Apparatus

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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 1d ago
Flights observed
573
Distinct callsigns
20
Country
US
Last broadcast
1d ago

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
JIA5611 PSA Airlines 9 2026-04-29
JIA5624 - 8 2026-07-12
JIA5574 PSA Airlines 8 2026-05-13
JIA5188 PSA Airlines 8 2026-06-20
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
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
JIA5657 PSA Airlines 5 2026-05-13
JIA5511 - 5 2026-07-08
JIA5490 PSA Airlines 5 2026-05-02

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-12 JIA5136 - Jul 12, 17:35 UTCJul 12, 18:20 UTC45m
2026-07-12 JIA5624 - Jul 12, 13:40 UTCJul 12, 15:25 UTC1h 45m
2026-07-12 JIA5624 CLT → SHV Jul 12, 13:39 UTCJul 12, 15:27 UTC1h 48m
2026-07-12 JIA5214 - Jul 12, 10:15 UTCJul 12, 11:20 UTC1h 5m
2026-07-12 JIA5214 DAB → CLT Jul 12, 10:10 UTCJul 12, 11:19 UTC1h 9m
2026-07-12 JIA5613 - Jul 12, 06:55 UTCJul 12, 07:55 UTC1h 0m
2026-07-11 JIA5298 - Jul 11, 21:55 UTCJul 11, 23:10 UTC1h 15m
2026-07-11 JIA5298 MLB → CLT Jul 11, 21:51 UTCJul 11, 23:11 UTC1h 20m
2026-07-11 JIA5298 - Jul 11, 19:50 UTCJul 11, 21:05 UTC1h 15m
2026-07-11 JIA5143 - Jul 11, 15:25 UTCJul 11, 16:15 UTC50m
2026-07-11 JIA5143 - Jul 11, 13:45 UTCJul 11, 14:25 UTC40m
2026-07-11 JIA5386 - Jul 11, 10:10 UTCJul 11, 11:25 UTC1h 15m
2026-07-11 JIA5364 - Jul 11, 05:31 UTCJul 11, 06:40 UTC1h 10m
2026-07-11 JIA5086 - Jul 11, 03:30 UTCJul 11, 04:01 UTC30m
2026-07-11 JIA5086 - Jul 11, 01:20 UTCJul 11, 01:55 UTC35m
2026-07-10 JIA5370 - Jul 10, 23:10 UTCJul 10, 23:55 UTC45m
2026-07-10 JIA5370 - Jul 10, 21:25 UTCJul 10, 22:10 UTC45m
2026-07-10 JIA5182 - Jul 10, 17:10 UTCJul 10, 17:45 UTC35m
2026-07-08 JIA5511 - Jul 8, 06:30 UTCJul 8, 07:00 UTC30m
2026-07-08 JIA5511 CLT → TYS Jul 8, 06:25 UTCJul 8, 06:57 UTC32m
2026-07-08 JIA5196 - Jul 8, 03:10 UTCJul 8, 03:50 UTC40m
2026-07-08 JIA5196 - Jul 8, 01:35 UTCJul 8, 02:15 UTC40m
2026-07-07 JIA5612 - Jul 7, 12:10 UTCJul 7, 13:45 UTC1h 35m
2026-07-07 JIA5539 - Jul 7, 07:00 UTCJul 7, 08:35 UTC1h 35m
2026-07-07 JIA5030 - Jul 7, 02:10 UTCJul 7, 04:05 UTC1h 55m
2026-07-07 JIA5030 YYZ → CLT Jul 7, 02:07 UTCJul 7, 04:03 UTC1h 56m
2026-07-06 JIA5030 - Jul 6, 23:20 UTCJul 7, 00:50 UTC1h 30m
2026-07-06 JIA5265 - Jul 6, 20:50 UTCJul 6, 21:40 UTC50m
2026-07-06 JIA5265 - Jul 6, 19:15 UTCJul 6, 20:05 UTC50m
2026-07-06 JIA5650 - Jul 6, 16:15 UTCJul 6, 17:40 UTC1h 25m
2026-07-06 JIA5650 - Jul 6, 14:00 UTCJul 6, 15:15 UTC1h 15m
2026-07-06 JIA5056 - Jul 6, 10:55 UTCJul 6, 11:30 UTC35m
2026-07-06 JIA5263 - Jul 6, 03:55 UTCJul 6, 04:35 UTC40m
2026-07-06 JIA5141 - Jul 6, 02:00 UTCJul 6, 02:35 UTC35m
2026-07-06 JIA5141 - Jul 6, 00:00 UTCJul 6, 00:40 UTC40m
2026-07-05 JIA5397 - Jul 5, 20:15 UTCJul 5, 21:20 UTC1h 5m
2026-07-05 JIA5397 SDF → CLT Jul 5, 20:12 UTCJul 5, 21:12 UTC1h 0m
2026-07-05 JIA5397 - Jul 5, 17:50 UTCJul 5, 18:50 UTC1h 0m
2026-07-05 JIA5143 - Jul 5, 15:25 UTCJul 5, 16:05 UTC40m
2026-07-05 JIA5143 CRW → CLT Jul 5, 15:22 UTCJul 5, 16:04 UTC42m
2026-07-05 JIA5143 - Jul 5, 13:25 UTCJul 5, 14:05 UTC40m
2026-07-05 JIA5386 - Jul 5, 10:10 UTCJul 5, 11:25 UTC1h 15m
2026-07-04 JIA5298 - Jul 4, 20:15 UTCJul 4, 21:25 UTC1h 10m
2026-07-04 JIA5316 - Jul 4, 17:35 UTCJul 4, 19:00 UTC1h 25m
2026-07-04 JIA5316 MEM → CLT Jul 4, 17:29 UTCJul 4, 18:44 UTC1h 15m
2026-07-04 JIA5316 - Jul 4, 14:45 UTCJul 4, 16:00 UTC1h 15m
2026-07-04 JIA5538 - Jul 4, 12:10 UTCJul 4, 13:25 UTC1h 15m
2026-07-04 JIA5538 GPT → CLT Jul 4, 12:03 UTCJul 4, 13:25 UTC1h 22m
2026-07-04 JIA5533 - Jul 4, 04:05 UTCJul 4, 05:20 UTC1h 15m
2026-07-04 JIA5602 - Jul 4, 00:25 UTCJul 4, 01:20 UTC55m

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 1d ago.
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 JIA5611, JIA5624, JIA5574, JIA5188, JIA5319.