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sensors Mode-S transponder

A99B1B

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N718PS · BOMBARDIER Regional Jet CRJ-700 · operated by AMERICAN AIRLINES INC

Hex
A99B1B
Octal
52315433
Decimal
11,115,291
Country
US
Tail
N718PS
Type
CRJ7
No current signal · last broadcast Jul 26, 17:15 UTC
Flights observed
635
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 17:15 UTC

Last known position

Most recent position reported by Mode-S A99B1B.

Country allocation

The ICAO 24-bit address A99B1B 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
JIA5330 PSA Airlines 10 2026-07-18
JIA5675 - 9 2026-06-16
JIA5251 PSA Airlines 8 2026-06-10
JIA5581 PSA Airlines 7 2026-07-20
JIA5567 PSA Airlines 7 2026-06-09
JIA5521 PSA Airlines 7 2026-06-10
JIA5515 - 7 2026-07-04
JIA5338 - 7 2026-06-25
JIA5231 PSA Airlines 7 2026-06-07
JIA5589 PSA Airlines 6 2026-05-29
JIA5527 PSA Airlines 6 2026-05-06
JIA5359 - 6 2026-07-14
JIA5356 PSA Airlines 6 2026-06-10
JIA5339 - 6 2026-06-20
JIA5334 PSA Airlines 6 2026-06-03
JIA5240 - 6 2026-07-07
JIA5139 - 6 2026-07-06
JIA5111 PSA Airlines 6 2026-06-09
JIA5043 - 6 2026-07-06
JIA5455 - 5 2026-07-10

