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awaiting further clearance from air traffic control.
(See HOLDING FIX.)
(Refer to AIM.)
HOLDING FIX- A specified fix identifiable to a
pilot by NAVAIDs or visual reference to the ground
used as a reference point in establishing and
maintaining the position of an aircraft while holding.
(See FIX.)
(See VISUAL HOLDING.)
(Refer to AIM.)
HOLDING POINT [ICAO]- A specified location,
identified by visual or other means, in the vicinity of
which the position of an aircraft in flight is
maintained in accordance with air traffic control
clearances.
HOLDING PROCEDURE-
(See HOLD PROCEDURE.)
HOLD‐SHORT POINT- A point on the runway
beyond which a landing aircraft with a LAHSO
clearance is not authorized to proceed. This point
may be located prior to an intersecting runway,
taxiway, predetermined point, or approach/departure
flight path.
HOLD‐SHORT POSITION LIGHTS- Flashing
in‐pavement white lights located at specified
hold‐short points.
HOLD‐SHORT POSITION MARKING- The
painted runway marking located at the hold‐short
point on all LAHSO runways.
HOLD‐SHORT POSITION SIGNS- Red and white
holding position signs located alongside the
hold‐short point.
2/14/08 Pilot/Controller Glossary
PCG H-3
HOMING- Flight toward a NAVAID, without
correcting for wind, by adjusting the aircraft heading
to maintain a relative bearing of zero degrees.
(See BEARING.)
(See ICAO term HOMING.)
HOMING [ICAO]- The procedure of using the
direction‐finding equipment of one radio station with
the emission of another radio station, where at least
one of the stations is mobile, and whereby the mobile
station proceeds continuously towards the other
station.
HOVER CHECK- Used to describe when a
helicopter/VTOL aircraft requires a stabilized hover
to conduct a performance/power check prior to hover
taxi, air taxi, or takeoff. Altitude of the hover will
vary based on the purpose of the check.
HOVER TAXI- Used to describe a helicopter/VTOL
aircraft movement conducted above the surface and
in ground effect at airspeeds less than approximately
20 knots. The actual height may vary, and some
helicopters may require hover taxi above 25 feet AGL
to reduce ground effect turbulence or provide
clearance for cargo slingloads.
(See AIR TAXI.)
(See HOVER CHECK.)
(Refer to AIM.)
HOW DO YOU HEAR ME?- A question relating to
the quality of the transmission or to determine how
well the transmission is being received.
HZ-
(See HERTZ.)
JO 7110.65S 2/14/08
-2
2/14/08 Pilot/Controller Glossary
PCG I-1
I
I SAY AGAIN- The message will be repeated.
IAF-
(See INITIAL APPROACH FIX.)
IAP-
(See INSTRUMENT APPROACH
PROCEDURE.)
IAWP- Initial Approach Waypoint
ICAO-
(See ICAO Term INTERNATIONAL CIVIL
AVIATION ORGANIZATION.)
ICING- The accumulation of airframe ice.
Types of icing are:
a. Rime Ice- Rough, milky, opaque ice formed by
the instantaneous freezing of small supercooled
water droplets.
b. Clear Ice- A glossy, clear, or translucent ice
formed by the relatively slow freezing or large
supercooled water droplets.
c. Mixed- A mixture of clear ice and rime ice.
Intensity of icing:
a. Trace- Ice becomes perceptible. Rate of
accumulation is slightly greater than the rate of
sublimation. Deicing/anti‐icing equipment is not
utilized unless encountered for an extended period of
time (over 1 hour).
b. Light- The rate of accumulation may create a
problem if flight is prolonged in this environment
(over 1 hour). Occasional use of deicing/anti‐icing
equipment removes/prevents accumulation. It does
not present a problem if the deicing/anti‐icing
equipment is used.
c. Moderate- The rate of accumulation is such that
even short encounters become potentially hazardous
and use of deicing/anti‐icing equipment or flight
diversion is necessary.
d. Severe- The rate of accumulation is such that
deicing/anti‐icing equipment fails to reduce or
control the hazard. Immediate flight diversion is
necessary.
IDENT- A request for a pilot to activate the aircraft
transponder identification feature. This will help the
controller to confirm an aircraft identity or to identify
an aircraft.
(Refer to AIM.)
IDENT FEATURE- The special feature in the Air
Traffic Control Radar Beacon System (ATCRBS)
equipment. It is used to immediately distinguish one
displayed beacon target from other beacon targets.
(See IDENT.)
　
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