made at a nor-
mal rate of descent using normal ma-
neuvers, and where that descent rate
will allow touchdown to occur within
the touchdown zone of the runway of
intended landing.
(2) At least one of the following vis-
ual references for the intended runway
is distinctly visible and identifiable to
the pilot:
(i) The approach light system, except
that the pilot may not descend below
100 feet above the touchdown zone ele-
vation using the approach lights as a
reference unless the red terminating
bars or the red side row bars are also
distinctly visible and identifiable.
(ii) The threshold.
(iii) The threshold markings.
(iv) The threshold lights.
(v) The touchdown zone or touch-
down zone markings.
(vi) The touchdown zone lights.
(e) Unless otherwise authorized by
the Administrator, each pilot oper-
ating an aircraft shall immediately
execute an appropriate missed ap-
proach whenever, prior to touchdown,
the requirements of paragraph (d) of
this section are not met.
(f) No person operating an aircraft
using a Category III approach without
decision height may land that aircraft
except in accordance with the provi-
sions of the letter of authorization
issued by the Administrator.
(g) Paragraphs (a) through (f) of this
section do not apply to operations con-
ducted by certificate holders operating
under part 121, 125, 129, or 135 of this
chapter, or holders of management
specifications issued in accordance
with subpart K of this part. Holders of
operations specifications or manage-
ment specifications may operate a civil
aircraft in a Category II or Category
III operation only in accordance with
their operations specifications or man-
agement specifications, as applicable.
[Doc. No. 18334, 54 FR 34294, Aug. 18, 1989, as
amended by Amdt. 91–280, 68 FR 54560, Sept.
17, 2003; Amdt. 91–296, 72 FR 31679, June 7,
2007]
§ 91.191
Category II and Category III
manual.
(a) Except as provided in paragraph
(c) of this section, after August 4, 1997,
no person may operate a U.S.-reg-
istered civil aircraft in a Category II or
a Category III operation unless—
(1) There is available in the aircraft a
current and approved Category II or
Category III manual, as appropriate,
for that aircraft;
(2) The operation is conducted in ac-
cordance with the procedures, instruc-
tions, and limitations in the appro-
priate manual; and
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