Apparatus

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sensors Mode-S transponder

AB34E1

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N821DD · CESSNA 208 Caravan · operated by PLANE 8 LLC

Hex
AB34E1
Octal
52632341
Decimal
11,220,193
Country
US
Tail
N821DD
Type
C208
No current signal · last broadcast Jul 26, 15:10 UTC
Flights observed
146
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 15:10 UTC

Last known position

Most recent position reported by Mode-S AB34E1.

Country allocation

The ICAO 24-bit address AB34E1 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
N821DD - 13 2026-07-19
WMA1534 Watermakers Air 8 2026-07-22
WMA2407 Watermakers Air 7 2026-07-26
WMA9219 Watermakers Air 6 2026-07-23
WMA412 - 6 2026-07-22
WMA9371 Watermakers Air 5 2026-06-21
WMA675 - 5 2026-07-20
WMA9372 Watermakers Air 4 2026-06-21
WMA9218 Watermakers Air 4 2026-07-23
WMA634 Watermakers Air 4 2026-07-24
WMA413 - 4 2026-07-13
WMA27 - 4 2026-07-09
WMA26 Watermakers Air 4 2026-07-25
WMA1533 Watermakers Air 4 2026-07-21
WMA9948 Watermakers Air 3 2026-06-15
WMA9726 - 3 2026-07-01
WMA875 - 3 2026-07-17
WMA792 - 3 2026-07-14
WMA517 - 3 2026-07-15
WMA516 - 3 2026-07-06

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 WMA2407 TZN → FXE Jul 26, 14:40 UTCJul 26, 15:10 UTC30m
2026-07-25 WMA26 FXE → SAQ Jul 25, 16:40 UTCJul 25, 17:10 UTC30m
2026-07-24 WMA635 SAQ → FXE Jul 24, 20:05 UTCJul 24, 20:40 UTC35m
2026-07-24 WMA634 FXE → SAQ Jul 24, 16:25 UTCJul 24, 17:00 UTC35m
2026-07-23 WMA9219 MHH → FXE Jul 23, 19:40 UTCJul 23, 20:10 UTC30m
2026-07-23 WMA9218 FXE → MHH Jul 23, 12:40 UTCJul 23, 13:00 UTC20m
2026-07-22 WMA1534 GHC → FXE Jul 22, 18:05 UTCJul 22, 18:35 UTC30m
2026-07-22 WMA412 - Jul 22, 14:05 UTCJul 22, 14:40 UTC35m
2026-07-21 WMA1534 GHC → FXE Jul 21, 18:05 UTCJul 21, 18:40 UTC35m
2026-07-21 WMA1533 FXE → GHC Jul 21, 14:40 UTCJul 21, 15:10 UTC30m
2026-07-20 WMA793 - Jul 20, 20:30 UTCJul 20, 20:55 UTC25m
2026-07-20 WMA675 - Jul 20, 16:55 UTCJul 20, 17:15 UTC20m
2026-07-20 WMA2407 - Jul 20, 14:30 UTCJul 20, 15:00 UTC30m
2026-07-20 WMA2404 FXE → TZN Jul 20, 10:40 UTCJul 20, 11:15 UTC35m
2026-07-19 WMA1534 - Jul 19, 20:25 UTCJul 19, 21:00 UTC35m
2026-07-19 WMA881 - Jul 19, 18:00 UTCJul 19, 18:40 UTC40m
2026-07-19 N821DD - Jul 19, 12:15 UTCJul 19, 12:40 UTC25m
2026-07-18 WMA26 FXE → SAQ Jul 18, 19:35 UTCJul 18, 20:10 UTC35m
2026-07-17 WMA954 - Jul 17, 20:44 UTCJul 17, 21:10 UTC25m
2026-07-17 WMA242 - Jul 17, 16:59 UTCJul 17, 17:25 UTC25m
2026-07-17 WMA2407 - Jul 17, 15:10 UTCJul 17, 15:40 UTC30m
2026-07-17 WMA875 - Jul 17, 11:15 UTCJul 17, 11:45 UTC30m
2026-07-15 WMA876 - Jul 15, 20:15 UTCJul 15, 20:50 UTC35m
2026-07-15 WMA875 - Jul 15, 16:35 UTCJul 15, 17:10 UTC35m
2026-07-15 WMA517 - Jul 15, 14:50 UTCJul 15, 15:25 UTC35m
2026-07-15 WMA2112 - Jul 15, 10:40 UTCJul 15, 11:15 UTC35m
2026-07-14 WMA126 - Jul 14, 20:55 UTCJul 14, 21:35 UTC40m
2026-07-14 WMA242 - Jul 14, 17:00 UTCJul 14, 17:30 UTC30m
2026-07-14 WMA1534 - Jul 14, 15:00 UTCJul 14, 15:30 UTC30m
2026-07-14 WMA792 - Jul 14, 11:05 UTCJul 14, 11:40 UTC35m
2026-07-13 WMA413 - Jul 13, 18:35 UTCJul 13, 19:10 UTC35m
2026-07-13 WMA412 - Jul 13, 14:05 UTCJul 13, 14:35 UTC30m
2026-07-12 WMA413 - Jul 12, 18:35 UTCJul 12, 19:05 UTC30m
2026-07-12 WMA412 FXE → TZN Jul 12, 14:20 UTCJul 12, 14:55 UTC35m
2026-07-11 WMA1534 - Jul 11, 20:00 UTCJul 11, 20:40 UTC40m
2026-07-11 WMA3225 - Jul 11, 16:40 UTCJul 11, 17:05 UTC25m
2026-07-11 WMA882 - Jul 11, 14:35 UTCJul 11, 15:10 UTC35m
2026-07-11 WMA675 - Jul 11, 10:50 UTCJul 11, 11:20 UTC30m
2026-07-10 WMA413 SML → FXE Jul 10, 17:35 UTCJul 10, 18:15 UTC40m
2026-07-10 WMA412 FXE → TZN Jul 10, 14:15 UTCJul 10, 14:50 UTC35m
2026-07-09 WMA517 - Jul 9, 20:30 UTCJul 9, 21:00 UTC30m
2026-07-09 WMA3225 FXE → ELH Jul 9, 16:45 UTCJul 9, 17:25 UTC40m
2026-07-09 WMA27 - Jul 9, 11:20 UTCJul 9, 12:30 UTC1h 10m
2026-07-08 WMA26 - Jul 8, 19:35 UTCJul 8, 20:10 UTC35m
2026-07-07 WMA126 - Jul 7, 20:35 UTCJul 7, 21:15 UTC40m
2026-07-07 WMA242 - Jul 7, 16:45 UTCJul 7, 17:20 UTC35m
2026-07-06 WMA676 - Jul 6, 21:25 UTCJul 6, 21:50 UTC25m
2026-07-06 WMA875 - Jul 6, 16:50 UTCJul 6, 17:25 UTC35m
2026-07-06 WMA635 - Jul 6, 14:00 UTCJul 6, 14:30 UTC30m
2026-07-06 WMA516 - Jul 6, 10:40 UTCJul 6, 11:05 UTC25m

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 N821DD page for operator, model, and routing details .

Mode-S AB34E1 frequently asked

What is Mode-S code AB34E1?
AB34E1 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N821DD.
Where is Mode-S AB34E1 registered?
Mode-S code AB34E1 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 AB34E1 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 15:10 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AB34E1, octal 52632341, decimal 11,220,193.
What flights does AB34E1 operate?
Mode-S AB34E1 has broadcast 20 distinct callsigns, including N821DD, WMA1534, WMA2407, WMA9219, WMA412.