Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

A70BD1

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N553NW · BOEING 757-200 · operated by DELTA AIR LINES INC

Hex
A70BD1
Octal
51605721
Decimal
10,947,537
Country
US
Tail
N553NW
Type
B752
No current signal · last broadcast Jul 26, 22:15 UTC
Flights observed
483
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 22:15 UTC

Last known position

Most recent position reported by Mode-S A70BD1.

Country allocation

The ICAO 24-bit address A70BD1 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
DAL2238 Delta Air Lines 13 2026-07-22
DAL2076 Delta Air Lines 10 2026-06-02
DAL1756 Delta Air Lines 10 2026-07-18
DAL913 Delta Air Lines 9 2026-06-01
DAL1937 Delta Air Lines 9 2026-07-18
DAL1070 Delta Air Lines 9 2026-06-01
DAL2263 Delta Air Lines 8 2026-07-22
DAL802 Delta Air Lines 7 2026-05-31
DAL497 Delta Air Lines 7 2026-06-23
DAL523 Delta Air Lines 6 2026-05-31
DAL2614 - 6 2026-06-23
DAL2262 Delta Air Lines 6 2026-07-23
DAL1332 Delta Air Lines 6 2026-04-25
DAL1234 Delta Air Lines 6 2026-05-05
DAL602 - 5 2026-07-17
DAL492 - 5 2026-07-10
DAL2272 - 5 2026-06-23
DAL2204 - 5 2026-07-06
DAL1830 Delta Air Lines 5 2026-07-21
DAL1757 Delta Air Lines 5 2026-04-26

