- Date
- September 2, 1971
- Place
- Seattle, WA · SEATTLE, WA
- Injuries
- 189 uninjured
- Damage
- Minor damage
- Phase of flight
- Approach
- Aircraft
- N606USBoeing 747
- Status
- Completed · report August 16, 1972
- Report
- Brief approved by the director
- Case key
- 164569
From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the incident.
On this page
NTSB brief
NTSB’s brief of the accident, as it was printed: the coded facts, with the probable cause and factors.
---------------------------------------------------------------------------------------------------------------------------- FILE DATE LOCATION AIRCRAFT DATA INJURIES FLIGHT PILOT DATA F S M/N PURPOSE ---------------------------------------------------------------------------------------------------------------------------- 4-0041 71/9/2 SEATTLE,WASH BOEING 747 CR- 0 0 12 SCHED INTERNATL PASSG SRV AIRLINE TRANSPORT, AGE TIME - 1855 N606US PX- 0 0177 UNK/NR, UNK/NR TOTAL DAMAGE-MINOR OT- 0 0 0 HOURS, UNK/NR IN TYPE, INSTRUMENT RATED. CLASSIFIED AS INCIDENT NAME OF AIRPORT - SEATTLE-TACOMA OPERATOR - NORTHWEST AIRLINES,INC. DEPARTURE POINT INTENDED DESTINATION TOKYO,JAPAN SEATTLE,WASH TYPE OF ACCIDENT PHASE OF OPERATION MISCELLANEOUS LANDING: FINAL APPROACH PROBABLE CAUSE(S) SYSTEMS - FLIGHT CONTROL SYSTEMS: WING FLAP CONTROL SYSTEM HYDRAULIC MISCELLANEOUS ACTS,CONDITIONS - IMPROPERLY SECURED MISCELLANEOUS ACTS,CONDITIONS - ASYMETRICAL FLAPS REMARKS- 3 SCREWS AND SAFETY WIRE TO SECURE L FLAP DRIVE TORQUE TUBE TO NR 3 COUPLING MISSING,TIME UNDET.
Aircraft
- Registration
- N606US
- Reported as
- Boeing 747
- Category
- Airplane
- Engine
- turbo fan
- Damage
- Minor damage
- Airport
- Seattle-Tacoma