Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

A0F4B5

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N1605 · BOEING 767-300 · operated by DELTA AIR LINES INC

Hex
A0F4B5
Octal
50172265
Decimal
10,548,405
Country
US
Tail
N1605
Type
B763
No current signal · last broadcast Jul 26, 20:20 UTC
Flights observed
324
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 20:20 UTC

Last known position

Most recent position reported by Mode-S A0F4B5.

Country allocation

The ICAO 24-bit address A0F4B5 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
DAL244 - 16 2026-07-07
DAL219 - 14 2026-07-17
DAL218 - 14 2026-07-16
DAL92 - 12 2026-06-27
DAL245 - 12 2026-07-08
DAL93 - 10 2026-06-28
DAL232 - 10 2026-06-29
DAL45 - 9 2026-07-12
DAL233 - 9 2026-06-30
DAL155 - 9 2026-07-11
DAL960 - 8 2026-06-26
DAL767 Delta Air Lines 8 2026-07-26
DAL668 Delta Air Lines 8 2026-07-06
DAL44 - 8 2026-07-10
DAL405 - 8 2026-07-14
DAL246 Delta Air Lines 8 2026-06-10
DAL154 - 8 2026-07-12
DAL679 - 7 2026-07-13
DAL425 Delta Air Lines 7 2026-07-25
DAL247 Delta Air Lines 7 2026-06-10

