Apparatus

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sensors Mode-S transponder

A7C00F

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N599NN · BOMBARDIER Regional Jet CRJ-900 · operated by AMERICAN AIRLINES INC

Hex
A7C00F
Octal
51740017
Decimal
10,993,679
Country
US
Tail
N599NN
Type
CRJ9
No current signal · last broadcast 50m ago
Flights observed
639
Distinct callsigns
20
Country
US
Last broadcast
50m ago

Last known position

Most recent position reported by Mode-S A7C00F.

Country allocation

The ICAO 24-bit address A7C00F 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
JIA5383 - 10 2026-07-13
JIA5285 - 7 2026-06-25
JIA5129 - 7 2026-07-09
JIA5047 PSA Airlines 7 2026-06-05
JIA5626 PSA Airlines 6 2026-04-20
JIA5624 PSA Airlines 6 2026-04-20
JIA5616 - 6 2026-06-17
JIA5584 PSA Airlines 6 2026-05-15
JIA5185 PSA Airlines 6 2026-05-26
JIA5179 PSA Airlines 6 2026-06-16
JIA5170 - 6 2026-06-20
JIA5064 PSA Airlines 6 2026-06-05
JIA5639 - 5 2026-06-28
JIA5614 - 5 2026-06-19
JIA5585 - 5 2026-07-12
JIA5554 - 5 2026-07-06
JIA5443 - 5 2026-07-14
JIA5424 - 5 2026-07-07
JIA5419 PSA Airlines 5 2026-05-13
JIA5300 - 5 2026-07-08

