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sensors Mode-S transponder

A77721

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N580NN · BOMBARDIER Regional Jet CRJ-900 · operated by AMERICAN AIRLINES INC

Hex
A77721
Octal
51673441
Decimal
10,975,009
Country
US
Tail
N580NN
Type
CRJ9
No current signal · last broadcast 2h ago
Flights observed
613
Distinct callsigns
20
Country
US
Last broadcast
2h ago

Last known position

Most recent position reported by Mode-S A77721.

Country allocation

The ICAO 24-bit address A77721 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 20 distinct

Callsign Airline Flights Last seen
JIA5132 PSA Airlines 8 2026-04-18
JIA5378 PSA Airlines 7 2026-05-11
JIA5579 - 6 2026-07-03
JIA5475 PSA Airlines 6 2026-06-04
JIA5350 - 6 2026-07-01
JIA5266 PSA Airlines 6 2026-05-15
JIA5207 PSA Airlines 6 2026-05-14
JIA5151 PSA Airlines 6 2026-05-10
JIA5650 - 5 2026-07-05
JIA5648 - 5 2026-07-04
JIA5596 PSA Airlines 5 2026-05-16
JIA5541 - 5 2026-06-16
JIA5490 - 5 2026-06-28
JIA5416 PSA Airlines 5 2026-05-10
JIA5304 PSA Airlines 5 2026-06-01
JIA5294 - 5 2026-06-30
JIA5285 - 5 2026-07-05
JIA5269 - 5 2026-07-03
JIA5243 - 5 2026-06-15
JIA5085 PSA Airlines 5 2026-05-31

