UAL166

Flight

Status

Incomplete (signal lost)

Departure

Taiwan Taoyuan International Airport (TPE) — Taipei, Taiwan

Departed

2026-09-16 03:01 UTC

Arrival

Antonio B. Won Pat International Airport (GUM) — Hagåtña, Guam International Airport, Guam (predicted)

Distance flown

346 km

Straight-line distance

2782 km

Aircraft

Registration

N17329

Type

Boeing 737 MAX 8

Seats

166 total (16 Business, 150 Economy)

Altitude & speed

Max altitude

37,000 ft

Max ground speed

466 kt

Tracked

40m · 335 km

Altitude (ft, max 37,000)

Ground speed (kt, max 466)

Altitude (ft, max 37,000)

Ground speed (kt, max 466)

From the ADS-B positions we received; time since the first fix. A dashed stretch is a gap in reception, bridged by a straight line.

Route map

Airline

United Airlines (UAL)

Latest flights

Departed	Flight	Route	Reg	Aircraft	Status	Distance
2026-09-30 03:23 UTC	UAL166	TPE → GUM Taipei → Hagåtña, Guam International Airport	N17302	Boeing 737 MAX 8	Completed	2861 km
2026-09-26 03:34 UTC	UAL166	TPE → GUM Taipei → Hagåtña, Guam International Airport	N27304	Boeing 737 MAX 8	Incomplete (signal lost)	~3526 km est. (891 km recorded)
2026-09-23 03:00 UTC	UAL166	TPE → GUM Taipei → Hagåtña, Guam International Airport	N17309	Boeing 737 MAX 8	Completed (landing presumed)	3178 km
2026-09-19 03:23 UTC	UAL166	TPE → GUM Taipei → Hagåtña, Guam International Airport	N17302	Boeing 737 MAX 8	Completed	328 km
2026-09-16 03:01 UTC	UAL166	TPE → GUM Taipei → Hagåtña, Guam International Airport	N17329	Boeing 737 MAX 8	Incomplete (signal lost)	~2869 km est. (346 km recorded)
2026-09-12 02:55 UTC	UAL166	TPE → GUM Taipei → Hagåtña, Guam International Airport	N17309	Boeing 737 MAX 8	Completed	2866 km
2026-09-05 02:53 UTC	UAL166	TPE → GUM Taipei → Hagåtña, Guam International Airport	N17303	Boeing 737 MAX 8	Completed	2985 km
2026-09-02 02:56 UTC	UAL166	TPE → GUM Taipei → Hagåtña, Guam International Airport	N17302	Boeing 737 MAX 8	Completed	~3062 km est. (940 km recorded)
2026-08-29 02:53 UTC	UAL166	TPE → GUM Taipei → Hagåtña, Guam International Airport	N17329	Boeing 737 MAX 8	Completed	3249 km
2026-08-26 02:50 UTC	UAL166	TPE → GUM Taipei → Hagåtña, Guam International Airport	N17329	Boeing 737 MAX 8	Completed	2840 km
2026-08-22 02:57 UTC	UAL166	TPE → GUM Taipei → Hagåtña, Guam International Airport	N73283	Boeing 737-800	Completed	2955 km
2026-08-19 03:09 UTC	UAL166	TPE → ? Taipei → ?	N17303	Boeing 737 MAX 8	Completed	2501 km
2026-08-15 03:03 UTC	UAL166	TPE → ? Taipei → ?	N37293	Boeing 737-800	Completed	2217 km