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sensors Mode-S transponder

A7D39D

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N603NN · BOMBARDIER Regional Jet CRJ-900 · operated by AMERICAN AIRLINES INC

Hex
A7D39D
Octal
51751635
Decimal
10,998,685
Country
US
Tail
N603NN
Type
CRJ9
No current signal · last broadcast Jul 26, 21:15 UTC
Flights observed
631
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 21:15 UTC

Last known position

Most recent position reported by Mode-S A7D39D.

Country allocation

The ICAO 24-bit address A7D39D 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
JIA5647 - 9 2026-06-24
JIA5648 - 8 2026-06-17
JIA5413 - 8 2026-07-14
JIA5381 - 7 2026-06-19
JIA5370 - 7 2026-07-03
JIA5072 PSA Airlines 7 2026-05-28
JIA5295 - 6 2026-06-29
JIA5183 PSA Airlines 6 2026-04-25
JIA5160 - 6 2026-07-14
JIA5627 - 5 2026-07-01
JIA5604 PSA Airlines 5 2026-07-23
JIA5510 - 5 2026-07-09
JIA5463 - 5 2026-06-29
JIA5409 PSA Airlines 5 2026-05-20
JIA5340 PSA Airlines 5 2026-07-24
JIA5311 - 5 2026-06-25
JIA5304 PSA Airlines 5 2026-05-28
JIA5293 PSA Airlines 5 2026-05-23
JIA5268 PSA Airlines 5 2026-06-02
JIA5204 - 5 2026-07-17

