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sensors Mode-S transponder

A944B9

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N697AB · EMBRAER ERJ-145 · operated by AMERICAN AIRLINES INC

Hex
A944B9
Octal
52242271
Decimal
11,093,177
Country
US
Tail
N697AB
Type
E145
No current signal · last broadcast Jul 26, 22:15 UTC
Flights observed
924
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 22:15 UTC

Last known position

Most recent position reported by Mode-S A944B9.

Country allocation

The ICAO 24-bit address A944B9 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
PDT5831 - 14 2026-07-15
PDT5802 - 13 2026-07-19
PDT5793 - 12 2026-07-01
PDT5832 Piedmont Airlines 11 2026-07-24
PDT5807 Piedmont Airlines 11 2026-07-25
PDT5969 - 10 2026-06-28
PDT5957 - 10 2026-07-20
PDT5847 Piedmont Airlines 10 2026-06-16
PDT6067 - 9 2026-07-16
PDT6000 - 9 2026-07-17
PDT5988 - 9 2026-07-10
PDT5913 Piedmont Airlines 9 2026-07-25
PDT5828 - 9 2026-07-14
PDT5819 - 9 2026-07-20
PDT6016 - 8 2026-06-24
PDT5869 Piedmont Airlines 8 2026-07-26
PDT5852 - 8 2026-07-19
PDT5845 - 8 2026-07-07
PDT5823 - 8 2026-07-19
PDT5814 - 8 2026-07-07

