ASN logo
Last updated: 17 January 2022
Datum:vrijdag 14 november 2003
Type:Silhouette image of generic B744 model; specific model in this crash may look slightly different
Boeing 747-422
Luchtvaartmaatschappij:United Airlines
Registratie: N178UA
Constructienummer: 24385/820
Bouwjaar: 1990-10-23 (13 years )
Aantal vlieguren:57337
Motoren: 4 Pratt & Whitney PW4056
Bemanning:slachtoffers: 0 / inzittenden: 21
Passagiers:slachtoffers: 0 / inzittenden: 335
Totaal:slachtoffers: 0 / inzittenden: 356
Schade: Groot
Gevolgen: Repaired
Plaats:San Francisco International Airport, CA (SFO) (   Verenigde Staten)
Fase: Start (TOF)
Soort vlucht:Internationale lijnvlucht
Vliegveld van vertrek:San Francisco International Airport, CA (SFO/KSFO), Verenigde Staten
Vliegveld van aankomst:Hong Kong-Chek Lap Kok International Airport (HKG/VHHH), Hong Kong
United Airlines Flight 805, a Boeing 747-422, N178UA, experienced a tail strike on rotation at San Francisco, California, USA.
The first officer was the Pilot Flying (PF), and the airplane departed on runway 10L. The winds were 180 at 16, gusting to 22 knots. The takeoff roll was normal, and the PF utilized control wheel input to correct for the crosswind. A few seconds after rotation, the PF noted the stick shaker annunciate, and responded by gently easing back pressure off the control yoke. The captain and a relief pilot felt a nose wheel vibration following the takeoff.
The air traffic control tower contacted the flight crew alerting them of a possible tail strike after observing smoke from the airplane at rotation. The crew returned to land at San Francisco. Evaluation of the damage resulted in structural repair to two structural members.

Probable Cause:

A tail strike due to a combination of the wind shifting from a headwind to a tailwind during rotation, and the pilot's control inputs for the crosswind condition.

Accident investigation:
Investigating agency: NTSB
Status: Investigation completed
Duration: 3 years and 5 months
Accident number: LAX04LA050
Download report: Final report


Add your photo of this accident or aircraft

Deze kaart geeft het vliegveld van vetrek weer en de geplande bestemming van de vlucht. De lijn tussen de vliegvelden geeft niet de exacte vliegroute weer.
De afstand tussen San Francisco International Airport, CA en Hong Kong-Chek Lap Kok International Airport bedraagt 11053 km (6908 miles).

This information is not presented as the Flight Safety Foundation or the Aviation Safety Network’s opinion as to the cause of the accident. It is preliminary and is based on the facts as they are known at this time.
languages: languages