Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

A091D5

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N136DQ · AIRBUS A220-100 · operated by DELTA AIR LINES INC

Hex
A091D5
Octal
50110725
Decimal
10,523,093
Country
US
Tail
N136DQ
Type
BCS1
No current signal · last broadcast 8h ago
Flights observed
243
Distinct callsigns
20
Country
US
Last broadcast
8h ago

Last known position

Most recent position reported by Mode-S A091D5.

Country allocation

The ICAO 24-bit address A091D5 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
DAL2245 Delta Air Lines 17 2026-05-21
DAL1553 Delta Air Lines 10 2026-05-07
DAL2327 Delta Air Lines 9 2026-05-23
DAL1277 Delta Air Lines 9 2026-05-25
DAL1254 Delta Air Lines 7 2026-05-29
DAL2811 Delta Air Lines 6 2026-05-28
DAL1744 Delta Air Lines 6 2026-05-28
DAL724 Delta Air Lines 5 2026-04-17
DAL572 Delta Air Lines 5 2026-04-16
DAL317 Delta Air Lines 5 2026-04-22
DAL1198 Delta Air Lines 5 2026-05-25
DAL2633 Delta Air Lines 4 2026-04-23
DAL2592 Delta Air Lines 4 2026-04-14
DAL2502 Delta Air Lines 4 2026-05-20
DAL2412 Delta Air Lines 4 2026-04-17
DAL396 Delta Air Lines 3 2026-05-20
DAL370 Delta Air Lines 3 2026-04-25
DAL3073 Delta Air Lines 3 2026-04-17
DAL2920 Delta Air Lines 3 2026-05-27
DAL2797 - 3 2026-04-13

