Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

A94B6B

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N69840 · BOEING 737-900 · operated by UNITED AIRLINES INC

Hex
A94B6B
Octal
52245553
Decimal
11,094,891
Country
US
Tail
N69840
Type
B739
No current signal · last broadcast Jul 26, 15:55 UTC
Flights observed
456
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 15:55 UTC

Last known position

Most recent position reported by Mode-S A94B6B.

Country allocation

The ICAO 24-bit address A94B6B 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
UAL2194 United Airlines 5 2026-05-23
UAL1859 - 5 2026-07-06
UAL709 United Airlines 4 2026-04-20
UAL1626 United Airlines 4 2026-05-26
UAL1215 - 4 2026-06-29
UAL1168 United Airlines 4 2026-06-02
UAL1115 United Airlines 4 2026-05-18
UAL457 - 3 2026-06-19
UAL377 United Airlines 3 2026-07-23
UAL334 - 3 2026-07-06
UAL293 United Airlines 3 2026-04-25
UAL2776 - 3 2026-06-22
UAL2685 - 3 2026-07-07
UAL251 - 3 2026-06-16
UAL2366 - 3 2026-06-30
UAL2217 - 3 2026-06-30
UAL2014 United Airlines 3 2026-07-26
UAL1538 United Airlines 3 2026-05-27
UAL1535 United Airlines 3 2026-04-16
UAL1524 - 3 2026-06-27

