# NTSB CHI73AC064: Boeing 707, N8436, Elk Grv Vllg, IL, January 20, 1973

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: January 20, 1973
- Place: Elk Grv Vllg, IL · ELK GRV VLLG, IL
- Location: 42.0050° N, 87.9920° W: Placed by OpenAirDocs: center of Elk Grove Village, IL, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=42.0050&lon=-87.9920&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 72 uninjured
- Status: Completed, report April 5, 1973
- Report: Brief approved by the director
- NTSB case key (mKey): 169608
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CHI73AC064
- Page: https://openairdocs.org/ntsb/CHI73AC064

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
1-0001  73/1/20    ELK GRV VLLG,ILL    BOEING 707          CR-  0  0  8  SCHED DOM PASSG SRV       AIRLINE TRANSPORT, AGE
        TIME - 0933                    N8436               PX-  0  0 64                            57, 24061 TOTAL HOURS,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            8000 IN TYPE, INSTRUMENT
                                                                                                   RATED.
        OPERATOR - AMERICAN AIRLINES,INC.
        DEPARTURE POINT             INTENDED DESTINATION
          CHICAGO,ILL                 HONOLULU,HAWAII
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           ENGINE FAILURE OR MALFUNCTION                            IN FLIGHT: CLIMB TO CRUISE
           MISCELLANEOUS                                            IN FLIGHT: CLIMB TO CRUISE
        PROBABLE CAUSE(S)
           POWERPLANT - TURBINE ASSEMBLY: RETENTION,GUIDE VANE
           MISCELLANEOUS ACTS,CONDITIONS - FATIGUE FRACTURE
           MISCELLANEOUS - FOREIGN OBJECT DAMAGE
        FACTOR(S)
           MISCELLANEOUS ACTS,CONDITIONS - SEPARATION IN FLIGHT
        COMPLETE POWER LOSS - COMPLETE ENGINE FAILURE/FLAMEOUT-1 ENGINE
        REMARKS- FRETTING-3RD STAGE NOZZLE VANE RETAINING LUGS,NR4 ENG.STRUCT WING DMG FRM SEPD TURBINE ASSY.
```

## Aircraft

- Registration: N8436 (not matched to a registry record)
- Reported make and model: BOEING 707
- Category: Airplane
- Engines: turbo jet
- Damage: Substantial damage
- Airport: O'Hare 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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