NTSB Identification: CHI65A0069
14 CFR Part 121 Scheduled operation of NORTHWEST AIRLINES INC
Aircraft: BOEING B-720B, registration: N725US

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 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
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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

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