What is the ICAO 24-bit address of EI-GPO?

4CAA54. The Mode S address is assigned to the airframe by its country of registration and stays the same from flight to flight.

When did the Skydex network last hear EI-GPO?

On 2026-11-11. Our receivers have heard it on 61 days since 2026-09-10.

EI-GPO is a ATR 72-600. It was built by ATR. One pilot has caught this exact tail in Skydex.

9 Skydex receivers (Anglesey, Derbyshire, station-1020) have heard EI-GPO, 61 sightings since 10 Sep 2026; last on 11 Nov 2026.

Anglesey, GB — 🇬🇧 United Kingdom · Anglesey · run by @karl-owen — 1 airframe, 59 sightings, last 2026-11-11
Lee Hall — 🇬🇧 United Kingdom · Derbyshire · run by @leehall — 1 airframe, 53 sightings, last 2026-11-11
station-1020 · run by @joseph-furber — 1 airframe, 49 sightings, last 2026-11-11
Swadlincote — 🇬🇧 United Kingdom · Derbyshire · run by @swadlincote — 1 airframe, 30 sightings, last 2026-11-11
Andrew · run by @andrew-peacock — 1 airframe, 21 sightings, last 2026-11-11
station-1117 · run by @david-plant — 1 airframe, 19 sightings, last 2026-11-10
station-1089 · run by @wobert — 1 airframe, 17 sightings, last 2026-11-11
station-1088 — 🇬🇧 United Kingdom · Nottinghamshire · run by @wobert — 1 airframe, 17 sightings, last 2026-11-11
Rush_DML — near Dublin · run by @rush-dml — 1 airframe, 16 sightings, last 2026-11-11