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 JIA5642 PIT → DCA Jul 26, 17:00 UTCJul 26, 17:15 UTC15m
2026-07-26 JIA5642 PIT → DCA Jul 26, 14:50 UTCJul 26, 16:15 UTC1h 25m
2026-07-25 JIA9951 PIA → PHL Jul 25, 19:05 UTCJul 25, 20:20 UTC1h 15m
2026-07-20 JIA9953 MHT → DCA Jul 20, 21:55 UTCJul 20, 23:40 UTC1h 45m
2026-07-20 JIA5581 PHL → TYS Jul 20, 15:50 UTCJul 20, 16:45 UTC55m
2026-07-20 JIA5581 PHL → TYS Jul 20, 13:15 UTCJul 20, 14:00 UTC45m
2026-07-20 JIA5459 DCA → PVD Jul 20, 10:10 UTCJul 20, 11:40 UTC1h 30m
2026-07-20 JIA5436 ATL → PHL Jul 20, 03:30 UTCJul 20, 04:55 UTC1h 25m
2026-07-19 JIA5333 GSP → PHL Jul 19, 23:40 UTCJul 20, 02:20 UTC2h 40m
2026-07-19 JIA5333 GSP → PHL Jul 19, 18:55 UTCJul 19, 21:35 UTC2h 40m
2026-07-19 JIA5659 - Jul 19, 15:25 UTCJul 19, 16:25 UTC1h 0m
2026-07-19 JIA5659 - Jul 19, 13:10 UTCJul 19, 14:20 UTC1h 10m
2026-07-19 JIA5226 BUF → PHL Jul 19, 10:45 UTCJul 19, 11:50 UTC1h 5m
2026-07-19 JIA5523 CVG → DCA Jul 19, 01:55 UTCJul 19, 03:50 UTC1h 55m
2026-07-18 JIA5340 RSW → PHL Jul 18, 22:05 UTCJul 18, 23:45 UTC1h 40m
2026-07-18 JIA5564 - Jul 18, 19:35 UTCJul 18, 21:05 UTC1h 30m
2026-07-18 JIA5331 PHL → BHM Jul 18, 16:00 UTCJul 18, 16:50 UTC50m
2026-07-18 JIA5330 DCA → MSY Jul 18, 14:40 UTCJul 18, 15:05 UTC25m
2026-07-18 JIA5503 DCA → PVD Jul 18, 11:25 UTCJul 18, 13:00 UTC1h 35m
2026-07-18 JIA5373 - Jul 18, 03:25 UTCJul 18, 05:05 UTC1h 40m
2026-07-18 JIA5373 DCA → MSN Jul 18, 03:22 UTCJul 18, 05:02 UTC1h 40m
2026-07-17 JIA5224 CLT → CVG Jul 17, 22:00 UTCJul 18, 00:19 UTC2h 20m
2026-07-17 JIA5224 CLT → CVG Jul 17, 17:40 UTCJul 17, 20:04 UTC2h 25m
2026-07-17 JIA5581 RDU → DCA Jul 17, 15:35 UTCJul 17, 16:15 UTC40m
2026-07-17 JIA5581 DCA → RDU Jul 17, 13:35 UTCJul 17, 14:20 UTC45m
2026-07-17 JIA5459 DCA → PVD Jul 17, 10:06 UTCJul 17, 11:35 UTC1h 29m
2026-07-17 JIA5459 DCA → PVD Jul 17, 10:10 UTCJul 17, 11:45 UTC1h 35m
2026-07-17 JIA5436 ATL → PHL Jul 17, 03:59 UTCJul 17, 05:25 UTC1h 25m
2026-07-17 JIA5436 ATL → PHL Jul 17, 03:59 UTCJul 17, 05:23 UTC1h 24m
2026-07-17 JIA5108 - Jul 17, 01:35 UTCJul 17, 02:39 UTC1h 5m
2026-07-16 JIA5108 - Jul 16, 23:15 UTCJul 17, 00:04 UTC50m
2026-07-16 JIA5526 - Jul 16, 16:05 UTCJul 16, 18:59 UTC2h 55m
2026-07-16 JIA5467 - Jul 16, 12:09 UTCJul 16, 14:35 UTC2h 25m
2026-07-16 JIA5062 CAK → DCA Jul 16, 09:35 UTCJul 16, 10:20 UTC45m
2026-07-16 JIA5062 CAK → DCA Jul 16, 09:30 UTCJul 16, 10:16 UTC46m
2026-07-15 JIA5305 - Jul 15, 23:00 UTCJul 15, 23:55 UTC55m
2026-07-15 JIA5301 - Jul 15, 10:25 UTCJul 15, 11:35 UTC1h 10m
2026-07-15 JIA5376 - Jul 15, 03:55 UTCJul 15, 05:10 UTC1h 15m
2026-07-14 JIA5104 - Jul 14, 20:40 UTCJul 14, 21:35 UTC55m
2026-07-14 JIA5104 - Jul 14, 14:40 UTCJul 14, 15:30 UTC50m
2026-07-14 JIA5359 - Jul 14, 11:45 UTCJul 14, 13:30 UTC1h 45m
2026-07-14 JIA5025 - Jul 14, 01:20 UTCJul 14, 03:10 UTC1h 50m
2026-07-13 JIA5670 - Jul 13, 21:35 UTCJul 13, 23:40 UTC2h 5m
2026-07-13 JIA5670 - Jul 13, 18:20 UTCJul 13, 20:30 UTC2h 10m
2026-07-13 JIA5374 - Jul 13, 16:20 UTCJul 13, 17:10 UTC50m
2026-07-13 JIA5374 ROC → DCA Jul 13, 16:17 UTCJul 13, 17:10 UTC53m
2026-07-13 JIA5374 - Jul 13, 14:30 UTCJul 13, 15:25 UTC55m
2026-07-13 JIA5440 BNA → DCA Jul 13, 11:25 UTCJul 13, 12:40 UTC1h 15m
2026-07-13 JIA5513 DCA → BNA Jul 13, 03:01 UTCJul 13, 04:25 UTC1h 25m
2026-07-13 JIA5412 BDL → DCA Jul 13, 00:40 UTCJul 13, 01:35 UTC55m

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 N718PS page for operator, model, and routing details .

Mode-S A99B1B frequently asked

What is Mode-S code A99B1B?
A99B1B is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N718PS.
Where is Mode-S A99B1B registered?
Mode-S code A99B1B 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 A99B1B broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 17:15 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A99B1B, octal 52315433, decimal 11,115,291.
What flights does A99B1B operate?
Mode-S A99B1B has broadcast 20 distinct callsigns, including JIA5330, JIA5675, JIA5251, JIA5581, JIA5567.