Apparatus

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sensors Mode-S transponder

A657AD

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N508AE · BOMBARDIER Regional Jet CRJ-700 · operated by AMERICAN AIRLINES INC

Hex
A657AD
Octal
51453655
Decimal
10,901,421
Country
US
Tail
N508AE
Type
CRJ7
No current signal · last broadcast 2h ago
Flights observed
609
Distinct callsigns
20
Country
US
Last broadcast
2h ago

Last known position

Most recent position reported by Mode-S A657AD.

Country allocation

The ICAO 24-bit address A657AD 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
JIA5388 - 14 2026-07-08
JIA5334 - 10 2026-06-21
JIA5213 PSA Airlines 10 2026-06-09
JIA5518 - 8 2026-07-10
JIA5614 PSA Airlines 7 2026-04-19
JIA5440 PSA Airlines 7 2026-05-19
JIA5113 - 7 2026-07-05
JIA5631 PSA Airlines 6 2026-04-21
JIA5577 - 6 2026-07-06
JIA5575 PSA Airlines 6 2026-05-27
JIA5319 PSA Airlines 6 2026-05-19
JIA5077 - 6 2026-06-29
JIA5037 - 6 2026-07-10
JIA5591 PSA Airlines 5 2026-04-22
JIA5547 - 5 2026-06-19
JIA5546 PSA Airlines 5 2026-06-01
JIA5521 - 5 2026-06-18
JIA5505 - 5 2026-06-20
JIA5470 - 5 2026-06-19
JIA5456 PSA Airlines 5 2026-05-11

