Apparatus

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sensors Mode-S transponder

A769A3

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N577NN · BOMBARDIER Regional Jet CRJ-900 · operated by AMERICAN AIRLINES INC

Hex
A769A3
Octal
51664643
Decimal
10,971,555
Country
US
Tail
N577NN
Type
CRJ9
No current signal · last broadcast 2h ago
Flights observed
639
Distinct callsigns
20
Country
US
Last broadcast
2h ago

Last known position

Most recent position reported by Mode-S A769A3.

Country allocation

The ICAO 24-bit address A769A3 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
JIA5389 - 10 2026-07-11
JIA5377 - 9 2026-07-12
JIA5599 PSA Airlines 8 2026-05-05
JIA5579 PSA Airlines 8 2026-06-09
JIA5020 - 8 2026-07-10
JIA5672 - 7 2026-06-22
JIA5591 PSA Airlines 7 2026-06-07
JIA5370 - 7 2026-07-13
JIA5541 PSA Airlines 6 2026-05-10
JIA5532 - 6 2026-06-26
JIA5416 PSA Airlines 6 2026-05-17
JIA5224 PSA Airlines 6 2026-05-06
JIA5151 PSA Airlines 6 2026-06-15
JIA5113 - 6 2026-06-22
JIA5636 PSA Airlines 5 2026-05-04
JIA5566 PSA Airlines 5 2026-06-08
JIA5544 - 5 2026-07-09
JIA5529 PSA Airlines 5 2026-05-09
JIA5487 PSA Airlines 5 2026-05-31
JIA5413 - 5 2026-07-03