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 PDT5839 PHL → SCE Jul 26, 21:30 UTCJul 26, 22:15 UTC45m
2026-07-26 PDT5839 PHL → SCE Jul 26, 19:35 UTCJul 26, 20:30 UTC55m
2026-07-26 PDT5869 AZO → ORD Jul 26, 17:25 UTCJul 26, 18:25 UTC1h 0m
2026-07-26 PDT5869 AZO → ORD Jul 26, 15:40 UTCJul 26, 16:25 UTC45m
2026-07-26 PDT6054 PHL → SBY Jul 26, 13:20 UTCJul 26, 14:05 UTC45m
2026-07-26 PDT6054 PHL → SBY Jul 26, 11:45 UTCJul 26, 12:25 UTC40m
2026-07-26 PDT5921 PHL → LEX Jul 26, 09:20 UTCJul 26, 09:55 UTC35m
2026-07-26 PDT5834 CLT → ROA Jul 26, 00:50 UTCJul 26, 01:20 UTC30m
2026-07-26 PDT5834 CLT → ROA Jul 26, 00:46 UTCJul 26, 01:18 UTC32m
2026-07-25 PDT5807 CLT → MGM Jul 25, 22:45 UTCJul 25, 23:40 UTC55m
2026-07-25 PDT5807 CLT → MGM Jul 25, 22:40 UTCJul 25, 23:39 UTC59m
2026-07-25 PDT5807 CLT → MGM Jul 25, 20:55 UTCJul 25, 21:50 UTC55m
2026-07-25 PDT5948 PHL → ROC Jul 25, 17:50 UTCJul 25, 19:35 UTC1h 45m
2026-07-25 PDT5948 PHL → ROC Jul 25, 17:47 UTCJul 25, 19:30 UTC1h 43m
2026-07-25 PDT5948 PHL → ROC Jul 25, 15:00 UTCJul 25, 16:45 UTC1h 45m
2026-07-25 PDT6048 CLT → EVV Jul 25, 13:10 UTCJul 25, 13:40 UTC30m
2026-07-25 PDT6048 CLT → EVV Jul 25, 13:08 UTCJul 25, 13:31 UTC23m
2026-07-25 PDT6048 CLT → EVV Jul 25, 11:35 UTCJul 25, 12:00 UTC25m
2026-07-25 PDT5842 ROA → PHL Jul 25, 09:20 UTCJul 25, 10:05 UTC45m
2026-07-25 PDT5842 ROA → PHL Jul 25, 09:19 UTCJul 25, 10:03 UTC44m
2026-07-25 PDT5913 PHL → SYR Jul 25, 03:40 UTCJul 25, 04:05 UTC25m
2026-07-25 PDT5811 PIT → PHL Jul 25, 00:15 UTCJul 25, 01:10 UTC55m
2026-07-24 PDT5811 PIT → PHL Jul 24, 22:20 UTCJul 24, 23:20 UTC1h 0m
2026-07-24 PDT5832 GSO → PHL Jul 24, 19:40 UTCJul 24, 20:55 UTC1h 15m
2026-07-24 PDT5832 GSO → PHL Jul 24, 19:39 UTCJul 24, 20:48 UTC1h 9m
2026-07-24 PDT5832 GSO → PHL Jul 24, 17:35 UTCJul 24, 18:40 UTC1h 5m
2026-07-24 PDT6073 - Jul 24, 15:15 UTCJul 24, 16:00 UTC45m
2026-07-24 PDT6073 LYH → CLT Jul 24, 15:09 UTCJul 24, 15:55 UTC46m
2026-07-24 PDT6073 - Jul 24, 13:40 UTCJul 24, 14:10 UTC30m
2026-07-24 PDT5992 GSP → PHL Jul 24, 11:25 UTCJul 24, 12:00 UTC35m
2026-07-24 PDT6019 YYZ → PHL Jul 24, 03:40 UTCJul 24, 04:00 UTC20m
2026-07-24 PDT5811 PIT → PHL Jul 24, 00:55 UTCJul 24, 01:55 UTC1h 0m
2026-07-23 PDT5811 PIT → PHL Jul 23, 22:55 UTCJul 24, 00:05 UTC1h 10m
2026-07-23 PDT5832 GSO → PHL Jul 23, 19:45 UTCJul 23, 21:00 UTC1h 15m
2026-07-23 PDT5832 GSO → PHL Jul 23, 19:40 UTCJul 23, 20:58 UTC1h 18m
2026-07-23 PDT5832 GSO → PHL Jul 23, 17:45 UTCJul 23, 18:50 UTC1h 5m
2026-07-23 PDT6099 CVG → CLT Jul 23, 16:00 UTCJul 23, 16:20 UTC20m
2026-07-23 PDT5800 PHL → RIC Jul 23, 13:30 UTCJul 23, 14:55 UTC1h 25m
2026-07-23 PDT5800 PHL → RIC Jul 23, 13:35 UTCJul 23, 14:50 UTC1h 15m
2026-07-23 PDT6095 - Jul 23, 10:15 UTCJul 23, 10:55 UTC40m
2026-07-23 PDT6103 ROC → BOS Jul 23, 02:55 UTCJul 23, 03:35 UTC40m
2026-07-23 PDT5942 DTW → PHL Jul 23, 00:40 UTCJul 23, 01:40 UTC1h 0m
2026-07-23 PDT5942 DTW → PHL Jul 23, 00:36 UTCJul 23, 01:42 UTC1h 6m
2026-07-22 PDT5942 DTW → PHL Jul 22, 22:50 UTCJul 22, 23:50 UTC1h 0m
2026-07-22 PDT5859 PHL → BGR Jul 22, 21:00 UTCJul 22, 21:40 UTC40m
2026-07-22 PDT5859 PHL → BGR Jul 22, 20:55 UTCJul 22, 21:39 UTC44m
2026-07-22 PDT5859 PHL → BGR Jul 22, 19:25 UTCJul 22, 20:20 UTC55m
2026-07-22 PDT6123 BUF → PHL Jul 22, 15:40 UTCJul 22, 17:00 UTC1h 20m
2026-07-22 PDT6123 BUF → PHL Jul 22, 15:39 UTCJul 22, 17:10 UTC1h 31m
2026-07-22 PDT6123 BUF → PHL Jul 22, 13:20 UTCJul 22, 14:30 UTC1h 10m

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 N697AB page for operator, model, and routing details .

Mode-S A944B9 frequently asked

What is Mode-S code A944B9?
A944B9 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N697AB.
Where is Mode-S A944B9 registered?
Mode-S code A944B9 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 A944B9 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 22:15 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A944B9, octal 52242271, decimal 11,093,177.
What flights does A944B9 operate?
Mode-S A944B9 has broadcast 20 distinct callsigns, including PDT5831, PDT5802, PDT5793, PDT5832, PDT5807.