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sensors Mode-S transponder

AD159B

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N942LL · EMBRAER ERJ-145 · operated by AMERICAN AIRLINES INC

Hex
AD159B
Octal
53212633
Decimal
11,343,259
Country
US
Tail
N942LL
Type
E145
No current signal · last broadcast 11d ago
Flights observed
556
Distinct callsigns
20
Country
US
Last broadcast
11d ago

Last known position

Most recent position reported by Mode-S AD159B.

Country allocation

The ICAO 24-bit address AD159B 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
PDT5876 Piedmont Airlines 12 2026-05-31
PDT5801 Piedmont Airlines 11 2026-06-15
PDT6034 - 10 2026-06-20
PDT6024 Piedmont Airlines 10 2026-06-09
PDT5982 Piedmont Airlines 9 2026-05-26
PDT6121 - 8 2026-06-18
PDT6120 Piedmont Airlines 7 2026-05-25
PDT6031 Piedmont Airlines 7 2026-06-06
PDT6018 - 7 2026-06-24
PDT6016 Piedmont Airlines 7 2026-05-15
PDT5869 - 7 2026-06-25
PDT6083 - 6 2026-06-19
PDT6026 Piedmont Airlines 6 2026-06-01
PDT5971 Piedmont Airlines 6 2026-06-22
PDT5969 Piedmont Airlines 6 2026-06-16
PDT5859 Piedmont Airlines 6 2026-06-18
PDT888Q Piedmont Airlines 5 2026-06-20
PDT6132 - 5 2026-06-19
PDT6128 Piedmont Airlines 5 2026-05-08
PDT6125 Piedmont Airlines 5 2026-05-30

