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sensors Mode-S transponder

A7B8A1

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N597NN · BOMBARDIER Regional Jet CRJ-900 · operated by AMERICAN AIRLINES INC

Hex
A7B8A1
Octal
51734241
Decimal
10,991,777
Country
US
Tail
N597NN
Type
CRJ9
Transponder active on ground
Flights observed
601
Distinct callsigns
20
Country
US
Last broadcast
1h ago

Last known position

Most recent position reported by Mode-S A7B8A1.

Country allocation

The ICAO 24-bit address A7B8A1 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
JIA5175 PSA Airlines 9 2026-06-12
JIA5304 PSA Airlines 7 2026-06-09
JIA5076 PSA Airlines 7 2026-05-09
JIA5628 PSA Airlines 6 2026-05-07
JIA5514 - 6 2026-06-16
JIA5136 PSA Airlines 6 2026-05-05
JIA5109 - 6 2026-06-24
JIA5020 PSA Airlines 6 2026-05-12
JIA5650 PSA Airlines 5 2026-05-10
JIA5627 - 5 2026-06-21
JIA5615 - 5 2026-04-13
JIA5350 - 5 2026-06-22
JIA5168 PSA Airlines 5 2026-06-05
JIA5165 PSA Airlines 5 2026-06-17
JIA5160 - 5 2026-06-28
JIA5156 PSA Airlines 5 2026-06-09
JIA5090 PSA Airlines 5 2026-05-09
JIA5052 PSA Airlines 5 2026-06-01
JIA5668 PSA Airlines 4 2026-05-04
JIA5570 - 4 2026-06-15