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 DAL624 MEX → JFK Jul 26, 20:35 UTCJul 26, 22:15 UTC1h 40m
2026-07-26 DAL625 JFK → MEX Jul 26, 14:14 UTCJul 26, 18:36 UTC4h 22m
2026-07-26 DAL625 JFK → MEX Jul 26, 14:15 UTCJul 26, 18:15 UTC4h 0m
2026-07-26 DAL498 DTW → CHS Jul 26, 07:00 UTCJul 26, 11:25 UTC4h 25m
2026-07-25 DAL807 JFK → AUS Jul 25, 17:00 UTCJul 25, 21:55 UTC4h 55m
2026-07-25 DAL807 JFK → AUS Jul 25, 16:58 UTCJul 25, 21:51 UTC4h 53m
2026-07-25 DAL2420 JFK → BOS Jul 25, 12:05 UTCJul 25, 13:50 UTC1h 45m
2026-07-25 DAL2420 JFK → BOS Jul 25, 12:02 UTCJul 25, 13:46 UTC1h 44m
2026-07-25 DAL1548 STL → DTW Jul 25, 09:40 UTCJul 25, 10:40 UTC1h 0m
2026-07-25 DAL1548 STL → DTW Jul 25, 09:39 UTCJul 25, 10:44 UTC1h 5m
2026-07-25 DAL1735 SEA → DEN Jul 25, 01:45 UTCJul 25, 02:45 UTC1h 0m
2026-07-25 DAL1735 SEA → DEN Jul 25, 01:40 UTCJul 25, 02:46 UTC1h 6m
2026-07-24 DAL777 BOS → ORD Jul 24, 20:25 UTCJul 25, 00:00 UTC3h 35m
2026-07-24 DAL777 BOS → ORD Jul 24, 12:40 UTCJul 24, 16:15 UTC3h 35m
2026-07-24 DAL1548 STL → DTW Jul 24, 09:40 UTCJul 24, 10:40 UTC1h 0m
2026-07-24 DAL2881 ATL → MCO Jul 24, 00:05 UTCJul 24, 01:00 UTC55m
2026-07-24 DAL2881 ATL → MCO Jul 24, 00:03 UTCJul 24, 00:58 UTC55m
2026-07-23 DAL748 MSP → LAX Jul 23, 19:05 UTCJul 23, 22:30 UTC3h 25m
2026-07-23 DAL2262 ORD → LGA Jul 23, 14:25 UTCJul 23, 17:15 UTC2h 50m
2026-07-22 DAL2238 JFK → MIA Jul 22, 21:50 UTCJul 23, 00:35 UTC2h 45m
2026-07-22 DAL2238 JFK → MIA Jul 22, 17:50 UTCJul 22, 20:40 UTC2h 50m
2026-07-22 DAL2263 TPA → MSP Jul 22, 11:55 UTCJul 22, 14:55 UTC3h 0m
2026-07-22 DAL2263 TPA → MSP Jul 22, 11:54 UTCJul 22, 14:50 UTC2h 56m
2026-07-22 DAL1720 BOS → PHX Jul 22, 00:45 UTCJul 22, 01:45 UTC1h 0m
2026-07-21 DAL1831 GUA → ATL Jul 21, 19:45 UTCJul 21, 22:55 UTC3h 10m
2026-07-21 DAL1830 ATL → GUA Jul 21, 17:40 UTCJul 21, 17:55 UTC15m
2026-07-21 DAL1830 ATL → GUA Jul 21, 14:50 UTCJul 21, 17:10 UTC2h 20m
2026-07-21 DAL2080 MCO → LGA Jul 21, 11:25 UTCJul 21, 12:35 UTC1h 10m
2026-07-21 DAL1735 SEA → DEN Jul 21, 01:40 UTCJul 21, 02:40 UTC1h 0m
2026-07-21 DAL1735 SEA → DEN Jul 21, 01:40 UTCJul 21, 02:41 UTC1h 1m
2026-07-20 DAL1873 - Jul 20, 20:05 UTCJul 20, 23:30 UTC3h 25m
2026-07-20 DAL1894 ATL → SXM Jul 20, 14:05 UTCJul 20, 17:15 UTC3h 10m
2026-07-20 DAL1894 ATL → SXM Jul 20, 14:05 UTCJul 20, 17:37 UTC3h 32m
2026-07-20 DAL1215 MSP → SLC Jul 20, 10:40 UTCJul 20, 11:55 UTC1h 15m
2026-07-20 DAL1229 ATL → FLL Jul 20, 04:35 UTCJul 20, 05:55 UTC1h 20m
2026-07-19 DAL1873 - Jul 19, 21:20 UTCJul 20, 00:40 UTC3h 20m
2026-07-19 DAL1873 SXM → ATL Jul 19, 21:07 UTCJul 20, 00:38 UTC3h 31m
2026-07-19 DAL1894 ATL → SXM Jul 19, 16:05 UTCJul 19, 19:10 UTC3h 5m
2026-07-19 DAL391 DFW → BOS Jul 19, 07:00 UTCJul 19, 11:00 UTC4h 0m
2026-07-19 DAL391 DFW → BOS Jul 19, 01:50 UTCJul 19, 05:40 UTC3h 50m
2026-07-18 DAL1756 SJO → ATL Jul 18, 20:00 UTCJul 19, 00:00 UTC4h 0m
2026-07-18 DAL1756 SJO → ATL Jul 18, 19:53 UTCJul 19, 00:02 UTC4h 9m
2026-07-18 DAL1937 BOS → MSP Jul 18, 14:25 UTCJul 18, 16:05 UTC1h 40m
2026-07-18 DAL1937 BOS → MSP Jul 18, 14:24 UTCJul 18, 18:03 UTC3h 39m
2026-07-18 DAL857 LAS → ATL Jul 18, 09:15 UTCJul 18, 12:50 UTC3h 35m
2026-07-18 DAL825 LGA → MSP Jul 18, 04:15 UTCJul 18, 07:45 UTC3h 30m
2026-07-17 DAL599 - Jul 17, 21:44 UTCJul 18, 00:50 UTC3h 5m
2026-07-17 DAL602 ATL → MEX Jul 17, 16:34 UTCJul 17, 19:25 UTC2h 50m
2026-07-17 DAL602 ATL → MEX Jul 17, 16:30 UTCJul 17, 19:25 UTC2h 55m
2026-07-17 DAL744 TPA → ATL Jul 17, 13:10 UTCJul 17, 14:10 UTC1h 0m

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 N553NW page for operator, model, and routing details .

Mode-S A70BD1 frequently asked

What is Mode-S code A70BD1?
A70BD1 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N553NW.
Where is Mode-S A70BD1 registered?
Mode-S code A70BD1 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 A70BD1 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 22:15 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A70BD1, octal 51605721, decimal 10,947,537.
What flights does A70BD1 operate?
Mode-S A70BD1 has broadcast 20 distinct callsigns, including DAL2238, DAL2076, DAL1756, DAL913, DAL1937.