N851MB

Flight

Status

Completed

Arrival confirmed via

ADS-B (ground reading)

Departure

Rocky Mountain Metropolitan Airport (BJC) — Denver, United States

Est. departure time

2026-09-16 02:31 UTC (approx.)

Arrival

Boulder Municipal Airport (WBU) — Boulder, United States

Distance flown

19 km

Straight-line distance

17 km

Approach distance

19 km

Aircraft

Registration

N851MB

Type

AEROSPATIALE AS-350 Ecureuil

Altitude & speed

Max altitude

6,400 ft

Max ground speed

122 kt

Tracked

6m · 19 km

Altitude (ft, max 6,400)

Ground speed (kt, max 122)

Altitude (ft, max 6,400)

Ground speed (kt, max 122)

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

Airlines

No airline on record.

Latest flights

Departed	Flight	Route	Reg	Aircraft	Status	Distance
2026-10-03 21:47 UTC	N851MB	FNL → WBU Fort Collins/Loveland → Boulder	N851MB	AEROSPATIALE AS-350 Ecureuil	Completed	57 km
2026-10-03 19:54 UTC	N851MB	? → FNL ? → Fort Collins/Loveland	N851MB	AEROSPATIALE AS-350 Ecureuil	Completed	58 km
2026-10-03 18:34 UTC	N851MB	WBU → ? Boulder → ?	N851MB	AEROSPATIALE AS-350 Ecureuil	Incomplete (signal lost)	44 km
2026-10-03 17:34 UTC	N851MB	FNL → WBU Fort Collins/Loveland → Boulder	N851MB	AEROSPATIALE AS-350 Ecureuil	Completed (landing presumed)	57 km
2026-10-03 16:31 UTC	N851MB	? → FNL ? → Fort Collins/Loveland	N851MB	AEROSPATIALE AS-350 Ecureuil	Completed	41 km
2026-10-03 16:03 UTC	N851MB	WBU → ? Boulder → ?	N851MB	AEROSPATIALE AS-350 Ecureuil	Incomplete (signal lost)	45 km
2026-10-03 04:06 UTC	N851MB	APA → WBU Denver → Boulder	N851MB	AEROSPATIALE AS-350 Ecureuil	Completed	68 km
2026-10-03 02:37 UTC	N851MB	SBS → APA Steamboat Springs → Denver	N851MB	AEROSPATIALE AS-350 Ecureuil	Completed	213 km
2026-10-03 00:45 UTC	N851MB	FNL → SBS Fort Collins/Loveland → Steamboat Springs	N851MB	AEROSPATIALE AS-350 Ecureuil	Completed (landing presumed)	160 km
2026-10-03 00:16 UTC	N851MB	WBU → FNL Boulder → Fort Collins/Loveland	N851MB	AEROSPATIALE AS-350 Ecureuil	Completed	54 km
2026-10-02 17:36 UTC	N851MB	APA → WBU Denver → Boulder	N851MB	AEROSPATIALE AS-350 Ecureuil	Completed	201 km
2026-10-02 16:16 UTC	N851MB	? → APA ? → Denver	N851MB	AEROSPATIALE AS-350 Ecureuil	Completed	91 km
2026-10-02 15:28 UTC	N851MB	WBU → ? Boulder → ?	N851MB	AEROSPATIALE AS-350 Ecureuil	Incomplete (signal lost)	104 km
2026-10-01 19:41 UTC	N851MB	WBU → WBU Boulder → Boulder	N851MB	AEROSPATIALE AS-350 Ecureuil	Completed	123 km
2026-10-01 05:35 UTC	N851MB	APA → WBU Denver → Boulder	N851MB	AEROSPATIALE AS-350 Ecureuil	Completed	68 km
2026-10-01 04:28 UTC	N851MB	WBU → APA Boulder → Denver	N851MB	AEROSPATIALE AS-350 Ecureuil	Completed	75 km
2026-09-29 17:31 UTC	N851MB	FNL → WBU Fort Collins/Loveland → Boulder	N851MB	AEROSPATIALE AS-350 Ecureuil	Completed	58 km
2026-09-29 13:31 UTC	N851MB	WBU → FNL Boulder → Fort Collins/Loveland	N851MB	AEROSPATIALE AS-350 Ecureuil	Completed	100 km
2026-09-28 17:36 UTC	N851MB	GXY → WBU Greeley → Boulder	N851MB	AEROSPATIALE AS-350 Ecureuil	Completed	69 km
2026-09-19 00:56 UTC	N851MB	WBU → GXY Boulder → Greeley	N851MB	AEROSPATIALE AS-350 Ecureuil	Completed	69 km
2026-09-18 08:38 UTC	N851MB	WBU → WBU Boulder → Boulder	N851MB	AEROSPATIALE AS-350 Ecureuil	Completed	125 km
