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sensors Mode-S transponder

ACC954

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N923AE · EMBRAER ERJ-145 · operated by AMERICAN AIRLINES INC

Hex
ACC954
Octal
53144524
Decimal
11,323,732
Country
US
Tail
N923AE
Type
E145
No current signal · last broadcast Jul 26, 23:00 UTC
Flights observed
494
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 23:00 UTC

Last known position

Most recent position reported by Mode-S ACC954.

Country allocation

The ICAO 24-bit address ACC954 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
PDT5952 Piedmont Airlines 13 2026-07-24
PDT5884 Piedmont Airlines 13 2026-07-23
PDT6020 Piedmont Airlines 11 2026-07-25
PDT5848 Piedmont Airlines 10 2026-07-23
PDT6022 Piedmont Airlines 9 2026-07-25
PDT6124 Piedmont Airlines 8 2026-05-21
PDT5978 Piedmont Airlines 8 2026-04-27
PDT5799 Piedmont Airlines 8 2026-05-08
PDT5994 Piedmont Airlines 7 2026-05-17
PDT5918 - 7 2026-07-11
PDT5887 Piedmont Airlines 7 2026-07-22
PDT5822 Piedmont Airlines 7 2026-05-13
PDT5802 Piedmont Airlines 7 2026-05-13
PDT6121 Piedmont Airlines 6 2026-05-20
PDT6035 Piedmont Airlines 6 2026-07-22
PDT6001 Piedmont Airlines 6 2026-05-05
PDT5974 Piedmont Airlines 6 2026-05-22
PDT5894 - 6 2026-07-18
PDT6123 - 5 2026-07-10
PDT6114 Piedmont Airlines 5 2026-07-26

