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sensors Mode-S transponder

A81166

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N619NN · BOMBARDIER Regional Jet CRJ-900 · operated by AMERICAN AIRLINES INC

Hex
A81166
Octal
52010546
Decimal
11,014,502
Country
US
Tail
N619NN
Type
CRJ9
No current signal · last broadcast 2h ago
Flights observed
650
Distinct callsigns
20
Country
US
Last broadcast
2h ago

Last known position

Most recent position reported by Mode-S A81166.

Country allocation

The ICAO 24-bit address A81166 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
JIA5109 - 13 2026-06-29
JIA5650 PSA Airlines 9 2026-05-24
JIA5640 PSA Airlines 7 2026-05-31
JIA5599 - 7 2026-04-13
JIA5455 PSA Airlines 7 2026-04-18
JIA5318 PSA Airlines 7 2026-05-01
JIA5195 - 7 2026-07-09
JIA5655 - 6 2026-07-12
JIA5596 - 6 2026-06-23
JIA5420 - 6 2026-07-09
JIA5134 - 6 2026-07-01
JIA5103 - 6 2026-06-24
JIA5036 - 6 2026-07-07
JIA5616 PSA Airlines 5 2026-05-14
JIA5575 - 5 2026-06-30
JIA5534 - 5 2026-06-13
JIA5520 PSA Airlines 5 2026-06-10
JIA5474 PSA Airlines 5 2026-06-13
JIA5435 - 5 2026-07-03
JIA5265 - 5 2026-06-30

