Apparatus

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sensors Mode-S transponder

A639F5

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N500AE · BOMBARDIER Regional Jet CRJ-700 · operated by AMERICAN AIRLINES INC

Hex
A639F5
Octal
51434765
Decimal
10,893,813
Country
US
Tail
N500AE
Type
CRJ7
No current signal · last broadcast Jul 26, 19:55 UTC
Flights observed
601
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 19:55 UTC

Last known position

Most recent position reported by Mode-S A639F5.

Country allocation

The ICAO 24-bit address A639F5 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
JIA5282 PSA Airlines 12 2026-07-24
JIA5077 - 9 2026-07-01
JIA5606 - 8 2026-07-10
JIA5604 PSA Airlines 8 2026-04-29
JIA5080 - 8 2026-07-16
JIA5589 PSA Airlines 7 2026-07-19
JIA5401 - 7 2026-07-11
JIA5338 PSA Airlines 7 2026-05-27
JIA5286 - 7 2026-07-04
JIA5678 - 6 2026-07-08
JIA5673 PSA Airlines 6 2026-05-26
JIA5395 PSA Airlines 6 2026-07-01
JIA5368 PSA Airlines 6 2026-05-20
JIA5346 PSA Airlines 6 2026-07-26
JIA5329 PSA Airlines 6 2026-06-08
JIA5323 - 6 2026-07-11
JIA5230 PSA Airlines 6 2026-07-25
JIA5159 - 6 2026-07-09
JIA5082 - 6 2026-06-28
JIA5059 - 6 2026-07-08

