PFD
PFD is an abbreviation for:
- Patient transport service, passenger transport necessary for health reasons
- Personal flotation device , the life jacket
- Philippine Deaf Association
- Photosynthetically Active Photon Flux Density , photon flux density in the photosynthetically active radiation spectrum of the sun
- Popular Front for Democracy , a party in Lesotho
- Portable Filling Device , portable filling device for high pressure storage systems on aircraft
- Power Flux Density , power density
- Prefertilization diagnostics
- Primary Flight Display , part of the Electronic Flight Instrument System
- Process flow diagram , flow chart
- probability of dangerous failure on demand , a parameter for the error probability from IEC 61508
