Apparatus

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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
Broadcasting now · callsign DAL1449 · 18,725 ft
Flights observed
457
Distinct callsigns
20
Country
US
Last broadcast
2h ago

Current position

A091D5 is currently broadcasting. Map zoomed to live position.

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
DAL1277 - 13 2026-06-20
DAL1553 Delta Air Lines 12 2026-06-08
DAL1503 - 11 2026-07-03
DAL1744 Delta Air Lines 10 2026-06-04
DAL2327 Delta Air Lines 9 2026-05-23
DAL1254 Delta Air Lines 9 2026-06-05
DAL2811 Delta Air Lines 8 2026-05-31
DAL1198 - 8 2026-07-03
DAL2680 Delta Air Lines 7 2026-06-09
DAL1304 - 7 2026-06-16
DAL1185 Delta Air Lines 7 2026-06-16
DAL2798 - 6 2026-07-02
DAL2795 - 6 2026-07-02
DAL2502 Delta Air Lines 6 2026-07-01
DAL2181 - 6 2026-07-12
DAL724 Delta Air Lines 5 2026-04-17
DAL572 Delta Air Lines 5 2026-04-16
DAL317 Delta Air Lines 5 2026-04-22
DAL2895 Delta Air Lines 5 2026-06-13

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 DAL561 - Jul 14, 17:35 UTCJul 14, 18:25 UTC50m
2026-07-14 DAL561 MSP → MKE Jul 14, 15:50 UTCJul 14, 16:45 UTC55m
2026-07-14 DAL1635 - Jul 14, 11:30 UTCJul 14, 12:25 UTC55m
2026-07-14 DAL1657 - Jul 14, 02:40 UTCJul 14, 03:45 UTC1h 5m
2026-07-13 DAL2113 - Jul 13, 23:25 UTCJul 14, 00:50 UTC1h 25m
2026-07-13 DAL2113 MSP → CMH Jul 13, 20:45 UTCJul 13, 22:15 UTC1h 30m
2026-07-13 DAL2057 - Jul 13, 18:00 UTCJul 13, 19:25 UTC1h 25m
2026-07-13 DAL2057 CLE → MSP Jul 13, 17:58 UTCJul 13, 19:24 UTC1h 26m
2026-07-13 DAL2057 - Jul 13, 15:10 UTCJul 13, 16:40 UTC1h 30m
2026-07-13 DAL2848 - Jul 13, 10:50 UTCJul 13, 12:30 UTC1h 40m
2026-07-13 DAL3075 MSP → PIT Jul 13, 03:01 UTCJul 13, 04:35 UTC1h 35m
2026-07-12 DAL362 MSO → MSP Jul 12, 21:50 UTCJul 12, 23:59 UTC2h 9m
2026-07-12 DAL362 MSP → MSP Jul 12, 18:10 UTCJul 13, 00:05 UTC5h 55m
2026-07-12 DAL2847 - Jul 12, 15:35 UTCJul 12, 17:01 UTC1h 25m
2026-07-12 DAL2847 CLE → MSP Jul 12, 15:30 UTCJul 12, 17:00 UTC1h 30m
2026-07-12 DAL2181 MSP → CLE Jul 12, 12:35 UTCJul 12, 13:55 UTC1h 20m
2026-07-11 DAL2181 - Jul 11, 18:05 UTCJul 11, 20:10 UTC2h 5m
2026-07-11 DAL2181 AVL → MSP Jul 11, 18:02 UTCJul 11, 20:12 UTC2h 10m
2026-07-11 DAL2181 - Jul 11, 14:40 UTCJul 11, 16:30 UTC1h 50m
2026-07-11 DAL1641 EWR → MSP Jul 11, 10:30 UTCJul 11, 12:50 UTC2h 20m
2026-07-11 DAL1641 EWR → MSP Jul 11, 10:27 UTCJul 11, 12:53 UTC2h 26m
2026-07-11 DAL2846 MSP → EWR Jul 11, 02:15 UTCJul 11, 04:20 UTC2h 5m
2026-07-10 DAL1533 - Jul 10, 21:25 UTCJul 10, 22:25 UTC1h 0m
2026-07-10 DAL1533 - Jul 10, 18:40 UTCJul 10, 19:40 UTC1h 0m
2026-07-10 DAL845 - Jul 10, 15:45 UTCJul 10, 17:30 UTC1h 45m
2026-07-10 DAL2130 - Jul 10, 12:50 UTCJul 10, 14:25 UTC1h 35m
2026-07-10 DAL2130 - Jul 10, 03:55 UTCJul 10, 04:55 UTC1h 0m
2026-07-10 DAL2130 ORD → MSP Jul 10, 03:53 UTCJul 10, 04:50 UTC57m
2026-07-10 DAL2130 MSP → ORD Jul 10, 01:05 UTCJul 10, 02:30 UTC1h 25m
2026-07-09 DAL3113 - Jul 9, 21:05 UTCJul 9, 22:40 UTC1h 35m
2026-07-09 DAL3113 CVG → MSP Jul 9, 21:04 UTCJul 9, 22:33 UTC1h 29m
2026-07-09 DAL3113 - Jul 9, 18:45 UTCJul 9, 20:05 UTC1h 20m
2026-07-09 DAL2772 - Jul 9, 15:30 UTCJul 9, 17:05 UTC1h 35m
2026-07-09 DAL2772 - Jul 9, 14:15 UTCJul 9, 14:45 UTC30m
2026-07-09 DAL1827 BOS → NAS Jul 9, 11:59 UTCJul 9, 13:57 UTC1h 58m
2026-07-09 DAL1827 BOS → NAS Jul 9, 13:20 UTCJul 9, 14:45 UTC1h 25m
2026-07-09 DAL1827 BOS → NAS Jul 9, 00:30 UTCJul 9, 02:55 UTC2h 25m
2026-07-08 DAL1827 BOS → NAS Jul 8, 12:05 UTCJul 8, 14:10 UTC2h 5m
2026-07-07 DAL2113 - Jul 7, 23:20 UTCJul 8, 00:50 UTC1h 30m
2026-07-07 DAL2113 MSP → CMH Jul 7, 20:45 UTCJul 7, 22:15 UTC1h 30m
2026-07-07 DAL2181 - Jul 7, 17:20 UTCJul 7, 19:20 UTC2h 0m
2026-07-07 DAL2181 - Jul 7, 14:20 UTCJul 7, 16:10 UTC1h 50m
2026-07-07 DAL1641 EWR → MSP Jul 7, 10:50 UTCJul 7, 13:05 UTC2h 15m
2026-07-07 DAL2846 MSP → EWR Jul 7, 04:55 UTCJul 7, 07:00 UTC2h 5m
2026-07-07 DAL2846 MSP → EWR Jul 7, 04:55 UTCJul 7, 07:01 UTC2h 6m
2026-07-07 DAL1306 - Jul 7, 00:35 UTCJul 7, 01:30 UTC55m
2026-07-06 DAL1306 MSP → ORD Jul 6, 22:00 UTCJul 6, 23:00 UTC1h 0m
2026-07-06 DAL2446 - Jul 6, 14:15 UTCJul 6, 15:00 UTC45m
2026-07-06 DAL2307 - Jul 6, 01:20 UTCJul 6, 02:10 UTC50m
2026-07-06 DAL2307 MSP → BIS Jul 6, 01:17 UTCJul 6, 02:21 UTC1h 4m

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?
Yes. Mode-S A091D5 is currently airborne.
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, DAL1277, DAL1553, DAL1503, DAL1744.