# NTSB CHI75IC013: Boeing 727, N1643, Chicago, IL, August 3, 1974

- Type: NTSB incident investigation
- Classification: Incident · No injuries · Closed
- Date: August 3, 1974
- 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: [Unknown](https://openairdocs.org/ntsb-phases/990) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 62 uninjured
- Status: Completed, report August 26, 1973
- Report: Brief approved by the director
- NTSB case key (mKey): 140554
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CHI75IC013
- Page: https://openairdocs.org/ntsb/CHI75IC013

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
4-0014   74/8/3    CHICAGO,ILL         BOEING 727          CR-  0  0  6  SCHED DOM PASSG SRV       AIRLINE TRANSPORT, AGE
        TIME - 0920                    N1643               PX-  0  0 56                            UNK/NR, UNK/NR TOTAL
                                       DAMAGE-NONE         OT-  0  0  0                            HOURS, UNK/NR IN TYPE,
                                                                                                   INSTRUMENT RATED.
        CLASSIFIED AS INCIDENT
        NAME OF AIRPORT - OHARE INTL
        OPERATOR - DELTA AIR LINES,INC.
        DEPARTURE POINT             INTENDED DESTINATION
          HOUSTON,TEX                 CHICAGO,ILL
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           MISCELLANEOUS                                            UNKNOWN/NOT REPORTED
        PROBABLE CAUSE(S)
           MISCELLANEOUS - UNDETERMINED
        REMARKS- CORROSIVE CHEM LEAKAGE.EXAM RVLD RUPTURED AREA NR RIM.UN DTRMN IF PRES BUILD-UP OR DMGD CONTAINER.
```

## Aircraft

- Registration: N1643 (not matched to a registry record)
- Reported make and model: BOEING 727
- 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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