Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

ACF5BE

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N934NN · BOEING 737-800 · operated by BANK OF UTAH TRUSTEE

Hex
ACF5BE
Octal
53172676
Decimal
11,335,102
Country
US
Tail
N934NN
Type
B738
No current signal · last broadcast Jul 26, 21:30 UTC
Flights observed
554
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 21:30 UTC

Last known position

Most recent position reported by Mode-S ACF5BE.

Country allocation

The ICAO 24-bit address ACF5BE 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
AAL928 American Airlines 5 2026-04-28
AAL846 - 5 2026-07-15
AAL2316 American Airlines 5 2026-04-17
AAL2307 - 5 2026-07-17
AAL2221 American Airlines 5 2026-05-05
AAL1955 - 5 2026-07-01
AAL411 American Airlines 4 2026-06-28
AAL2686 - 4 2026-07-07
AAL2626 American Airlines 4 2026-05-23
AAL2171 American Airlines 4 2026-05-02
AAL1858 - 4 2026-07-12
AAL1627 - 4 2026-06-21
AAL1572 American Airlines 4 2026-04-15
AAL1007 - 4 2026-04-13
AAL874 - 3 2026-07-09
AAL858 American Airlines 3 2026-05-19
AAL444 American Airlines 3 2026-06-13
AAL440 - 3 2026-07-12
AAL3237 American Airlines 3 2026-04-29
AAL3166 American Airlines 3 2026-04-17

