# NTSB CHI70AC074: Cessna 336, N3815U, Chicago, IL, April 28, 1970

- Type: NTSB accident investigation
- Classification: Accident · Fatal · Closed
- Date: April 28, 1970
- 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: [Uncontrolled descent](https://openairdocs.org/ntsb-phases/650) (OpenAirDocs' grouping)
- Highest injury: Fatal
- Injuries: 2 fatal
- Status: Completed, report August 10, 1970
- Report: Brief approved by the director
- NTSB case key (mKey): 135185
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CHI70AC074
- Page: https://openairdocs.org/ntsb/CHI70AC074

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-0665  70/4/28    CHICAGO,ILL         CESSNA 336          CR-  2  0  0  NONCOMMERCIAL             COMMERCIAL, AGE 24, 834
        TIME - 1626                    N3815U              PX-  0  0  0  BUSINESS                  TOTAL HOURS, UNK/NR IN
                                       DAMAGE-DESTROYED    OT-  0  0  0                            TYPE, INSTRUMENT RATED.
        NAME OF AIRPORT - MEIGS FIELD
        DEPARTURE POINT             INTENDED DESTINATION
          MEIGS FIELD                 MIDWAY ARPT
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           COLLISION WITH GROUND/WATER: UNCONTROLLED                IN FLIGHT: UNCONTROLLED DESCENT
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - IMPROPER IFR OPERATION
           PILOT IN COMMAND - SPATIAL DISORIENTATION
        FACTOR(S)
           PILOT IN COMMAND - ATTEMPTED OPERATION BEYOND EXPERIENCE/ABILITY LEVEL
           MISCELLANEOUS ACTS,CONDITIONS - AIRCRAFT CAME TO REST IN WATER
           WEATHER - LOW CEILING
           WEATHER - FOG
        WEATHER BRIEFING - BRIEFED BY FLIGHT SERVICE PERSONNEL, BY RADIO
        WEATHER FORECAST - WEATHER SLIGHTLY WORSE THAN FORECAST
        SKY CONDITION                                            CEILING AT ACCIDENT SITE
          OBSCURATION                                               500
        VISIBILITY AT ACCIDENT SITE                              PRECIPITATION AT ACCIDENT SITE
          1/4 MILE OR LESS                                         NONE
        OBSTRUCTIONS TO VISION AT ACCIDENT SITE                  TEMPERATURE-F
          FOG                                                       56
        WIND DIRECTION-DEGREES                                   WIND VELOCITY-KNOTS
           20                                                       7
        TYPE OF WEATHER CONDITIONS                               TYPE OF FLIGHT PLAN
          IFR                                                      IFR
        REMARKS- CRASHED INTO LAKE SHORTLY AFTER T/O.SANK IN APRX 29 FT OF WATER.8.8 HRS TOTAL ACTUAL INST TIME.
```

## Aircraft

- Registration: [N3815U](https://openairdocs.org/deregistered/N3815U-1972-01-21), registration cancelled 1972-01-21, S/N 3360115 (OpenAirDocs)
- Reported make and model: CESSNA 336
- Registry model: [Cessna 336](https://openairdocs.org/model/cessna-336) (registry code 2075602) (OpenAirDocs)
- Category: Airplane
- Engines: reciprocating
- Damage: Destroyed
- Airport: Meigs Field

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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