Intelsat V F-3

{{Use American English|date=June 2020}}

{{Use dmy dates|date=June 2020}}

{{Infobox spaceflight

| name = Intelsat V F-3 → Intelsat 503

| image =

| image_caption =

| mission_type = Communication

| operator = COMSAT / INTELSAT

| website =

| COSPAR_ID = 1981-119A {{cite web|url=https://nssdc.gsfc.nasa.gov/nmc/spacecraft/display.action?id=1981-119A|title=Display: Intelsat 5 F-3 1981-119A|publisher=NASA|date=14 May 2020|access-date=30 June 2020}} {{PD-notice}}

| SATCAT = 12994

| mission_duration = 7 years (planned)

| spacecraft_bus = Intelsat V

| manufacturer = Ford Aerospace

| dry_mass = 1012 kg

| launch_mass = 1928 kg

| dimensions = 1.66 x 2.1 x 1.77 metres

| power = 1800 watts

| launch_date = 15 December 1981,
23:35:00 UTC

| launch_rocket = Atlas SLV-3D Centaur-D1AR (AC-55)

| launch_site = CCAFS, LC-36B

| launch_contractor = General Dynamics

| entered_service =

| disposal_type = Graveyard orbit

| deactivated = January 1998

| orbit_epoch = 15 December 1981

| orbit_reference = Geocentric orbit

| orbit_regime = Geostationary orbit

| orbit_longitude = 174.0° East (1981-1992)
177.0° West (1992-1995)
157.0° East (1995-1998)

| apsis = gee

| trans_band = 21 C-band
4 Ku-band

| trans_frequency =

| trans_capacity =

| trans_coverage =

| trans_TWTA =

| trans_EIRP =

| trans_HPBW =

| programme = Intelsat V

| previous_mission = Intelsat V F-1

| next_mission = Intelsat V F-4

}}

File:Atlas-Centaur launches with one INTELSAT V satellite.jpg

Intelsat V F-3, then named Intelsat 503, was a communications satellite operated by COMSAT. Launched on 15 December 1981, it was the third of fifteen Intelsat V satellites to be launched. The Intelsat V series was constructed by Ford Aerospace, based on the Intelsat V satellite bus. Intelsat V F-3 was part of an advanced series of satellites designed to provide greater telecommunications capacity for Intelsat's global network.