Pilot/Controller Glossary 

9/5/24 

c. 

An obstacle beyond 10 NM from an airport/heliport that requires an obstacle departure procedure (ODP) 

to ensure obstacle avoidance. 

(See OBSTACLE.) 
(See OBSTRUCTION.) 

PROPELLER (PROP) WASH (PROP BLAST)

−

 The disturbed mass of air generated by the motion of a 

propeller. 
PROPOSED BOUNDARY CROSSING TIME

−

 Each center has a PBCT parameter for each internal airport. 

Proposed internal flight plans are transmitted to the adjacent center if the flight time along the proposed route 

from the departure airport to the center boundary is less than or equal to the value of PBCT or if airport adaptation 

specifies transmission regardless of PBCT. 
PROPOSED DEPARTURE TIME

−

 The time that the aircraft expects to become airborne. 

PROTECTED AIRSPACE

−

 The airspace on either side of an oceanic route/track that is equal to one-half the 

lateral separation minimum except where reduction of protected airspace has been authorized. 
PROTECTED SEGMENT- The protected segment is a segment on the amended TFM route that is to be inhibited 

from automatic adapted route alteration by ERAM. 
PT

−

 

(See PROCEDURE TURN.) 

PTP

−

 

(See POINT

−

TO

−

POINT.) 

PTS

−

 

(See POLAR TRACK STRUCTURE.) 

PUBLIC AIRCRAFT OPERATION (PAO)

−

 A UAS operation meeting the qualifications and conditions 

required for the operation of a public aircraft. 

(See AC

−

1.1) 

(See AIM) 

PUBLISHED INSTRUMENT APPROACH PROCEDURE VISUAL SEGMENT

−

 A segment on an IAP chart 

annotated as “Fly Visual to Airport” or “Fly Visual.” A dashed arrow will indicate the visual flight path on the 

profile and plan view with an associated note on the approximate heading and distance. The visual segment 

should be flown as a dead reckoning course while maintaining visual conditions. 
PUBLISHED ROUTE

−

 A route for which an IFR altitude has been established and published; e.g., Federal 

Airways, Jet Routes, Area Navigation Routes, Specified Direct Routes. 
PWS

−

 

(See PREDICTIVE WIND SHEAR ALERT SYSTEM.) 

PCG P

−

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