- Date
- January 23, 1965
- Place
- Chicago, IL · CHICAGO, IL
- Injuries
- 2 serious, 5 minor, 43 uninjured
- Damage
- No damage
- Phase of flight
- Enroute
- Aircraft
- N725USBoeing B-720B
- Status
- Completed
- Report
- Brief approved by the director
- Case key
- 180439
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 ---------------------------------------------------------------------------------------------------------------------------- 1-0050 65/1/23 NR.CHICAGO ILL BOEING B-720B CR- 0 0 7 SCHED DOM PASSG SRV AIRLINE TRANSPORT, AGE TIME - 1150 N725US PX- 0 2 41 51, 21893 TOTAL HOURS, DAMAGE-NONE OT- 0 0 0 2631 IN TYPE, INSTRUMENT RATED. OPERATOR - NORTHWEST AIRLINES,INC. TYPE OF ACCIDENT PHASE OF OPERATION TURBULENCE IN FLIGHT: DESCENDING PROBABLE CAUSE(S) WEATHER - TURBULENCE IN FLIGHT,CLEAR AIR WEATHER - TURBULENCE, ASSOCIATED W/CLOUDS AND/OR THUNDERSTORMS PERSONNEL - WEATHER PERSONNEL: INCORRECT WEATHER FORECAST PERSONNEL - DISPATCHING (AIR CARRIER ONLY): OTHER FACTOR(S) MISCELLANEOUS ACTS,CONDITIONS - SEAT BELT SIGN OFF MISCELLANEOUS ACTS,CONDITIONS - CIRCUIT BREAKER POPPED WEATHER BRIEFING - COMPANY DISPATCH WEATHER FORECAST - WEATHER CONSIDERABLY WORSE THAN FORECAST SKY CONDITION CEILING AT ACCIDENT SITE OVERCAST 400 VISIBILITY AT ACCIDENT SITE PRECIPITATION AT ACCIDENT SITE 2 MILES OR LESS RAIN SHOWERS, SNOW SHOWERS OBSTRUCTIONS TO VISION AT ACCIDENT SITE TEMPERATURE-F FOG 31 WIND DIRECTION-DEGREES WIND VELOCITY-KNOTS 220 141 TYPE OF WEATHER CONDITIONS TYPE OF FLIGHT PLAN IFR IFR REMARKS- SEAT BELT SIGN DID NOT STAY ON DUE TO TRIPPED CIRCUIT BREAKER-WX BUR AND CO TURBUL FRCSTS INACCUR
Aircraft
- Registration
- N725US
- Reported as
- Boeing B-720B
- Category
- Airplane
- Engine
- turbo fan
- Damage
- No damage
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.