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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
Broadcasting now · callsign JIA5659 · 23,850 ft
Flights observed
570
Distinct callsigns
20
Country
US
Last broadcast
13m ago

Current position

A68CAA is currently broadcasting. Map zoomed to live position.

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 - 9 2026-06-26
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
JIA5572 PSA Airlines 6 2026-06-11
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
JIA5446 - 5 2026-06-17
JIA5401 - 5 2026-06-21
JIA5248 PSA Airlines 5 2026-05-16

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-21 JIA5659 - Jul 21, 13:50 UTCJul 21, 14:30 UTC40m
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
2026-07-18 JIA5256 DTW → PHL Jul 18, 01:54 UTCJul 18, 02:55 UTC1h 1m
2026-07-18 JIA5256 DTW → PHL Jul 18, 00:04 UTCJul 18, 00:55 UTC50m
2026-07-14 JIA5551 - Jul 14, 16:50 UTCJul 14, 17:40 UTC50m
2026-07-14 JIA5551 SGF → DFW Jul 14, 16:44 UTCJul 14, 17:39 UTC55m
2026-07-14 JIA5551 - Jul 14, 14:30 UTCJul 14, 15:25 UTC55m
2026-07-13 JIA5329 - Jul 13, 03:55 UTCJul 13, 04:40 UTC45m
2026-07-12 JIA5329 - Jul 12, 22:05 UTCJul 13, 00:45 UTC2h 40m
2026-07-12 JIA5078 - Jul 12, 19:01 UTCJul 12, 20:45 UTC1h 45m
2026-07-12 JIA5374 - Jul 12, 17:10 UTCJul 12, 18:10 UTC1h 0m
2026-07-12 JIA5374 ROC → DCA Jul 12, 17:08 UTCJul 12, 18:05 UTC57m
2026-07-12 JIA5374 DCA → ROC Jul 12, 15:01 UTCJul 12, 15:50 UTC50m
2026-07-12 JIA5149 - Jul 12, 12:01 UTCJul 12, 13:05 UTC1h 5m
2026-07-11 JIA5484 - Jul 11, 23:55 UTCJul 12, 01:00 UTC1h 5m
2026-07-11 JIA5224 - Jul 11, 20:20 UTCJul 11, 22:35 UTC2h 15m
2026-07-11 JIA5224 DCA → ICT Jul 11, 16:30 UTCJul 11, 19:00 UTC2h 30m
2026-07-11 JIA5247 - Jul 11, 12:05 UTCJul 11, 14:45 UTC2h 40m
2026-07-11 JIA5247 IAH → DCA Jul 11, 12:04 UTCJul 11, 14:39 UTC2h 35m
2026-07-11 JIA5222 - Jul 11, 05:01 UTCJul 11, 07:30 UTC2h 30m
2026-07-11 JIA5222 DCA → IAH Jul 11, 04:56 UTCJul 11, 07:29 UTC2h 33m
2026-07-11 JIA5162 DAY → DCA Jul 11, 02:30 UTCJul 11, 03:30 UTC1h 0m
2026-07-10 JIA5198 - Jul 10, 22:30 UTCJul 10, 23:35 UTC1h 5m
2026-07-10 JIA5676 - Jul 10, 13:00 UTCJul 10, 14:00 UTC1h 0m
2026-07-10 JIA5676 SAV → CLT Jul 10, 13:00 UTCJul 10, 13:49 UTC49m
2026-07-10 JIA9973 - Jul 10, 02:10 UTCJul 10, 03:40 UTC1h 30m
2026-07-10 JIA5470 DCA → CLE Jul 10, 00:00 UTCJul 10, 01:00 UTC1h 0m
2026-07-09 JIA5061 - Jul 9, 15:25 UTCJul 9, 16:55 UTC1h 30m
2026-07-09 JIA5061 ADW → BGR Jul 9, 13:05 UTCJul 9, 14:30 UTC1h 25m

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?
Yes. Mode-S A68CAA is currently airborne.
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, JIA5300, JIA5071, JIA5606, JIA5245.