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 JIA5230 - Jul 14, 01:05 UTCJul 14, 02:15 UTC1h 10m
2026-07-13 JIA5338 ORF → DCA Jul 13, 22:15 UTCJul 13, 22:50 UTC35m
2026-07-13 JIA5338 - Jul 13, 20:40 UTCJul 13, 21:10 UTC30m
2026-07-13 JIA5104 - Jul 13, 17:55 UTCJul 13, 18:00 UTC5m
2026-07-13 JIA5104 - Jul 13, 17:05 UTCJul 13, 18:00 UTC55m
2026-07-13 JIA5104 BUF → DCA Jul 13, 17:04 UTCJul 13, 17:38 UTC34m
2026-07-13 JIA5104 - Jul 13, 15:25 UTCJul 13, 16:10 UTC45m
2026-07-13 JIA5226 - Jul 13, 11:35 UTCJul 13, 12:45 UTC1h 10m
2026-07-13 JIA5042 - Jul 13, 04:50 UTCJul 13, 06:01 UTC1h 10m
2026-07-13 JIA5042 DCA → AGS Jul 13, 04:49 UTCJul 13, 05:59 UTC1h 10m
2026-07-13 JIA5560 ATL → DCA Jul 13, 02:27 UTCJul 13, 03:56 UTC1h 29m
2026-07-13 JIA5560 ATL → DCA Jul 13, 02:30 UTCJul 13, 03:55 UTC1h 25m
2026-07-12 JIA5560 - Jul 12, 22:10 UTCJul 12, 23:40 UTC1h 30m
2026-07-12 JIA5213 - Jul 12, 18:20 UTCJul 12, 19:50 UTC1h 30m
2026-07-12 JIA5213 DCA → HSV Jul 12, 15:45 UTCJul 12, 17:15 UTC1h 30m
2026-07-12 JIA5323 - Jul 12, 13:55 UTCJul 12, 14:35 UTC40m
2026-07-12 JIA5323 DCA → PIT Jul 12, 12:15 UTCJul 12, 12:55 UTC40m
2026-07-12 JIA5520 ORF → DCA Jul 12, 10:25 UTCJul 12, 10:55 UTC30m
2026-07-12 JIA5622 - Jul 12, 02:40 UTCJul 12, 03:45 UTC1h 5m
2026-07-11 JIA5627 - Jul 11, 21:15 UTCJul 11, 22:40 UTC1h 25m
2026-07-11 JIA5627 - Jul 11, 18:55 UTCJul 11, 20:35 UTC1h 40m
2026-07-11 JIA5264 - Jul 11, 15:10 UTCJul 11, 16:15 UTC1h 5m
2026-07-11 JIA5264 - Jul 11, 13:25 UTCJul 11, 14:25 UTC1h 0m
2026-07-11 JIA5140 - Jul 11, 11:05 UTCJul 11, 12:05 UTC1h 0m
2026-07-11 JIA5142 - Jul 11, 04:40 UTCJul 11, 05:31 UTC50m
2026-07-11 JIA5141 - Jul 11, 00:25 UTCJul 11, 01:05 UTC40m
2026-07-11 JIA5141 CRW → CLT Jul 11, 00:22 UTCJul 11, 01:02 UTC40m
2026-07-10 JIA5141 - Jul 10, 22:45 UTCJul 10, 23:25 UTC40m
2026-07-10 JIA5444 - Jul 10, 18:50 UTCJul 10, 20:30 UTC1h 40m
2026-07-10 JIA5444 XNA → CLT Jul 10, 18:48 UTCJul 10, 20:29 UTC1h 41m
2026-07-10 JIA5444 - Jul 10, 16:05 UTCJul 10, 17:50 UTC1h 45m
2026-07-10 JIA5242 - Jul 10, 12:40 UTCJul 10, 13:35 UTC55m
2026-07-10 JIA5245 - Jul 10, 01:35 UTCJul 10, 03:25 UTC1h 50m
2026-07-09 JIA5087 - Jul 9, 21:50 UTCJul 9, 23:50 UTC2h 0m
2026-07-09 JIA5087 - Jul 9, 18:45 UTCJul 9, 20:35 UTC1h 50m
2026-07-09 JIA5136 - Jul 9, 16:20 UTCJul 9, 17:00 UTC40m
2026-07-09 JIA5624 - Jul 9, 13:35 UTCJul 9, 15:05 UTC1h 30m
2026-07-08 JIA5275 - Jul 8, 22:50 UTCJul 9, 00:05 UTC1h 15m
2026-07-08 JIA5275 - Jul 8, 20:30 UTCJul 8, 21:30 UTC1h 0m
2026-07-08 JIA5405 - Jul 8, 17:00 UTCJul 8, 18:35 UTC1h 35m
2026-07-08 JIA5405 - Jul 8, 13:50 UTCJul 8, 15:25 UTC1h 35m
2026-07-08 JIA5036 - Jul 8, 11:05 UTCJul 8, 12:00 UTC55m
2026-07-08 JIA5662 DCA → ORF Jul 8, 02:02 UTCJul 8, 02:37 UTC35m
2026-07-08 JIA5662 - Jul 8, 02:05 UTCJul 8, 02:15 UTC10m
2026-07-07 JIA5599 - Jul 7, 22:20 UTCJul 8, 00:15 UTC1h 55m
2026-07-07 JIA5599 DCA → MSN Jul 7, 19:20 UTCJul 7, 21:05 UTC1h 45m
2026-07-07 JIA536A - Jul 7, 17:10 UTCJul 7, 17:50 UTC40m
2026-07-06 JIA5367 - Jul 6, 20:30 UTCJul 6, 21:15 UTC45m
2026-07-06 JIA5367 - Jul 6, 20:20 UTCJul 6, 20:25 UTC5m
2026-07-06 JIA5091 - Jul 6, 16:00 UTCJul 6, 17:45 UTC1h 45m

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 N580NN page for operator, model, and routing details .

Mode-S A77721 frequently asked

What is Mode-S code A77721?
A77721 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N580NN.
Where is Mode-S A77721 registered?
Mode-S code A77721 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 A77721 broadcasting right now?
No active broadcast right now. Last signal was 2h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A77721, octal 51673441, decimal 10,975,009.
What flights does A77721 operate?
Mode-S A77721 has broadcast 20 distinct callsigns, including JIA5132, JIA5378, JIA5579, JIA5475, JIA5350.