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sensors Mode-S transponder

A68CAA

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N521AE · BOMBARDIER Regional Jet CRJ-700 · operated by AMERICAN AIRLINES INC

Hex
A68CAA
Octal
51506252
Decimal
10,914,986
Country
US
Tail
N521AE
Type
CRJ7
No current signal · last broadcast Jul 26, 18:20 UTC
Flights observed
597
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 18:20 UTC

Last known position

Most recent position reported by Mode-S A68CAA.

Country allocation

The ICAO 24-bit address A68CAA 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
JIA5237 PSA Airlines 11 2026-07-23
JIA5572 PSA Airlines 9 2026-07-25
JIA5300 - 8 2026-06-24
JIA5071 PSA Airlines 8 2026-07-20
JIA5606 PSA Airlines 7 2026-06-21
JIA5245 PSA Airlines 7 2026-05-19
JIA5159 - 7 2026-07-04
JIA5052 PSA Airlines 7 2026-05-14
JIA5600 - 6 2026-06-20
JIA5516 PSA Airlines 6 2026-07-23
JIA5388 - 6 2026-07-01
JIA5282 PSA Airlines 6 2026-06-11
JIA5272 - 6 2026-07-01
JIA5251 PSA Airlines 6 2026-05-29
JIA5107 - 6 2026-06-27
JIA5070 PSA Airlines 6 2026-06-13
JIA5656 - 5 2026-06-24
JIA5521 PSA Airlines 5 2026-05-29
JIA5473 PSA Airlines 5 2026-07-23
JIA5446 - 5 2026-06-17

