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sensors Mode-S transponder

A7AD7C

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N594NN · BOMBARDIER Regional Jet CRJ-900 · operated by AMERICAN AIRLINES INC

Hex
A7AD7C
Octal
51726574
Decimal
10,988,924
Country
US
Tail
N594NN
Type
CRJ9
No current signal · last broadcast Jul 26, 21:35 UTC
Flights observed
724
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 21:35 UTC

Last known position

Most recent position reported by Mode-S A7AD7C.

Country allocation

The ICAO 24-bit address A7AD7C 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
JIA5621 - 13 2026-07-10
JIA5610 - 10 2026-07-02
JIA5383 PSA Airlines 9 2026-06-12
JIA5592 - 8 2026-07-10
JIA5616 PSA Airlines 7 2026-06-01
JIA5581 PSA Airlines 7 2026-05-13
JIA5541 PSA Airlines 7 2026-07-21
JIA5489 PSA Airlines 7 2026-07-20
JIA5266 - 7 2026-07-12
JIA5256 PSA Airlines 7 2026-07-18
JIA5658 - 6 2026-06-26
JIA5420 PSA Airlines 6 2026-06-09
JIA5416 PSA Airlines 6 2026-05-03
JIA5308 PSA Airlines 6 2026-05-25
JIA5268 PSA Airlines 6 2026-05-03
JIA5045 PSA Airlines 6 2026-05-16
JIA5020 - 6 2026-07-07
JIA5655 PSA Airlines 5 2026-06-06
JIA5460 - 5 2026-07-04
JIA5443 PSA Airlines 5 2026-05-16

