# NTSB DCA73AZ004: Convair 880, N8807E, Chicago, IL, December 20, 1972 - Type: NTSB accident investigation - Classification: Accident · Fatal · Closed - Date: December 20, 1972 - Place: Chicago, IL · CHICAGO, IL - Location: 41.8500° N, 87.6501° W: Placed by OpenAirDocs: center of Chicago, IL, within about 9 miles (OpenAirDocs) - Nearby events: https://openairdocs.org/map.md?lat=41.8500&lon=-87.6501&mi=10 - Phase of flight: [Taxi](https://openairdocs.org/ntsb-phases/250) (OpenAirDocs' grouping) - Highest injury: Fatal - Injuries: 10 fatal, 9 serious, 7 minor, 112 uninjured - Status: Completed, report October 11, 1973 - Report: Brief approved by the director - Safety recommendations: Yes - NTSB case key (mKey): 81275 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=DCA73AZ004 - Page: https://openairdocs.org/ntsb/DCA73AZ004 ## NTSB brief (aircraft 2) ``` ----------------------------------------------------------------------------------------------------------------------------  FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA                                                                F  S M/N     PURPOSE ---------------------------------------------------------------------------------------------------------------------------- 1-0017  72/12/20   CHICAGO,ILL         DOUGLAS DC-9        CR-  0  0  4  SCHED DOM PASSG SRV       AIRLINE TRANSPORT, AGE         TIME - 1800                    N954N               PX- 10  9 22                            49, 20261 TOTAL HOURS,                                        DAMAGE-DESTROYED    OT-  0  0 93                            3455 IN TYPE, INSTRUMENT                                                                                                    RATED.         NAME OF AIRPORT - OHARE         OPERATOR - NORTH CENTRAL AIRLINES,INC.         DEPARTURE POINT             INTENDED DESTINATION         LAST ENROUTE STOP           CHICAGO,ILL                 DULUTH,MINN                  MADISON,WIS         TYPE OF ACCIDENT                                         PHASE OF OPERATION            COLLISION WITH AIRCRAFT: ONE AIRBORNE                    TAKEOFF: INITIAL CLIMB         PROBABLE CAUSE(S)            PERSONNEL - TRAFFIC CONTROL PERSONNEL: OTHER            PERSONNEL - MISCELLANEOUS-PERSONNEL: PILOT OF OTHER AIRCRAFT         FACTOR(S)            WEATHER - LOW CEILING            WEATHER - FOG         WEATHER BRIEFING - COMPANY DISPATCH         WEATHER FORECAST - FORECAST SUBSTANTIALLY CORRECT         SKY CONDITION                                            CEILING AT ACCIDENT SITE           OBSCURATION                                               200         VISIBILITY AT ACCIDENT SITE                              PRECIPITATION AT ACCIDENT SITE           1/4 MILE OR LESS                                         NONE         OBSTRUCTIONS TO VISION AT ACCIDENT SITE                  TYPE OF WEATHER CONDITIONS           FOG                                                      IFR         TYPE OF FLIGHT PLAN           IFR          FIRE AFTER IMPACT         REMARKS- ATC SYS DIDNT PROVIDE SEPARATION.CTLR INSTRUCTIONS AMBIGUOUS.CLARIFICATION NOT REQ BY CV-880 CREW. ``` ## NTSB brief (aircraft 1) ``` ----------------------------------------------------------------------------------------------------------------------------  FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA                                                                F  S M/N     PURPOSE ---------------------------------------------------------------------------------------------------------------------------- 1-0017  72/12/20   CHICAGO,ILL         CONVAIR 880         CR-  0  0  7  SCHED DOM PASSG SRV       AIRLINE TRANSPORT, AGE         TIME - 1800                    N8807E              PX-  0  0 86                            36, 5500 TOTAL HOURS,                                        DAMAGE-SUBSTANTIAL  OT- 10  9 26                            2400 IN TYPE, INSTRUMENT                                                                                                    RATED.         NAME OF AIRPORT - OHARE         OPERATOR - DELTA AIR LINES,INC.         DEPARTURE POINT             INTENDED DESTINATION           TAMPA,FLA                   CHICAGO,ILL         TYPE OF ACCIDENT                                         PHASE OF OPERATION            COLLISION WITH AIRCRAFT: ONE AIRBORNE                    TAXI: FROM LANDING         PROBABLE CAUSE(S)            PERSONNEL - TRAFFIC CONTROL PERSONNEL: OTHER            PILOT IN COMMAND - FAILED TO FOLLOW APPROVED PROCEDURES,DIRECTIVES,ETC.            PILOT IN COMMAND - MISUNDERSTANDING OF ORDERS OR INSTRUCTIONS         FACTOR(S)            WEATHER - LOW CEILING            WEATHER - FOG         WEATHER BRIEFING - RECIEVED RECORDED BRIEFING BY LFMF RADIO         WEATHER FORECAST - FORECAST SUBSTANTIALLY CORRECT         SKY CONDITION                                            CEILING AT ACCIDENT SITE           OBSCURATION                                               200         VISIBILITY AT ACCIDENT SITE                              PRECIPITATION AT ACCIDENT SITE           1/4 MILE OR LESS                                         NONE         OBSTRUCTIONS TO VISION AT ACCIDENT SITE                  TYPE OF WEATHER CONDITIONS           FOG                                                      IFR         TYPE OF FLIGHT PLAN           IFR         REMARKS- CTLR DIDNT USE ALL AVAIL INFO TO DETERMINE LOCATION OF CV-880. ``` ## Aircraft 1 - Registration: [N8807E](https://openairdocs.org/deregistered/N8807E-1973-05-24), registration cancelled 1973-05-24, S/N 29 (OpenAirDocs) - Reported make and model: CONVAIR 880 - Registry model: [Convair 22](https://openairdocs.org/model/convair-22) (registry code 2423302) (OpenAirDocs) - Category: Airplane - Engines: turbo jet - Damage: Substantial damage - Airport: Ohare ## Aircraft 2 - Registration: [N954N](https://openairdocs.org/deregistered/N954N-1974-04-25), registration cancelled 1974-04-25, S/N 47159 (OpenAirDocs) - Reported make and model: DOUGLAS DC-9 - Registry model: [Douglas DC-9-31](https://openairdocs.org/model/douglas-dc-9-31) (registry code 3022065) (OpenAirDocs) - Category: Airplane - Engines: turbo fan - Damage: Destroyed - Airport: Ohare From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model. --- OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.