Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

A939E8

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N694DL · BOEING 757-200 · operated by DELTA AIR LINES INC

Hex
A939E8
Octal
52234750
Decimal
11,090,408
Country
US
Tail
N694DL
Type
B752
Broadcasting now · callsign DAL391 · 37,000 ft
Flights observed
473
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 22:00 UTC

Current position

A939E8 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address A939E8 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
DAL1902 Delta Air Lines 12 2026-07-26
DAL1726 Delta Air Lines 11 2026-07-25
DAL1823 Delta Air Lines 10 2026-06-24
DAL1217 - 9 2026-07-09
DAL631 Delta Air Lines 7 2026-05-30
DAL602 - 7 2026-07-02
DAL1886 - 7 2026-07-11
DAL1101 Delta Air Lines 7 2026-06-09
DAL1031 Delta Air Lines 7 2026-07-21
DAL755 Delta Air Lines 6 2026-07-20
DAL377 - 6 2026-07-15
DAL1830 Delta Air Lines 6 2026-07-25
DAL1457 Delta Air Lines 6 2026-06-06
DAL1261 - 6 2026-07-02
DAL555 - 5 2026-07-15
DAL366 - 5 2026-07-06
DAL1930 Delta Air Lines 5 2026-06-24
DAL1894 Delta Air Lines 5 2026-07-18
DAL1885 - 5 2026-07-17
DAL1831 Delta Air Lines 5 2026-07-25

