flight Aircraft
N17421
BOEING 737 MAX 9
Operated by UNITED AIRLINES INC
- Tail number
- N17421
- Type
- B39M
- Mode-S
- A12AC1
Not currently tracked · last seen Jul 26, 21:45 UTC
- Flights observed
- 434 showing last 50
- Avg flight time
- 2h 29m
- Typical route
- DEN → BOS
- Last seen
- Jul 26, 21:45 UTC
Last known area
Recent flights last 50
| Date | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|
| 2026-07-26 | LAS → LAX | Jul 26, 20:20 UTC | Jul 26, 21:45 UTC | 1h 25m |
| 2026-07-26 | EWR → MSY | Jul 26, 17:15 UTC | Jul 26, 18:45 UTC | 1h 30m |
| 2026-07-26 | EWR → PBI | Jul 26, 11:00 UTC | Jul 26, 15:10 UTC | 4h 10m |
| 2026-07-25 | IAH → BON | Jul 25, 17:40 UTC | Jul 25, 21:40 UTC | 4h 0m |
| 2026-07-25 | DEN → EWR | Jul 25, 12:25 UTC | Jul 25, 14:50 UTC | 2h 25m |
| 2026-07-25 | LAX → SAL | Jul 25, 06:10 UTC | Jul 25, 10:40 UTC | 4h 30m |
| 2026-07-25 | DEN → BOS | Jul 25, 01:35 UTC | Jul 25, 02:15 UTC | 40m |
| 2026-07-24 | DEN → BOS | Jul 24, 21:20 UTC | Jul 24, 21:30 UTC | 10m |
| 2026-07-24 | - | Jul 24, 14:20 UTC | Jul 24, 19:35 UTC | 5h 15m |
| 2026-07-24 | MCO → EWR | Jul 24, 00:25 UTC | Jul 24, 05:00 UTC | 4h 35m |
| 2026-07-23 | MCO → EWR | Jul 23, 21:00 UTC | Jul 23, 23:10 UTC | 2h 10m |
| 2026-07-23 | SNA → EWR | Jul 23, 14:30 UTC | Jul 23, 19:20 UTC | 4h 50m |
| 2026-07-23 | ORD → PHX | Jul 23, 02:05 UTC | Jul 23, 03:25 UTC | 1h 20m |
| 2026-07-22 | BZN → SFO | Jul 22, 19:10 UTC | Jul 23, 00:10 UTC | 5h 0m |
| 2026-07-22 | MFE → IAH | Jul 22, 14:55 UTC | Jul 22, 17:45 UTC | 2h 50m |
| 2026-07-22 | EWR → ANC | Jul 22, 03:30 UTC | Jul 22, 13:05 UTC | 9h 35m |
| 2026-07-21 | YHZ → BOS | Jul 21, 22:00 UTC | Jul 22, 01:35 UTC | 3h 35m |
| 2026-07-21 | SJC → IAH | Jul 21, 17:10 UTC | Jul 21, 18:45 UTC | 1h 35m |
| 2026-07-21 | DEN → SFO | Jul 21, 05:40 UTC | Jul 21, 07:15 UTC | 1h 35m |
| 2026-07-21 | DEN → SFO | Jul 21, 03:35 UTC | Jul 21, 04:35 UTC | 1h 0m |
| 2026-07-20 | ORD → SFO | Jul 20, 22:30 UTC | Jul 20, 23:10 UTC | 40m |
| 2026-07-20 | ORD → SFO | Jul 20, 18:05 UTC | Jul 20, 18:15 UTC | 10m |
| 2026-07-20 | SBA → SFO | Jul 20, 05:05 UTC | Jul 20, 05:20 UTC | 15m |
| 2026-07-20 | SBA → SFO | Jul 20, 00:25 UTC | Jul 20, 01:05 UTC | 40m |
| 2026-07-19 | MIA → EWR | Jul 19, 21:05 UTC | Jul 19, 21:55 UTC | 50m |
| 2026-07-19 | MIA → EWR | Jul 19, 17:10 UTC | Jul 19, 17:30 UTC | 20m |
| 2026-07-19 | - | Jul 19, 08:30 UTC | Jul 19, 08:40 UTC | 10m |