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 JIA5249 MEM → PHL Jul 26, 20:20 UTCJul 26, 21:35 UTC1h 15m
2026-07-26 JIA5469 BUF → DCA Jul 26, 16:40 UTCJul 26, 18:45 UTC2h 5m
2026-07-26 JIA5469 BUF → DCA Jul 26, 16:38 UTCJul 26, 18:44 UTC2h 6m
2026-07-26 JIA5469 BUF → DCA Jul 26, 13:45 UTCJul 26, 15:45 UTC2h 0m
2026-07-26 JIA5620 TYS → PHL Jul 26, 10:15 UTCJul 26, 11:50 UTC1h 35m
2026-07-23 JIA5066 PHL → TYS Jul 23, 00:55 UTCJul 23, 02:20 UTC1h 25m
2026-07-22 JIA5189 SBN → CLT Jul 22, 20:35 UTCJul 22, 21:25 UTC50m
2026-07-22 JIA5189 SBN → CLT Jul 22, 20:33 UTCJul 22, 21:24 UTC51m
2026-07-22 JIA5189 SBN → CLT Jul 22, 18:55 UTCJul 22, 19:40 UTC45m
2026-07-22 JIA5605 PIT → DCA Jul 22, 16:05 UTCJul 22, 17:25 UTC1h 20m
2026-07-22 JIA5605 PIT → DCA Jul 22, 13:25 UTCJul 22, 14:45 UTC1h 20m
2026-07-21 JIA5609 IND → CLT Jul 21, 22:35 UTCJul 22, 00:30 UTC1h 55m
2026-07-21 JIA5541 PHL → ORF Jul 21, 18:40 UTCJul 21, 20:50 UTC2h 10m
2026-07-21 JIA5541 PHL → ORF Jul 21, 15:30 UTCJul 21, 17:30 UTC2h 0m
2026-07-21 JIA5296 SAV → PHL Jul 21, 12:10 UTCJul 21, 13:05 UTC55m
2026-07-21 JIA5296 SAV → PHL Jul 21, 12:09 UTCJul 21, 13:04 UTC55m
2026-07-21 JIA5168 CHS → DCA Jul 21, 04:00 UTCJul 21, 04:50 UTC50m
2026-07-21 JIA5115 PHL → BGR Jul 21, 01:05 UTCJul 21, 02:35 UTC1h 30m
2026-07-20 JIA5115 PHL → BGR Jul 20, 22:30 UTCJul 21, 00:10 UTC1h 40m
2026-07-20 JIA5109 HSV → DCA Jul 20, 19:00 UTCJul 20, 21:20 UTC2h 20m
2026-07-20 JIA5109 HSV → DCA Jul 20, 15:50 UTCJul 20, 17:50 UTC2h 0m
2026-07-20 JIA5489 BNA → PHL Jul 20, 12:25 UTCJul 20, 14:40 UTC2h 15m
2026-07-20 JIA5466 DCA → BDL Jul 20, 01:05 UTCJul 20, 03:25 UTC2h 20m
2026-07-19 JIA5063 LIT → CLT Jul 19, 20:20 UTCJul 19, 21:50 UTC1h 30m
2026-07-19 JIA5063 LIT → CLT Jul 19, 17:55 UTCJul 19, 19:15 UTC1h 20m
2026-07-19 JIA5071 PHL → ORF Jul 19, 15:35 UTCJul 19, 16:20 UTC45m
2026-07-19 JIA5071 PHL → ORF Jul 19, 13:35 UTCJul 19, 14:20 UTC45m
2026-07-19 JIA5279 - Jul 19, 10:05 UTCJul 19, 11:35 UTC1h 30m
2026-07-19 JIA5279 BHM → DFW Jul 19, 10:04 UTCJul 19, 11:20 UTC1h 16m
2026-07-19 JIA5267 - Jul 19, 01:35 UTCJul 19, 02:55 UTC1h 20m
2026-07-18 JIA5256 DTW → PHL Jul 18, 22:45 UTCJul 18, 23:45 UTC1h 0m
2026-07-18 JIA5256 DTW → PHL Jul 18, 22:41 UTCJul 18, 23:42 UTC1h 1m
2026-07-18 JIA5256 DTW → PHL Jul 18, 20:55 UTCJul 18, 21:40 UTC45m
2026-07-18 JIA5489 ROA → DFW Jul 18, 13:20 UTCJul 18, 15:35 UTC2h 15m
2026-07-18 JIA5466 DCA → BDL Jul 18, 00:35 UTCJul 18, 03:00 UTC2h 26m
2026-07-17 JIA5565 DCA → ORF Jul 17, 11:20 UTCJul 17, 13:25 UTC2h 5m
2026-07-17 JIA5565 DCA → ORF Jul 17, 11:15 UTCJul 17, 13:20 UTC2h 5m
2026-07-17 JIA5523 CVG → DCA Jul 17, 03:25 UTCJul 17, 05:25 UTC2h 0m
2026-07-17 JIA5523 CVG → DCA Jul 17, 03:25 UTCJul 17, 05:23 UTC1h 58m
2026-07-17 JIA5256 DTW → PHL Jul 17, 00:55 UTCJul 17, 01:59 UTC1h 5m
2026-07-17 JIA5256 DTW → PHL Jul 17, 00:52 UTCJul 17, 02:01 UTC1h 9m
2026-07-16 JIA5256 DTW → PHL Jul 16, 22:00 UTCJul 16, 22:55 UTC55m
2026-07-16 JIA5396 - Jul 16, 17:05 UTCJul 16, 19:20 UTC2h 15m
2026-07-16 JIA5120 - Jul 16, 14:05 UTCJul 16, 16:09 UTC2h 5m
2026-07-16 JIA5425 - Jul 16, 11:10 UTCJul 16, 13:00 UTC1h 50m
2026-07-16 JIA5425 TYS → DFW Jul 16, 11:07 UTCJul 16, 12:47 UTC1h 40m
2026-07-15 JIA5453 - Jul 15, 23:55 UTCJul 16, 01:35 UTC1h 40m
2026-07-15 JIA5453 DFW → TYS Jul 15, 23:53 UTCJul 16, 01:35 UTC1h 42m
2026-07-15 JIA5185 - Jul 15, 18:35 UTCJul 15, 20:40 UTC2h 5m
2026-07-15 JIA5185 DFW → ECP Jul 15, 15:55 UTCJul 15, 17:35 UTC1h 40m

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 N594NN page for operator, model, and routing details .

Mode-S A7AD7C frequently asked

What is Mode-S code A7AD7C?
A7AD7C is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N594NN.
Where is Mode-S A7AD7C registered?
Mode-S code A7AD7C 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 A7AD7C broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 21:35 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A7AD7C, octal 51726574, decimal 10,988,924.
What flights does A7AD7C operate?
Mode-S A7AD7C has broadcast 20 distinct callsigns, including JIA5621, JIA5610, JIA5383, JIA5592, JIA5616.