# NTSB CHI71AC070: Boeing 727, N7892, Chicago, IL, April 1, 1971

- Type: NTSB accident investigation
- Classification: Accident · Serious injuries · Closed
- Date: April 1, 1971
- 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: [Standing](https://openairdocs.org/ntsb-phases/150) (OpenAirDocs' grouping)
- Highest injury: Serious injuries
- Injuries: 4 serious, 7 minor, 49 uninjured
- Status: Completed, report April 19, 1972
- Report: Brief approved by the director
- NTSB case key (mKey): 160331
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CHI71AC070
- Page: https://openairdocs.org/ntsb/CHI71AC070

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
1-0010   71/4/1    CHICAGO,ILL         BOEING 727          CR-  0  0  6  SCHED DOM PASSG SRV       AIRLINE TRANSPORT, AGE
        TIME - 2205                    N7892               PX-  0  4 50                            49, 14649 TOTAL HOURS,
                                       DAMAGE-NONE         OT-  0  0  0                            1651 IN TYPE, INSTRUMENT
                                                                                                   RATED.
        NAME OF AIRPORT - OHARE INTL
        OPERATOR - TRANS WORLD AIRLINES,INC.
        DEPARTURE POINT             INTENDED DESTINATION
          NEW YORK,NY                 CHICAGO,ILL
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           MISCELLANEOUS                                            STATIC: IDLING ENGINE(S)
        PROBABLE CAUSE(S)
           PERSONNEL - FLIGHT PERSONNEL
           PERSONNEL - OPERATIONAL SUPERVISORY PERSONNEL: INADEQUATE GROUND TRAINING-PROCEDURES
        REMARKS- MGT SUPVR STWS OVER-REACTED WHEN APU TORCHED.CAUSED UNWANTED EVAC.ALL STWS UNAWARE OF PROPER PROC.
```

## Aircraft

- Registration: [N7892](https://openairdocs.org/deregistered/N7892-1990-08-10), registration cancelled 1990-08-10, S/N 20114 (OpenAirDocs)
- Reported make and model: BOEING 727
- Registry model: [Boeing 727-31](https://openairdocs.org/model/boeing-727-31) (registry code 1384010) (OpenAirDocs)
- Category: Airplane
- Engines: turbo fan
- Damage: No damage
- Airport: Ohare Intl

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.

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