the record · airliner · Boeing 787-9 · flight page

N27965 flying as UAL177

On the ground at Denver International, moving at 77 knots.

Position from the receiver network, 8 seconds ago; local time 6:39 pm MDT (00:39 UTC). This page checks for a newer position every half minute while it is open.

Took off —in the air when first heard Yesterday at 7:05 pm

Last heard …still in the air, or beyond the receivers' hearing Yesterday at 7:55 pm

Length: 50 min
Distance: 436 nm (502 miles)
Top altitude: 39,000 ft
Fastest: 576 knots (663 mph)
Positions heard: 21

This flight is the one in progress (or the last one heard, if the aircraft flew beyond the receivers). Times are local to where the aircraft was.

Line colour: altitude Low 10,000 ft 25,000 ft 40,000 ft Start End

Altitude and speed through the flight

Move along the graph to read the altitude and speed at any moment.

Flights in the last 14 days

When	From	To	Length	Distance	Top altitude	Fastest
Yesterday at 7:05 pm to 7:55 pm	in the air when first heard	still in the air, or out of the network's hearing	50 min	436 nm	39,000 ft	576 kt
Thursday at 7:03 pm to 7:56 pm	in the air when first heard	still in the air, or out of the network's hearing	52 min	445 nm	39,000 ft	521 kt
Monday at 7:14 pm to 7:22 pm	George Bush Intcntl/Houston Airport IAH	still in the air, or out of the network's hearing	7 min	38 nm	14,475 ft	399 kt
Sunday at 11:14 am to 11:31 am	in the air when first heard	still in the air, or out of the network's hearing	17 min	129 nm	34,000 ft	449 kt
October 16 at 9:54 am to 10:59 am	Newark Liberty International EWR	still in the air, or out of the network's hearing	1 h 5 min	502 nm	34,000 ft	531 kt
October 15 at 4:23 pm to 5:41 pm	in the air when first heard	Newark Liberty International EWR	1 h 18 min	538 nm	39,000 ft	569 kt
October 14 at 11:42 am to 12:23 pm	in the air when first heard	still in the air, or out of the network's hearing	40 min	297 nm	33,000 ft	472 kt
October 14 at 5:53 am to 6:50 am	in the air when first heard	Newark Liberty International EWR	56 min	291 nm	41,000 ft	427 kt
October 12 at 8:41 pm to 9:18 pm	Newark Liberty International EWR	still in the air, or out of the network's hearing	37 min	200 nm	33,000 ft	543 kt
October 12 at 2:52 pm to 3:15 pm	in the air when first heard	Newark Liberty International EWR	23 min	81 nm	7,800 ft	316 kt
October 12 at 1:50 pm to 2:28 pm	in the air when first heard	still in the air, or out of the network's hearing	38 min	352 nm	38,975 ft	571 kt
October 12 at 9:05 am to 9:54 am	in the air when first heard	still in the air, or out of the network's hearing	48 min	427 nm	37,000 ft	545 kt
October 11 at 4:34 pm to 5:03 pm	in the air when first heard	still in the air, or out of the network's hearing	28 min	214 nm	38,000 ft	460 kt
October 11 at 1:14 pm to 1:28 pm	in the air when first heard	still in the air, or out of the network's hearing	13 min	113 nm	34,000 ft	513 kt
October 11 at 11:46 am to 12:01 pm	in the air when first heard	still in the air, or out of the network's hearing	15 min	129 nm	30,000 ft	503 kt
October 11 at 10:37 am to 10:58 am	in the air when first heard	still in the air, or out of the network's hearing	21 min	158 nm	30,025 ft	479 kt
October 11 at 6:54 am to 7:34 am	in the air when first heard	still in the air, or out of the network's hearing	39 min	268 nm	37,975 ft	457 kt
October 11 at 5:32 am to 6:22 am	in the air when first heard	still in the air, or out of the network's hearing	49 min	417 nm	38,000 ft	527 kt
October 11 at 3:48 am to 4:08 am	in the air when first heard	still in the air, or out of the network's hearing	19 min	176 nm	38,000 ft	553 kt

Show the last 56 days · A flight is a run of positions with no gap longer than twenty minutes; an airport is named when the aircraft was low and within five miles of it at that end.

Positions from the adsb.lol community network (open data). A distance is the sum of the straight lines between the positions heard, so it is a little short of the true track. Positions are kept in full for 7 days and at one point every five minutes after that, for 180 days. Map: OpenFreeMap, OpenMapTiles, OpenStreetMap contributors. For understanding where an aircraft went, not for flying.

The aircraft

Aircraft: Boeing 787-9, built 2016
Kind: Airliner, 422 seats
Operator: United Airlines INC
Registered in: Chicago, IL
Transponder code: A2CB33

The full register record, with its history and connections. Find it on the live map and follow it with its trail.