Apparatus

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sensors Mode-S transponder

A29428

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N26514 · CESSNA 402 Businessliner · operated by HYANNIS AIR SERVICE INC

Hex
A29428
Octal
50512050
Decimal
10,654,760
Country
US
Tail
N26514
Type
C402
No current signal · last broadcast 4h ago
Flights observed
69
Distinct callsigns
20
Country
US
Last broadcast
4h ago

Last known position

Most recent position reported by Mode-S A29428.

Country allocation

The ICAO 24-bit address A29428 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
KAP87 Cape Air 11 2026-04-18
KAP635 Cape Air 10 2026-05-30
KAP65 Cape Air 6 2026-06-02
KAP2 Cape Air 6 2026-05-25
KAP252 Cape Air 4 2026-05-29
KAP13 Cape Air 4 2026-04-16
KAP91 Cape Air 3 2026-05-28
KAP6 Cape Air 3 2026-05-26
KAP1271 Cape Air 3 2026-05-02
KAP860 Cape Air 2 2026-05-10
KAP592 Cape Air 2 2026-05-25
KAP47 Cape Air 2 2026-05-17
KAP278 Cape Air 2 2026-05-16
KAP27 Cape Air 2 2026-05-18
KAP189 Cape Air 2 2026-05-03
KAP161 Cape Air 2 2026-04-28
KAP726 Cape Air 1 2026-05-11
KAP323 Cape Air 1 2026-05-18
KAP240 Cape Air 1 2026-04-23
KAP1903 Cape Air 1 2026-05-28

