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sensors Mode-S transponder

A84DD1

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N634NN · operated by AMERICAN AIRLINES INC

Hex
A84DD1
Octal
52046721
Decimal
11,029,969
Country
US
Tail
N634NN
Type
CRJ9
Broadcasting now · callsign JIA5431 · 16,900 ft
Flights observed
726
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 22:15 UTC

Current position

A84DD1 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address A84DD1 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
JIA5579 - 10 2026-06-19
JIA5666 PSA Airlines 9 2026-06-02
JIA5640 - 9 2026-07-15
JIA5249 - 9 2026-07-17
JIA5039 PSA Airlines 9 2026-07-22
JIA5628 - 8 2026-06-26
JIA5536 PSA Airlines 8 2026-05-11
JIA5417 PSA Airlines 8 2026-05-16
JIA5586 PSA Airlines 7 2026-05-19
JIA5626 - 6 2026-07-14
JIA5592 PSA Airlines 6 2026-06-12
JIA5583 - 6 2026-07-14
JIA5514 PSA Airlines 6 2026-06-10
JIA5397 - 6 2026-07-03
JIA5336 PSA Airlines 6 2026-05-18
JIA5189 - 6 2026-07-10
JIA5173 PSA Airlines 6 2026-07-23
JIA5631 - 5 2026-07-15
JIA5627 - 5 2026-07-20
JIA5581 - 5 2026-07-11

