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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
No current signal · last broadcast Jul 26, 22:15 UTC
Flights observed
692
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 22:15 UTC

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
JIA5165 - 8 2026-07-14
JIA5304 PSA Airlines 7 2026-06-09
JIA5204 PSA Airlines 7 2026-07-23
JIA5129 - 7 2026-07-19
JIA5076 PSA Airlines 7 2026-05-09
JIA5628 PSA Airlines 6 2026-05-07
JIA5514 - 6 2026-06-16
JIA5415 PSA Airlines 6 2026-07-20
JIA5335 - 6 2026-07-19
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
JIA5600 - 5 2026-07-16
JIA5493 - 5 2026-07-14
JIA5350 - 5 2026-06-22
JIA5168 PSA Airlines 5 2026-06-05

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 JIA5117 YYZ → PHL Jul 26, 22:05 UTCJul 26, 22:15 UTC10m
2026-07-26 JIA5117 YYZ → PHL Jul 26, 20:20 UTCJul 26, 21:10 UTC50m
2026-07-26 JIA5368 HSV → DCA Jul 26, 17:20 UTCJul 26, 18:10 UTC50m
2026-07-26 JIA5368 HSV → DCA Jul 26, 15:50 UTCJul 26, 16:30 UTC40m
2026-07-26 JIA5403 HPN → CLT Jul 26, 12:40 UTCJul 26, 13:25 UTC45m
2026-07-26 JIA5403 HPN → CLT Jul 26, 12:00 UTCJul 26, 12:35 UTC35m
2026-07-25 JIA5016 DCA → BTV Jul 25, 22:45 UTCJul 26, 00:10 UTC1h 25m
2026-07-25 JIA5134 PVD → CLT Jul 25, 20:20 UTCJul 25, 21:15 UTC55m
2026-07-25 JIA5134 PVD → CLT Jul 25, 18:05 UTCJul 25, 19:05 UTC1h 0m
2026-07-25 JIA5349 PHL → PVD Jul 25, 15:15 UTCJul 25, 16:20 UTC1h 5m
2026-07-25 JIA5349 PHL → PVD Jul 25, 13:20 UTCJul 25, 14:30 UTC1h 10m
2026-07-25 JIA5255 PHL → ILM Jul 25, 09:20 UTCJul 25, 10:15 UTC55m
2026-07-25 JIA5161 PHL → DAY Jul 25, 01:45 UTCJul 25, 02:35 UTC50m
2026-07-25 JIA5161 PHL → DAY Jul 25, 01:42 UTCJul 25, 02:34 UTC52m
2026-07-24 JIA5040 PHL → CVG Jul 24, 23:35 UTCJul 25, 00:15 UTC40m
2026-07-24 JIA5040 PHL → CVG Jul 24, 21:55 UTCJul 24, 22:35 UTC40m
2026-07-24 JIA5595 STL → DCA Jul 24, 14:00 UTCJul 24, 19:15 UTC5h 15m
2026-07-24 JIA5477 PHL → MKE Jul 24, 00:23 UTCJul 24, 01:04 UTC41m
2026-07-24 JIA5477 PHL → MKE Jul 24, 00:25 UTCJul 24, 01:25 UTC1h 0m
2026-07-23 JIA5106 BUF → PHL Jul 23, 22:10 UTCJul 23, 23:00 UTC50m
2026-07-23 JIA5106 BUF → PHL Jul 23, 22:09 UTCJul 23, 22:42 UTC33m
2026-07-23 JIA5106 BUF → PHL Jul 23, 20:00 UTCJul 23, 20:50 UTC50m
2026-07-23 JIA5204 ALB → DCA Jul 23, 17:25 UTCJul 23, 18:40 UTC1h 15m
2026-07-23 JIA5204 ALB → DCA Jul 23, 15:00 UTCJul 23, 15:55 UTC55m
2026-07-23 JIA530R - Jul 23, 12:00 UTCJul 23, 13:20 UTC1h 20m
2026-07-22 JIA5300 BDL → PHL Jul 22, 17:50 UTCJul 22, 18:45 UTC55m
2026-07-22 JIA5216 DCA → TYS Jul 22, 11:15 UTCJul 22, 12:45 UTC1h 30m
2026-07-22 JIA5216 DCA → TYS Jul 22, 11:12 UTCJul 22, 12:38 UTC1h 26m
2026-07-22 JIA5557 - Jul 22, 03:40 UTCJul 22, 05:10 UTC1h 30m
2026-07-21 JIA5089 MHT → PHL Jul 21, 13:40 UTCJul 21, 14:30 UTC50m
2026-07-21 JIA5089 MHT → PHL Jul 21, 11:40 UTCJul 21, 12:30 UTC50m
2026-07-20 JIA5106 BUF → PHL Jul 20, 22:55 UTCJul 20, 23:50 UTC55m
2026-07-20 JIA5106 BUF → PHL Jul 20, 20:50 UTCJul 20, 21:40 UTC50m
2026-07-20 JIA5204 - Jul 20, 17:15 UTCJul 20, 18:25 UTC1h 10m
2026-07-20 JIA5204 - Jul 20, 15:00 UTCJul 20, 15:55 UTC55m
2026-07-20 JIA5441 CAE → DCA Jul 20, 11:40 UTCJul 20, 13:25 UTC1h 45m
2026-07-20 JIA5415 ALB → CLT Jul 20, 00:00 UTCJul 20, 02:00 UTC2h 0m
2026-07-19 JIA5415 ALB → CLT Jul 19, 23:45 UTCJul 19, 23:50 UTC5m
2026-07-19 JIA5129 - Jul 19, 21:30 UTCJul 19, 22:25 UTC55m
2026-07-19 JIA5129 - Jul 19, 19:10 UTCJul 19, 20:15 UTC1h 5m
2026-07-19 JIA5430 - Jul 19, 16:20 UTCJul 19, 17:40 UTC1h 20m
2026-07-19 JIA5433 - Jul 19, 13:35 UTCJul 19, 15:05 UTC1h 30m
2026-07-19 JIA5036 - Jul 19, 11:05 UTCJul 19, 11:50 UTC45m
2026-07-19 JIA5335 PHL → ORF Jul 19, 02:48 UTCJul 19, 03:25 UTC37m
2026-07-19 JIA5335 PHL → ORF Jul 19, 02:50 UTCJul 19, 03:30 UTC40m
2026-07-18 JIA5018 - Jul 18, 23:45 UTCJul 19, 01:15 UTC1h 30m
2026-07-18 JIA5018 MKE → PHL Jul 18, 23:43 UTCJul 19, 01:14 UTC1h 31m
2026-07-18 JIA5018 PHL → MKE Jul 18, 20:50 UTCJul 18, 22:55 UTC2h 5m
2026-07-18 JIA5018 PHL → PHL Jul 18, 18:15 UTCJul 18, 18:20 UTC5m
2026-07-18 JIA5018 PHL → PHL Jul 18, 17:25 UTCJul 18, 17:30 UTC5m

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?
No active broadcast right now. Last signal was Jul 26, 22:15 UTC.
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, JIA5165, JIA5304, JIA5204, JIA5129.