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sensors Mode-S transponder

A84A1A

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N633NN · operated by AMERICAN AIRLINES INC

Hex
A84A1A
Octal
52045032
Decimal
11,029,018
Country
US
Tail
N633NN
Type
CRJ9
No current signal · last broadcast Jul 26, 22:30 UTC
Flights observed
644
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 22:30 UTC

Last known position

Most recent position reported by Mode-S A84A1A.

Country allocation

The ICAO 24-bit address A84A1A 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
JIA5624 PSA Airlines 9 2026-07-23
JIA5611 PSA Airlines 9 2026-04-29
JIA5574 PSA Airlines 8 2026-05-13
JIA5188 PSA Airlines 8 2026-06-20
JIA5559 PSA Airlines 7 2026-07-19
JIA5319 PSA Airlines 7 2026-06-08
JIA5291 PSA Airlines 7 2026-05-03
JIA5274 PSA Airlines 7 2026-06-03
JIA5020 PSA Airlines 7 2026-06-12
JIA5610 PSA Airlines 6 2026-06-04
JIA5605 - 6 2026-06-22
JIA5602 - 6 2026-07-04
JIA5534 PSA Airlines 6 2026-07-20
JIA5508 PSA Airlines 6 2026-05-30
JIA5306 - 6 2026-06-28
JIA5298 - 6 2026-07-11
JIA5242 - 6 2026-07-03
JIA5127 PSA Airlines 6 2026-05-16
JIA5089 PSA Airlines 6 2026-05-29
JIA5051 - 6 2026-07-22