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-30 DAL1304 DTW → SFO May 30, 03:10 UTCMay 30, 04:35 UTC1h 25m
2026-05-29 DAL1254 ATL → PVD May 29, 22:30 UTCMay 29, 22:35 UTC5m
2026-05-29 DAL1254 ATL → PVD May 29, 20:45 UTCMay 29, 22:35 UTC1h 50m
2026-05-29 DAL1254 ATL → PVD May 29, 20:42 UTCMay 29, 22:11 UTC1h 29m
2026-05-29 DAL1254 ATL → PVD May 29, 18:00 UTCMay 29, 19:30 UTC1h 30m
2026-05-29 DAL1185 LGA → MSY May 29, 14:20 UTCMay 29, 15:45 UTC1h 25m
2026-05-29 DAL1304 DTW → SFO May 29, 03:05 UTCMay 29, 04:40 UTC1h 35m
2026-05-28 DAL2811 SLC → DFW May 28, 23:15 UTCMay 29, 01:35 UTC2h 20m
2026-05-28 DAL2811 SLC → DFW May 28, 19:35 UTCMay 28, 21:50 UTC2h 15m
2026-05-28 DAL1744 GEG → MSP May 28, 16:50 UTCMay 28, 17:45 UTC55m
2026-05-28 DAL1744 GEG → MSP May 28, 14:25 UTCMay 28, 15:05 UTC40m
2026-05-28 DAL2173 BOI → SLC May 28, 12:05 UTCMay 28, 12:55 UTC50m
2026-05-28 DAL2111 JFK → RSW May 28, 05:00 UTCMay 28, 05:40 UTC40m
2026-05-28 DAL2054 SFO → LAX May 28, 00:30 UTCMay 28, 03:40 UTC3h 10m
2026-05-27 DAL2054 SFO → LAX May 27, 20:05 UTCMay 27, 23:20 UTC3h 15m
2026-05-27 DAL2920 MCO → BOS May 27, 02:10 UTCMay 27, 02:57 UTC47m
2026-05-27 DAL1532 IAH → SLC May 27, 00:30 UTCMay 27, 01:09 UTC40m
2026-05-26 DAL1532 IAH → SLC May 26, 18:05 UTCMay 26, 20:40 UTC2h 35m
2026-05-26 DAL1532 IAH → SLC May 26, 18:02 UTCMay 26, 20:32 UTC2h 30m
2026-05-26 DAL596 CUN → ATL May 26, 13:04 UTCMay 26, 16:24 UTC3h 20m
2026-05-26 DAL2611 ATL → EWR May 26, 10:14 UTCMay 26, 10:54 UTC40m
2026-05-25 DAL1060 ATL → COS May 25, 23:45 UTCMay 26, 02:10 UTC2h 25m
2026-05-25 DAL1060 ATL → COS May 25, 23:43 UTCMay 26, 02:06 UTC2h 23m
2026-05-25 DAL1079 BOS → MIA May 25, 20:24 UTCMay 25, 22:19 UTC1h 55m
2026-05-25 DAL1198 ATL → MCO May 25, 17:35 UTCMay 25, 19:05 UTC1h 30m
2026-05-25 DAL1198 ATL → MCO May 25, 17:33 UTCMay 25, 19:00 UTC1h 27m
2026-05-25 DAL1198 ATL → MCO May 25, 15:05 UTCMay 25, 16:30 UTC1h 25m
2026-05-25 DAL2795 ATL → MCI May 25, 12:00 UTCMay 25, 12:35 UTC35m
2026-05-25 DAL1723 LAX → PDX May 25, 03:54 UTCMay 25, 04:56 UTC1h 2m
2026-05-25 DAL1723 LAX → PDX May 25, 03:55 UTCMay 25, 04:25 UTC30m
2026-05-25 DAL1277 SNA → SLC May 25, 00:45 UTCMay 25, 02:12 UTC1h 27m
2026-05-24 DAL1277 SNA → SLC May 24, 21:30 UTCMay 24, 21:50 UTC20m
2026-05-24 DAL1024 ATL → CHA May 24, 18:40 UTCMay 24, 19:50 UTC1h 10m
2026-05-24 DAL1024 ATL → CHA May 24, 15:50 UTCMay 24, 16:55 UTC1h 5m
2026-05-24 DAL1645 LAX → PDX May 24, 13:15 UTCMay 24, 14:25 UTC1h 10m
2026-05-24 DAL1645 LAX → PDX May 24, 13:10 UTCMay 24, 14:32 UTC1h 22m
2026-05-23 DAL762 PDX → ATL May 23, 23:28 UTCMay 24, 02:21 UTC2h 53m
2026-05-23 DAL762 PDX → ATL May 23, 23:30 UTCMay 24, 02:15 UTC2h 45m
2026-05-23 DAL2327 ATL → CHA May 23, 19:45 UTCMay 23, 22:05 UTC2h 20m
2026-05-23 DAL2327 ATL → CHA May 23, 19:35 UTCMay 23, 21:58 UTC2h 23m
2026-05-23 DAL2327 ATL → CHA May 23, 15:55 UTCMay 23, 18:05 UTC2h 10m
2026-05-23 DAL2717 ATL → LGA May 23, 11:20 UTCMay 23, 13:35 UTC2h 15m
2026-05-22 DAL2773 EWR → ATL May 22, 23:40 UTCMay 23, 02:15 UTC2h 35m
2026-05-22 DAL2327 ATL → CHA May 22, 19:35 UTCMay 22, 22:00 UTC2h 25m
2026-05-22 DAL2327 ATL → CHA May 22, 16:00 UTCMay 22, 18:15 UTC2h 15m
2026-05-22 DAL2491 CLT → MSP May 22, 10:45 UTCMay 22, 12:55 UTC2h 10m
2026-05-22 DAL2491 CLT → MSP May 22, 10:39 UTCMay 22, 12:46 UTC2h 7m
2026-05-22 DAL2929 MSP → CLT May 22, 02:30 UTCMay 22, 04:30 UTC2h 0m
2026-05-21 DAL1605 JFK → TPA May 21, 22:45 UTCMay 21, 23:55 UTC1h 10m
2026-05-21 DAL1605 JFK → TPA May 21, 20:30 UTCMay 21, 21:35 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 N136DQ page for operator, model, and routing details .

Mode-S A091D5 frequently asked

What is Mode-S code A091D5?
A091D5 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N136DQ.
Where is Mode-S A091D5 registered?
Mode-S code A091D5 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 A091D5 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 A091D5, octal 50110725, decimal 10,523,093.
What flights does A091D5 operate?
Mode-S A091D5 has broadcast 20 distinct callsigns, including DAL2245, DAL1553, DAL2327, DAL1277, DAL1254.