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 JIA5118 - Jul 14, 19:35 UTCJul 14, 19:45 UTC10m
2026-07-14 JIA5118 - Jul 14, 18:00 UTCJul 14, 18:30 UTC30m
2026-07-14 JIA5039 ATL → CLT Jul 14, 15:30 UTCJul 14, 16:11 UTC41m
2026-07-14 JIA5039 - Jul 14, 15:30 UTCJul 14, 16:10 UTC40m
2026-07-14 JIA5039 - Jul 14, 13:35 UTCJul 14, 14:15 UTC40m
2026-07-14 JIA5540 - Jul 14, 10:30 UTCJul 14, 11:45 UTC1h 15m
2026-07-14 JIA5464 - Jul 14, 04:35 UTCJul 14, 05:45 UTC1h 10m
2026-07-14 JIA5443 - Jul 14, 01:25 UTCJul 14, 03:05 UTC1h 40m
2026-07-13 JIA5443 - Jul 13, 22:15 UTCJul 14, 00:05 UTC1h 50m
2026-07-13 JIA5383 - Jul 13, 19:25 UTCJul 13, 20:15 UTC50m
2026-07-13 JIA5383 - Jul 13, 17:55 UTCJul 13, 18:35 UTC40m
2026-07-13 JIA5262 - Jul 13, 15:35 UTCJul 13, 16:35 UTC1h 0m
2026-07-13 JIA5262 LEX → CLT Jul 13, 15:34 UTCJul 13, 16:11 UTC37m
2026-07-13 JIA5262 - Jul 13, 13:50 UTCJul 13, 14:35 UTC45m
2026-07-13 JIA5507 - Jul 13, 10:55 UTCJul 13, 11:35 UTC40m
2026-07-13 JIA5498 - Jul 13, 04:05 UTCJul 13, 04:50 UTC45m
2026-07-13 JIA5269 - Jul 13, 00:50 UTCJul 13, 02:05 UTC1h 15m
2026-07-13 JIA5269 MEM → CLT Jul 13, 00:46 UTCJul 13, 02:04 UTC1h 18m
2026-07-12 JIA5269 - Jul 12, 22:35 UTCJul 12, 23:55 UTC1h 20m
2026-07-12 JIA5383 - Jul 12, 19:50 UTCJul 12, 20:30 UTC40m
2026-07-12 JIA5383 SAV → CLT Jul 12, 19:48 UTCJul 12, 20:29 UTC41m
2026-07-12 JIA5383 - Jul 12, 17:55 UTCJul 12, 19:01 UTC1h 5m
2026-07-12 JIA5585 - Jul 12, 15:30 UTCJul 12, 16:35 UTC1h 5m
2026-07-12 JIA5585 - Jul 12, 13:30 UTCJul 12, 14:30 UTC1h 0m
2026-07-12 JIA5255 - Jul 12, 10:50 UTCJul 12, 11:55 UTC1h 5m
2026-07-12 JIA5161 - Jul 12, 01:40 UTCJul 12, 02:35 UTC55m
2026-07-12 JIA5161 CLT → SDF Jul 12, 01:35 UTCJul 12, 02:37 UTC1h 2m
2026-07-11 JIA5672 - Jul 11, 23:25 UTCJul 12, 00:01 UTC35m
2026-07-11 JIA5672 - Jul 11, 21:00 UTCJul 11, 22:25 UTC1h 25m
2026-07-11 JIA5571 - Jul 11, 17:35 UTCJul 11, 19:15 UTC1h 40m
2026-07-11 JIA5571 TVC → CLT Jul 11, 17:30 UTCJul 11, 19:13 UTC1h 43m
2026-07-11 JIA5480 - Jul 11, 15:05 UTCJul 11, 16:30 UTC1h 25m
2026-07-11 JIA5480 PHL → TVC Jul 11, 15:01 UTCJul 11, 16:38 UTC1h 37m
2026-07-11 JIA5480 - Jul 11, 14:50 UTCJul 11, 14:55 UTC5m
2026-07-11 JIA5488 - Jul 11, 10:55 UTCJul 11, 11:45 UTC50m
2026-07-11 JIA5488 MSP → PHL Jul 11, 10:55 UTCJul 11, 13:04 UTC2h 9m
2026-07-11 JIA5460 PHL → MSP Jul 11, 01:05 UTCJul 11, 03:20 UTC2h 15m
2026-07-10 JIA5427 - Jul 10, 21:25 UTCJul 10, 23:10 UTC1h 45m
2026-07-10 JIA5427 - Jul 10, 18:30 UTCJul 10, 20:05 UTC1h 35m
2026-07-10 JIA5427 PHL → PHL Jul 10, 18:20 UTCJul 10, 18:25 UTC5m
2026-07-10 JIA5605 - Jul 10, 16:40 UTCJul 10, 17:00 UTC20m
2026-07-10 JIA5605 - Jul 10, 15:45 UTCJul 10, 16:35 UTC50m
2026-07-10 JIA5605 PHL → CVG Jul 10, 13:30 UTCJul 10, 14:50 UTC1h 20m
2026-07-10 JIA5438 - Jul 10, 09:55 UTCJul 10, 11:00 UTC1h 5m
2026-07-10 JIA5438 CVG → PHL Jul 10, 09:52 UTCJul 10, 11:06 UTC1h 14m
2026-07-09 JIA9962 MGM → MHT Jul 9, 22:45 UTCJul 9, 23:20 UTC35m
2026-07-09 JIA5129 PHL → CLE Jul 9, 20:35 UTCJul 9, 21:45 UTC1h 10m
2026-07-09 JIA5239 - Jul 9, 17:25 UTCJul 9, 18:20 UTC55m
2026-07-09 JIA5239 PIT → PHL Jul 9, 17:24 UTCJul 9, 18:19 UTC55m
2026-07-09 JIA5485 - Jul 9, 15:40 UTCJul 9, 16:20 UTC40m

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 N599NN page for operator, model, and routing details .

Mode-S A7C00F frequently asked

What is Mode-S code A7C00F?
A7C00F is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N599NN.
Where is Mode-S A7C00F registered?
Mode-S code A7C00F 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 A7C00F broadcasting right now?
No active broadcast right now. Last signal was 50m ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A7C00F, octal 51740017, decimal 10,993,679.
What flights does A7C00F operate?
Mode-S A7C00F has broadcast 20 distinct callsigns, including JIA5383, JIA5285, JIA5129, JIA5047, JIA5626.