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 JIA5026 ALB → PHL Jul 26, 20:15 UTCJul 26, 22:15 UTC2h 0m
2026-07-26 JIA5026 ALB → PHL Jul 26, 17:20 UTCJul 26, 19:15 UTC1h 55m
2026-07-26 JIA5442 DCA → CHS Jul 26, 14:45 UTCJul 26, 15:30 UTC45m
2026-07-26 JIA5442 DCA → CHS Jul 26, 13:05 UTCJul 26, 13:55 UTC50m
2026-07-26 JIA5279 PHL → CHS Jul 26, 10:10 UTCJul 26, 11:30 UTC1h 20m
2026-07-26 JIA5402 SYR → CLT Jul 26, 02:15 UTCJul 26, 03:55 UTC1h 40m
2026-07-25 JIA5394 CMH → PHL Jul 25, 23:35 UTCJul 26, 00:55 UTC1h 20m
2026-07-25 JIA5394 CMH → PHL Jul 25, 23:30 UTCJul 26, 00:53 UTC1h 23m
2026-07-25 JIA5394 CMH → PHL Jul 25, 20:55 UTCJul 25, 22:30 UTC1h 35m
2026-07-25 JIA5293 DCA → ATL Jul 25, 17:00 UTCJul 25, 19:15 UTC2h 15m
2026-07-25 JIA5293 DCA → ATL Jul 25, 16:57 UTCJul 25, 19:13 UTC2h 16m
2026-07-25 JIA5293 DCA → ATL Jul 25, 13:40 UTCJul 25, 16:05 UTC2h 25m
2026-07-25 JIA5170 PHL → MHT Jul 25, 10:20 UTCJul 25, 11:25 UTC1h 5m
2026-07-25 JIA5170 PHL → MHT Jul 25, 10:19 UTCJul 25, 11:16 UTC57m
2026-07-25 JIA5169 PHL → MSN Jul 25, 02:25 UTCJul 25, 03:40 UTC1h 15m
2026-07-24 JIA5394 CMH → PHL Jul 24, 22:50 UTCJul 25, 00:10 UTC1h 20m
2026-07-24 JIA5394 CMH → PHL Jul 24, 20:20 UTCJul 24, 21:55 UTC1h 35m
2026-07-24 JIA5469 - Jul 24, 17:15 UTCJul 24, 19:15 UTC2h 0m
2026-07-24 JIA5469 PNS → PHL Jul 24, 17:10 UTCJul 24, 19:13 UTC2h 3m
2026-07-24 JIA5469 PHL → PNS Jul 24, 14:05 UTCJul 24, 16:15 UTC2h 10m
2026-07-24 JIA5494 PIT → PHL Jul 24, 11:15 UTCJul 24, 12:30 UTC1h 15m
2026-07-24 JIA5493 PWM → PHL Jul 24, 03:00 UTCJul 24, 04:20 UTC1h 20m
2026-07-24 JIA5493 PWM → PHL Jul 24, 02:56 UTCJul 24, 04:19 UTC1h 23m
2026-07-24 JIA5183 IND → DCA Jul 24, 01:10 UTCJul 24, 02:00 UTC50m
2026-07-23 JIA5183 IND → DCA Jul 23, 23:30 UTCJul 24, 00:15 UTC45m
2026-07-23 JIA5173 PHL → PVD Jul 23, 21:15 UTCJul 23, 21:40 UTC25m
2026-07-23 JIA5173 PHL → PVD Jul 23, 19:40 UTCJul 23, 21:40 UTC2h 0m
2026-07-23 JIA5173 PHL → PVD Jul 23, 19:05 UTCJul 23, 20:59 UTC1h 54m
2026-07-23 JIA5173 PHL → PVD Jul 23, 15:35 UTCJul 23, 17:40 UTC2h 5m
2026-07-23 JIA5130 CVG → PHL Jul 23, 12:15 UTCJul 23, 13:30 UTC1h 15m
2026-07-23 JIA5130 CVG → PHL Jul 23, 12:12 UTCJul 23, 13:28 UTC1h 16m
2026-07-23 JIA5504 GSP → PHL Jul 23, 03:45 UTCJul 23, 04:00 UTC15m
2026-07-23 JIA5250 DCA → SDF Jul 23, 01:45 UTCJul 23, 02:35 UTC50m
2026-07-23 JIA5250 DCA → SDF Jul 23, 01:40 UTCJul 23, 02:36 UTC56m
2026-07-22 JIA5250 DCA → SDF Jul 22, 23:40 UTCJul 23, 00:45 UTC1h 5m
2026-07-22 JIA5370 MSN → CLT Jul 22, 21:15 UTCJul 22, 22:15 UTC1h 0m
2026-07-22 JIA5370 MSN → CLT Jul 22, 18:15 UTCJul 22, 19:00 UTC45m
2026-07-22 JIA5039 GRR → DCA Jul 22, 15:45 UTCJul 22, 16:35 UTC50m
2026-07-22 JIA5039 GRR → DCA Jul 22, 14:10 UTCJul 22, 14:55 UTC45m
2026-07-22 JIA5613 DCA → PVD Jul 22, 04:05 UTCJul 22, 05:05 UTC1h 0m
2026-07-22 JIA5250 DCA → SDF Jul 22, 01:30 UTCJul 22, 02:20 UTC50m
2026-07-21 JIA5250 DCA → SDF Jul 21, 23:15 UTCJul 22, 00:15 UTC1h 0m
2026-07-21 JIA5134 - Jul 21, 20:15 UTCJul 21, 21:05 UTC50m
2026-07-21 JIA5134 - Jul 21, 18:00 UTCJul 21, 18:55 UTC55m
2026-07-21 JIA5083 - Jul 21, 15:55 UTCJul 21, 16:45 UTC50m
2026-07-21 JIA5083 BNA → CLT Jul 21, 15:51 UTCJul 21, 16:43 UTC52m
2026-07-21 JIA5083 - Jul 21, 13:50 UTCJul 21, 14:50 UTC1h 0m
2026-07-21 JIA5035 - Jul 21, 09:55 UTCJul 21, 11:45 UTC1h 50m
2026-07-21 JIA5035 MHT → CLT Jul 21, 09:50 UTCJul 21, 11:44 UTC1h 54m
2026-07-21 JIA5033 VPS → PHL Jul 21, 01:10 UTCJul 21, 02:55 UTC1h 45m

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 N634NN page for operator, model, and routing details .

Mode-S A84DD1 frequently asked

What is Mode-S code A84DD1?
A84DD1 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N634NN.
Where is Mode-S A84DD1 registered?
Mode-S code A84DD1 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 A84DD1 broadcasting right now?
Yes. Mode-S A84DD1 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A84DD1, octal 52046721, decimal 11,029,969.
What flights does A84DD1 operate?
Mode-S A84DD1 has broadcast 20 distinct callsigns, including JIA5579, JIA5666, JIA5640, JIA5249, JIA5039.