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 JIA5439 - Jul 14, 00:45 UTCJul 14, 01:50 UTC1h 5m
2026-07-13 JIA5439 - Jul 13, 21:55 UTCJul 13, 23:15 UTC1h 20m
2026-07-13 JIA5370 - Jul 13, 19:35 UTCJul 13, 20:25 UTC50m
2026-07-13 JIA5370 - Jul 13, 18:00 UTCJul 13, 18:45 UTC45m
2026-07-13 JIA5679 - Jul 13, 11:30 UTCJul 13, 13:20 UTC1h 50m
2026-07-13 JIA5137 - Jul 13, 00:40 UTCJul 13, 02:30 UTC1h 50m
2026-07-13 JIA5137 CLT → YUL Jul 13, 00:38 UTCJul 13, 02:29 UTC1h 51m
2026-07-12 JIA5117 - Jul 12, 21:45 UTCJul 12, 22:55 UTC1h 10m
2026-07-12 JIA5117 - Jul 12, 19:35 UTCJul 12, 20:55 UTC1h 20m
2026-07-12 JIA5377 - Jul 12, 16:10 UTCJul 12, 17:35 UTC1h 25m
2026-07-12 JIA5377 - Jul 12, 13:55 UTCJul 12, 15:15 UTC1h 20m
2026-07-12 JIA5540 - Jul 12, 10:30 UTCJul 12, 11:45 UTC1h 15m
2026-07-12 JIA5464 CLT → AVP Jul 12, 02:55 UTCJul 12, 04:09 UTC1h 14m
2026-07-11 JIA5389 - Jul 11, 23:50 UTCJul 12, 01:00 UTC1h 10m
2026-07-11 JIA5389 - Jul 11, 21:35 UTCJul 11, 23:00 UTC1h 25m
2026-07-11 JIA5450 - Jul 11, 18:30 UTCJul 11, 18:45 UTC15m
2026-07-11 JIA5450 LIT → CLT Jul 11, 18:22 UTCJul 11, 19:45 UTC1h 23m
2026-07-11 JIA5450 - Jul 11, 15:50 UTCJul 11, 17:15 UTC1h 25m
2026-07-10 JIA5627 - Jul 10, 22:55 UTCJul 11, 00:15 UTC1h 20m
2026-07-10 JIA5627 - Jul 10, 19:40 UTCJul 10, 21:10 UTC1h 30m
2026-07-10 JIA5020 - Jul 10, 16:15 UTCJul 10, 17:40 UTC1h 25m
2026-07-10 JIA5020 - Jul 10, 13:45 UTCJul 10, 15:10 UTC1h 25m
2026-07-10 JIA5056 - Jul 10, 10:50 UTCJul 10, 11:25 UTC35m
2026-07-10 JIA5056 CRW → CLT Jul 10, 10:45 UTCJul 10, 11:25 UTC40m
2026-07-10 JIA5263 - Jul 10, 03:45 UTCJul 10, 04:20 UTC35m
2026-07-10 JIA5389 - Jul 10, 01:20 UTCJul 10, 02:30 UTC1h 10m
2026-07-10 JIA5389 SBN → CLT Jul 10, 01:19 UTCJul 10, 02:45 UTC1h 26m
2026-07-09 JIA5389 - Jul 9, 23:20 UTCJul 10, 00:35 UTC1h 15m
2026-07-09 JIA5368 - Jul 9, 21:00 UTCJul 9, 21:45 UTC45m
2026-07-09 JIA5368 - Jul 9, 19:05 UTCJul 9, 19:55 UTC50m
2026-07-09 JIA5299 - Jul 9, 16:10 UTCJul 9, 17:25 UTC1h 15m
2026-07-09 JIA5299 MLB → CLT Jul 9, 16:05 UTCJul 9, 17:21 UTC1h 16m
2026-07-09 JIA5299 - Jul 9, 13:55 UTCJul 9, 15:10 UTC1h 15m
2026-07-09 JIA5548 - Jul 9, 10:40 UTCJul 9, 11:50 UTC1h 10m
2026-07-09 JIA5548 PNS → CLT Jul 9, 10:36 UTCJul 9, 11:51 UTC1h 15m
2026-07-09 JIA5544 DCA → PNS Jul 9, 00:15 UTCJul 9, 02:10 UTC1h 55m
2026-07-08 JIA5568 BGR → DCA Jul 8, 20:45 UTCJul 8, 22:05 UTC1h 20m
2026-07-08 JIA5568 BGR → DCA Jul 8, 20:40 UTCJul 8, 22:06 UTC1h 26m
2026-07-08 JIA5568 DCA → BGR Jul 8, 18:15 UTCJul 8, 19:35 UTC1h 20m
2026-07-08 JIA5527 - Jul 8, 16:00 UTCJul 8, 16:55 UTC55m
2026-07-07 JIA5446 - Jul 7, 16:15 UTCJul 7, 17:55 UTC1h 40m
2026-07-07 JIA5446 - Jul 7, 13:20 UTCJul 7, 15:00 UTC1h 40m
2026-07-07 JIA5540 - Jul 7, 10:40 UTCJul 7, 11:55 UTC1h 15m
2026-07-07 JIA5464 - Jul 7, 05:55 UTCJul 7, 07:00 UTC1h 5m
2026-07-07 JIA5389 - Jul 7, 01:25 UTCJul 7, 02:45 UTC1h 20m
2026-07-06 JIA5389 - Jul 6, 23:15 UTCJul 7, 00:35 UTC1h 20m
2026-07-06 JIA5118 - Jul 6, 21:20 UTCJul 6, 21:50 UTC30m
2026-07-06 JIA5118 CHS → CLT Jul 6, 21:15 UTCJul 6, 21:49 UTC34m
2026-07-06 JIA5118 - Jul 6, 19:25 UTCJul 6, 20:10 UTC45m
2026-07-06 JIA5058 - Jul 6, 16:25 UTCJul 6, 17:40 UTC1h 15m

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 N577NN page for operator, model, and routing details .

Mode-S A769A3 frequently asked

What is Mode-S code A769A3?
A769A3 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N577NN.
Where is Mode-S A769A3 registered?
Mode-S code A769A3 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 A769A3 broadcasting right now?
No active broadcast right now. Last signal was 2h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A769A3, octal 51664643, decimal 10,971,555.
What flights does A769A3 operate?
Mode-S A769A3 has broadcast 20 distinct callsigns, including JIA5389, JIA5377, JIA5599, JIA5579, JIA5020.