Apparatus

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sensors Mode-S transponder

AE74BA

ICAO 24-bit transponder address

Currently assigned to 22-21238 · Sikorsky HH-60M Black Hawk

Hex
AE74BA
Octal
53472272
Decimal
11,433,146
Tail
22-21238
Type
H60
No current signal · last broadcast 2d ago
Flights observed
13
Distinct callsigns
2
Country
-
Last broadcast
2d ago

Last known position

Most recent position reported by Mode-S AE74BA.

Callsign history 2 distinct

Callsign Airline Flights Last seen
SKED75 - 11 2026-04-16
SKED12 - 2 2026-04-14

Recent flights last 13

DateFlightRouteTakeoffLandingDuration
2026-04-16 SKED75 - Apr 16, 14:10 UTCApr 16, 15:10 UTC1h 0m
2026-04-15 SKED75 - Apr 15, 19:10 UTCApr 15, 20:05 UTC55m
2026-04-15 SKED75 - Apr 15, 17:05 UTCApr 15, 17:35 UTC30m
2026-04-15 SKED75 - Apr 15, 15:05 UTCApr 15, 15:15 UTC10m
2026-04-15 SKED75 - Apr 15, 14:25 UTCApr 15, 14:55 UTC29m
2026-04-15 SKED75 - Apr 15, 13:01 UTCApr 15, 13:35 UTC35m
2026-04-15 SKED75 - Apr 15, 12:35 UTCApr 15, 12:55 UTC20m
2026-04-14 SKED75 - Apr 14, 20:55 UTCApr 14, 21:05 UTC10m
2026-04-14 SKED75 - Apr 14, 19:55 UTCApr 14, 20:50 UTC55m
2026-04-14 SKED75 - Apr 14, 18:35 UTCApr 14, 18:45 UTC10m
2026-04-14 SKED75 - Apr 14, 17:20 UTCApr 14, 17:35 UTC15m
2026-04-14 SKED12 - Apr 14, 14:50 UTCApr 14, 15:45 UTC55m
2026-04-14 SKED12 - Apr 14, 14:05 UTCApr 14, 14:45 UTC40m

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 22-21238 page for operator, model, and routing details .

Mode-S AE74BA frequently asked

What is Mode-S code AE74BA?
AE74BA is an ICAO 24-bit transponder address. Assigned to 22-21238.
Is AE74BA broadcasting right now?
No active broadcast right now. Last signal was 2d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AE74BA, octal 53472272, decimal 11,433,146.
What flights does AE74BA operate?
Mode-S AE74BA has broadcast 2 distinct callsigns, including SKED75, SKED12.