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sensors Mode-S transponder

A77111

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N579NN · BOMBARDIER Regional Jet CRJ-900 · operated by AMERICAN AIRLINES INC

Hex
A77111
Octal
51670421
Decimal
10,973,457
Country
US
Tail
N579NN
Type
CRJ9
No current signal · last broadcast Jul 26, 22:00 UTC
Flights observed
723
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 22:00 UTC

Last known position

Most recent position reported by Mode-S A77111.

Country allocation

The ICAO 24-bit address A77111 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
JIA5523 - 10 2026-07-09
JIA5147 PSA Airlines 10 2026-07-24
JIA5332 - 9 2026-07-18
JIA5647 PSA Airlines 8 2026-07-22
JIA5591 - 8 2026-07-13
JIA5063 - 8 2026-07-10
JIA5531 PSA Airlines 7 2026-06-13
JIA5402 - 7 2026-07-21
JIA5239 - 7 2026-07-19
JIA5586 PSA Airlines 6 2026-05-16
JIA5580 PSA Airlines 6 2026-06-13
JIA5355 - 6 2026-07-14
JIA5350 - 6 2026-06-29
JIA5279 - 6 2026-07-21
JIA5227 - 6 2026-07-24
JIA5150 - 6 2026-06-30
JIA5109 - 6 2026-06-30
JIA5666 PSA Airlines 5 2026-06-01
JIA5640 - 5 2026-06-25
JIA5637 PSA Airlines 5 2026-07-25