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 JIA5557 DCA → HSV Jul 14, 00:30 UTCJul 14, 01:55 UTC1h 25m
2026-07-13 JIA5568 BGR → DCA Jul 13, 20:30 UTCJul 13, 22:10 UTC1h 40m
2026-07-13 JIA5568 - Jul 13, 18:00 UTCJul 13, 19:20 UTC1h 20m
2026-07-13 JIA5527 - Jul 13, 15:45 UTCJul 13, 16:40 UTC55m
2026-07-13 JIA5242 - Jul 13, 12:50 UTCJul 13, 14:00 UTC1h 10m
2026-07-13 JIA5586 PHL → DAY Jul 13, 05:10 UTCJul 13, 06:30 UTC1h 20m
2026-07-13 JIA558W BNA → PHL Jul 13, 02:15 UTCJul 13, 03:45 UTC1h 30m
2026-07-12 JIA5475 - Jul 12, 23:30 UTCJul 13, 01:05 UTC1h 35m
2026-07-12 JIA5475 DFW → BNA Jul 12, 23:28 UTCJul 13, 01:05 UTC1h 37m
2026-07-12 JIA5655 - Jul 12, 19:20 UTCJul 12, 21:00 UTC1h 40m
2026-07-12 JIA5655 - Jul 12, 16:20 UTCJul 12, 17:45 UTC1h 25m
2026-07-12 JIA5442 - Jul 12, 14:25 UTCJul 12, 15:15 UTC50m
2026-07-12 JIA5442 - Jul 12, 12:35 UTCJul 12, 13:35 UTC1h 0m
2026-07-12 JIA5651 ECP → DFW Jul 12, 02:20 UTCJul 12, 04:01 UTC1h 40m
2026-07-11 JIA5187 - Jul 11, 22:55 UTCJul 12, 00:30 UTC1h 35m
2026-07-11 JIA5163 - Jul 11, 18:55 UTCJul 11, 21:10 UTC2h 15m
2026-07-11 JIA5163 - Jul 11, 14:45 UTCJul 11, 16:40 UTC1h 55m
2026-07-11 JIA5669 - Jul 11, 11:40 UTCJul 11, 13:25 UTC1h 45m
2026-07-11 JIA5669 PIA → DFW Jul 11, 11:38 UTCJul 11, 13:23 UTC1h 45m
2026-07-11 JIA5354 - Jul 11, 03:05 UTCJul 11, 04:40 UTC1h 35m
2026-07-10 JIA5205 - Jul 10, 23:30 UTCJul 11, 00:55 UTC1h 25m
2026-07-10 JIA5205 HSV → DFW Jul 10, 23:27 UTCJul 11, 00:53 UTC1h 26m
2026-07-10 JIA5205 - Jul 10, 21:05 UTCJul 10, 22:30 UTC1h 25m
2026-07-10 JIA5396 - Jul 10, 17:05 UTCJul 10, 19:15 UTC2h 10m
2026-07-10 JIA5396 CHS → DFW Jul 10, 17:02 UTCJul 10, 19:12 UTC2h 10m
2026-07-10 JIA5120 - Jul 10, 13:55 UTCJul 10, 16:05 UTC2h 10m
2026-07-10 JIA5120 DFW → CHS Jul 10, 13:54 UTCJul 10, 16:07 UTC2h 13m
2026-07-10 JIA5194 - Jul 10, 11:15 UTCJul 10, 12:25 UTC1h 10m
2026-07-10 JIA5449 - Jul 10, 03:50 UTCJul 10, 04:50 UTC1h 0m
2026-07-10 JIA5574 - Jul 10, 01:00 UTCJul 10, 01:30 UTC30m
2026-07-10 JIA5574 AUS → DFW Jul 10, 00:59 UTCJul 10, 01:27 UTC28m
2026-07-09 JIA5574 - Jul 9, 23:20 UTCJul 9, 23:55 UTC35m
2026-07-09 JIA5420 - Jul 9, 20:55 UTCJul 9, 21:45 UTC50m
2026-07-09 JIA5420 TUL → DFW Jul 9, 20:53 UTCJul 9, 21:40 UTC47m
2026-07-09 JIA5420 - Jul 9, 19:10 UTCJul 9, 19:55 UTC45m
2026-07-09 JIA5593 - Jul 9, 16:10 UTCJul 9, 17:50 UTC1h 40m
2026-07-09 JIA5593 - Jul 9, 13:30 UTCJul 9, 15:15 UTC1h 45m
2026-07-09 JIA5195 - Jul 9, 10:55 UTCJul 9, 11:30 UTC35m
2026-07-09 JIA5195 MOB → DFW Jul 9, 10:49 UTCJul 9, 12:11 UTC1h 22m
2026-07-09 JIA5186 - Jul 9, 04:20 UTCJul 9, 05:20 UTC1h 0m
2026-07-09 JIA5651 - Jul 9, 01:30 UTCJul 9, 03:10 UTC1h 40m
2026-07-08 JIA5649 - Jul 8, 23:00 UTCJul 9, 00:10 UTC1h 10m
2026-07-08 JIA5093 - Jul 8, 19:20 UTCJul 8, 21:05 UTC1h 45m
2026-07-08 JIA5093 - Jul 8, 16:50 UTCJul 8, 18:25 UTC1h 35m
2026-07-08 JIA5322 - Jul 8, 13:40 UTCJul 8, 14:45 UTC1h 5m
2026-07-08 JIA5566 - Jul 8, 01:15 UTCJul 8, 02:25 UTC1h 10m
2026-07-07 JIA5405 - Jul 7, 16:35 UTCJul 7, 18:00 UTC1h 25m
2026-07-07 JIA5405 SGF → CLT Jul 7, 16:30 UTCJul 7, 18:03 UTC1h 33m
2026-07-07 JIA5405 - Jul 7, 13:50 UTCJul 7, 15:20 UTC1h 30m
2026-07-07 JIA5036 - Jul 7, 11:25 UTCJul 7, 12:20 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 N619NN page for operator, model, and routing details .

Mode-S A81166 frequently asked

What is Mode-S code A81166?
A81166 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N619NN.
Where is Mode-S A81166 registered?
Mode-S code A81166 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 A81166 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 A81166, octal 52010546, decimal 11,014,502.
What flights does A81166 operate?
Mode-S A81166 has broadcast 20 distinct callsigns, including JIA5109, JIA5650, JIA5640, JIA5599, JIA5455.