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12/2/21 

Pilot/Controller Glossary 

P TIME

 

(See PROPOSED DEPARTURE TIME.) 

P-ACP

 

(See PREARRANGED COORDINATION 

PROCEDURES.) 

PAN-PAN

 The international radio-telephony urgen-

cy signal. When repeated three times, indicates 
uncertainty or alert followed by the nature of the 
urgency. 

(See MAYDAY.) 
(Refer to AIM.) 

PAR

 

(See PRECISION APPROACH RADAR.) 

PAR [ICAO]

 

(See ICAO Term PRECISION APPROACH 

RADAR.) 

PARALLEL ILS APPROACHES

 Approaches to 

parallel runways by IFR aircraft which, when 
established inbound toward the airport on the 
adjacent final approach courses, are radar-separated 
by at least 2 miles. 

(See FINAL APPROACH COURSE.) 
(See SIMULTANEOUS ILS APPROACHES.) 

PARALLEL OFFSET ROUTE

 A parallel track to 

the left or right of the designated or established 
airway/route. Normally associated with Area Navi-
gation (RNAV) operations. 

(See AREA NAVIGATION.) 

PARALLEL RUNWAYS

 Two or more runways at 

the same airport whose centerlines are parallel. In 
addition to runway number, parallel runways are 
designated as L (left) and R (right) or, if three parallel 
runways exist, L (left), C (center), and R (right). 

PBCT

 

(See PROPOSED BOUNDARY CROSSING 

TIME.) 

PBN

 

(See ICAO Term PERFORMANCE

BASED 

NAVIGATION.) 

PDC

 

(See 

PRE

DEPARTURE CLEARANCE

.) 

PDRR

 

(See PRE

DEPARTURE REROUTE.) 

PERFORMANCE

BASED NAVIGATION (PBN) 

[ICAO]

  Area navigation based on performance 

requirements for aircraft operating along an ATS 
route, on an instrument approach procedure or in a 
designated airspace. 

Note: Performance requirements are expressed in 

navigation specifications (RNAV specification, 
RNP specification) in terms of accuracy, integrity, 
continuity, availability, and functionality needed for 
the proposed operation in the context of a 
particular airspace concept. 

PERMANENT ECHO

 Radar signals reflected from 

fixed objects on the earth’s surface; e.g., buildings, 
towers, terrain. Permanent echoes are distinguished 
from “ground clutter” by being definable locations 
rather than large areas. Under certain conditions they 
may be used to check radar alignment. 

PERTI

 

(See PLAN, EXECUTE, REVIEW, TRAIN, 

IMPROVE.) 

PGUI

 

(See PLANVIEW GRAPHICAL USER 

INTERFACE.) 

PHOTO RECONNAISSANCE

 Military activity 

that requires locating individual photo targets and 
navigating to the targets at a preplanned angle and 
altitude. The activity normally requires a lateral route 
width of 16 NM and altitude range of 1,500 feet to 
10,000 feet AGL. 

PILOT BRIEFING

 A service provided by the FSS 

to assist pilots in flight planning. Briefing items may 
include weather information, NOTAMS, military 
activities, flow control information, and other items 
as requested. 

(Refer to AIM.) 

PILOT IN COMMAND

 The pilot responsible for 

the operation and safety of an aircraft during flight 
time. 

(Refer to 14 CFR Part 91.) 

PILOT WEATHER REPORT

 A report of meteoro-

logical phenomena encountered by aircraft in flight. 

(Refer to AIM.) 

PCG P