Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

A8B848

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N661DN · BOEING 757-200 · operated by BANK OF UTAH TRUSTEE

Hex
A8B848
Octal
52134110
Decimal
11,057,224
Country
US
Tail
N661DN
Type
B752
No current signal · last broadcast 8h ago
Flights observed
133
Distinct callsigns
20
Country
US
Last broadcast
8h ago

Last known position

Most recent position reported by Mode-S A8B848.

Country allocation

The ICAO 24-bit address A8B848 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
DAL8839 Delta Air Lines 9 2026-06-05
DAL8840 Delta Air Lines 8 2026-06-10
DAL8964 Delta Air Lines 7 2026-06-10
DAL8846 Delta Air Lines 7 2026-06-04
DAL8841 Delta Air Lines 7 2026-06-15
DAL8838 Delta Air Lines 7 2026-05-19
DAL8935 Delta Air Lines 6 2026-06-11
DAL8960 Delta Air Lines 5 2026-06-06
DAL8845 Delta Air Lines 5 2026-05-24
DAL8842 Delta Air Lines 5 2026-06-04
DAL8963 Delta Air Lines 4 2026-05-21
DAL8959 Delta Air Lines 4 2026-06-13
DAL8886 Delta Air Lines 4 2026-06-08
DAL8882 Delta Air Lines 4 2026-05-25
DAL8958 Delta Air Lines 3 2026-06-05
DAL8955 Delta Air Lines 3 2026-05-02
DAL8949 Delta Air Lines 3 2026-04-15
DAL8890 Delta Air Lines 3 2026-06-03
DAL8889 Delta Air Lines 3 2026-05-14
DAL8848 Delta Air Lines 3 2026-06-11

