Apparatus

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sensors Mode-S transponder

A05087

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N1194A · BEECH 36 Bonanza · operated by GTA AIR INC

Hex
A05087
Octal
50050207
Decimal
10,506,375
Country
US
Tail
N1194A
Type
BE36
No current signal · last broadcast Jul 24, 07:25 UTC
Flights observed
114
Distinct callsigns
19
Country
US
Last broadcast
Jul 24, 07:25 UTC

Last known position

Most recent position reported by Mode-S A05087.

Country allocation

The ICAO 24-bit address A05087 falls within the block assigned to United States (US) by ICAO Annex 10, Volume III. Every aircraft registered in United States receives a permanent address from this block at the time of registration; the address stays with the airframe even if the aircraft is re-registered to a different operator within the country.

Callsign history 19 distinct

Callsign Airline Flights Last seen
GTX321 - 26 2026-07-21
GTX322 - 16 2026-07-21
GTX248 - 11 2026-06-28
GTX247 - 8 2026-07-22
GTX505 - 7 2026-06-09
GTX508 - 6 2026-07-16
GTX323 - 6 2026-07-21
GTX947 - 4 2026-07-17
GTX504 - 4 2026-07-22
GTX501 - 4 2026-04-13
GTX948 - 3 2026-07-02
GTX924 - 3 2026-05-23
GTX512 - 3 2026-07-24
GTX507 - 3 2026-07-01
GTX502 - 3 2026-07-20
GTX701 - 2 2026-07-15
GTX506 - 2 2026-05-22
GTX503 - 2 2026-06-03
GTX900 - 1 2026-06-05

