precision approach procedure An instrument approach procedure (IAP) using azimuth and glide path (GP) information provided by an instrument landing system (ILS), a microwave landing systerm (MLS) or a precision approach radar (PAR). There are three types of precision approaches:
(a)
precision approach CAT I;
(b)
precision approach CAT II; and
(c)
precision approach CAT III.
Fr: procédure d’approche de précision
precision approach radar A high-definition, short-range radar used as an approach aid. This system provides the controller with altitude, azimuth and range information of high accuracy for the purpose of assisting the pilot in executing an approach and landing. This form of navigation assistance is termed a “precision radar approach.”
. abbreviation: PAR
Fr: radar d’approche de précision
precision controller
A duty controller assigned to a precision radar approach control position.
Fr: contr.leur de précision
precision radar approach An instrument approach procedure (IAP) in which the final approach is conducted in accordance with directions issued by a controller referring to a precision approach radar (PAR) display.
. see also: ground controlled approach (GCA)
Fr: approche au radar de précision
precision runway A runway served by visual aids and non-visual NAVAIDs that provide lateral and vertical guidance to the operating minima as specified in precision runway CAT I, precision runway CAT II and precision runway CAT III.
. see also: precision runway CAT I, precision runway CAT II and precision runway CAT III
Fr: piste de précision
precision runway CAT I A runway adequate for instrument approach down to a decision height (DH) lower than 250 ft, but not lower than 200 ft, above height above aerodrome (HAA) or height above touchdown (HAT) and in operating visibility not less than 0.5 SM or runway visual range (RVR) 2600 ft.
. see also: precision runway
Fr: piste de précision CAT I
precision runway CAT II A runway adequate for instrument approach down to a decision height (DH) lower than 200 ft, but not lower than 100 ft, above height above aerodrome (HAA) or height above touchdown (HAT) and in operating visibility not less than runway visual range (RVR) 1200 ft.
. see also: precision runway
Fr: piste de précision CAT II
precision runway CAT III
There are three types of precision runway CAT III:
(a)
CAT III A: Operations are conducted or intended to be conducted down to a runway visual range (RVR) not less than 600 ft (no decision height (DH) being applicable).
(b)
CAT III B: Operations are conducted or intended to be conducted down to an RVR not less than 300 ft (no DH being applicable).
(c)
CAT III C: Operations are conducted or intended to be conducted with no DH and no RVR limitations.
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