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 JIA5346 CLT → JAN Jul 26, 18:05 UTCJul 26, 19:45 UTC1h 40m
2026-07-26 JIA5346 CLT → JAN Jul 26, 15:20 UTCJul 26, 16:55 UTC1h 35m
2026-07-25 JIA5362 DCA → MHT Jul 25, 21:40 UTCJul 25, 22:15 UTC35m
2026-07-25 JIA5362 DCA → MHT Jul 25, 20:15 UTCJul 25, 20:55 UTC40m
2026-07-25 JIA5346 CLT → JAN Jul 25, 17:40 UTCJul 25, 19:15 UTC1h 35m
2026-07-25 JIA5346 CLT → JAN Jul 25, 15:05 UTCJul 25, 16:40 UTC1h 35m
2026-07-25 JIA5660 DTW → DCA Jul 25, 12:10 UTCJul 25, 13:15 UTC1h 5m
2026-07-25 JIA5230 BDL → DCA Jul 25, 03:55 UTCJul 25, 05:55 UTC2h 0m
2026-07-25 JIA5230 BDL → DCA Jul 25, 03:47 UTCJul 25, 05:53 UTC2h 6m
2026-07-25 JIA5153 CRW → DCA Jul 25, 01:05 UTCJul 25, 01:50 UTC45m
2026-07-25 JIA5153 CRW → DCA Jul 25, 01:02 UTCJul 25, 01:48 UTC46m
2026-07-24 JIA5164 DCA → CRW Jul 24, 22:35 UTCJul 24, 23:20 UTC45m
2026-07-24 JIA5237 AGS → DCA Jul 24, 20:35 UTCJul 24, 21:15 UTC40m
2026-07-24 JIA5237 AGS → DCA Jul 24, 20:25 UTCJul 24, 21:22 UTC57m
2026-07-24 JIA5237 AGS → DCA Jul 24, 17:25 UTCJul 24, 18:10 UTC45m
2026-07-24 JIA5282 HPN → DCA Jul 24, 15:10 UTCJul 24, 16:10 UTC1h 0m
2026-07-24 JIA5282 HPN → DCA Jul 24, 15:08 UTCJul 24, 15:53 UTC45m
2026-07-24 JIA5282 HPN → DCA Jul 24, 13:10 UTCJul 24, 14:00 UTC50m
2026-07-24 JIA5244 PHL → CVG Jul 24, 10:55 UTCJul 24, 12:00 UTC1h 5m
2026-07-24 JIA5597 DCA → TLH Jul 24, 01:25 UTCJul 24, 02:35 UTC1h 10m
2026-07-23 JIA5375 MSP → PHL Jul 23, 23:05 UTCJul 23, 23:55 UTC50m
2026-07-23 JIA5375 MSP → PHL Jul 23, 21:00 UTCJul 23, 21:50 UTC50m
2026-07-23 JIA5526 DCA → CHS Jul 23, 16:15 UTCJul 23, 18:55 UTC2h 40m
2026-07-23 JIA5467 - Jul 23, 12:20 UTCJul 23, 15:05 UTC2h 45m
2026-07-22 JIA5172 DCA → ALB Jul 22, 22:35 UTCJul 22, 23:40 UTC1h 5m
2026-07-22 JIA5172 DCA → ALB Jul 22, 22:33 UTCJul 22, 23:42 UTC1h 9m
2026-07-22 JIA5172 DCA → ALB Jul 22, 20:25 UTCJul 22, 21:30 UTC1h 5m
2026-07-22 JIA5085 ALB → PHL Jul 22, 17:15 UTCJul 22, 18:35 UTC1h 20m
2026-07-22 JIA5085 ALB → PHL Jul 22, 17:12 UTCJul 22, 18:30 UTC1h 18m
2026-07-22 JIA5085 ALB → PHL Jul 22, 14:25 UTCJul 22, 16:00 UTC1h 35m
2026-07-22 JIA5085 ALB → PHL Jul 22, 14:25 UTCJul 22, 15:53 UTC1h 28m
2026-07-22 JIA5419 - Jul 22, 11:10 UTCJul 22, 11:30 UTC20m
2026-07-21 JIA5337 ORF → DCA Jul 21, 18:20 UTCJul 21, 19:20 UTC1h 0m
2026-07-21 JIA5400 DCA → BDL Jul 21, 14:55 UTCJul 21, 16:20 UTC1h 25m
2026-07-21 JIA5400 DCA → BDL Jul 21, 12:05 UTCJul 21, 13:25 UTC1h 20m
2026-07-21 JIA5351 CLT → MHT Jul 21, 09:40 UTCJul 21, 10:45 UTC1h 5m
2026-07-21 JIA5344 PWM → PHL Jul 21, 02:35 UTCJul 21, 03:25 UTC50m
2026-07-20 JIA5416 MSN → PHL Jul 20, 23:25 UTCJul 21, 01:20 UTC1h 54m
2026-07-20 JIA5416 MSN → PHL Jul 20, 20:15 UTCJul 20, 22:40 UTC2h 25m
2026-07-20 JIA5104 - Jul 20, 17:40 UTCJul 20, 18:30 UTC50m
2026-07-20 JIA5104 DCA → BUF Jul 20, 15:15 UTCJul 20, 16:10 UTC55m
2026-07-20 JIA5312 MSP → DCA Jul 20, 11:45 UTCJul 20, 14:00 UTC2h 15m
2026-07-20 JIA5506 DCA → MSP Jul 20, 01:55 UTCJul 20, 04:10 UTC2h 15m
2026-07-19 JIA5470 PHL → CMH Jul 19, 23:05 UTCJul 19, 23:55 UTC50m
2026-07-19 JIA5470 PHL → CMH Jul 19, 23:01 UTCJul 19, 23:55 UTC54m
2026-07-19 JIA5470 PHL → CMH Jul 19, 20:45 UTCJul 19, 21:45 UTC1h 0m
2026-07-19 JIA5589 PVD → DCA Jul 19, 17:45 UTCJul 19, 18:45 UTC1h 0m
2026-07-19 JIA5589 PVD → DCA Jul 19, 15:55 UTCJul 19, 16:40 UTC45m
2026-07-19 JIA5561 DCA → BHM Jul 19, 12:35 UTCJul 19, 14:05 UTC1h 30m
2026-07-19 JIA9862 CLE → BHM Jul 19, 02:05 UTCJul 19, 03:25 UTC1h 20m

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 N500AE page for operator, model, and routing details .

Mode-S A639F5 frequently asked

What is Mode-S code A639F5?
A639F5 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N500AE.
Where is Mode-S A639F5 registered?
Mode-S code A639F5 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 A639F5 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 19:55 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A639F5, octal 51434765, decimal 10,893,813.
What flights does A639F5 operate?
Mode-S A639F5 has broadcast 20 distinct callsigns, including JIA5282, JIA5077, JIA5606, JIA5604, JIA5080.