Apparatus

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sensors Mode-S transponder

AA29D4

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N754KP · CESSNA 208 Caravan · operated by KALININ PARTNERS LLC

Hex
AA29D4
Octal
52424724
Decimal
11,151,828
Country
US
Tail
N754KP
Type
C208
No current signal · last broadcast 3d ago
Flights observed
163
Distinct callsigns
20
Country
US
Last broadcast
3d ago

Last known position

Most recent position reported by Mode-S AA29D4.

Country allocation

The ICAO 24-bit address AA29D4 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
EXP401 Business Express Delivery 31 2026-07-25
EXP403 Business Express Delivery 26 2026-07-26
EXP405 Business Express Delivery 22 2026-07-24
EXP626 Business Express Delivery 11 2026-05-08
EXP624 Business Express Delivery 9 2026-06-01
EXP623 Business Express Delivery 8 2026-06-01
N754KP - 7 2026-07-22
EXP625 Business Express Delivery 7 2026-05-08
EXP404 Business Express Delivery 7 2026-07-21
EXP402 Business Express Delivery 7 2026-07-19
EXP406 Business Express Delivery 6 2026-07-20
EXP400 Business Express Delivery 5 2026-07-24
EXP6231 Business Express Delivery 4 2026-06-01
EXP407 - 3 2026-07-07
EXP800 Business Express Delivery 2 2026-07-20
EXP6241 Business Express Delivery 2 2026-05-23
EXP426 - 2 2026-05-04
EXP4000 Business Express Delivery 2 2026-05-13
EXP754 - 1 2026-06-15
EXP4011 - 1 2026-06-15

