- Date
- March 31, 1971
- Place
- Ontario, CA · ONTARIO, CA
- Injuries
- 5 fatal
- Damage
- Destroyed
- Phase of flight
- Approach
- Aircraft
- N3166Boeing 720
- Status
- Completed · report September 15, 1972
- Safety recommendations
- Yes
- Case key
- 79478
From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.
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 ---------------------------------------------------------------------------------------------------------------------------- 1-0002 71/3/31 ONTARIO,CALIF BOEING 720 CR- 5 0 0 TRAINING AIRLINE TRANSPORT, AGE TIME - 0633 N3166 PX- 0 0 0 49, 19714 TOTAL HOURS, DAMAGE-DESTROYED OT- 0 0 0 3780 IN TYPE, INSTRUMENT RATED. NAME OF AIRPORT - ONTARIO INTL OPERATOR - WESTERN AIR LINES,INC. DEPARTURE POINT INTENDED DESTINATION LOS ANGELES,CALIF LOS ANGELES,CALIF TYPE OF ACCIDENT PHASE OF OPERATION COLLISION WITH GROUND/WATER: UNCONTROLLED LANDING: MISSED APPROACH PROBABLE CAUSE(S) SYSTEMS - FLIGHT CONTROL SYSTEMS: RUDDER AND RUDDER TAB CONTROL SYSTEM MISCELLANEOUS ACTS,CONDITIONS - MATERIAL FAILURE FACTOR(S) MISCELLANEOUS ACTS,CONDITIONS - SIMULATED CONDITIONS WEATHER - OBSTRUCTIONS TO VISION WEATHER - FOG WEATHER BRIEFING - COMPANY DISPATCH WEATHER FORECAST - FORECAST SUBSTANTIALLY CORRECT SKY CONDITION CEILING AT ACCIDENT SITE OVERCAST 600 VISIBILITY AT ACCIDENT SITE PRECIPITATION AT ACCIDENT SITE 3/4 MILE OR LESS NONE OBSTRUCTIONS TO VISION AT ACCIDENT SITE TEMPERATURE-F FOG 51 WIND DIRECTION-DEGREES WIND VELOCITY-KNOTS 250 4 TYPE OF WEATHER CONDITIONS TYPE OF FLIGHT PLAN IFR IFR FIRE AFTER IMPACT REMARKS- RUDDER HYDRAULIC ACTUATOR SUPPORT FITTING,STRESS CORROSION CRACKS.SIM 3-ENG MISSED APCH.
Aircraft
- Registration
- N3166
- Reported as
- Boeing 720
- Category
- Airplane
- Engine
- turbo fan
- Damage
- Destroyed
- Airport
- Ontario Intl
Matched to the registry by N-number and the event date; the registry’s history has gaps, so older matches can be wrong. Compare the reported make and model.