| 2026-07-19 | - | Jul 19, 03:45 UTC | Jul 19, 04:40 UTC | 55m |
| 2026-07-18 | SFO → DEN | Jul 18, 21:20 UTC | Jul 19, 02:25 UTC | 5h 5m |
| 2026-07-18 | - | Jul 18, 13:20 UTC | Jul 18, 18:05 UTC | 4h 45m |
| 2026-07-18 | EWR → SAT | Jul 18, 00:50 UTC | Jul 18, 01:30 UTC | 40m |
| 2026-07-17 | - | Jul 17, 22:20 UTC | Jul 17, 23:14 UTC | 55m |
| 2026-07-17 | - | Jul 17, 19:30 UTC | Jul 17, 20:29 UTC | 1h 0m |
| 2026-07-17 | - | Jul 17, 12:25 UTC | Jul 17, 17:35 UTC | 5h 10m |
| 2026-07-17 | SFO → FLL | Jul 17, 04:49 UTC | Jul 17, 10:00 UTC | 5h 10m |
| 2026-07-16 | LAS → SFO | Jul 16, 22:40 UTC | Jul 16, 23:44 UTC | 1h 5m |
| 2026-07-16 | - | Jul 16, 19:05 UTC | Jul 16, 20:15 UTC | 1h 10m |
| 2026-07-16 | - | Jul 16, 12:40 UTC | Jul 16, 17:25 UTC | 4h 45m |
| 2026-07-16 | DEN → BWI | Jul 16, 00:35 UTC | Jul 16, 03:40 UTC | 3h 5m |
| 2026-07-15 | - | Jul 15, 20:40 UTC | Jul 15, 22:40 UTC | 2h 0m |
| 2026-07-15 | - | Jul 15, 18:05 UTC | Jul 15, 19:05 UTC | 1h 0m |
| 2026-07-15 | - | Jul 15, 10:20 UTC | Jul 15, 15:50 UTC | 5h 30m |
| 2026-07-14 | SFO → BOS | Jul 14, 23:45 UTC | Jul 15, 04:55 UTC | 5h 10m |
| 2026-07-14 | - | Jul 14, 20:55 UTC | Jul 14, 21:40 UTC | 45m |
| 2026-07-14 | KOA → SFO | Jul 14, 17:17 UTC | Jul 14, 21:35 UTC | 4h 18m |
| 2026-07-14 | - | Jul 14, 17:00 UTC | Jul 14, 17:10 UTC | 10m |
| 2026-07-14 | - | Jul 14, 07:05 UTC | Jul 14, 07:25 UTC | 20m |
| 2026-07-14 | - | Jul 14, 02:25 UTC | Jul 14, 02:55 UTC | 30m |
| 2026-07-13 | IAD → SFO | Jul 13, 20:00 UTC | Jul 14, 00:45 UTC | 4h 45m |
| 2026-07-13 | SAV → IAD | Jul 13, 16:18 UTC | Jul 13, 17:21 UTC | 1h 3m |
Specifications
| Registration | N17421 |
| Aircraft type | BOEING 737 MAX 9 (B39M) |
| Operator | UNITED AIRLINES INC |
| Mode-S code | A12AC1 · 50225301 (octal) |
Looking for transponder-level data? View the Mode-S A12AC1 page for country allocation, callsign history, and ADS-B signal details.
N17421 frequently asked
What type of aircraft is N17421?
N17421 is a BOEING 737 MAX 9 (ICAO type code B39M).
Who operates N17421?
N17421 is operated by UNITED AIRLINES INC.
What is the Mode-S transponder code for N17421?
N17421 broadcasts on Mode-S (ICAO 24-bit) address A12AC1 (octal 50225301). View the transponder page.
What route does N17421 typically fly?
N17421 most frequently flies between DEN and BOS based on observed flights.
Where is N17421 right now?
N17421 is not currently being tracked; last seen Jul 26, 21:45 UTC.