[Code of Federal Regulations]
[Title 14, Volume 2]
[Revised as of January 1, 2008]
From the U.S. Government Printing Office via GPO Access
[CITE: 14CFR97.3]
[Page 681-683]
TITLE 14--AERONAUTICS AND SPACE
CHAPTER I--FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF TRANSPORTATION
(CONTINUED)
PART 97_STANDARD INSTRUMENT PROCEDURES--Table of Contents
Subpart A_General
Sec. 97.3 Symbols and terms used in procedures.
As used in the standard instrument procedures prescribed in this
part--
Aircraft approach category means a grouping of aircraft based on a
speed of VREF, if specified, or if VREF is not specified, 1.3
Vso at the maximum certificated landing weight. VREF,
Vso, and the maximum certificated landing weight are those
values as established for the aircraft by the certification authority of
the country of registry. The categories are as follows--
(1) Category A: Speed less than 91 knots.
(2) Category B: Speed 91 knots or more but less than 121 knots.
(3) Category C: Speed 121 knots or more but less than 141 knots.
(4) Category D: Speed 141 knots or more but less than 166 knots.
(5) Category E: Speed 166 knots or more.
Approach procedure segments for which altitudes (minimum altitudes,
unless otherwise specified) and paths are prescribed in procedures, are
as follows--
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(1) Initial approach is the segment between the initial approach fix
and the intermediate fix or the point where the aircraft is established
on the intermediate course or final approach course.
(2) Initial approach altitude is the altitude (or altitudes, in high
altitude procedure) prescribed for the initial approach segment of an
instrument approach.
(3) Intermediate approach is the segment between the intermediate
fix or point and the final approach fix.
(4) Final approach is the segment between the final approach fix or
point and the runway, airport, or missed approach point.
(5) Missed approach is the segment between the missed approach
point, or point of arrival at decision altitude or decision height (DA/
DH), and the missed approach fix at the prescribed altitude.
Ceiling means the minimum ceiling, expressed in feet above the
airport elevation, required for takeoff or required for designating an
airport as an alternate airport.
Copter procedures means helicopter procedures, with applicable
minimums as prescribed in Sec. 97.35. Helicopters may also use other
procedures prescribed in subpart C of this part and may use the Category
A minimum descent altitude (MDA), or decision altitude or decision
height (DA/DH). For other than ``copter-only'' approaches, the required
visibility minimum for Category I approaches may be reduced to one-half
the published visibility minimum for Category A aircraft, but in no case
may it be reduced to less than one-quarter mile prevailing visibility,
or, if reported, 1,200 feet RVR. Reduction of visibility minima on
Category II instrument approach procedures is prohibited.
FAF means final approach fix.
HAA means height above airport and is expressed in feet.
HAL means height above landing and is the height of the DA/MDA above
a designated helicopter landing area elevation used for helicopter
instrument approach procedures and is expressed in feet.
HAS means height above the surface and is the height of the DA/MDA
above the highest terrain/surface within a 5,200-foot radius of the
missed approach point used in helicopter instrument approach procedures
and is expressed in feet above ground level (AGL).
HAT means height above touchdown.
HCH means helipoint crossing height and is the computed height of
the vertical guidance path above the helipoint elevation at the
helipoint expressed in feet.
Helipoint means the aiming point for the final approach course. It
is normally the center point of the touchdown and lift-off area (TLOF).
Hold in lieu of PT means a holding pattern established under
applicable FAA criteria, and used in lieu of a procedure turn to execute
a course reversal.
MAP means missed approach point.
More than 65 knots means an aircraft that has a stalling speed of
more than 65 knots (as established in an approved flight manual) at
maximum certificated landing weight with full flaps, landing gear
extended, and power off.
MSA means minimum safe altitude, expressed in feet above mean sea
level, depicted on an approach chart that provides at least 1,000 feet
of obstacle clearance for emergency use within a certain distance from
the specified navigation facility or fix.
NA means not authorized.
NOPT means no procedure turn required. Altitude prescribed applies
only if procedure turn is not executed.
Procedure turn means the maneuver prescribed when it is necessary to
reverse direction to establish the aircraft on an intermediate or final
approach course. The outbound course, direction of turn, distance within
which the turn must be completed, and minimum altitude are specified in
the procedure. However, the point at which the turn may be begun, and
the type and rate of turn, is left to the discretion of the pilot.
RA means radio altimeter setting height.
RVV means runway visibility value.
SIAP means standard instrument approach procedure.
65 knots or less means an aircraft that has a stalling speed of 65
knots or less (as established in an approved flight
[[Page 683]]
manual) at maximum certificated landing weight with full flaps, landing
gear extended, and power off.
T means nonstandard takeoff minimums or specified departure routes/
procedures or both.
TDZ means touchdown zone.
Visibility minimum means the minimum visibility specified for
approach, landing, or takeoff, expressed in statute miles, or in feet
where RVR is reported.
[Doc. No. FAA-2002-14002, 72 FR 31679, June 7, 2007]