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 JIA5187 DCA → PWM Jul 26, 21:35 UTCJul 26, 22:30 UTC55m
2026-07-26 JIA5163 PHL → IND Jul 26, 17:40 UTCJul 26, 19:30 UTC1h 50m
2026-07-26 JIA5163 PHL → IND Jul 26, 14:40 UTCJul 26, 16:35 UTC1h 55m
2026-07-26 JIA5157 DAY → DFW Jul 26, 11:20 UTCJul 26, 13:10 UTC1h 50m
2026-07-26 JIA5157 DAY → DFW Jul 26, 11:16 UTCJul 26, 13:11 UTC1h 55m
2026-07-26 JIA5245 DCA → ALB Jul 26, 02:10 UTCJul 26, 04:10 UTC2h 0m
2026-07-26 JIA5328 GSO → DCA Jul 26, 00:45 UTCJul 26, 01:00 UTC15m
2026-07-25 JIA5328 GSO → DCA Jul 25, 23:40 UTCJul 26, 01:00 UTC1h 20m
2026-07-25 JIA5328 GSO → DCA Jul 25, 23:38 UTCJul 26, 00:26 UTC48m
2026-07-25 JIA5328 GSO → DCA Jul 25, 21:10 UTCJul 25, 22:35 UTC1h 25m
2026-07-25 JIA5185 PHL → BGR Jul 25, 18:05 UTCJul 25, 19:40 UTC1h 35m
2026-07-25 JIA5185 PHL → BGR Jul 25, 15:35 UTCJul 25, 17:10 UTC1h 35m
2026-07-25 JIA5437 PHL → DTW Jul 25, 12:45 UTCJul 25, 14:10 UTC1h 25m
2026-07-24 JIA5429 CLT → PNS Jul 24, 23:55 UTCJul 25, 01:05 UTC1h 10m
2026-07-24 JIA5265 DFW → SBN Jul 24, 21:45 UTCJul 24, 22:30 UTC45m
2026-07-24 JIA5265 DFW → SBN Jul 24, 20:10 UTCJul 24, 20:55 UTC45m
2026-07-24 JIA5368 HSV → DCA Jul 24, 17:40 UTCJul 24, 18:30 UTC50m
2026-07-24 JIA5368 HSV → DCA Jul 24, 16:15 UTCJul 24, 16:55 UTC40m
2026-07-24 JIA5562 BHM → DCA Jul 24, 12:00 UTCJul 24, 13:50 UTC1h 50m
2026-07-24 JIA5562 BHM → DCA Jul 24, 11:58 UTCJul 24, 13:50 UTC1h 52m
2026-07-24 JIA5608 DCA → GSP Jul 24, 00:55 UTCJul 24, 02:35 UTC1h 40m
2026-07-23 JIA5343 DCA → MSP Jul 23, 21:35 UTCJul 23, 23:10 UTC1h 35m
2026-07-23 JIA5500 LIT → CLT Jul 23, 19:05 UTCJul 23, 20:40 UTC1h 35m
2026-07-23 JIA5136 - Jul 23, 16:25 UTCJul 23, 17:00 UTC35m
2026-07-23 JIA5624 PHL → MCI Jul 23, 13:25 UTCJul 23, 15:05 UTC1h 40m
2026-07-23 JIA5255 PHL → ILM Jul 23, 09:20 UTCJul 23, 10:15 UTC55m
2026-07-23 JIA5255 PHL → ILM Jul 23, 09:16 UTCJul 23, 10:13 UTC57m
2026-07-23 JIA5161 PHL → DAY Jul 23, 02:10 UTCJul 23, 03:05 UTC55m
2026-07-23 JIA5161 PHL → DAY Jul 23, 02:06 UTCJul 23, 03:01 UTC55m
2026-07-22 JIA5040 PHL → CVG Jul 22, 23:50 UTCJul 23, 00:40 UTC50m
2026-07-22 JIA5040 PHL → CVG Jul 22, 22:05 UTCJul 22, 22:50 UTC45m
2026-07-22 JIA5022 DCA → PHL Jul 22, 19:25 UTCJul 22, 20:25 UTC1h 0m
2026-07-22 JIA5022 DCA → PHL Jul 22, 19:21 UTCJul 22, 20:19 UTC58m
2026-07-22 JIA5659 - Jul 22, 16:50 UTCJul 22, 17:55 UTC1h 5m
2026-07-22 JIA5659 CHS → DCA Jul 22, 16:48 UTCJul 22, 17:52 UTC1h 4m
2026-07-22 JIA5659 - Jul 22, 13:55 UTCJul 22, 15:20 UTC1h 25m
2026-07-22 JIA5051 - Jul 22, 11:10 UTCJul 22, 11:20 UTC10m
2026-07-21 JIA9678 CHA → MHT Jul 21, 23:25 UTCJul 22, 01:10 UTC1h 45m
2026-07-21 JIA5224 CLT → CVG Jul 21, 19:15 UTCJul 21, 22:05 UTC2h 50m
2026-07-21 JIA5581 PHL → TYS Jul 21, 15:20 UTCJul 21, 16:15 UTC55m
2026-07-21 JIA5581 PHL → TYS Jul 21, 13:30 UTCJul 21, 14:15 UTC45m
2026-07-21 JIA5445 - Jul 21, 10:40 UTCJul 21, 11:40 UTC1h 0m
2026-07-20 JIA5534 BHM → PHL Jul 20, 22:32 UTCJul 20, 23:48 UTC1h 16m
2026-07-20 JIA5534 BHM → PHL Jul 20, 22:35 UTCJul 20, 23:55 UTC1h 19m
2026-07-20 JIA5543 XNA → PHL Jul 20, 19:00 UTCJul 20, 21:20 UTC2h 20m
2026-07-20 JIA5543 PHL → XNA Jul 20, 15:35 UTCJul 20, 17:50 UTC2h 15m
2026-07-20 JIA5074 - Jul 20, 11:30 UTCJul 20, 13:40 UTC2h 10m
2026-07-20 JIA5545 SYR → DCA Jul 20, 00:05 UTCJul 20, 02:30 UTC2h 25m
2026-07-19 JIA5559 BUF → PHL Jul 19, 19:55 UTCJul 19, 22:15 UTC2h 20m
2026-07-19 JIA5559 BUF → PHL Jul 19, 15:55 UTCJul 19, 18:25 UTC2h 30m

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 N633NN page for operator, model, and routing details .

Mode-S A84A1A frequently asked

What is Mode-S code A84A1A?
A84A1A is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N633NN.
Where is Mode-S A84A1A registered?
Mode-S code A84A1A 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 A84A1A broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 22:30 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A84A1A, octal 52045032, decimal 11,029,018.
What flights does A84A1A operate?
Mode-S A84A1A has broadcast 20 distinct callsigns, including JIA5624, JIA5611, JIA5574, JIA5188, JIA5559.