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 PDT5825 PHL → GSP Jul 26, 22:15 UTCJul 26, 23:00 UTC45m
2026-07-26 PDT5825 PHL → GSP Jul 26, 20:45 UTCJul 26, 21:20 UTC35m
2026-07-26 PDT6047 FWA → PHL Jul 26, 18:40 UTCJul 26, 19:00 UTC20m
2026-07-26 PDT6047 FWA → PHL Jul 26, 17:20 UTCJul 26, 17:40 UTC20m
2026-07-26 PDT5786 GSP → PHL Jul 26, 15:00 UTCJul 26, 16:05 UTC1h 5m
2026-07-26 PDT5786 GSP → PHL Jul 26, 14:55 UTCJul 26, 16:06 UTC1h 11m
2026-07-26 PDT5829 CLT → PGV Jul 26, 13:40 UTCJul 26, 14:05 UTC25m
2026-07-26 PDT6013 PHL → SDF Jul 26, 11:00 UTCJul 26, 11:20 UTC20m
2026-07-26 PDT6013 PHL → SDF Jul 26, 10:59 UTCJul 26, 11:27 UTC28m
2026-07-26 PDT6114 YYZ → PHL Jul 26, 02:05 UTCJul 26, 02:35 UTC30m
2026-07-26 PDT6114 YYZ → PHL Jul 26, 00:15 UTCJul 26, 01:05 UTC50m
2026-07-25 PDT6114 YYZ → PHL Jul 25, 22:35 UTCJul 25, 23:25 UTC50m
2026-07-25 PDT6005 CLE → PHL Jul 25, 20:10 UTCJul 25, 21:00 UTC50m
2026-07-25 PDT5900 ORD → TYS Jul 25, 17:50 UTCJul 25, 18:20 UTC30m
2026-07-25 PDT6099 CVG → CLT Jul 25, 15:30 UTCJul 25, 15:50 UTC20m
2026-07-25 PDT5800 PHL → RIC Jul 25, 13:00 UTCJul 25, 14:25 UTC1h 25m
2026-07-25 PDT5800 PHL → RIC Jul 25, 12:59 UTCJul 25, 14:25 UTC1h 26m
2026-07-25 PDT6022 ROC → BOS Jul 25, 10:10 UTCJul 25, 11:00 UTC50m
2026-07-25 PDT6020 CVG → PHL Jul 25, 01:50 UTCJul 25, 02:40 UTC50m
2026-07-24 PDT5849 MDT → CLT Jul 24, 23:20 UTCJul 25, 00:30 UTC1h 10m
2026-07-24 PDT5849 MDT → CLT Jul 24, 20:55 UTCJul 24, 22:09 UTC1h 14m
2026-07-24 PDT6041 CLT → LEX Jul 24, 19:10 UTCJul 24, 20:00 UTC50m
2026-07-24 PDT6041 CLT → LEX Jul 24, 17:25 UTCJul 24, 18:20 UTC55m
2026-07-24 PDT6122 ILM → PHL Jul 24, 15:35 UTCJul 24, 16:10 UTC35m
2026-07-24 PDT6122 ILM → PHL Jul 24, 14:10 UTCJul 24, 14:55 UTC45m
2026-07-24 PDT5904 CLT → FAY Jul 24, 11:20 UTCJul 24, 12:05 UTC45m
2026-07-24 PDT6090 ART → PHL Jul 24, 04:10 UTCJul 24, 04:55 UTC45m
2026-07-24 PDT6090 ART → PHL Jul 24, 04:06 UTCJul 24, 04:51 UTC45m
2026-07-24 PDT5952 BDL → PHL Jul 24, 01:55 UTCJul 24, 03:15 UTC1h 20m
2026-07-23 PDT5952 BDL → PHL Jul 23, 23:40 UTCJul 24, 01:05 UTC1h 25m
2026-07-23 PDT5884 YYZ → PHL Jul 23, 21:00 UTCJul 23, 22:00 UTC1h 0m
2026-07-23 PDT5884 YYZ → PHL Jul 23, 20:57 UTCJul 23, 22:00 UTC1h 3m
2026-07-23 PDT5884 YYZ → PHL Jul 23, 19:00 UTCJul 23, 20:05 UTC1h 5m
2026-07-23 PDT5848 CHO → CLT Jul 23, 16:25 UTCJul 23, 17:35 UTC1h 10m
2026-07-23 PDT5848 CHO → CLT Jul 23, 14:00 UTCJul 23, 15:25 UTC1h 25m
2026-07-23 PDT6111 GSP → PHL Jul 23, 10:25 UTCJul 23, 11:20 UTC55m
2026-07-23 PDT6107 PHL → ALB Jul 23, 01:55 UTCJul 23, 02:30 UTC35m
2026-07-22 PDT5837 OAJ → CLT Jul 22, 23:30 UTCJul 23, 00:10 UTC40m
2026-07-22 PDT5837 OAJ → CLT Jul 22, 22:00 UTCJul 22, 22:35 UTC35m
2026-07-22 PDT6036 SCE → PHL Jul 22, 19:40 UTCJul 22, 20:50 UTC1h 10m
2026-07-22 PDT6035 GSP → PHL Jul 22, 17:55 UTCJul 22, 18:35 UTC40m
2026-07-22 PDT5887 YYZ → PHL Jul 22, 12:33 UTCJul 22, 13:39 UTC1h 6m
2026-07-22 PDT5887 YYZ → PHL Jul 22, 12:35 UTCJul 22, 13:35 UTC1h 0m
2026-07-22 PDT5919 PHL → ALB Jul 22, 02:15 UTCJul 22, 03:00 UTC45m
2026-07-22 PDT5919 PHL → ALB Jul 22, 02:10 UTCJul 22, 03:20 UTC1h 10m
2026-07-21 PDT5887 YYZ → PHL Jul 21, 12:25 UTCJul 21, 13:30 UTC1h 5m
2026-07-21 PDT5887 YYZ → PHL Jul 21, 12:23 UTCJul 21, 13:25 UTC1h 2m
2026-07-21 PDT5864 GSO → PHL Jul 21, 00:30 UTCJul 21, 01:35 UTC1h 5m
2026-07-20 PDT6024 BOS → ROC Jul 20, 22:35 UTCJul 20, 23:20 UTC45m
2026-07-20 PDT6024 BOS → ROC Jul 20, 20:55 UTCJul 20, 21:40 UTC45m

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 N923AE page for operator, model, and routing details .

Mode-S ACC954 frequently asked

What is Mode-S code ACC954?
ACC954 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N923AE.
Where is Mode-S ACC954 registered?
Mode-S code ACC954 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 ACC954 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 23:00 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex ACC954, octal 53144524, decimal 11,323,732.
What flights does ACC954 operate?
Mode-S ACC954 has broadcast 20 distinct callsigns, including PDT5952, PDT5884, PDT6020, PDT5848, PDT6022.