Vliegtuigongeval op 19 FEB 1985 met Boeing 747SP-09 N4522V - San Fransisco, CA, USA
ASN logo
 
 
Status:Accident investigation report completed and information captured
Datum:dinsdag 19 februari 1985
Tijd:10:16 PST
Type:Silhouette image of generic B74S model; specific model in this crash may look slightly different
Boeing 747SP-09
Luchtvaartmaatschappij:China Airlines
Registratie: N4522V
Constructienummer: 22805/564
Bouwjaar: 1982-06-10 (2 years 9 months)
Aantal vlieguren:10192
Motoren: 4 Pratt & Whitney JT9D-7A
Bemanning:slachtoffers: 0 / inzittenden: 23
Passagiers:slachtoffers: 0 / inzittenden: 251
Totaal:slachtoffers: 0 / inzittenden: 274
Schade: Groot
Gevolgen: Repaired
Plaats:550 km (343.8 mijl) NW van San Fransisco, CA, USA (   Grote Oceaan)
Fase: Kruisvlucht (ENR)
Soort vlucht:Internationale lijnvlucht
Vliegveld van vertrek:Taipei-Chiang Kai Shek International Airport (TPE/RCTP), Taiwan
Vliegveld van aankomst:Los Angeles International Airport, CA (LAX/KLAX), Verenigde Staten
Vluchtnummer: 006
Beschrijving:
The flight from Taipei to about 300 nmi northwest of San Francisco was uneventful and the airplane was flying at about 41,000 feet mean sea level when the No. 4 engine lost power. During the attempt to recover and restore normal power on the No. 4 engine, the airplane rolled to the right, nosed over, and entered an uncontrollable descent. The captain was unable to restore the airplane to stable flight until it had descended to 9,500 feet. After the captain stabilized the airplane, he elected to divert to San Francisco International Airport, where a safe landing was made. Although the airplane suffered major structural damage during the upset, descent, and subsequent recovery, only two persons among the 274 passengers and crew on board were injured seriously.
The maximum vertical acceleration forces recorded during the descent were 4.8Gs and 5.1Gs as the airplane descended through 30,552 feet and 19,083 feet, respectively.

Probable Cause:

PROBABLE CAUSE: "The captain’s preoccupation with an inflight malfunction and his failure to monitor properly the airplane’s flight instruments which resulted in his losing control of the airplane. Contributing to the accident was the captain’s over-reliance on the autopilot after the loss of thrust on the no. 4 engine."

Accident investigation:

cover
Investigating agency: NTSB
Status: Investigation completed
Duration: 1 year and 1 months
Accident number: NTSB/AAR-86/03
Download report: Final report

Bronnen:
» NTSB/AAR-86/03


Foto's

photo of Boeing-747SP-09-N4522V
accident date: 19-02-1985
type: Boeing 747SP-09
registration: N4522V
photo of Boeing-747SP-09-N4522V
 
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

Share

The Aviation Safety Network is an exclusive service provided by:
Quick Links:

CONNECT WITH US: FSF on social media FSF Facebook FSF Twitter FSF Youtube FSF LinkedIn FSF Instagram

©2024 Flight Safety Foundation

1920 Ballenger Av, 4th Fl.
Alexandria, Virginia 22314
www.FlightSafety.org