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 DAL9963 - Jul 14, 01:50 UTCJul 14, 02:15 UTC25m
2026-07-11 DAL8852 - Jul 11, 18:05 UTCJul 11, 20:00 UTC1h 55m
2026-07-11 DAL8852 QRO → ATL Jul 11, 16:42 UTCJul 11, 21:09 UTC4h 27m
2026-06-15 - - Jun 15, 21:50 UTCJun 16, 00:10 UTC2h 20m
2026-06-15 DAL8841 YYC → LAX Jun 15, 17:50 UTCJun 15, 19:45 UTC1h 55m
2026-06-14 DAL8884 CPS → CVG Jun 14, 23:39 UTCJun 15, 00:29 UTC50m
2026-06-13 DAL8959 ATL → IND Jun 13, 18:55 UTCJun 13, 20:40 UTC1h 45m
2026-06-12 DAL8850 JFK → SFO Jun 12, 00:35 UTCJun 12, 02:30 UTC1h 55m
2026-06-11 DAL8935 MEM → HPN Jun 11, 20:15 UTCJun 11, 23:35 UTC3h 20m
2026-06-11 DAL8935 MEM → HPN Jun 11, 20:13 UTCJun 11, 23:28 UTC3h 15m
2026-06-11 DAL8848 OKC → PDX Jun 11, 14:40 UTCJun 11, 16:15 UTC1h 35m
2026-06-11 DAL8848 OKC → PDX Jun 11, 14:38 UTCJun 11, 16:12 UTC1h 34m
2026-06-10 DAL8964 HHN → ATL Jun 10, 19:00 UTCJun 10, 19:30 UTC30m
2026-06-10 DAL8840 LAX → DAL Jun 10, 14:40 UTCJun 10, 16:45 UTC2h 5m
2026-06-08 DAL8886 SFO → PHX Jun 8, 00:40 UTCJun 8, 01:00 UTC20m
2026-06-07 DAL8886 SFO → PHX Jun 7, 22:50 UTCJun 8, 00:35 UTC1h 45m
2026-06-07 DAL8886 SFO → PHX Jun 7, 22:47 UTCJun 8, 00:43 UTC1h 56m
2026-06-07 DAL8840 LAX → DAL Jun 7, 16:25 UTCJun 7, 19:45 UTC3h 20m
2026-06-06 DAL8960 FRA → ATL Jun 6, 23:24 UTCJun 7, 00:34 UTC1h 10m
2026-06-05 DAL8958 SJC → IAD Jun 5, 17:25 UTCJun 5, 21:45 UTC4h 20m
2026-06-05 DAL8958 SJC → IAD Jun 5, 17:22 UTCJun 5, 21:42 UTC4h 20m
2026-06-05 DAL8839 MIA → PIE Jun 5, 12:55 UTCJun 5, 13:55 UTC1h 0m
2026-06-05 DAL8960 FRA → ATL Jun 5, 03:15 UTCJun 5, 04:15 UTC1h 0m
2026-06-05 DAL8960 FRA → ATL Jun 5, 03:12 UTCJun 5, 04:14 UTC1h 2m
2026-06-04 DAL8842 MSP → ATL Jun 4, 22:15 UTCJun 4, 23:20 UTC1h 5m
2026-06-04 DAL8842 MSP → ATL Jun 4, 22:13 UTCJun 4, 23:18 UTC1h 5m
2026-06-04 DAL8846 BKL → BED Jun 4, 00:20 UTCJun 4, 01:50 UTC1h 30m
2026-06-03 DAL8890 PHL → CPS Jun 3, 22:05 UTCJun 3, 22:45 UTC40m
2026-06-03 DAL8840 LAX → DAL Jun 3, 17:35 UTCJun 3, 20:10 UTC2h 35m
2026-06-02 DAL8964 HHN → ATL Jun 2, 17:05 UTCJun 2, 19:35 UTC2h 30m
2026-06-01 DAL8891 LAX → PHL Jun 1, 01:30 UTCJun 1, 02:30 UTC1h 0m
2026-05-30 DAL8839 MIA → PIE May 30, 21:00 UTCMay 30, 21:55 UTC55m
2026-05-30 DAL8839 MIA → PIE May 30, 20:57 UTCMay 30, 21:54 UTC57m
2026-05-30 DAL8964 HHN → ATL May 30, 16:40 UTCMay 30, 19:55 UTC3h 15m
2026-05-28 DAL8964 HHN → ATL May 28, 19:25 UTCMay 28, 20:25 UTC1h 0m
2026-05-28 DAL8841 YYC → LAX May 28, 13:20 UTCMay 28, 14:55 UTC1h 35m
2026-05-28 DAL8964 HHN → ATL May 28, 04:30 UTCMay 28, 05:25 UTC55m
2026-05-27 DAL8840 LAX → DAL May 27, 23:45 UTCMay 28, 00:25 UTC40m
2026-05-27 DAL8886 SFO → PHX May 27, 22:10 UTCMay 27, 22:55 UTC45m
2026-05-26 DAL8841 YYC → LAX May 26, 18:59 UTCMay 26, 20:00 UTC1h 0m
2026-05-26 DAL8841 YYC → LAX May 26, 18:58 UTCMay 26, 20:50 UTC1h 52m
2026-05-26 DAL8935 MEM → HPN May 26, 05:05 UTCMay 26, 05:59 UTC55m
2026-05-25 DAL8882 JFK → ATL May 25, 03:10 UTCMay 25, 03:50 UTC40m
2026-05-24 DAL8845 HPN → PHL May 24, 18:45 UTCMay 24, 19:15 UTC30m
2026-05-23 DAL8844 YYZ → DTW May 23, 00:35 UTCMay 23, 00:55 UTC20m
2026-05-22 DAL8841 YYC → LAX May 22, 14:50 UTCMay 22, 15:30 UTC40m
2026-05-21 DAL8882 JFK → ATL May 21, 20:20 UTCMay 21, 22:30 UTC2h 10m
2026-05-21 DAL8839 MIA → PIE May 21, 13:05 UTCMay 21, 14:55 UTC1h 50m
2026-05-21 DAL8963 SFO → PHX May 21, 04:00 UTCMay 21, 04:55 UTC55m
2026-05-21 DAL8963 SFO → PHX May 21, 03:59 UTCMay 21, 04:57 UTC58m

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 N661DN page for operator, model, and routing details .

Mode-S A8B848 frequently asked

What is Mode-S code A8B848?
A8B848 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N661DN.
Where is Mode-S A8B848 registered?
Mode-S code A8B848 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 A8B848 broadcasting right now?
No active broadcast right now. Last signal was 8h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A8B848, octal 52134110, decimal 11,057,224.
What flights does A8B848 operate?
Mode-S A8B848 has broadcast 20 distinct callsigns, including DAL8839, DAL8840, DAL8964, DAL8846, DAL8841.