Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

AE74B3

ICAO 24-bit transponder address

Currently assigned to 22-21231 · Sikorsky HH-60M Black Hawk

Hex
AE74B3
Octal
53472263
Decimal
11,433,139
Tail
22-21231
Type
H60
No current signal · last broadcast Jul 24, 03:40 UTC
Flights observed
48
Distinct callsigns
8
Country
-
Last broadcast
Jul 24, 03:40 UTC

Last known position

Most recent position reported by Mode-S AE74B3.

Callsign history 8 distinct

Callsign Airline Flights Last seen
R21231 - 20 2026-07-22
LICHEN8 - 10 2026-06-09
LICHEN9 - 7 2026-07-09
LICHEN5 - 4 2026-05-15
LICHEN4 - 2 2026-07-24
LICHEN2 - 2 2026-06-01
BOREAL9 - 2 2026-07-10
2121231 - 1 2026-05-29

Recent flights last 48

DateFlightRouteTakeoffLandingDuration
2026-07-24 LICHEN4 - Jul 24, 01:30 UTCJul 24, 02:05 UTC35m
2026-07-24 LICHEN4 - Jul 24, 01:15 UTCJul 24, 01:25 UTC10m
2026-07-22 R21231 FBK → FBK Jul 22, 22:10 UTCJul 22, 23:45 UTC1h 35m
2026-07-22 R21231 FBK → FBK Jul 22, 20:15 UTCJul 22, 21:40 UTC1h 25m
2026-07-17 R21231 FBK → FBK Jul 17, 00:25 UTCJul 17, 00:30 UTC5m
2026-07-16 R21231 FBK → FBK Jul 16, 23:29 UTCJul 17, 00:14 UTC45m
2026-07-16 R21231 - Jul 16, 22:35 UTCJul 16, 23:25 UTC50m
2026-07-16 R21231 FBK → FBK Jul 16, 20:49 UTCJul 16, 21:55 UTC1h 5m
2026-07-16 R21231 FBK → FBK Jul 16, 20:19 UTCJul 16, 20:45 UTC25m
2026-07-16 R21231 FBK → FBK Jul 16, 01:25 UTCJul 16, 04:45 UTC3h 20m
2026-07-16 R21231 FBK → FBK Jul 16, 00:00 UTCJul 16, 00:05 UTC5m
2026-07-15 R21231 FBK → FBK Jul 15, 23:25 UTCJul 15, 23:50 UTC25m
2026-07-15 R21231 FBK → FBK Jul 15, 23:05 UTCJul 15, 23:20 UTC15m
2026-07-15 R21231 - Jul 15, 22:35 UTCJul 15, 23:00 UTC25m
2026-07-15 R21231 FBK → FBK Jul 15, 20:05 UTCJul 15, 21:45 UTC1h 40m
2026-07-15 R21231 FBK → FBK Jul 15, 19:45 UTCJul 15, 20:00 UTC15m
2026-07-10 BOREAL9 - Jul 10, 19:40 UTCJul 10, 20:20 UTC40m
2026-07-10 BOREAL9 - Jul 10, 16:20 UTCJul 10, 17:05 UTC45m
2026-07-09 LICHEN9 - Jul 9, 21:45 UTCJul 9, 22:30 UTC45m
2026-07-07 LICHEN9 - Jul 7, 20:50 UTCJul 7, 21:35 UTC45m
2026-07-01 LICHEN9 - Jul 1, 01:55 UTCJul 1, 02:35 UTC40m
2026-06-30 LICHEN9 - Jun 30, 21:20 UTCJun 30, 22:00 UTC40m
2026-06-23 LICHEN9 FBK → FBK Jun 23, 23:44 UTCJun 23, 23:50 UTC5m
2026-06-23 LICHEN9 - Jun 23, 21:54 UTCJun 23, 23:34 UTC1h 40m
2026-06-23 LICHEN9 FBK → FBK Jun 23, 21:39 UTCJun 23, 21:45 UTC5m
2026-06-16 R21231 - Jun 16, 07:50 UTCJun 16, 09:10 UTC1h 20m
2026-06-16 R21231 FBK → FBK Jun 16, 07:30 UTCJun 16, 07:34 UTC5m
2026-06-09 LICHEN8 - Jun 9, 00:10 UTCJun 9, 00:40 UTC30m
2026-06-08 LICHEN8 FBK → FBK Jun 8, 23:45 UTCJun 9, 00:00 UTC15m
2026-06-08 LICHEN8 FBK → FBK Jun 8, 23:15 UTCJun 8, 23:30 UTC15m
2026-06-03 LICHEN8 FBK → FBK Jun 3, 00:35 UTCJun 3, 01:45 UTC1h 10m
2026-06-03 LICHEN8 - Jun 3, 00:00 UTCJun 3, 00:30 UTC30m
2026-06-02 LICHEN8 FBK → FBK Jun 2, 23:40 UTCJun 2, 23:45 UTC5m
2026-06-02 LICHEN8 FBK → FBK Jun 2, 22:10 UTCJun 2, 23:35 UTC1h 25m
2026-06-02 LICHEN8 FBK → FBK Jun 2, 21:55 UTCJun 2, 22:00 UTC5m
2026-06-02 LICHEN8 - Jun 2, 21:15 UTCJun 2, 21:50 UTC35m
2026-06-02 LICHEN8 FBK → FBK Jun 2, 21:05 UTCJun 2, 21:10 UTC5m
2026-06-01 LICHEN2 FBK → FBK Jun 1, 22:10 UTCJun 1, 23:25 UTC1h 15m
2026-06-01 LICHEN2 FBK → FBK Jun 1, 20:00 UTCJun 1, 21:55 UTC1h 55m
2026-05-29 2121231 FBK → FBK May 29, 19:45 UTCMay 29, 20:15 UTC30m
2026-05-15 LICHEN5 FBK → FBK May 15, 22:20 UTCMay 15, 22:25 UTC5m
2026-05-15 LICHEN5 - May 15, 21:25 UTCMay 15, 22:15 UTC50m
2026-05-15 LICHEN5 - May 15, 16:50 UTCMay 15, 17:35 UTC45m
2026-05-15 LICHEN5 FBK → FBK May 15, 16:30 UTCMay 15, 16:40 UTC10m
2026-04-23 R21231 - Apr 23, 20:35 UTCApr 23, 21:15 UTC40m
2026-04-22 R21231 FBK → FBK Apr 22, 23:00 UTCApr 23, 00:50 UTC1h 50m
2026-04-22 R21231 FBK → FBK Apr 22, 00:40 UTCApr 22, 00:55 UTC15m
2026-04-22 R21231 FBK → FBK Apr 22, 00:25 UTCApr 22, 00:35 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 22-21231 page for operator, model, and routing details .

Mode-S AE74B3 frequently asked

What is Mode-S code AE74B3?
AE74B3 is an ICAO 24-bit transponder address. Assigned to 22-21231.
Is AE74B3 broadcasting right now?
No active broadcast right now. Last signal was Jul 24, 03:40 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AE74B3, octal 53472263, decimal 11,433,139.
What flights does AE74B3 operate?
Mode-S AE74B3 has broadcast 8 distinct callsigns, including R21231, LICHEN8, LICHEN9, LICHEN5, LICHEN4.