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-06-02 KAP65 BOS → MVY Jun 2, 22:05 UTCJun 2, 22:25 UTC20m
2026-06-02 KAP65 BOS → MVY Jun 2, 19:25 UTCJun 2, 19:45 UTC20m
2026-05-30 KAP635 STT → SJU May 30, 19:35 UTCMay 30, 19:55 UTC20m
2026-05-30 KAP635 STT → SJU May 30, 16:15 UTCMay 30, 16:35 UTC20m
2026-05-30 KAP635 STT → SJU May 30, 14:30 UTCMay 30, 14:50 UTC20m
2026-05-30 KAP635 STT → SJU May 30, 13:10 UTCMay 30, 13:20 UTC10m
2026-05-29 KAP252 SJU → VQS May 29, 20:00 UTCMay 29, 20:25 UTC25m
2026-05-29 KAP252 SJU → VQS May 29, 16:00 UTCMay 29, 16:15 UTC15m
2026-05-29 KAP252 SJU → VQS May 29, 15:10 UTCMay 29, 15:20 UTC10m
2026-05-28 KAP91 BOS → RKD May 28, 21:40 UTCMay 28, 21:55 UTC15m
2026-05-28 KAP91 BOS → RKD May 28, 20:20 UTCMay 28, 20:40 UTC20m
2026-05-28 KAP91 BOS → RKD May 28, 18:45 UTCMay 28, 19:00 UTC15m
2026-05-28 KAP1903 SJU → STT May 28, 17:15 UTCMay 28, 17:35 UTC20m
2026-05-26 KAP6 ACK → BOS May 26, 12:14 UTCMay 26, 12:30 UTC15m
2026-05-25 KAP592 AXA → SJU May 25, 20:55 UTCMay 25, 21:09 UTC15m
2026-05-25 KAP592 AXA → SJU May 25, 17:50 UTCMay 25, 18:05 UTC15m
2026-05-25 KAP2 MVY → BOS May 25, 16:05 UTCMay 25, 16:25 UTC20m
2026-05-22 KAP2 MVY → BOS May 22, 18:20 UTCMay 22, 18:30 UTC10m
2026-05-22 KAP2 MVY → BOS May 22, 16:30 UTCMay 22, 16:40 UTC10m
2026-05-18 KAP323 BOS → BHB May 18, 18:00 UTCMay 18, 18:20 UTC20m
2026-05-18 KAP27 MVY → BOS May 18, 16:05 UTCMay 18, 16:25 UTC20m
2026-05-18 KAP27 MVY → BOS May 18, 15:10 UTCMay 18, 15:30 UTC20m
2026-05-17 KAP47 STT → SJU May 17, 21:35 UTCMay 17, 21:50 UTC15m
2026-05-17 KAP47 STT → SJU May 17, 12:10 UTCMay 17, 12:30 UTC20m
2026-05-16 KAP278 VQS → SJU May 16, 18:50 UTCMay 16, 19:10 UTC20m
2026-05-11 KAP726 SJU → STT May 11, 12:45 UTCMay 11, 13:00 UTC15m
2026-05-10 KAP860 STT → SJU May 10, 22:30 UTCMay 10, 22:49 UTC20m
2026-05-10 KAP860 STT → SJU May 10, 21:40 UTCMay 10, 21:54 UTC15m
2026-05-03 KAP189 SJU → STT May 3, 20:45 UTCMay 3, 21:00 UTC15m
2026-05-03 KAP189 SJU → STT May 3, 19:25 UTCMay 3, 20:10 UTC45m
2026-05-02 KAP1271 HYA → ACK May 2, 19:45 UTCMay 2, 20:00 UTC15m
2026-05-02 KAP1271 HYA → ACK May 2, 18:15 UTCMay 2, 18:30 UTC15m
2026-05-01 KAP2 MVY → BOS May 1, 19:20 UTCMay 1, 19:35 UTC15m
2026-05-01 KAP2 MVY → BOS May 1, 17:55 UTCMay 1, 18:10 UTC15m
2026-05-01 KAP2 MVY → BOS May 1, 15:50 UTCMay 1, 16:50 UTC1h 0m
2026-04-29 KAP635 STT → SJU Apr 29, 16:55 UTCApr 29, 17:15 UTC20m
2026-04-29 KAP635 STT → SJU Apr 29, 15:25 UTCApr 29, 15:40 UTC15m
2026-04-29 KAP11 SJU → EIS Apr 29, 14:10 UTCApr 29, 14:25 UTC15m
2026-04-28 KAP161 VQS → SJU Apr 28, 23:00 UTCApr 28, 23:10 UTC10m
2026-04-28 KAP278 VQS → SJU Apr 28, 19:00 UTCApr 28, 21:05 UTC2h 5m
2026-04-28 KAP252 SJU → VQS Apr 28, 17:50 UTCApr 28, 18:20 UTC30m
2026-04-24 KAP1271 HYA → ACK Apr 24, 11:15 UTCApr 24, 11:30 UTC15m
2026-04-23 KAP240 BOS → HYA Apr 23, 20:15 UTCApr 23, 21:05 UTC50m
2026-04-22 KAP65 BOS → MVY Apr 22, 21:35 UTCApr 22, 21:50 UTC15m
2026-04-22 KAP65 BOS → MVY Apr 22, 20:35 UTCApr 22, 20:50 UTC15m
2026-04-22 KAP65 BOS → MVY Apr 22, 13:05 UTCApr 22, 13:25 UTC20m
2026-04-22 KAP65 BOS → MVY Apr 22, 12:15 UTCApr 22, 12:30 UTC15m
2026-04-21 KAP635 STT → SJU Apr 21, 21:45 UTCApr 21, 22:10 UTC25m
2026-04-21 KAP635 STT → SJU Apr 21, 20:25 UTCApr 21, 20:45 UTC20m
2026-04-21 KAP635 STT → SJU Apr 21, 17:25 UTCApr 21, 17:55 UTC30m

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 N26514 page for operator, model, and routing details .

Mode-S A29428 frequently asked

What is Mode-S code A29428?
A29428 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N26514.
Where is Mode-S A29428 registered?
Mode-S code A29428 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 A29428 broadcasting right now?
No active broadcast right now. Last signal was 4h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A29428, octal 50512050, decimal 10,654,760.
What flights does A29428 operate?
Mode-S A29428 has broadcast 20 distinct callsigns, including KAP87, KAP635, KAP65, KAP2, KAP252.