# NTSB CHI79IA015: Boeing 747, N4710U, Chicago, IL, November 7, 1978

- Type: NTSB incident investigation
- Classification: Incident · No injuries · Closed
- Date: November 7, 1978
- 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: No injuries
- Injuries: 246 uninjured
- Status: Completed, report January 10, 1979
- Report: Brief approved by the director
- NTSB case key (mKey): 138162
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CHI79IA015
- Page: https://openairdocs.org/ntsb/CHI79IA015

## NTSB brief (aircraft 2)

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
4-0021   78/11/7   CHICAGO,IL          BOEING 727          CR-  0  0  7  SCHED DOM PASSG SRV       AIRLINE TRANSPORT, AGE
        TIME - 2024                    N6825               PX-  0  0 77                            39, 7600 TOTAL HOURS, 500
                                       DAMAGE-MINOR        OT-  0  0162                            IN TYPE, INSTRUMENT
                                                                                                   RATED.
        CLASSIFIED AS INCIDENT
        NAME OF AIRPORT - OHARE INTL
        OPERATOR - AMERICAN AIRLINES,INC.
        DEPARTURE POINT             INTENDED DESTINATION
         UNKNOWN/NOT REPORTED         CHICAGO,IL
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           COLLISION WITH AIRCRAFT: BOTH ON GROUND                  TAXI: FROM LANDING
        PROBABLE CAUSE(S)
           PERSONNEL - MISCELLANEOUS-PERSONNEL: PILOT OF OTHER AIRCRAFT
```

## NTSB brief (aircraft 1)

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
4-0021   78/11/7   CHICAGO,IL          BOEING 747          CR-  0  0 11  SCHED DOM PASSG SRV       AIRLINE TRANSPORT, AGE
        TIME - 2024                    N4710U              PX-  0  0151                            57, 24503 TOTAL HOURS,
                                       DAMAGE-MINOR        OT-  0  0 84                            1343 IN TYPE, INSTRUMENT
                                                                                                   RATED.
        CLASSIFIED AS INCIDENT
        NAME OF AIRPORT - OHARE INTL
        OPERATOR - UNITED AIR LINES,INC.
        DEPARTURE POINT             INTENDED DESTINATION         LAST ENROUTE STOP
          SAN FRANCISCO,CA            NEWARK,NJ                    CHICAGO,IL
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           COLLISION WITH AIRCRAFT: BOTH ON GROUND                  TAXI: TO TAKEOFF
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - MISJUDGED CLEARANCE
        REMARKS- DARK NIGHT.
```

## Aircraft 1

- Registration: N4710U (not matched to a registry record)
- Reported make and model: BOEING 747
- Category: Airplane
- Engines: turbo fan
- Damage: Minor damage
- Airport: Ohare Intl

## Aircraft 2

- Registration: N6825 (not matched to a registry record)
- Reported make and model: BOEING 727
- Category: Airplane
- Engines: turbo fan
- Damage: Minor damage
- Airport: Ohare Intl

## FAA reports on this event (2)

The FAA's own accident and incident reports, matched to the aircraft by N-number and date (OpenAirDocs).

- [Incident 19781107023041I](https://openairdocs.org/incident/19781107023041I), Nov 7, 1978: Boeing 747/, Chicago, IL, Minor damage. Wingtip of N4710U struck rudder of N6825 while taxiing to runway.
- [Incident 19781107023042I](https://openairdocs.org/incident/19781107023042I), Nov 7, 1978: Boeing 727, Chicago, IL, Minor damage. Rudder of N6825 was struck by wingtip of N4710U as it taxiied to runway.

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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