# NTSB CHI77IA051: Boeing 707, N7590A, Chicago, IL, June 22, 1977

- Type: NTSB incident investigation
- Classification: Incident · No injuries · Closed
- Date: June 22, 1977
- 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: 71 uninjured
- Status: Completed, report March 9, 1978
- Report: Brief approved by the director
- NTSB case key (mKey): 146516
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CHI77IA051
- Page: https://openairdocs.org/ntsb/CHI77IA051

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
4-0010  77/6/22    CHICAGO,IL          BOEING 707          CR-  0  0  8  SCHED INTERNATL PASSG SRV AIRLINE TRANSPORT, AGE
        TIME - 1450                    N7590A              PX-  0  0 63                            UNK/NR, UNK/NR TOTAL
                                       DAMAGE-MINOR        OT-  0  0  0                            HOURS, UNK/NR IN TYPE,
                                                                                                   INSTRUMENT RATED.
        CLASSIFIED AS INCIDENT
        NAME OF AIRPORT - OHARE
        OPERATOR - AMERICAN AIRLINES,INC.
        DEPARTURE POINT             INTENDED DESTINATION
          MEXICO CITY,MEXICO          CHICAGO,IL
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           GEAR COLLAPSED                                           TAXI: FROM LANDING
        PROBABLE CAUSE(S)
           AIRFRAME - LANDING GEAR: MAIN GEAR-SHOCK ABSORBING ASSY,STRUTS,ATTACHMENTS,ETC.
           MISCELLANEOUS ACTS,CONDITIONS - CORRODED/CORROSION
           MISCELLANEOUS ACTS,CONDITIONS - FATIGUE FRACTURE
```

## Aircraft

- Registration: [N7590A](https://openairdocs.org/deregistered/N7590A-1982-02-04), registration cancelled 1982-02-04, S/N 19340, built 1967 (OpenAirDocs)
- Reported make and model: BOEING 707
- Registry model: [Boeing 707-123B](https://openairdocs.org/model/boeing-707-123b) (registry code 138360H) (OpenAirDocs)
- Registry engine: [Pratt & Whitney JT3D-3&3B](https://openairdocs.org/engine/pratt-whitney-jt3d-3-3b) (registry code 52039, turbo-fan) (OpenAirDocs)
- Category: Airplane
- Engines: turbo fan
- Damage: Minor damage
- 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.

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