# NTSB DCA68A0003: Boeing 727, N7425U, Chicago, IL, March 21, 1968

- Type: NTSB accident investigation
- Classification: Accident · Serious injuries · Closed
- Date: March 21, 1968
- 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: [Takeoff](https://openairdocs.org/ntsb-phases/300) (OpenAirDocs' grouping)
- Highest injury: Serious injuries
- Injuries: 1 serious, 2 minor
- Status: Completed, report February 19, 1969
- Report: Brief approved by the director
- Safety recommendations: Yes
- NTSB case key (mKey): 79483
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=DCA68A0003
- Page: https://openairdocs.org/ntsb/DCA68A0003

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
1-0023  68/3/21    CHICAGO,ILL         BOEING 727          CR-  0  1  2  SCHED DOM CARGO SRV       AIRLINE TRANSPORT, AGE
        TIME - 0353                    N7425U              PX-  0  0  0                            40, 10500 TOTAL HOURS,
                                       DAMAGE-DESTROYED    OT-  0  0  0                            1033 IN TYPE, INSTRUMENT
                                                                                                   RATED.
        NAME OF AIRPORT - OHARE INTL
        OPERATOR - UNITED AIR LINES,INC.
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           COLLIDED WITH: DITCHES                                   TAKEOFF: ABORTED
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - DELAYED ACTION IN ABORTING TAKEOFF
        FACTOR(S)
           COPILOT - MISUSED OR FAILED TO USE FLAPS
         FIRE AFTER IMPACT
        REMARKS- CO PLT SET FLAPS 2 DEG,VICE 5 DEG.ARMED T/O WRNG HORN SOUNDED.PLT CONT T/O,ABORTED AFTER LIFTOFF.
```

## Aircraft

- Registration: [N7425U](https://openairdocs.org/deregistered/N7425U-1970-11-23), registration cancelled 1970-11-23, S/N 19200 (OpenAirDocs)
- Reported make and model: BOEING 727
- Registry model: [Boeing 727-22C](https://openairdocs.org/model/boeing-727-22c) (registry code 138400F) (OpenAirDocs)
- Category: Airplane
- Engines: turbo fan
- Damage: Destroyed
- Airport: Ohare Intl

## Other investigations on N7425U (1)

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.

- [NTSB CHI68I0003](https://openairdocs.org/ntsb/CHI68I0003), Jul 2, 1967: Boeing 727 (N7425U), Chicago, IL, incident, substantial damage

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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