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 DAL767 LAX → AUS Jul 26, 15:20 UTCJul 26, 20:20 UTC5h 0m
2026-07-26 DAL915 BOS → MCO Jul 26, 07:22 UTCJul 26, 12:08 UTC4h 46m
2026-07-26 DAL915 BOS → MCO Jul 26, 07:25 UTCJul 26, 12:15 UTC4h 50m
2026-07-25 DAL463 LGA → DEN Jul 25, 23:40 UTCJul 26, 04:25 UTC4h 45m
2026-07-25 DAL463 LGA → DEN Jul 25, 23:40 UTCJul 26, 04:12 UTC4h 32m
2026-07-25 DAL425 BOS → LAX Jul 25, 20:40 UTCJul 25, 20:50 UTC10m
2026-07-25 DAL425 BOS → LAX Jul 25, 15:45 UTCJul 25, 16:15 UTC30m
2026-07-24 DAL463 LGA → DEN Jul 24, 23:30 UTCJul 25, 04:20 UTC4h 50m
2026-07-24 DAL425 BOS → LAX Jul 24, 20:40 UTCJul 24, 20:50 UTC10m
2026-07-24 DAL425 BOS → LAX Jul 24, 15:40 UTCJul 24, 16:05 UTC25m
2026-07-24 DAL425 BOS → LAX Jul 24, 15:36 UTCJul 24, 20:51 UTC5h 15m
2026-07-23 DAL427 JFK → SEA Jul 23, 23:00 UTCJul 24, 03:40 UTC4h 40m
2026-07-23 DAL180 HND → HNL Jul 23, 13:10 UTCJul 23, 20:30 UTC7h 20m
2026-07-23 DAL181 HNL → HND Jul 23, 02:50 UTCJul 23, 10:55 UTC8h 5m
2026-07-22 DAL307 DTW → HNL Jul 22, 14:39 UTCJul 22, 23:56 UTC9h 17m
2026-07-22 DAL307 - Jul 22, 14:40 UTCJul 23, 00:00 UTC9h 20m
2026-07-22 DAL310 LGA → ATL Jul 22, 02:30 UTCJul 22, 02:45 UTC15m
2026-07-22 DAL307 - Jul 22, 00:25 UTCJul 22, 00:40 UTC15m
2026-07-21 DAL307 - Jul 21, 15:15 UTCJul 21, 19:55 UTC4h 40m
2026-07-21 DAL310 LGA → ATL Jul 21, 00:55 UTCJul 21, 08:55 UTC8h 0m
2026-07-20 DAL480 LAX → HNL Jul 20, 16:05 UTCJul 20, 17:05 UTC1h 0m
2026-07-20 DAL480 LAX → HNL Jul 20, 16:03 UTCJul 20, 21:33 UTC5h 30m
2026-07-20 DAL427 JFK → SEA Jul 20, 00:45 UTCJul 20, 05:35 UTC4h 50m
2026-07-19 DAL180 - Jul 19, 15:30 UTCJul 19, 22:40 UTC7h 10m
2026-07-19 DAL181 - Jul 19, 05:00 UTCJul 19, 05:25 UTC25m
2026-07-19 DAL181 HNL → HND Jul 19, 04:57 UTCJul 19, 13:01 UTC8h 4m
2026-07-18 DAL480 LAX → HNL Jul 18, 21:55 UTCJul 19, 03:05 UTC5h 10m
2026-07-18 DAL773 DTW → PHX Jul 18, 14:55 UTCJul 18, 20:05 UTC5h 10m
2026-07-17 DAL219 CPH → JFK Jul 17, 07:14 UTCJul 17, 15:10 UTC7h 55m
2026-07-16 DAL218 JFK → CPH Jul 16, 21:45 UTCJul 17, 04:49 UTC7h 5m
2026-07-16 DAL149 - Jul 16, 08:50 UTCJul 16, 11:15 UTC2h 25m
2026-07-16 DAL149 MLA → JFK Jul 16, 08:50 UTCJul 16, 18:11 UTC9h 21m
2026-07-15 DAL148 JFK → MLA Jul 15, 22:10 UTCJul 16, 06:53 UTC8h 43m
2026-07-15 DAL148 - Jul 15, 22:10 UTCJul 15, 23:45 UTC1h 35m
2026-07-15 DAL285 - Jul 15, 12:15 UTCJul 15, 19:05 UTC6h 50m
2026-07-15 DAL285 SNN → JFK Jul 15, 12:12 UTCJul 15, 18:58 UTC6h 46m
2026-07-15 DAL284 - Jul 15, 04:10 UTCJul 15, 10:00 UTC5h 50m
2026-07-14 DAL405 SFO → JFK Jul 14, 14:15 UTCJul 14, 19:30 UTC5h 15m
2026-07-13 DAL679 - Jul 13, 19:35 UTCJul 14, 00:50 UTC5h 15m
2026-07-13 DAL205 ARN → JFK Jul 13, 08:55 UTCJul 13, 16:45 UTC7h 50m
2026-07-12 DAL204 JFK → ARN Jul 12, 22:27 UTCJul 13, 05:57 UTC7h 30m
2026-07-12 DAL204 - Jul 12, 22:30 UTCJul 13, 00:10 UTC1h 40m
2026-07-12 DAL45 DUB → JFK Jul 12, 12:40 UTCJul 12, 19:05 UTC6h 25m
2026-07-12 DAL154 - Jul 12, 04:01 UTCJul 12, 09:35 UTC5h 35m
2026-07-12 DAL154 BOS → DUB Jul 12, 03:58 UTCJul 12, 09:32 UTC5h 34m
2026-07-11 DAL155 - Jul 11, 14:30 UTCJul 11, 15:20 UTC50m
2026-07-11 DAL155 DUB → BOS Jul 11, 14:30 UTCJul 11, 21:05 UTC6h 35m
2026-07-11 DAL154 BOS → DUB Jul 11, 04:15 UTCJul 11, 09:40 UTC5h 25m
2026-07-10 DAL155 DUB → BOS Jul 10, 14:25 UTCJul 10, 21:00 UTC6h 35m
2026-07-10 DAL44 JFK → DUB Jul 10, 05:00 UTCJul 10, 10:45 UTC5h 45m

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 N1605 page for operator, model, and routing details .

Mode-S A0F4B5 frequently asked

What is Mode-S code A0F4B5?
A0F4B5 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N1605.
Where is Mode-S A0F4B5 registered?
Mode-S code A0F4B5 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 A0F4B5 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 20:20 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A0F4B5, octal 50172265, decimal 10,548,405.
What flights does A0F4B5 operate?
Mode-S A0F4B5 has broadcast 20 distinct callsigns, including DAL244, DAL219, DAL218, DAL92, DAL245.