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 AAL1915 RIC → DFW Jul 26, 20:15 UTCJul 26, 21:30 UTC1h 15m
2026-07-26 AAL1915 RIC → DFW Jul 26, 16:55 UTCJul 26, 18:55 UTC2h 0m
2026-07-26 AAL3008 ORD → LAX Jul 26, 12:20 UTCJul 26, 15:30 UTC3h 10m
2026-07-26 AAL866 PHX → ORD Jul 26, 00:50 UTCJul 26, 03:55 UTC3h 5m
2026-07-25 AAL1910 PDX → PHL Jul 25, 19:05 UTCJul 25, 22:25 UTC3h 20m
2026-07-25 AAL1910 PDX → PHL Jul 25, 19:04 UTCJul 25, 22:25 UTC3h 21m
2026-07-25 AAL1503 CUN → ORD Jul 25, 14:55 UTCJul 25, 18:00 UTC3h 5m
2026-07-25 AAL2040 PHL → SFO Jul 25, 08:25 UTCJul 25, 11:25 UTC3h 0m
2026-07-25 AAL1465 CLT → MSY Jul 25, 02:40 UTCJul 25, 05:50 UTC3h 10m
2026-07-24 AAL1717 ORD → YVR Jul 24, 21:35 UTCJul 25, 01:00 UTC3h 25m
2026-07-24 AAL1717 ORD → YVR Jul 24, 16:05 UTCJul 24, 20:20 UTC4h 15m
2026-07-24 AAL2163 MSY → MIA Jul 24, 11:55 UTCJul 24, 13:55 UTC2h 0m
2026-07-24 AAL1425 DFW → BDL Jul 24, 00:15 UTCJul 24, 03:25 UTC3h 10m
2026-07-23 AAL2413 PHL → IND Jul 23, 19:30 UTCJul 23, 22:10 UTC2h 40m
2026-07-23 AAL2413 PHL → IND Jul 23, 15:45 UTCJul 23, 18:10 UTC2h 25m
2026-07-23 AAL475 LAX → ORD Jul 23, 10:55 UTCJul 23, 14:05 UTC3h 10m
2026-07-22 AAL1409 FLL → CLT Jul 22, 21:40 UTCJul 23, 00:55 UTC3h 15m
2026-07-22 AAL1409 FLL → CLT Jul 22, 16:55 UTCJul 22, 20:15 UTC3h 20m
2026-07-22 AAL374 - Jul 22, 13:50 UTCJul 22, 15:10 UTC1h 20m
2026-07-22 AAL374 CLT → JFK Jul 22, 13:45 UTCJul 22, 15:05 UTC1h 20m
2026-07-22 AAL2632 EWR → ORD Jul 22, 11:10 UTCJul 22, 11:40 UTC30m
2026-07-21 AAL560 PHL → DEN Jul 21, 23:37 UTCJul 22, 01:44 UTC2h 7m
2026-07-21 AAL560 PHL → DEN Jul 21, 23:40 UTCJul 22, 01:50 UTC2h 10m
2026-07-21 AAL1492 PHL → DFW Jul 21, 19:30 UTCJul 21, 21:30 UTC2h 0m
2026-07-21 AAL1492 PHL → DFW Jul 21, 16:00 UTCJul 21, 18:10 UTC2h 10m
2026-07-21 AAL1515 BNA → DFW Jul 21, 13:10 UTCJul 21, 14:35 UTC1h 25m
2026-07-21 AAL1515 BNA → DFW Jul 21, 13:09 UTCJul 21, 14:39 UTC1h 30m
2026-07-21 AAL2833 - Jul 21, 00:35 UTCJul 21, 02:30 UTC1h 55m
2026-07-20 AAL505 MEX → MIA Jul 20, 20:25 UTCJul 20, 23:10 UTC2h 45m
2026-07-20 AAL2995 JFK → MEX Jul 20, 14:05 UTCJul 20, 18:20 UTC4h 15m
2026-07-19 AAL1161 - Jul 19, 19:05 UTCJul 19, 20:25 UTC1h 20m
2026-07-19 AAL1161 PUJ → JFK Jul 19, 16:41 UTCJul 19, 20:22 UTC3h 41m
2026-07-19 AAL1485 - Jul 19, 11:45 UTCJul 19, 12:35 UTC50m
2026-07-19 AAL1485 JFK → PUJ Jul 19, 11:42 UTCJul 19, 15:00 UTC3h 18m
2026-07-18 AAL1766 DFW → JFK Jul 18, 15:10 UTCJul 18, 18:30 UTC3h 20m
2026-07-18 AAL1553 - Jul 18, 11:15 UTCJul 18, 13:25 UTC2h 10m
2026-07-18 AAL2559 - Jul 18, 00:29 UTCJul 18, 02:45 UTC2h 15m
2026-07-18 AAL2559 DFW → CHS Jul 18, 00:28 UTCJul 18, 02:44 UTC2h 16m
2026-07-17 AAL1356 EWR → CLT Jul 17, 21:10 UTCJul 17, 23:00 UTC1h 50m
2026-07-17 AAL1356 EWR → CLT Jul 17, 17:44 UTCJul 17, 19:35 UTC1h 50m
2026-07-17 AAL999 ABQ → DFW Jul 17, 15:05 UTCJul 17, 16:24 UTC1h 20m
2026-07-17 AAL2564 DFW → ABQ Jul 17, 05:15 UTCJul 17, 06:40 UTC1h 25m
2026-07-17 AAL2307 - Jul 17, 01:00 UTCJul 17, 03:25 UTC2h 25m
2026-07-17 AAL2307 PIT → DFW Jul 17, 00:54 UTCJul 17, 03:25 UTC2h 31m
2026-07-16 AAL2307 - Jul 16, 21:35 UTCJul 16, 23:49 UTC2h 15m
2026-07-16 AAL2307 DFW → DFW Jul 16, 20:35 UTCJul 16, 20:45 UTC10m
2026-07-16 AAL2307 DFW → DFW Jul 16, 20:09 UTCJul 16, 20:15 UTC5m
2026-07-16 AAL2049 JFK → DFW Jul 16, 15:35 UTCJul 16, 18:40 UTC3h 5m
2026-07-16 AAL2049 JFK → DFW Jul 16, 15:34 UTCJul 16, 18:35 UTC3h 1m
2026-07-16 AAL1029 - Jul 16, 12:25 UTCJul 16, 13:30 UTC1h 5m

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 N934NN page for operator, model, and routing details .

Mode-S ACF5BE frequently asked

What is Mode-S code ACF5BE?
ACF5BE is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N934NN.
Where is Mode-S ACF5BE registered?
Mode-S code ACF5BE 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 ACF5BE broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 21:30 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex ACF5BE, octal 53172676, decimal 11,335,102.
What flights does ACF5BE operate?
Mode-S ACF5BE has broadcast 20 distinct callsigns, including AAL928, AAL846, AAL2316, AAL2307, AAL2221.