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 DAL1883 STT → JFK Jul 26, 19:45 UTCJul 26, 22:00 UTC2h 15m
2026-07-26 DAL1902 PVR → DTW Jul 26, 15:06 UTCJul 26, 18:29 UTC3h 23m
2026-07-26 DAL1902 PVR → DTW Jul 26, 15:10 UTCJul 26, 18:20 UTC3h 10m
2026-07-26 DAL965 ATL → SJC Jul 26, 11:35 UTCJul 26, 12:50 UTC1h 15m
2026-07-26 DAL965 ATL → SJC Jul 26, 11:32 UTCJul 26, 12:48 UTC1h 16m
2026-07-26 DAL502 ATL → SAN Jul 26, 06:25 UTCJul 26, 09:55 UTC3h 31m
2026-07-26 DAL955 SFO → ATL Jul 26, 00:48 UTCJul 26, 04:28 UTC3h 40m
2026-07-26 DAL955 SFO → ATL Jul 26, 00:50 UTCJul 26, 04:25 UTC3h 35m
2026-07-25 DAL1831 GUA → ATL Jul 25, 19:30 UTCJul 25, 22:40 UTC3h 10m
2026-07-25 DAL1830 ATL → GUA Jul 25, 17:50 UTCJul 25, 18:00 UTC10m
2026-07-25 DAL1830 ATL → GUA Jul 25, 15:05 UTCJul 25, 17:15 UTC2h 10m
2026-07-25 DAL1726 ATL → MSN Jul 25, 10:25 UTCJul 25, 11:25 UTC1h 0m
2026-07-24 DAL2385 MKE → ATL Jul 24, 23:55 UTCJul 25, 02:35 UTC2h 40m
2026-07-24 DAL1308 SFO → MSP Jul 24, 17:15 UTCJul 24, 19:55 UTC2h 40m
2026-07-24 DAL1308 SFO → MSP Jul 24, 17:11 UTCJul 24, 19:53 UTC2h 42m
2026-07-24 DAL2614 ORD → LGA Jul 24, 01:40 UTCJul 24, 03:50 UTC2h 10m
2026-07-24 DAL2614 ORD → LGA Jul 24, 01:36 UTCJul 24, 03:44 UTC2h 8m
2026-07-23 DAL9970 BOS → DTW Jul 23, 19:40 UTCJul 23, 22:20 UTC2h 40m
2026-07-23 DAL714 DTW → SLC Jul 23, 01:10 UTCJul 23, 06:00 UTC4h 50m
2026-07-22 DAL1883 STT → JFK Jul 22, 20:15 UTCJul 22, 23:25 UTC3h 10m
2026-07-22 DAL1883 STT → JFK Jul 22, 20:09 UTCJul 22, 23:25 UTC3h 16m
2026-07-22 DAL1902 PVR → DTW Jul 22, 14:55 UTCJul 22, 18:15 UTC3h 20m
2026-07-22 DAL1243 MSP → CHS Jul 22, 01:10 UTCJul 22, 03:25 UTC2h 15m
2026-07-21 DAL1243 MSP → CHS Jul 21, 21:35 UTCJul 21, 23:55 UTC2h 20m
2026-07-21 DAL1031 ATL → CHS Jul 21, 18:10 UTCJul 21, 19:45 UTC1h 35m
2026-07-21 DAL918 PHX → ATL Jul 21, 12:55 UTCJul 21, 16:10 UTC3h 15m
2026-07-20 DAL1135 DTW → PHX Jul 20, 21:15 UTCJul 21, 00:50 UTC3h 35m
2026-07-20 DAL1031 ATL → CHS Jul 20, 18:20 UTCJul 20, 19:45 UTC1h 25m
2026-07-20 DAL1031 ATL → CHS Jul 20, 18:16 UTCJul 20, 19:40 UTC1h 24m
2026-07-20 DAL755 LAS → ATL Jul 20, 13:10 UTCJul 20, 16:45 UTC3h 35m
2026-07-20 DAL781 BOS → MSP Jul 20, 03:50 UTCJul 20, 08:20 UTC4h 30m
2026-07-19 DAL1768 BOS → LIR Jul 19, 20:40 UTCJul 20, 00:05 UTC3h 25m
2026-07-19 DAL1768 BOS → LIR Jul 19, 20:36 UTCJul 20, 00:00 UTC3h 24m
2026-07-19 DAL1889 ATL → STT Jul 19, 16:00 UTCJul 19, 19:10 UTC3h 10m
2026-07-19 DAL1889 ATL → STT Jul 19, 16:00 UTCJul 19, 19:21 UTC3h 21m
2026-07-19 DAL1486 TPA → ATL Jul 19, 11:45 UTCJul 19, 12:45 UTC1h 0m
2026-07-19 DAL1486 TPA → ATL Jul 19, 11:43 UTCJul 19, 12:47 UTC1h 4m
2026-07-19 DAL1591 ATL → TPA Jul 19, 02:00 UTCJul 19, 03:05 UTC1h 5m
2026-07-18 DAL1873 - Jul 18, 19:45 UTCJul 18, 23:55 UTC4h 10m
2026-07-18 DAL1894 ATL → SXM Jul 18, 14:20 UTCJul 18, 17:30 UTC3h 10m
2026-07-18 DAL1726 TPA → ATL Jul 18, 10:25 UTCJul 18, 11:30 UTC1h 5m
2026-07-17 DAL2385 MKE → ATL Jul 17, 23:35 UTCJul 18, 02:29 UTC2h 55m
2026-07-17 DAL1885 MCO → MSP Jul 17, 01:35 UTCJul 17, 04:25 UTC2h 50m
2026-07-16 DAL1885 MSP → MCO Jul 16, 20:45 UTCJul 16, 23:35 UTC2h 50m
2026-07-16 DAL447 ANC → MSP Jul 16, 14:15 UTCJul 16, 18:55 UTC4h 40m
2026-07-16 DAL411 MSP → ANC Jul 16, 04:10 UTCJul 16, 09:35 UTC5h 25m
2026-07-16 DAL411 MSP → ANC Jul 16, 04:10 UTCJul 16, 09:46 UTC5h 36m
2026-07-15 DAL555 ANC → MSP Jul 15, 21:40 UTCJul 16, 02:25 UTC4h 45m
2026-07-15 DAL555 MSP → ANC Jul 15, 14:20 UTCJul 15, 19:40 UTC5h 20m
2026-07-15 DAL377 - Jul 15, 07:15 UTCJul 15, 11:55 UTC4h 40m

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 N694DL page for operator, model, and routing details .

Mode-S A939E8 frequently asked

What is Mode-S code A939E8?
A939E8 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N694DL.
Where is Mode-S A939E8 registered?
Mode-S code A939E8 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 A939E8 broadcasting right now?
Yes. Mode-S A939E8 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A939E8, octal 52234750, decimal 11,090,408.
What flights does A939E8 operate?
Mode-S A939E8 has broadcast 20 distinct callsigns, including DAL1902, DAL1726, DAL1823, DAL1217, DAL631.