Apparatus

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sensors Mode-S transponder

A74E8F

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N570BN · operated by HYANNIS AIR SERVICE INC

Hex
A74E8F
Octal
51647217
Decimal
10,964,623
Country
US
Tail
N570BN
Type
BN2P
No current signal · last broadcast Jul 26, 21:05 UTC
Flights observed
386
Distinct callsigns
12
Country
US
Last broadcast
Jul 26, 21:05 UTC

Last known position

Most recent position reported by Mode-S A74E8F.

Country allocation

The ICAO 24-bit address A74E8F 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 12 distinct

Callsign Airline Flights Last seen
KAP48B Cape Air 134 2026-07-02
KAP13B - 108 2026-07-04
KAP223B Cape Air 43 2026-07-26
KAP429B Cape Air 32 2026-07-13
KAP592B Cape Air 19 2026-06-03
KP48B - 14 2026-05-15
KAP252B - 13 2026-07-22
KAP189B Cape Air 8 2026-07-06
KAP62B - 5 2026-07-18
KAP30B - 5 2026-07-04
KAP34B - 4 2026-07-05
KAP605B - 1 2026-06-09

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 KAP223B CPX → SJU Jul 26, 20:50 UTCJul 26, 21:05 UTC15m
2026-07-26 KAP223B CPX → SJU Jul 26, 19:10 UTCJul 26, 19:30 UTC20m
2026-07-26 KAP223B CPX → SJU Jul 26, 17:10 UTCJul 26, 17:30 UTC20m
2026-07-26 KAP223B CPX → SJU Jul 26, 14:50 UTCJul 26, 15:05 UTC15m
2026-07-25 KAP223B CPX → SJU Jul 25, 20:45 UTCJul 25, 21:10 UTC25m
2026-07-25 KAP223B CPX → SJU Jul 25, 19:05 UTCJul 25, 19:20 UTC15m
2026-07-25 KAP223B CPX → SJU Jul 25, 17:25 UTCJul 25, 17:50 UTC25m
2026-07-25 KAP223B CPX → SJU Jul 25, 14:55 UTCJul 25, 15:10 UTC15m
2026-07-24 KAP223B CPX → SJU Jul 24, 20:35 UTCJul 24, 21:00 UTC25m
2026-07-24 KAP223B CPX → SJU Jul 24, 19:25 UTCJul 24, 19:40 UTC15m
2026-07-24 KAP223B CPX → SJU Jul 24, 17:15 UTCJul 24, 17:45 UTC30m
2026-07-24 KAP223B CPX → SJU Jul 24, 14:50 UTCJul 24, 15:00 UTC10m
2026-07-23 KAP223B CPX → SJU Jul 23, 20:50 UTCJul 23, 21:10 UTC20m
2026-07-23 KAP223B CPX → SJU Jul 23, 19:00 UTCJul 23, 19:20 UTC20m
2026-07-23 KAP223B CPX → SJU Jul 23, 17:15 UTCJul 23, 17:40 UTC25m
2026-07-23 KAP223B CPX → SJU Jul 23, 13:35 UTCJul 23, 13:50 UTC15m
2026-07-22 KAP252B - Jul 22, 20:50 UTCJul 22, 21:15 UTC25m
2026-07-22 KAP252B - Jul 22, 19:20 UTCJul 22, 19:40 UTC20m
2026-07-22 KAP252B - Jul 22, 18:25 UTCJul 22, 18:40 UTC15m
2026-07-22 KAP252B - Jul 22, 17:25 UTCJul 22, 17:45 UTC20m
2026-07-22 KAP252B - Jul 22, 16:20 UTCJul 22, 16:35 UTC15m
2026-07-22 KAP252B - Jul 22, 15:05 UTCJul 22, 15:25 UTC20m
2026-07-20 KAP223B CPX → SJU Jul 20, 21:45 UTCJul 20, 22:35 UTC50m
2026-07-20 KAP223B CPX → SJU Jul 20, 20:45 UTCJul 20, 21:00 UTC15m
2026-07-20 KAP223B CPX → SJU Jul 20, 19:00 UTCJul 20, 19:15 UTC15m
2026-07-20 KAP223B CPX → SJU Jul 20, 18:15 UTCJul 20, 18:25 UTC10m
2026-07-20 KAP223B CPX → SJU Jul 20, 17:05 UTCJul 20, 17:20 UTC15m
2026-07-18 KAP223B CPX → SJU Jul 18, 20:40 UTCJul 18, 21:05 UTC25m
2026-07-18 KAP223B CPX → SJU Jul 18, 18:55 UTCJul 18, 19:10 UTC15m
2026-07-18 KAP223B CPX → SJU Jul 18, 17:15 UTCJul 18, 17:45 UTC30m
2026-07-18 KAP223B CPX → SJU Jul 18, 15:50 UTCJul 18, 16:05 UTC15m
2026-07-18 KAP223B CPX → SJU Jul 18, 15:00 UTCJul 18, 15:15 UTC15m
2026-07-18 KAP62B - Jul 18, 11:20 UTCJul 18, 12:00 UTC40m
2026-07-17 KAP252B - Jul 17, 15:40 UTCJul 17, 18:29 UTC2h 50m
2026-07-17 KAP223B CPX → SJU Jul 17, 14:30 UTCJul 17, 14:50 UTC20m
2026-07-13 KAP429B SJU → CPX Jul 13, 21:05 UTCJul 13, 21:15 UTC10m
2026-07-13 KAP429B SJU → CPX Jul 13, 16:30 UTCJul 13, 16:45 UTC15m
2026-07-13 KAP429B SJU → CPX Jul 13, 14:55 UTCJul 13, 15:10 UTC15m
2026-07-12 KAP429B SJU → CPX Jul 12, 20:20 UTCJul 12, 20:40 UTC20m
2026-07-12 KAP429B SJU → CPX Jul 12, 18:45 UTCJul 12, 19:01 UTC15m
2026-07-12 KAP429B SJU → CPX Jul 12, 17:20 UTCJul 12, 17:40 UTC20m
2026-07-12 KAP429B SJU → CPX Jul 12, 14:50 UTCJul 12, 15:10 UTC20m
2026-07-11 KAP429B SJU → CPX Jul 11, 20:20 UTCJul 11, 20:40 UTC20m
2026-07-11 KAP429B SJU → CPX Jul 11, 18:55 UTCJul 11, 19:15 UTC20m
2026-07-11 KAP429B SJU → CPX Jul 11, 17:25 UTCJul 11, 17:45 UTC20m
2026-07-11 KAP429B SJU → CPX Jul 11, 16:00 UTCJul 11, 16:15 UTC15m
2026-07-11 KAP429B SJU → CPX Jul 11, 14:40 UTCJul 11, 14:55 UTC15m
2026-07-11 KAP429B SJU → CPX Jul 11, 13:40 UTCJul 11, 13:55 UTC15m
2026-07-10 KAP429B SJU → CPX Jul 10, 21:05 UTCJul 10, 21:25 UTC20m
2026-07-10 KAP429B SJU → CPX Jul 10, 19:20 UTCJul 10, 19:35 UTC15m

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 N570BN page for operator, model, and routing details .

Mode-S A74E8F frequently asked

What is Mode-S code A74E8F?
A74E8F is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N570BN.
Where is Mode-S A74E8F registered?
Mode-S code A74E8F 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 A74E8F broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 21:05 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A74E8F, octal 51647217, decimal 10,964,623.
What flights does A74E8F operate?
Mode-S A74E8F has broadcast 12 distinct callsigns, including KAP48B, KAP13B, KAP223B, KAP429B, KAP592B.