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 JIA5064 PHL → MHT Jul 26, 20:40 UTCJul 26, 21:15 UTC35m
2026-07-26 JIA5614 SYR → PHL Jul 26, 18:10 UTCJul 26, 19:30 UTC1h 20m
2026-07-26 JIA5614 SYR → PHL Jul 26, 15:40 UTCJul 26, 17:05 UTC1h 25m
2026-07-26 JIA5130 CVG → PHL Jul 26, 12:15 UTCJul 26, 13:30 UTC1h 15m
2026-07-26 JIA5130 CVG → PHL Jul 26, 12:13 UTCJul 26, 13:31 UTC1h 18m
2026-07-26 JIA5504 GSP → PHL Jul 26, 03:20 UTCJul 26, 03:40 UTC20m
2026-07-26 JIA5178 MCI → DCA Jul 26, 00:40 UTCJul 26, 01:50 UTC1h 10m
2026-07-25 JIA5187 DCA → PWM Jul 25, 21:50 UTCJul 25, 23:24 UTC1h 34m
2026-07-25 JIA5187 DCA → PWM Jul 25, 21:55 UTCJul 25, 23:15 UTC1h 20m
2026-07-25 JIA5163 PHL → IND Jul 25, 18:40 UTCJul 25, 20:35 UTC1h 55m
2026-07-25 JIA5163 PHL → IND Jul 25, 15:35 UTCJul 25, 17:50 UTC2h 15m
2026-07-25 JIA5565 DCA → ORF Jul 25, 11:40 UTCJul 25, 13:40 UTC2h 0m
2026-07-25 JIA5565 DCA → ORF Jul 25, 11:37 UTCJul 25, 13:44 UTC2h 7m
2026-07-25 JIA5523 CVG → DCA Jul 25, 01:20 UTCJul 25, 03:15 UTC1h 55m
2026-07-24 JIA5340 RSW → PHL Jul 24, 21:52 UTCJul 24, 23:12 UTC1h 20m
2026-07-24 JIA5564 IND → PHL Jul 24, 19:35 UTCJul 24, 21:00 UTC1h 25m
2026-07-24 JIA5564 IND → PHL Jul 24, 19:30 UTCJul 24, 20:58 UTC1h 28m
2026-07-24 JIA5426 SYR → PHL Jul 24, 13:10 UTCJul 24, 14:45 UTC1h 35m
2026-07-24 JIA5426 SYR → PHL Jul 24, 13:06 UTCJul 24, 14:43 UTC1h 37m
2026-07-24 JIA5206 SRQ → PHL Jul 24, 01:40 UTCJul 24, 03:10 UTC1h 30m
2026-07-23 JIA5604 CLT → PIA Jul 23, 23:00 UTCJul 24, 00:10 UTC1h 10m
2026-07-23 JIA5604 CLT → PIA Jul 23, 20:45 UTCJul 23, 21:50 UTC1h 5m
2026-07-23 JIA5446 DCA → DTW Jul 23, 17:05 UTCJul 23, 18:50 UTC1h 45m
2026-07-23 JIA5446 DCA → DTW Jul 23, 14:25 UTCJul 23, 16:10 UTC1h 45m
2026-07-23 JIA5176 SDF → DCA Jul 23, 11:00 UTCJul 23, 11:45 UTC45m
2026-07-23 JIA5176 SDF → DCA Jul 23, 11:00 UTCJul 23, 11:50 UTC50m
2026-07-23 JIA5528 MCI → DCA Jul 23, 01:30 UTCJul 23, 02:10 UTC40m
2026-07-22 JIA5117 - Jul 22, 22:50 UTCJul 22, 23:55 UTC1h 5m
2026-07-22 JIA5117 - Jul 22, 21:10 UTCJul 22, 22:05 UTC55m
2026-07-22 JIA5171 - Jul 22, 17:15 UTCJul 22, 18:00 UTC45m
2026-07-22 JIA5171 - Jul 22, 15:20 UTCJul 22, 16:10 UTC50m
2026-07-22 JIA5140 - Jul 22, 12:10 UTCJul 22, 12:55 UTC45m
2026-07-22 JIA5142 - Jul 22, 03:25 UTCJul 22, 04:15 UTC50m
2026-07-22 JIA5414 DCA → PVD Jul 22, 01:10 UTCJul 22, 02:00 UTC50m
2026-07-22 JIA5414 DCA → PVD Jul 22, 01:06 UTCJul 22, 01:59 UTC53m
2026-07-21 JIA9956 - Jul 21, 19:35 UTCJul 21, 22:00 UTC2h 25m
2026-07-21 JIA5165 PHL → DSM Jul 21, 15:40 UTCJul 21, 18:20 UTC2h 40m
2026-07-21 JIA5509 BTV → DCA Jul 21, 11:35 UTCJul 21, 13:40 UTC2h 5m
2026-07-21 JIA5512 SDF → DCA Jul 21, 03:00 UTCJul 21, 04:55 UTC1h 55m
2026-07-21 JIA5512 SDF → DCA Jul 21, 02:45 UTCJul 21, 02:50 UTC5m
2026-07-21 JIA5590 PHL → ROC Jul 21, 00:25 UTCJul 21, 01:20 UTC55m
2026-07-20 JIA5590 PHL → ROC Jul 20, 21:45 UTCJul 20, 22:45 UTC1h 0m
2026-07-20 JIA5189 - Jul 20, 19:20 UTCJul 20, 20:10 UTC50m
2026-07-20 JIA5189 - Jul 20, 17:15 UTCJul 20, 17:55 UTC40m
2026-07-20 JIA5166 - Jul 20, 15:05 UTCJul 20, 16:00 UTC55m
2026-07-20 JIA5166 - Jul 20, 13:10 UTCJul 20, 13:55 UTC45m
2026-07-20 JIA5620 TYS → PHL Jul 20, 10:15 UTCJul 20, 11:15 UTC1h 0m
2026-07-20 JIA5620 TYS → PHL Jul 20, 10:11 UTCJul 20, 11:39 UTC1h 28m
2026-07-19 JIA5066 PHL → TYS Jul 19, 23:55 UTCJul 20, 01:15 UTC1h 20m
2026-07-19 JIA5189 - Jul 19, 21:05 UTCJul 19, 21:55 UTC50m

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 N603NN page for operator, model, and routing details .

Mode-S A7D39D frequently asked

What is Mode-S code A7D39D?
A7D39D is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N603NN.
Where is Mode-S A7D39D registered?
Mode-S code A7D39D 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 A7D39D broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 21:15 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A7D39D, octal 51751635, decimal 10,998,685.
What flights does A7D39D operate?
Mode-S A7D39D has broadcast 20 distinct callsigns, including JIA5647, JIA5648, JIA5413, JIA5381, JIA5370.