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 JIA5167 - Jul 14, 00:30 UTCJul 14, 01:45 UTC1h 15m
2026-07-13 JIA5167 - Jul 13, 22:30 UTCJul 13, 23:35 UTC1h 5m
2026-07-13 JIA5167 - Jul 13, 21:55 UTCJul 13, 22:00 UTC5m
2026-07-13 JIA5189 - Jul 13, 20:10 UTCJul 13, 21:10 UTC1h 0m
2026-07-13 JIA5189 PHL → PVD Jul 13, 17:45 UTCJul 13, 18:40 UTC55m
2026-07-13 JIA5576 - Jul 13, 15:55 UTCJul 13, 16:50 UTC55m
2026-07-13 JIA5576 - Jul 13, 15:05 UTCJul 13, 16:15 UTC1h 10m
2026-07-12 JIA5576 PHL → BNA Jul 12, 13:45 UTCJul 12, 15:25 UTC1h 40m
2026-07-12 JIA5271 - Jul 12, 11:50 UTCJul 12, 12:30 UTC40m
2026-07-12 JIA5271 ORF → PHL Jul 12, 11:50 UTCJul 12, 12:29 UTC39m
2026-07-12 JIA5662 DCA → ORF Jul 12, 02:25 UTCJul 12, 02:55 UTC30m
2026-07-11 JIA5505 BGR → DCA Jul 11, 22:02 UTCJul 11, 23:36 UTC1h 34m
2026-07-11 JIA5505 BGR → DCA Jul 11, 22:05 UTCJul 11, 23:40 UTC1h 35m
2026-07-11 JIA5505 DCA → BGR Jul 11, 19:00 UTCJul 11, 20:20 UTC1h 20m
2026-07-11 JIA5647 - Jul 11, 16:55 UTCJul 11, 18:00 UTC1h 5m
2026-07-11 JIA5647 TYS → DCA Jul 11, 16:54 UTCJul 11, 18:05 UTC1h 11m
2026-07-11 JIA5647 - Jul 11, 13:45 UTCJul 11, 14:50 UTC1h 5m
2026-07-11 JIA5244 - Jul 11, 11:00 UTCJul 11, 12:00 UTC1h 0m
2026-07-11 JIA5597 DCA → DTW Jul 11, 03:25 UTCJul 11, 04:30 UTC1h 5m
2026-07-10 JIA5251 - Jul 10, 23:50 UTCJul 11, 00:55 UTC1h 5m
2026-07-10 JIA5251 - Jul 10, 21:45 UTCJul 10, 22:50 UTC1h 5m
2026-07-10 JIA5126 - Jul 10, 19:25 UTCJul 10, 20:20 UTC55m
2026-07-10 JIA5126 DCA → CLE Jul 10, 16:45 UTCJul 10, 17:45 UTC1h 0m
2026-07-09 JIA5126 - Jul 9, 23:40 UTCJul 10, 00:40 UTC1h 0m
2026-07-09 JIA5126 - Jul 9, 17:15 UTCJul 9, 18:25 UTC1h 10m
2026-07-09 JIA5400 - Jul 9, 14:05 UTCJul 9, 15:10 UTC1h 5m
2026-07-09 JIA5227 DCA → SDF Jul 9, 11:33 UTCJul 9, 12:47 UTC1h 14m
2026-07-09 JIA5227 DCA → SDF Jul 9, 11:35 UTCJul 9, 12:55 UTC1h 20m
2026-07-09 JIA5101 - Jul 9, 09:05 UTCJul 9, 10:10 UTC1h 5m
2026-07-09 JIA5065 - Jul 9, 02:55 UTCJul 9, 04:05 UTC1h 10m
2026-07-09 JIA5065 DCA → ALB Jul 9, 02:54 UTCJul 9, 03:54 UTC1h 0m
2026-07-09 JIA5251 - Jul 9, 00:05 UTCJul 9, 01:15 UTC1h 10m
2026-07-08 JIA5251 - Jul 8, 22:10 UTCJul 8, 23:15 UTC1h 5m
2026-07-08 JIA5207 MYR → PHL Jul 8, 19:15 UTCJul 8, 20:41 UTC1h 26m
2026-07-08 JIA5207 MYR → PHL Jul 8, 19:20 UTCJul 8, 20:40 UTC1h 20m
2026-07-08 JIA5207 MYR → PHL Jul 8, 16:15 UTCJul 8, 17:35 UTC1h 20m
2026-07-08 JIA5089 - Jul 8, 13:40 UTCJul 8, 14:35 UTC55m
2026-07-08 JIA5089 DCA → CMH Jul 8, 11:45 UTCJul 8, 12:35 UTC50m
2026-07-07 JIA5199 - Jul 7, 23:10 UTCJul 8, 00:15 UTC1h 5m
2026-07-07 JIA5199 - Jul 7, 18:30 UTCJul 7, 19:35 UTC1h 5m
2026-07-07 JIA509S - Jul 7, 13:05 UTCJul 7, 14:15 UTC1h 10m
2026-07-06 JIA5098 - Jul 6, 20:20 UTCJul 6, 21:25 UTC1h 5m
2026-07-06 JIA5204 - Jul 6, 17:25 UTCJul 6, 18:25 UTC1h 0m
2026-07-06 JIA5204 GSP → DCA Jul 6, 17:21 UTCJul 6, 18:24 UTC1h 3m
2026-07-06 JIA5204 - Jul 6, 15:20 UTCJul 6, 16:15 UTC55m
2026-07-06 JIA5312 MSP → DCA Jul 6, 11:50 UTCJul 6, 13:50 UTC2h 0m
2026-07-06 JIA9969 DCA → PHL Jul 6, 04:20 UTCJul 6, 06:05 UTC1h 45m
2026-07-06 JIA5375 - Jul 6, 00:00 UTCJul 6, 01:10 UTC1h 10m
2026-07-05 JIA5200 DCA → HSV Jul 5, 20:06 UTCJul 5, 21:44 UTC1h 38m
2026-07-05 JIA5200 DCA → HSV Jul 5, 19:15 UTCJul 5, 19:50 UTC35m

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 N597NN page for operator, model, and routing details .

Mode-S A7B8A1 frequently asked

What is Mode-S code A7B8A1?
A7B8A1 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N597NN.
Where is Mode-S A7B8A1 registered?
Mode-S code A7B8A1 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 A7B8A1 broadcasting right now?
Mode-S A7B8A1 is currently broadcasting from the ground.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A7B8A1, octal 51734241, decimal 10,991,777.
What flights does A7B8A1 operate?
Mode-S A7B8A1 has broadcast 20 distinct callsigns, including JIA5175, JIA5304, JIA5076, JIA5628, JIA5514.