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 UAL1782 BOI → DEN Jul 26, 14:10 UTCJul 26, 15:40 UTC1h 30m
2026-07-26 UAL2014 DEN → SDF Jul 26, 02:15 UTCJul 26, 03:40 UTC1h 25m
2026-07-25 UAL1773 MIA → EWR Jul 25, 21:45 UTCJul 26, 01:00 UTC3h 15m
2026-07-25 UAL1773 MIA → EWR Jul 25, 21:44 UTCJul 26, 00:56 UTC3h 12m
2026-07-25 UAL1010 OMA → SFO Jul 25, 17:15 UTCJul 25, 20:35 UTC3h 20m
2026-07-25 UAL1347 SAT → IAD Jul 25, 02:00 UTCJul 25, 13:55 UTC11h 55m
2026-07-24 UAL395 EWR → SFO Jul 24, 20:30 UTCJul 24, 23:45 UTC3h 15m
2026-07-24 UAL1421 IAH → BWI Jul 24, 16:25 UTCJul 24, 18:35 UTC2h 10m
2026-07-24 UAL1825 EWR → SFO Jul 24, 12:40 UTCJul 24, 14:55 UTC2h 15m
2026-07-24 UAL357 IAD → SFO Jul 24, 04:55 UTCJul 24, 09:35 UTC4h 40m
2026-07-24 UAL1302 EWR → BOS Jul 24, 02:35 UTCJul 24, 03:40 UTC1h 5m
2026-07-23 UAL1281 RNO → SFO Jul 23, 22:40 UTCJul 24, 00:35 UTC1h 55m
2026-07-23 UAL1587 RSW → EWR Jul 23, 17:05 UTCJul 23, 20:15 UTC3h 10m
2026-07-23 UAL1279 EWR → SFO Jul 23, 12:25 UTCJul 23, 15:15 UTC2h 50m
2026-07-23 UAL377 DEN → ORD Jul 23, 03:58 UTCJul 23, 06:08 UTC2h 10m
2026-07-23 UAL377 DEN → ORD Jul 23, 03:50 UTCJul 23, 06:10 UTC2h 20m
2026-07-23 UAL352 IAD → BOS Jul 23, 00:05 UTCJul 23, 02:25 UTC2h 20m
2026-07-22 UAL1520 MCO → DEN Jul 22, 17:10 UTCJul 22, 20:25 UTC3h 15m
2026-07-22 UAL1520 MCO → DEN Jul 22, 17:04 UTCJul 22, 20:21 UTC3h 17m
2026-07-22 UAL2321 SFO → EWR Jul 22, 12:10 UTCJul 22, 15:15 UTC3h 5m
2026-07-22 UAL2852 EWR → DEN Jul 22, 02:10 UTCJul 22, 05:25 UTC3h 15m
2026-07-22 UAL2852 EWR → DEN Jul 22, 01:56 UTCJul 22, 05:32 UTC3h 36m
2026-07-21 UAL1511 - Jul 21, 19:05 UTCJul 21, 21:20 UTC2h 15m
2026-07-21 UAL1227 PHX → IAD Jul 21, 13:20 UTCJul 21, 15:50 UTC2h 30m
2026-07-20 UAL1932 EWR → MCO Jul 20, 23:20 UTCJul 21, 01:30 UTC2h 9m
2026-07-20 UAL1643 RIC → DEN Jul 20, 19:25 UTCJul 20, 21:45 UTC2h 20m
2026-07-20 UAL1739 EWR → MCO Jul 20, 14:35 UTCJul 20, 16:45 UTC2h 10m
2026-07-20 UAL2147 MIA → EWR Jul 20, 10:50 UTCJul 20, 11:35 UTC45m
2026-07-20 UAL2775 - Jul 20, 01:45 UTCJul 20, 04:20 UTC2h 35m
2026-07-20 UAL2775 IAH → IAD Jul 20, 01:40 UTCJul 20, 04:13 UTC2h 33m
2026-07-19 UAL2078 - Jul 19, 20:30 UTCJul 20, 00:00 UTC3h 30m
2026-07-19 UAL1882 TPA → SFO Jul 19, 15:25 UTCJul 19, 18:45 UTC3h 20m
2026-07-19 UAL1882 TPA → SFO Jul 19, 15:24 UTCJul 19, 18:41 UTC3h 17m
2026-07-19 UAL3903 OGG → SFO Jul 19, 11:40 UTCJul 19, 12:15 UTC35m
2026-07-18 UAL2674 - Jul 18, 00:10 UTCJul 18, 00:39 UTC30m
2026-07-17 UAL1976 BOS → IAH Jul 17, 17:50 UTCJul 17, 21:25 UTC3h 35m
2026-07-17 UAL1977 - Jul 17, 12:55 UTCJul 17, 16:15 UTC3h 20m
2026-07-16 UAL2474 - Jul 16, 23:25 UTCJul 17, 01:39 UTC2h 15m
2026-07-16 UAL462 - Jul 16, 19:35 UTCJul 16, 21:40 UTC2h 5m
2026-07-16 UAL686 - Jul 16, 14:15 UTCJul 16, 17:40 UTC3h 25m
2026-07-16 UAL2216 YVR → SFO Jul 16, 00:45 UTCJul 16, 02:55 UTC2h 10m
2026-07-15 UAL1151 - Jul 15, 21:30 UTCJul 15, 22:45 UTC1h 15m
2026-07-15 UAL1151 SFO → YVR Jul 15, 21:15 UTCJul 15, 23:10 UTC1h 55m
2026-07-14 UAL2866 SEA → SFO Jul 14, 23:20 UTCJul 15, 01:10 UTC1h 50m
2026-07-14 UAL2866 SEA → SFO Jul 14, 23:13 UTCJul 15, 01:07 UTC1h 54m
2026-07-14 UAL2744 SFO → SEA Jul 14, 20:30 UTCJul 14, 21:55 UTC1h 25m
2026-07-14 UAL520 - Jul 14, 18:15 UTCJul 14, 19:20 UTC1h 5m
2026-07-14 UAL520 LAX → SFO Jul 14, 18:03 UTCJul 14, 19:11 UTC1h 8m
2026-07-14 UAL2373 - Jul 14, 11:10 UTCJul 14, 14:35 UTC3h 25m
2026-07-14 UAL1754 - Jul 14, 02:05 UTCJul 14, 05:45 UTC3h 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 N69840 page for operator, model, and routing details .

Mode-S A94B6B frequently asked

What is Mode-S code A94B6B?
A94B6B is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N69840.
Where is Mode-S A94B6B registered?
Mode-S code A94B6B 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 A94B6B broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 15:55 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A94B6B, octal 52245553, decimal 11,094,891.
What flights does A94B6B operate?
Mode-S A94B6B has broadcast 20 distinct callsigns, including UAL2194, UAL1859, UAL709, UAL1626, UAL1215.