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 JIA5208 CVG → CLT Jul 26, 21:05 UTCJul 26, 22:00 UTC55m
2026-07-26 JIA5308 CMH → DCA Jul 26, 18:20 UTCJul 26, 19:50 UTC1h 30m
2026-07-26 JIA5308 CMH → DCA Jul 26, 18:15 UTCJul 26, 19:51 UTC1h 36m
2026-07-26 JIA5308 CMH → DCA Jul 26, 15:20 UTCJul 26, 17:10 UTC1h 50m
2026-07-26 JIA5615 BHM → PHL Jul 26, 12:30 UTCJul 26, 13:35 UTC1h 5m
2026-07-26 JIA5546 ORF → PHL Jul 26, 01:05 UTCJul 26, 02:05 UTC1h 0m
2026-07-26 JIA5546 ORF → PHL Jul 26, 01:01 UTCJul 26, 02:03 UTC1h 2m
2026-07-25 JIA5637 PHL → BGR Jul 25, 19:45 UTCJul 25, 20:45 UTC1h 0m
2026-07-25 JIA5637 PHL → BGR Jul 25, 17:00 UTCJul 25, 18:00 UTC1h 0m
2026-07-25 JIA5581 PHL → TYS Jul 25, 15:10 UTCJul 25, 15:50 UTC40m
2026-07-25 JIA5581 PHL → TYS Jul 25, 13:30 UTCJul 25, 14:15 UTC45m
2026-07-25 JIA5445 DCA → MHT Jul 25, 10:20 UTCJul 25, 11:20 UTC1h 0m
2026-07-24 JIA5147 CHS → DCA Jul 24, 22:55 UTCJul 25, 00:05 UTC1h 10m
2026-07-24 JIA5227 - Jul 24, 19:00 UTCJul 24, 20:10 UTC1h 10m
2026-07-24 JIA5227 SDF → DCA Jul 24, 18:56 UTCJul 24, 20:01 UTC1h 5m
2026-07-24 JIA5227 - Jul 24, 16:30 UTCJul 24, 17:45 UTC1h 15m
2026-07-24 JIA5089 MHT → PHL Jul 24, 14:15 UTCJul 24, 15:10 UTC55m
2026-07-24 JIA5089 MHT → PHL Jul 24, 11:45 UTCJul 24, 12:45 UTC1h 0m
2026-07-23 JIA5199 PIT → PHL Jul 23, 18:50 UTCJul 23, 19:30 UTC40m
2026-07-23 JIA5300 BDL → PHL Jul 23, 16:20 UTCJul 23, 17:40 UTC1h 20m
2026-07-23 JIA5300 BDL → PHL Jul 23, 16:14 UTCJul 23, 17:36 UTC1h 22m
2026-07-23 JIA5300 BDL → PHL Jul 23, 14:20 UTCJul 23, 15:25 UTC1h 5m
2026-07-23 JIA5216 DCA → TYS Jul 23, 11:15 UTCJul 23, 12:35 UTC1h 20m
2026-07-23 JIA5557 CLT → PVD Jul 23, 04:40 UTCJul 23, 06:15 UTC1h 35m
2026-07-23 JIA5557 CLT → PVD Jul 23, 04:39 UTCJul 23, 06:11 UTC1h 32m
2026-07-23 JIA5098 - Jul 23, 02:05 UTCJul 23, 03:25 UTC1h 20m
2026-07-22 JIA5098 DCA → BTV Jul 22, 23:50 UTCJul 23, 00:55 UTC1h 5m
2026-07-22 JIA5647 BUF → PHL Jul 22, 17:45 UTCJul 22, 19:05 UTC1h 20m
2026-07-22 JIA5647 BUF → PHL Jul 22, 17:44 UTCJul 22, 18:58 UTC1h 14m
2026-07-22 JIA5647 BUF → PHL Jul 22, 15:25 UTCJul 22, 16:35 UTC1h 10m
2026-07-22 JIA5561 DCA → BHM Jul 22, 11:15 UTCJul 22, 12:45 UTC1h 30m
2026-07-22 JIA5267 MKE → CLT Jul 22, 01:25 UTCJul 22, 02:55 UTC1h 30m
2026-07-22 JIA5267 MKE → CLT Jul 22, 01:25 UTCJul 22, 02:53 UTC1h 28m
2026-07-21 JIA5256 DTW → PHL Jul 21, 22:55 UTCJul 21, 23:55 UTC1h 0m
2026-07-21 JIA5256 DTW → PHL Jul 21, 22:50 UTCJul 21, 23:50 UTC1h 0m
2026-07-21 JIA5256 DTW → PHL Jul 21, 20:50 UTCJul 21, 21:45 UTC55m
2026-07-21 JIA5396 - Jul 21, 17:20 UTCJul 21, 19:35 UTC2h 15m
2026-07-21 JIA5120 - Jul 21, 13:55 UTCJul 21, 16:00 UTC2h 5m
2026-07-21 JIA5279 - Jul 21, 10:15 UTCJul 21, 11:45 UTC1h 30m
2026-07-21 JIA5402 PHL → BHM Jul 21, 02:39 UTCJul 21, 04:28 UTC1h 49m
2026-07-21 JIA5402 - Jul 21, 02:40 UTCJul 21, 04:30 UTC1h 50m
2026-07-20 JIA5167 MCI → PHL Jul 20, 23:25 UTCJul 21, 00:45 UTC1h 19m
2026-07-20 JIA5167 MCI → PHL Jul 20, 23:24 UTCJul 21, 00:33 UTC1h 9m
2026-07-20 JIA5167 MCI → PHL Jul 20, 21:10 UTCJul 20, 22:20 UTC1h 10m
2026-07-20 JIA5018 - Jul 20, 18:00 UTCJul 20, 19:35 UTC1h 35m
2026-07-20 JIA5018 PHL → MKE Jul 20, 15:15 UTCJul 20, 17:00 UTC1h 45m
2026-07-20 JIA5626 CLT → ALB Jul 20, 11:15 UTCJul 20, 13:35 UTC2h 20m
2026-07-20 JIA5626 CLT → ALB Jul 20, 11:14 UTCJul 20, 13:29 UTC2h 15m
2026-07-20 JIA5454 PSQ → MSY Jul 20, 00:45 UTCJul 20, 03:10 UTC2h 25m
2026-07-20 JIA5454 - Jul 20, 00:15 UTCJul 20, 00:20 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 N579NN page for operator, model, and routing details .

Mode-S A77111 frequently asked

What is Mode-S code A77111?
A77111 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N579NN.
Where is Mode-S A77111 registered?
Mode-S code A77111 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 A77111 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 22:00 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A77111, octal 51670421, decimal 10,973,457.
What flights does A77111 operate?
Mode-S A77111 has broadcast 20 distinct callsigns, including JIA5523, JIA5147, JIA5332, JIA5647, JIA5591.