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-24 GTX512 - Jul 24, 05:05 UTCJul 24, 07:25 UTC2h 20m
2026-07-24 GTX512 - Jul 24, 01:35 UTCJul 24, 03:45 UTC2h 10m
2026-07-23 GTX512 - Jul 23, 22:55 UTCJul 24, 00:20 UTC1h 25m
2026-07-22 GTX504 RDU → IAD Jul 22, 14:35 UTCJul 22, 16:05 UTC1h 30m
2026-07-22 GTX504 - Jul 22, 11:10 UTCJul 22, 13:50 UTC2h 40m
2026-07-22 GTX247 - Jul 22, 05:15 UTCJul 22, 05:25 UTC10m
2026-07-21 GTX323 - Jul 21, 08:40 UTCJul 21, 10:25 UTC1h 45m
2026-07-21 GTX322 - Jul 21, 05:20 UTCJul 21, 07:55 UTC2h 35m
2026-07-21 GTX321 IAD → CMH Jul 21, 01:30 UTCJul 21, 03:20 UTC1h 50m
2026-07-20 GTX502 - Jul 20, 17:10 UTCJul 20, 18:15 UTC1h 5m
2026-07-20 GTX502 - Jul 20, 14:40 UTCJul 20, 16:20 UTC1h 40m
2026-07-20 GTX502 - Jul 20, 11:20 UTCJul 20, 12:35 UTC1h 15m
2026-07-17 GTX947 - Jul 17, 20:25 UTCJul 17, 23:39 UTC3h 15m
2026-07-17 GTX947 - Jul 17, 18:10 UTCJul 17, 19:25 UTC1h 15m
2026-07-17 GTX947 - Jul 17, 15:05 UTCJul 17, 16:29 UTC1h 25m
2026-07-16 GTX508 - Jul 16, 20:25 UTCJul 16, 22:55 UTC2h 30m
2026-07-16 GTX508 - Jul 16, 16:00 UTCJul 16, 18:55 UTC2h 55m
2026-07-15 GTX701 ADS → ADS Jul 15, 16:25 UTCJul 15, 18:20 UTC1h 55m
2026-07-02 GTX948 - Jul 2, 22:55 UTCJul 2, 23:30 UTC35m
2026-07-02 GTX948 - Jul 2, 17:45 UTCJul 2, 18:40 UTC55m
2026-07-02 GTX948 - Jul 2, 15:45 UTCJul 2, 16:35 UTC50m
2026-07-01 GTX507 - Jul 1, 18:10 UTCJul 1, 21:55 UTC3h 45m
2026-07-01 GTX507 - Jul 1, 15:55 UTCJul 1, 17:30 UTC1h 35m
2026-07-01 GTX507 - Jul 1, 12:10 UTCJul 1, 14:35 UTC2h 25m
2026-06-30 GTX247 IAD → IAD Jun 30, 04:45 UTCJun 30, 07:55 UTC3h 10m
2026-06-28 GTX248 - Jun 28, 04:05 UTCJun 28, 07:29 UTC3h 25m
2026-06-27 GTX248 IAD → IAD Jun 27, 04:39 UTCJun 27, 08:05 UTC3h 25m
2026-06-25 GTX248 JFK → IAD Jun 25, 06:55 UTCJun 25, 08:20 UTC1h 25m
2026-06-25 GTX247 - Jun 25, 04:40 UTCJun 25, 06:05 UTC1h 25m
2026-06-24 GTX322 CMH → IAD Jun 24, 05:44 UTCJun 24, 10:25 UTC4h 40m
2026-06-24 GTX321 - Jun 24, 01:34 UTCJun 24, 02:40 UTC1h 5m
2026-06-23 GTX504 - Jun 23, 10:44 UTCJun 23, 11:19 UTC35m
2026-06-23 GTX504 IAD → LUK Jun 23, 06:34 UTCJun 23, 08:45 UTC2h 10m
2026-06-21 GTX248 - Jun 21, 04:34 UTCJun 21, 06:10 UTC1h 35m
2026-06-21 GTX247 - Jun 21, 02:45 UTCJun 21, 03:59 UTC1h 15m
2026-06-20 GTX248 - Jun 20, 04:29 UTCJun 20, 07:29 UTC3h 0m
2026-06-19 GTX248 IAD → IAD Jun 19, 04:50 UTCJun 19, 08:09 UTC3h 20m
2026-06-18 GTX248 - Jun 18, 06:20 UTCJun 18, 08:05 UTC1h 45m
2026-06-18 GTX247 IAD → FRG Jun 18, 04:25 UTCJun 18, 05:50 UTC1h 25m
2026-06-17 GTX248 - Jun 17, 06:45 UTCJun 17, 08:15 UTC1h 30m
2026-06-17 GTX247 - Jun 17, 04:45 UTCJun 17, 06:05 UTC1h 20m
2026-06-16 GTX701 - Jun 16, 23:40 UTCJun 17, 01:55 UTC2h 15m
2026-06-16 GTX322 - Jun 16, 05:30 UTCJun 16, 10:09 UTC4h 40m
2026-06-16 GTX321 IAD → CMH Jun 16, 00:55 UTCJun 16, 02:45 UTC1h 50m
2026-06-14 GTX322 - Jun 14, 02:55 UTCJun 14, 07:40 UTC4h 45m
2026-06-13 GTX321 IAD → CMH Jun 13, 23:10 UTCJun 14, 01:00 UTC1h 50m
2026-06-13 GTX323 - Jun 13, 08:15 UTCJun 13, 09:45 UTC1h 30m
2026-06-13 GTX508 - Jun 13, 05:15 UTCJun 13, 06:20 UTC1h 5m
2026-06-13 GTX508 IAD → MHT Jun 13, 02:00 UTCJun 13, 04:20 UTC2h 19m
2026-06-12 GTX508 - Jun 12, 22:10 UTCJun 13, 00:30 UTC2h 20m

About Mode-S

A Mode-S transponder code (also called an "ICAO 24-bit address" or "hex code") is a 6-character hexadecimal identifier permanently assigned to an aircraft when it's first registered. Unlike callsigns (which change with each flight) or registrations (which can change if an aircraft is sold internationally), the Mode-S address stays with the airframe for the life of the aircraft in that country.

Every ADS-B transmission from an aircraft includes its Mode-S address, making it the most reliable way to identify a specific airframe. Flight-tracking services like Apparatus use the Mode-S address as the primary key for tying position broadcasts, callsigns, and ownership records together.

Prefer a tail-number view? See the N1194A page for operator, model, and routing details .

Mode-S A05087 frequently asked

What is Mode-S code A05087?
A05087 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N1194A.
Where is Mode-S A05087 registered?
Mode-S code A05087 is allocated to United States (US). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is A05087 broadcasting right now?
No active broadcast right now. Last signal was Jul 24, 07:25 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A05087, octal 50050207, decimal 10,506,375.
What flights does A05087 operate?
Mode-S A05087 has broadcast 19 distinct callsigns, including GTX321, GTX322, GTX248, GTX247, GTX505.