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 EXP403 KTN → KLW Jul 26, 21:00 UTCJul 26, 21:10 UTC10m
2026-07-25 EXP401 KTN → KLW Jul 25, 17:05 UTCJul 25, 17:20 UTC15m
2026-07-24 EXP400 KLW → KTN Jul 24, 14:55 UTCJul 24, 15:05 UTC10m
2026-07-24 EXP405 KTN → KLW Jul 24, 00:10 UTCJul 24, 00:25 UTC15m
2026-07-22 EXP405 KTN → KLW Jul 22, 23:55 UTCJul 23, 00:05 UTC10m
2026-07-22 EXP401 KTN → KLW Jul 22, 17:45 UTCJul 22, 18:25 UTC40m
2026-07-22 N754KP - Jul 22, 16:50 UTCJul 22, 17:00 UTC10m
2026-07-21 EXP404 KLW → KTN Jul 21, 22:05 UTCJul 21, 22:15 UTC10m
2026-07-21 EXP403 KTN → KLW Jul 21, 20:40 UTCJul 21, 20:50 UTC10m
2026-07-21 EXP401 KTN → KLW Jul 21, 17:20 UTCJul 21, 17:30 UTC10m
2026-07-20 EXP800 SIT → KLW Jul 20, 22:10 UTCJul 20, 23:45 UTC1h 35m
2026-07-20 EXP800 SIT → KLW Jul 20, 19:50 UTCJul 20, 20:50 UTC1h 0m
2026-07-20 EXP406 AKW → KTN Jul 20, 01:15 UTCJul 20, 01:25 UTC10m
2026-07-19 EXP404 KLW → KTN Jul 19, 22:20 UTCJul 19, 22:30 UTC10m
2026-07-19 EXP402 KLW → KTN Jul 19, 18:15 UTCJul 19, 18:25 UTC10m
2026-07-18 EXP401 KTN → KLW Jul 18, 17:35 UTCJul 18, 17:50 UTC15m
2026-07-18 N754KP - Jul 18, 15:35 UTCJul 18, 16:35 UTC1h 0m
2026-07-17 EXP402 - Jul 17, 18:10 UTCJul 17, 18:19 UTC10m
2026-07-16 EXP403 - Jul 16, 21:25 UTCJul 16, 21:35 UTC10m
2026-07-16 EXP401 - Jul 16, 16:09 UTCJul 16, 16:25 UTC15m
2026-07-15 EXP401 - Jul 15, 16:45 UTCJul 15, 17:00 UTC15m
2026-07-15 EXP405 - Jul 15, 01:00 UTCJul 15, 01:35 UTC35m
2026-07-14 EXP403 - Jul 14, 22:20 UTCJul 14, 22:30 UTC10m
2026-07-14 EXP405 - Jul 14, 00:40 UTCJul 14, 00:50 UTC10m
2026-07-13 EXP403 - Jul 13, 22:20 UTCJul 13, 22:30 UTC10m
2026-07-13 EXP405 HYL → KLW Jul 13, 00:10 UTCJul 13, 00:20 UTC10m
2026-07-10 N754KP - Jul 10, 22:05 UTCJul 10, 22:35 UTC30m
2026-07-10 EXP401 - Jul 10, 17:45 UTCJul 10, 18:00 UTC15m
2026-07-09 EXP401 - Jul 9, 17:35 UTCJul 9, 17:45 UTC10m
2026-07-08 EXP405 - Jul 8, 21:45 UTCJul 8, 22:00 UTC15m
2026-07-08 EXP403 - Jul 8, 20:15 UTCJul 8, 20:30 UTC15m
2026-07-07 EXP407 - Jul 7, 02:20 UTCJul 7, 02:30 UTC10m
2026-07-07 EXP405 - Jul 7, 00:15 UTCJul 7, 00:25 UTC10m
2026-07-04 EXP402 - Jul 4, 18:45 UTCJul 4, 18:55 UTC10m
2026-07-04 EXP401 - Jul 4, 17:55 UTCJul 4, 18:05 UTC10m
2026-07-04 EXP407 - Jul 4, 02:45 UTCJul 4, 02:55 UTC10m
2026-07-04 EXP405 - Jul 4, 01:10 UTCJul 4, 02:00 UTC50m
2026-07-03 EXP403 - Jul 3, 21:40 UTCJul 3, 22:10 UTC30m
2026-07-03 EXP401 - Jul 3, 16:50 UTCJul 3, 17:00 UTC10m
2026-06-29 EXP402 - Jun 29, 18:44 UTCJun 29, 19:09 UTC25m
2026-06-27 EXP401 - Jun 27, 17:29 UTCJun 27, 17:39 UTC10m
2026-06-25 EXP403 - Jun 25, 21:10 UTCJun 25, 21:20 UTC10m
2026-06-25 EXP402 - Jun 25, 18:29 UTCJun 25, 18:39 UTC10m
2026-06-23 EXP401 - Jun 23, 16:35 UTCJun 23, 16:44 UTC10m
2026-06-22 EXP400 - Jun 22, 15:14 UTCJun 22, 15:24 UTC10m
2026-06-22 EXP405 - Jun 22, 00:50 UTCJun 22, 01:00 UTC10m
2026-06-20 EXP402 KLW → KTN Jun 20, 18:24 UTCJun 20, 18:34 UTC10m
2026-06-20 EXP406 AKW → KTN Jun 20, 00:49 UTCJun 20, 00:59 UTC10m
2026-06-19 EXP405 - Jun 19, 23:59 UTCJun 20, 00:09 UTC10m
2026-06-19 EXP403 - Jun 19, 21:04 UTCJun 19, 21:14 UTC10m

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 N754KP page for operator, model, and routing details .

Mode-S AA29D4 frequently asked

What is Mode-S code AA29D4?
AA29D4 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N754KP.
Where is Mode-S AA29D4 registered?
Mode-S code AA29D4 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 AA29D4 broadcasting right now?
No active broadcast right now. Last signal was 3d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AA29D4, octal 52424724, decimal 11,151,828.
What flights does AA29D4 operate?
Mode-S AA29D4 has broadcast 20 distinct callsigns, including EXP401, EXP403, EXP405, EXP626, EXP624.