Apparatus

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sensors Mode-S transponder

AE4FED

ICAO 24-bit transponder address

Currently assigned to 168157 · SIKORSKY UH-60 Black Hawk

Hex
AE4FED
Octal
53447755
Decimal
11,423,725
Tail
168157
Type
H60
No current signal · last broadcast 2d ago
Flights observed
21
Distinct callsigns
2
Country
-
Last broadcast
2d ago

Last known position

Most recent position reported by Mode-S AE4FED.

Callsign history 2 distinct

Callsign Airline Flights Last seen
RS48 - 20 2026-06-17
FFAB123 - 1 2026-06-12

Recent flights last 21

DateFlightRouteTakeoffLandingDuration
2026-06-17 RS48 - Jun 17, 02:55 UTCJun 17, 04:50 UTC1h 55m
2026-06-17 RS48 NZY → NZY Jun 17, 02:10 UTCJun 17, 02:15 UTC5m
2026-06-16 RS48 NZY → NZY Jun 16, 23:40 UTCJun 17, 02:05 UTC2h 25m
2026-06-16 RS48 - Jun 16, 21:55 UTCJun 16, 23:00 UTC1h 5m
2026-06-16 RS48 - Jun 16, 20:20 UTCJun 16, 21:15 UTC55m
2026-06-16 RS48 - Jun 16, 17:10 UTCJun 16, 19:35 UTC2h 25m
2026-06-12 FFAB123 NZY → NZY Jun 12, 16:55 UTCJun 12, 17:10 UTC15m
2026-06-11 RS48 - Jun 11, 01:05 UTCJun 11, 02:30 UTC1h 25m
2026-06-10 RS48 - Jun 10, 20:35 UTCJun 10, 22:55 UTC2h 20m
2026-06-10 RS48 - Jun 10, 18:40 UTCJun 10, 19:40 UTC1h 0m
2026-06-10 RS48 - Jun 10, 17:10 UTCJun 10, 17:35 UTC25m
2026-06-09 RS48 NZY → NZY Jun 9, 20:35 UTCJun 9, 20:45 UTC10m
2026-06-05 RS48 NZY → NZY Jun 5, 02:45 UTCJun 5, 04:45 UTC2h 0m
2026-06-05 RS48 - Jun 5, 01:15 UTCJun 5, 02:10 UTC55m
2026-06-05 RS48 - Jun 5, 00:05 UTCJun 5, 00:25 UTC20m
2026-06-04 RS48 - Jun 4, 22:05 UTCJun 4, 23:30 UTC1h 25m
2026-06-03 RS48 NZY → NZY Jun 3, 23:40 UTCJun 4, 01:05 UTC1h 25m
2026-06-03 RS48 NZY → NZY Jun 3, 19:00 UTCJun 3, 20:05 UTC1h 5m
2026-06-03 RS48 NZY → NZY Jun 3, 01:10 UTCJun 3, 02:40 UTC1h 30m
2026-06-02 RS48 - Jun 2, 17:20 UTCJun 2, 17:45 UTC25m
2026-06-02 RS48 NZY → NZY Jun 2, 17:00 UTCJun 2, 17:10 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 168157 page for operator, model, and routing details .

Mode-S AE4FED frequently asked

What is Mode-S code AE4FED?
AE4FED is an ICAO 24-bit transponder address. Assigned to 168157.
Is AE4FED 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 AE4FED, octal 53447755, decimal 11,423,725.
What flights does AE4FED operate?
Mode-S AE4FED has broadcast 2 distinct callsigns, including RS48, FFAB123.