2026-09-18 05:33 UTC	N851MB	APA → WBU Denver → Boulder	N851MB	AEROSPATIALE AS-350 Ecureuil	Completed	69 km
2026-09-18 04:12 UTC	N851MB	WBU → APA Boulder → Denver	N851MB	AEROSPATIALE AS-350 Ecureuil	Completed	76 km
2026-09-16 22:58 UTC	N851MB	APA → WBU Denver → Boulder	N851MB	AEROSPATIALE AS-350 Ecureuil	Completed	63 km
2026-09-16 22:02 UTC	N851MB	BFK → APA Aurora → Denver	N851MB	AEROSPATIALE AS-350 Ecureuil	Completed	23 km
2026-09-16 20:27 UTC	N851MB	WBU → BFK Boulder → Aurora	N851MB	AEROSPATIALE AS-350 Ecureuil	Completed	54 km
2026-09-16 15:24 UTC	N851MB	APA → WBU Denver → Boulder	N851MB	AEROSPATIALE AS-350 Ecureuil	Completed	74 km
2026-09-16 14:03 UTC	N851MB	WBU → APA Boulder → Denver	N851MB	AEROSPATIALE AS-350 Ecureuil	Completed	68 km
2026-09-16 02:38 UTC	N851MB	BJC → WBU Denver → Boulder	N851MB	AEROSPATIALE AS-350 Ecureuil	Completed	19 km
2026-09-16 02:10 UTC	N851MB	WBU → BJC Boulder → Denver	N851MB	AEROSPATIALE AS-350 Ecureuil	Completed	21 km
2026-09-15 23:19 UTC	N851MB	APA → WBU Denver → Boulder	N851MB	AEROSPATIALE AS-350 Ecureuil	Completed	268 km
2026-09-15 22:26 UTC	N851MB	DEN → APA Denver → Denver	N851MB	AEROSPATIALE AS-350 Ecureuil	Completed (landing presumed)	81 km
2026-09-15 21:08 UTC	N851MB	WBU → DEN Boulder → Denver	N851MB	AEROSPATIALE AS-350 Ecureuil	Completed (landing presumed)	~64 km est. (42 km recorded)
2026-09-15 18:26 UTC	N851MB	? → WBU ? → Boulder	N851MB	AEROSPATIALE AS-350 Ecureuil	Completed	49 km
2026-09-15 16:18 UTC	N851MB	WBU → ? Boulder → ?	N851MB	AEROSPATIALE AS-350 Ecureuil	Incomplete (signal lost)	45 km
2026-09-15 07:48 UTC	N851MB	WBU → WBU Boulder → Boulder	N851MB	AEROSPATIALE AS-350 Ecureuil	Completed	53 km
2026-09-14 03:49 UTC	N851MB	APA → WBU Denver → Boulder	N851MB	AEROSPATIALE AS-350 Ecureuil	Completed	77 km
2026-09-14 01:31 UTC	N851MB	WBU → APA Boulder → Denver	N851MB	AEROSPATIALE AS-350 Ecureuil	Completed	109 km
2026-09-13 19:35 UTC	N851MB	? → WBU ? → Boulder	N851MB	AEROSPATIALE AS-350 Ecureuil	Completed (landing presumed)	59 km
2026-09-13 18:15 UTC	N851MB	WBU → ? Boulder → ?	N851MB	AEROSPATIALE AS-350 Ecureuil	Incomplete (signal lost)	51 km
2026-09-12 20:22 UTC	N851MB	? → WBU ? → Boulder	N851MB	AEROSPATIALE AS-350 Ecureuil	Completed	39 km
2026-09-12 18:21 UTC	N851MB	APA → ? Denver → ?	N851MB	AEROSPATIALE AS-350 Ecureuil	Incomplete (signal lost)	79 km
2026-09-12 15:58 UTC	N851MB	WBU → APA Boulder → Denver	N851MB	AEROSPATIALE AS-350 Ecureuil	Completed	181 km
2026-09-12 01:40 UTC	N851MB	WBU → WBU Boulder → Boulder	N851MB	AEROSPATIALE AS-350 Ecureuil	Completed	~9 km est. (5 km recorded)
2026-09-12 01:12 UTC	N851MB	? → WBU ? → Boulder	N851MB	AEROSPATIALE AS-350 Ecureuil	Completed	52 km
2026-09-12 00:08 UTC	N851MB	WBU → ? Boulder → ?	N851MB	AEROSPATIALE AS-350 Ecureuil	Incomplete (signal lost)	40 km
2026-09-11 17:37 UTC	N851MB	WBU → WBU Boulder → Boulder	N851MB	AEROSPATIALE AS-350 Ecureuil	Completed	150 km
2026-09-11 00:57 UTC	N851MB	GXY → ? Greeley → ?	N851MB	AEROSPATIALE AS-350 Ecureuil	Incomplete (signal lost)	94 km
2026-09-07 22:31 UTC	N851MB	WBU → GXY Boulder → Greeley	N851MB	AEROSPATIALE AS-350 Ecureuil	Completed	70 km
2026-09-07 20:23 UTC	N851MB	WBU → WBU Boulder → Boulder	N851MB	AEROSPATIALE AS-350 Ecureuil	Completed	4 km