Part-FCL flight crew licensing

Part-M continuing airworthiness requirements

Part-MED medical certification of pilots, medical fitness of cabin crew, certification of AMEs and requirements of GMPs and OHMPs

Part-SPO specialised Operations 

pax passengers

PBN performance-based navigation 

PBR performance-based regulations 

PCP pilot common project (SESAR) 

PIA preliminary impact assessment 

PIS public interest sites

PM CPDLC protected mode controller–pilot data link communication

POA production organisation approval

PPL private pilot license

Q quarter

RAMP aerodrome ramp 

RE runway excursion 

RES research actions

RFFS rescue and firefighting services

RFID radio frequency identification

RI runway incursion

RIA regulatory impact assessment

RI-VAP runway incursion (vehicle animal person) 

RMP rulemaking programme

RMT rulemaking task

RNAV area navigation

SARPS standards and recommended practices (ICAO) 

SBAS satellite based augmentation system

SCF-NP system component failure (non-powerplant)

SCF-PP system component failure (powerplant)

SERA IR standardised European rules of the air implementing rule

SERA Part C Commission Implementing Regulation (EU) 2016/1185 of 20 July 2016 amending Implementing Regulation (EU) No 923/2012 as regards the update and completion of the common rules of the air and operational provisions regarding services and procedures in air navigation (SERA Part C) and repealing Regulation (EC) No 730/2006

SES Single European Sky

SESAR Single European Sky ATM Research

SET single-engined turbine

SLD