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 JIA9952 CLT → CVG Jul 26, 17:10 UTCJul 26, 18:20 UTC1h 10m
2026-07-25 JIA5132 DCA → PWM Jul 25, 22:50 UTCJul 25, 23:45 UTC55m
2026-07-25 JIA5132 DCA → PWM Jul 25, 22:48 UTCJul 25, 23:45 UTC57m
2026-07-25 JIA5572 CLT → AVP Jul 25, 19:40 UTCJul 25, 20:45 UTC1h 5m
2026-07-25 JIA5572 CLT → AVP Jul 25, 18:25 UTCJul 25, 18:45 UTC20m
2026-07-25 JIA5572 CLT → AVP Jul 25, 17:30 UTCJul 25, 18:30 UTC1h 0m
2026-07-24 JIA5032 PHL → BTV Jul 24, 22:55 UTCJul 24, 23:55 UTC1h 0m
2026-07-24 JIA5032 PHL → BTV Jul 24, 21:00 UTCJul 24, 21:50 UTC50m
2026-07-24 JIA5092 IND → PHL Jul 24, 17:35 UTCJul 24, 18:45 UTC1h 10m
2026-07-24 JIA5092 IND → PHL Jul 24, 15:30 UTCJul 24, 16:40 UTC1h 10m
2026-07-24 JIA5459 DCA → PVD Jul 24, 10:49 UTCJul 24, 12:21 UTC1h 32m
2026-07-24 JIA5436 ATL → PHL Jul 24, 03:00 UTCJul 24, 04:20 UTC1h 20m
2026-07-24 JIA5436 ATL → PHL Jul 24, 02:57 UTCJul 24, 04:16 UTC1h 19m
2026-07-24 JIA5412 ATL → DCA Jul 24, 00:45 UTCJul 24, 01:40 UTC55m
2026-07-23 JIA5412 ATL → DCA Jul 23, 22:05 UTCJul 23, 22:55 UTC50m
2026-07-23 JIA5237 AGS → DCA Jul 23, 19:55 UTCJul 23, 20:40 UTC45m
2026-07-23 JIA5237 AGS → DCA Jul 23, 17:40 UTCJul 23, 18:35 UTC55m
2026-07-23 JIA5516 SDF → PHL Jul 23, 15:30 UTCJul 23, 16:45 UTC1h 15m
2026-07-23 JIA5516 SDF → PHL Jul 23, 15:29 UTCJul 23, 16:33 UTC1h 4m
2026-07-23 JIA5550 BDL → CLT Jul 23, 13:25 UTCJul 23, 14:30 UTC1h 5m
2026-07-23 JIA5261 DAY → DCA Jul 23, 10:30 UTCJul 23, 11:30 UTC1h 0m
2026-07-23 JIA5261 DAY → DCA Jul 23, 10:28 UTCJul 23, 11:24 UTC56m
2026-07-23 JIA5473 CLT → MHT Jul 23, 01:56 UTCJul 23, 03:05 UTC1h 9m
2026-07-23 JIA5473 CLT → MHT Jul 23, 02:00 UTCJul 23, 03:10 UTC1h 10m
2026-07-22 JIA5246 STL → PHL Jul 22, 22:20 UTCJul 22, 23:30 UTC1h 10m
2026-07-22 JIA5246 STL → PHL Jul 22, 20:20 UTCJul 22, 21:30 UTC1h 10m
2026-07-22 JIA565U - Jul 22, 18:00 UTCJul 22, 19:00 UTC1h 0m
2026-07-21 JIA5659 - Jul 21, 13:50 UTCJul 21, 15:00 UTC1h 10m
2026-07-21 JIA5411 - Jul 21, 10:15 UTCJul 21, 11:15 UTC1h 0m
2026-07-21 JIA5079 DCA → CHS Jul 21, 03:45 UTCJul 21, 04:40 UTC55m
2026-07-20 JIA5452 PHL → DTW Jul 20, 23:00 UTCJul 21, 00:40 UTC1h 40m
2026-07-20 JIA5072 MSP → PHL Jul 20, 20:25 UTCJul 20, 21:55 UTC1h 30m
2026-07-20 JIA5072 MSP → PHL Jul 20, 20:24 UTCJul 20, 21:54 UTC1h 30m
2026-07-20 JIA5071 PHL → ORF Jul 20, 15:30 UTCJul 20, 16:15 UTC45m
2026-07-20 JIA5071 PHL → ORF Jul 20, 13:35 UTCJul 20, 14:20 UTC45m
2026-07-20 JIA5048 - Jul 20, 10:45 UTCJul 20, 11:40 UTC55m
2026-07-20 JIA5044 BDL → PHL Jul 20, 04:15 UTCJul 20, 05:05 UTC50m
2026-07-20 JIA5081 - Jul 20, 02:25 UTCJul 20, 03:10 UTC45m
2026-07-20 JIA5081 - Jul 20, 00:00 UTCJul 20, 00:55 UTC55m
2026-07-19 JIAA5591 - Jul 19, 17:45 UTCJul 19, 19:30 UTC1h 45m
2026-07-19 JIA5591 - Jul 19, 15:00 UTCJul 19, 16:40 UTC1h 40m
2026-07-19 JIA5565 DCA → ORF Jul 19, 11:45 UTCJul 19, 13:45 UTC2h 0m
2026-07-19 JIA5557 DFW → AGS Jul 19, 00:00 UTCJul 19, 01:55 UTC1h 55m
2026-07-18 JIA5362 OKC → DFW Jul 18, 21:50 UTCJul 18, 22:25 UTC35m
2026-07-18 JIA5362 DFW → OKC Jul 18, 20:15 UTCJul 18, 21:00 UTC45m
2026-07-18 JIA5479 - Jul 18, 17:45 UTCJul 18, 18:45 UTC1h 0m
2026-07-18 JIA5479 - Jul 18, 15:30 UTCJul 18, 16:15 UTC45m
2026-07-18 JIA5195 - Jul 18, 10:25 UTCJul 18, 11:45 UTC1h 20m
2026-07-18 JIA5195 MOB → DFW Jul 18, 10:20 UTCJul 18, 11:43 UTC1h 23m
2026-07-18 JIA5186 - Jul 18, 03:50 UTCJul 18, 04:50 UTC1h 0m

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 N521AE page for operator, model, and routing details .

Mode-S A68CAA frequently asked

What is Mode-S code A68CAA?
A68CAA is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N521AE.
Where is Mode-S A68CAA registered?
Mode-S code A68CAA 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 A68CAA broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 18:20 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A68CAA, octal 51506252, decimal 10,914,986.
What flights does A68CAA operate?
Mode-S A68CAA has broadcast 20 distinct callsigns, including JIA5237, JIA5572, JIA5300, JIA5071, JIA5606.