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-02 PDT9975 - Jul 2, 12:55 UTCJul 2, 15:10 UTC2h 15m
2026-06-30 PDT5962 PHL → MHT Jun 30, 13:25 UTCJun 30, 14:10 UTC45m
2026-06-30 PDT5962 PHL → MHT Jun 30, 13:20 UTCJun 30, 14:10 UTC50m
2026-06-30 PDT5943 - Jun 30, 03:15 UTCJun 30, 03:45 UTC30m
2026-06-27 PDT8854 - Jun 27, 11:25 UTCJun 27, 12:04 UTC40m
2026-06-27 PDT5909 - Jun 27, 03:04 UTCJun 27, 03:40 UTC35m
2026-06-26 PDT5988 - Jun 26, 21:30 UTCJun 26, 22:34 UTC1h 5m
2026-06-26 PDT5988 - Jun 26, 18:44 UTCJun 26, 19:39 UTC55m
2026-06-26 PDT6129 - Jun 26, 16:14 UTCJun 26, 17:19 UTC1h 5m
2026-06-26 PDT6129 - Jun 26, 14:09 UTCJun 26, 15:15 UTC1h 5m
2026-06-26 PDT5985 - Jun 26, 09:14 UTCJun 26, 10:05 UTC50m
2026-06-26 PDT5985 PHF → CLT Jun 26, 09:10 UTCJun 26, 10:03 UTC53m
2026-06-26 PDT5938 - Jun 26, 03:29 UTCJun 26, 04:20 UTC50m
2026-06-25 PDT6116 - Jun 25, 22:20 UTCJun 25, 23:05 UTC45m
2026-06-25 PDT6116 - Jun 25, 20:49 UTCJun 25, 21:15 UTC25m
2026-06-25 PDT6047 - Jun 25, 18:45 UTCJun 25, 19:15 UTC30m
2026-06-25 PDT6047 - Jun 25, 17:39 UTCJun 25, 17:54 UTC15m
2026-06-25 PDT5869 - Jun 25, 15:24 UTCJun 25, 16:20 UTC55m
2026-06-25 PDT5869 - Jun 25, 13:55 UTCJun 25, 14:39 UTC45m
2026-06-24 PDT6018 - Jun 24, 22:45 UTCJun 24, 23:14 UTC30m
2026-06-24 PDT6018 - Jun 24, 21:24 UTCJun 24, 21:54 UTC30m
2026-06-24 PDT5844 - Jun 24, 17:59 UTCJun 24, 19:15 UTC1h 15m
2026-06-24 PDT5844 - Jun 24, 15:54 UTCJun 24, 17:20 UTC1h 25m
2026-06-24 PDT5897 - Jun 24, 13:34 UTCJun 24, 14:39 UTC1h 5m
2026-06-24 PDT5860 - Jun 24, 11:59 UTCJun 24, 12:54 UTC55m
2026-06-23 PDT5972 - Jun 23, 12:25 UTCJun 23, 13:45 UTC1h 20m
2026-06-23 PDT5970 - Jun 23, 01:40 UTCJun 23, 02:55 UTC1h 15m
2026-06-22 PDT5839 - Jun 22, 20:30 UTCJun 22, 21:30 UTC1h 0m
2026-06-22 PDT5839 MGM → CLT Jun 22, 20:25 UTCJun 22, 21:31 UTC1h 6m
2026-06-22 PDT5839 - Jun 22, 18:30 UTCJun 22, 19:24 UTC55m
2026-06-22 PDT6000 - Jun 22, 16:10 UTCJun 22, 17:10 UTC1h 0m
2026-06-22 PDT6000 TLH → CLT Jun 22, 16:05 UTCJun 22, 17:08 UTC1h 3m
2026-06-22 PDT6000 - Jun 22, 14:19 UTCJun 22, 15:20 UTC1h 0m
2026-06-22 PDT5955 - Jun 22, 10:34 UTCJun 22, 11:09 UTC35m
2026-06-22 PDT5971 PHL → CAE Jun 22, 03:40 UTCJun 22, 04:09 UTC30m
2026-06-22 PDT5811 - Jun 22, 00:24 UTCJun 22, 01:19 UTC55m
2026-06-22 PDT5811 HSV → CLT Jun 22, 00:23 UTCJun 22, 01:18 UTC55m
2026-06-21 PDT5811 - Jun 21, 22:40 UTCJun 21, 23:30 UTC50m
2026-06-21 PDT5823 - Jun 21, 20:50 UTCJun 21, 21:24 UTC35m
2026-06-21 PDT5823 ILM → CLT Jun 21, 20:45 UTCJun 21, 21:25 UTC40m
2026-06-21 PDT5823 - Jun 21, 19:05 UTCJun 21, 19:29 UTC25m
2026-06-21 PDT5824 - Jun 21, 16:19 UTCJun 21, 16:44 UTC25m
2026-06-21 PDT5824 JAN → CLT Jun 21, 15:59 UTCJun 21, 17:18 UTC1h 19m
2026-06-21 PDT5824 - Jun 21, 13:34 UTCJun 21, 14:40 UTC1h 5m
2026-06-21 PDT5833 - Jun 21, 10:49 UTCJun 21, 11:59 UTC1h 10m
2026-06-21 PDT6109 PHL → ALB Jun 21, 01:41 UTCJun 21, 02:00 UTC19m
2026-06-20 PDT6034 - Jun 20, 23:39 UTCJun 21, 00:45 UTC1h 5m
2026-06-20 PDT888Q PHL → YQB Jun 20, 18:34 UTCJun 20, 19:55 UTC1h 20m
2026-06-20 PDT5888 PHL → CLE Jun 20, 16:14 UTCJun 20, 17:34 UTC1h 20m
2026-06-20 PDT5958 - Jun 20, 14:14 UTCJun 20, 15:09 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 N942LL page for operator, model, and routing details .

Mode-S AD159B frequently asked

What is Mode-S code AD159B?
AD159B is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N942LL.
Where is Mode-S AD159B registered?
Mode-S code AD159B 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 AD159B broadcasting right now?
No active broadcast right now. Last signal was 11d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AD159B, octal 53212633, decimal 11,343,259.
What flights does AD159B operate?
Mode-S AD159B has broadcast 20 distinct callsigns, including PDT5876, PDT5801, PDT6034, PDT6024, PDT5982.