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 JIA5150 - Jul 14, 01:35 UTCJul 14, 02:40 UTC1h 5m
2026-07-13 JIA5150 - Jul 13, 23:45 UTCJul 14, 00:50 UTC1h 5m
2026-07-13 JIA5075 - Jul 13, 20:05 UTCJul 13, 21:05 UTC1h 0m
2026-07-13 JIA5075 BHM → CLT Jul 13, 20:03 UTCJul 13, 21:04 UTC1h 1m
2026-07-13 JIA5075 - Jul 13, 18:10 UTCJul 13, 19:05 UTC55m
2026-07-13 JIA5331 PHL → BHM Jul 13, 15:30 UTCJul 13, 16:30 UTC1h 0m
2026-07-13 JIA5331 PHL → BHM Jul 13, 15:29 UTCJul 13, 16:29 UTC1h 0m
2026-07-13 JIA5330 - Jul 13, 14:00 UTCJul 13, 14:30 UTC30m
2026-07-13 JIA5146 SAV → DCA Jul 13, 11:19 UTCJul 13, 12:23 UTC1h 4m
2026-07-13 JIA5146 SAV → DCA Jul 13, 11:20 UTCJul 13, 12:40 UTC1h 20m
2026-07-13 JIA5601 - Jul 13, 04:05 UTCJul 13, 04:45 UTC40m
2026-07-13 JIA5601 CLT → SAV Jul 13, 04:02 UTCJul 13, 04:45 UTC43m
2026-07-13 JIA5040 ATL → CLT Jul 13, 00:40 UTCJul 13, 01:22 UTC42m
2026-07-13 JIA5040 - Jul 13, 00:40 UTCJul 13, 01:25 UTC45m
2026-07-12 JIA5040 - Jul 12, 21:50 UTCJul 12, 22:35 UTC45m
2026-07-12 JIA5118 CHS → CLT Jul 12, 19:45 UTCJul 12, 20:21 UTC36m
2026-07-12 JIA5118 - Jul 12, 17:50 UTCJul 12, 18:35 UTC45m
2026-07-12 JIA5431 - Jul 12, 14:10 UTCJul 12, 15:35 UTC1h 25m
2026-07-12 JIA5431 HPN → CLT Jul 12, 14:06 UTCJul 12, 15:34 UTC1h 28m
2026-07-12 JIA5431 - Jul 12, 11:45 UTCJul 12, 13:15 UTC1h 30m
2026-07-12 JIA5507 - Jul 12, 09:10 UTCJul 12, 09:50 UTC40m
2026-07-12 JIA5498 - Jul 12, 02:55 UTCJul 12, 03:35 UTC40m
2026-07-11 JIA5070 - Jul 11, 23:40 UTCJul 12, 01:00 UTC1h 20m
2026-07-11 JIA5236 - Jul 11, 21:55 UTCJul 11, 22:45 UTC50m
2026-07-11 JIA5236 DCA → HPN Jul 11, 21:52 UTCJul 11, 22:44 UTC52m
2026-07-11 JIA5572 - Jul 11, 19:35 UTCJul 11, 20:50 UTC1h 15m
2026-07-11 JIA5572 DCA → IND Jul 11, 17:25 UTCJul 11, 18:50 UTC1h 25m
2026-07-11 JIA5668 - Jul 11, 15:20 UTCJul 11, 16:20 UTC1h 0m
2026-07-11 JIA5668 YYZ → DCA Jul 11, 15:18 UTCJul 11, 16:19 UTC1h 1m
2026-07-11 JIA5522 PHL → YYZ Jul 11, 12:50 UTCJul 11, 14:05 UTC1h 15m
2026-07-11 JIA5522 - Jul 11, 12:40 UTCJul 11, 12:45 UTC5m
2026-07-11 JIA5088 - Jul 11, 10:40 UTCJul 11, 11:15 UTC35m
2026-07-11 JIA5088 ORF → PHL Jul 11, 10:37 UTCJul 11, 11:21 UTC44m
2026-07-11 JIA5632 - Jul 11, 01:50 UTCJul 11, 02:35 UTC45m
2026-07-11 JIA5632 - Jul 11, 01:40 UTCJul 11, 01:45 UTC5m
2026-07-10 JIA5518 - Jul 10, 23:20 UTCJul 11, 00:25 UTC1h 5m
2026-07-10 JIA5518 - Jul 10, 20:45 UTCJul 10, 21:55 UTC1h 10m
2026-07-10 JIA5037 - Jul 10, 17:10 UTCJul 10, 18:55 UTC1h 45m
2026-07-10 JIA5037 ATL → PHL Jul 10, 17:09 UTCJul 10, 18:48 UTC1h 39m
2026-07-10 JIA5037 - Jul 10, 14:25 UTCJul 10, 16:05 UTC1h 40m
2026-07-10 JIA5037 - Jul 10, 13:45 UTCJul 10, 13:50 UTC5m
2026-07-10 JIA5037 - Jul 10, 12:40 UTCJul 10, 13:00 UTC20m
2026-07-09 JIA5037 ATL → ABE Jul 9, 15:45 UTCJul 9, 17:50 UTC2h 5m
2026-07-09 JIA5039 - Jul 9, 13:55 UTCJul 9, 14:35 UTC40m
2026-07-09 JIA5257 - Jul 9, 09:15 UTCJul 9, 09:35 UTC20m
2026-07-08 JIA5580 - Jul 8, 22:35 UTCJul 8, 22:50 UTC15m
2026-07-08 JIA5388 - Jul 8, 18:20 UTCJul 8, 19:35 UTC1h 15m
2026-07-08 JIA5388 - Jul 8, 16:10 UTCJul 8, 17:20 UTC1h 10m
2026-07-08 JIA5182 - Jul 8, 14:15 UTCJul 8, 14:45 UTC30m
2026-07-08 JIA5182 TYS → CLT Jul 8, 14:09 UTCJul 8, 14:30 UTC21m

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 N508AE page for operator, model, and routing details .

Mode-S A657AD frequently asked

What is Mode-S code A657AD?
A657AD is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N508AE.
Where is Mode-S A657AD registered?
Mode-S code A657AD 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 A657AD 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 A657AD, octal 51453655, decimal 10,901,421.
What flights does A657AD operate?
Mode-S A657AD has broadcast 20 distinct callsigns, including JIA5388, JIA5334, JIA5213, JIA5518, JIA5614.