Apparatus

Try JFK, AAL1290, BAW, or N225AN.

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 2h ago
Flights observed
395
Distinct callsigns
20
Country
US
Last broadcast
2h ago

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 - 11 2026-07-12
PDT6124 Piedmont Airlines 8 2026-05-21
PDT6020 - 8 2026-07-13
PDT5978 Piedmont Airlines 8 2026-04-27
PDT5799 Piedmont Airlines 8 2026-05-08
PDT6022 - 7 2026-07-13
PDT5994 Piedmont Airlines 7 2026-05-17
PDT5918 - 7 2026-07-11
PDT5884 - 7 2026-07-13
PDT5822 Piedmont Airlines 7 2026-05-13
PDT5802 Piedmont Airlines 7 2026-05-13
PDT6121 Piedmont Airlines 6 2026-05-20
PDT6001 Piedmont Airlines 6 2026-05-05
PDT5974 Piedmont Airlines 6 2026-05-22
PDT6123 - 5 2026-07-10
PDT6080 Piedmont Airlines 5 2026-05-16
PDT5950 Piedmont Airlines 5 2026-05-18
PDT5941 Piedmont Airlines 5 2026-05-15
PDT5848 - 5 2026-07-13
PDT6127 - 4 2026-04-17

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-13 PDT5864 - Jul 13, 23:55 UTCJul 14, 01:00 UTC1h 5m
2026-07-13 PDT5884 - Jul 13, 20:35 UTCJul 13, 21:35 UTC1h 0m
2026-07-13 PDT5884 YYZ → PHL Jul 13, 20:35 UTCJul 13, 21:35 UTC1h 0m
2026-07-13 PDT5884 - Jul 13, 18:00 UTCJul 13, 19:10 UTC1h 10m
2026-07-13 PDT5848 - Jul 13, 15:35 UTCJul 13, 16:50 UTC1h 15m
2026-07-13 PDT5848 MYR → PHL Jul 13, 15:29 UTCJul 13, 16:51 UTC1h 22m
2026-07-13 PDT5848 - Jul 13, 13:25 UTCJul 13, 14:35 UTC1h 10m
2026-07-13 PDT6022 - Jul 13, 10:25 UTCJul 13, 11:10 UTC45m
2026-07-13 PDT6022 ART → PHL Jul 13, 10:22 UTCJul 13, 11:17 UTC55m
2026-07-13 PDT6020 - Jul 13, 01:55 UTCJul 13, 02:40 UTC45m
2026-07-12 PDT5952 - Jul 12, 22:55 UTCJul 13, 00:20 UTC1h 25m
2026-07-12 PDT5952 - Jul 12, 20:35 UTCJul 12, 22:00 UTC1h 25m
2026-07-12 PDT6120 - Jul 12, 18:15 UTCJul 12, 19:30 UTC1h 15m
2026-07-12 PDT6120 MYR → PHL Jul 12, 18:09 UTCJul 12, 19:25 UTC1h 16m
2026-07-12 PDT6120 - Jul 12, 15:50 UTCJul 12, 16:55 UTC1h 5m
2026-07-12 PDT5928 - Jul 12, 13:30 UTCJul 12, 14:30 UTC1h 0m
2026-07-12 PDT5926 - Jul 12, 00:55 UTCJul 12, 02:01 UTC1h 5m
2026-07-11 PDT5924 - Jul 11, 20:25 UTCJul 11, 21:15 UTC50m
2026-07-11 PDT5924 SYR → PHL Jul 11, 20:22 UTCJul 11, 21:11 UTC49m
2026-07-11 PDT5924 - Jul 11, 17:30 UTCJul 11, 18:10 UTC40m
2026-07-11 PDT5925 - Jul 11, 14:55 UTCJul 11, 15:50 UTC55m
2026-07-11 PDT5925 BUF → PHL Jul 11, 14:53 UTCJul 11, 15:49 UTC56m
2026-07-11 PDT5925 PHL → BUF Jul 11, 13:00 UTCJul 11, 14:00 UTC1h 0m
2026-07-11 PDT5918 - Jul 11, 00:10 UTCJul 11, 01:05 UTC55m
2026-07-11 PDT5918 SCE → PHL Jul 11, 00:04 UTCJul 11, 00:46 UTC42m
2026-07-10 PDT5918 - Jul 10, 22:35 UTCJul 10, 23:10 UTC35m
2026-07-10 PDT5859 - Jul 10, 20:55 UTCJul 10, 21:40 UTC45m
2026-07-10 PDT5859 - Jul 10, 18:00 UTCJul 10, 18:35 UTC35m
2026-07-10 PDT6123 BGR → PHL Jul 10, 15:25 UTCJul 10, 16:45 UTC1h 20m
2026-07-10 PDT6123 BGR → PHL Jul 10, 15:21 UTCJul 10, 16:44 UTC1h 23m
2026-07-10 PDT6123 - Jul 10, 13:25 UTCJul 10, 14:35 UTC1h 10m
2026-07-10 PDT5937 YYZ → PHL Jul 10, 10:35 UTCJul 10, 11:35 UTC1h 0m
2026-07-10 PDT5919 - Jul 10, 03:30 UTCJul 10, 04:30 UTC1h 0m
2026-07-10 PDT6108 - Jul 10, 01:30 UTCJul 10, 02:20 UTC50m
2026-07-09 PDT6108 PHL → ROC Jul 9, 22:55 UTCJul 9, 23:55 UTC1h 0m
2026-07-09 PDT5951 - Jul 9, 19:20 UTCJul 9, 20:40 UTC1h 20m
2026-07-09 PDT5951 - Jul 9, 15:30 UTCJul 9, 16:55 UTC1h 25m
2026-07-09 PDT5928 - Jul 9, 12:25 UTCJul 9, 13:50 UTC1h 25m
2026-07-09 PDT5928 ROA → PHL Jul 9, 12:20 UTCJul 9, 13:23 UTC1h 3m
2026-07-08 PDT5926 - Jul 8, 22:50 UTCJul 8, 23:35 UTC45m
2026-07-08 PDT5926 - Jul 8, 22:35 UTCJul 8, 22:45 UTC10m
2026-07-08 PDT6132 - Jul 8, 18:55 UTCJul 8, 20:15 UTC1h 20m
2026-07-08 PDT6132 GSP → PHL Jul 8, 18:54 UTCJul 8, 20:14 UTC1h 20m
2026-07-08 PDT6132 - Jul 8, 16:10 UTCJul 8, 17:40 UTC1h 30m
2026-07-03 PDT9976 - Jul 3, 22:45 UTCJul 4, 01:05 UTC2h 20m
2026-07-03 PDT9976 - Jul 3, 20:15 UTCJul 3, 21:35 UTC1h 20m
2026-05-23 PDT9979 PHL → MDT May 23, 20:10 UTCMay 23, 21:25 UTC1h 15m
2026-05-23 PDT9982 PHL → SBY May 23, 16:20 UTCMay 23, 19:00 UTC2h 41m
2026-05-23 PDT6092 ORD → MSN May 23, 00:25 UTCMay 23, 01:15 UTC50m
2026-05-23 PDT6092 ORD → MSN May 23, 00:20 UTCMay 23, 01:10 UTC50m

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 2h ago.
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, PDT6124, PDT6020, PDT5978, PDT5799.