# NTSB CHI78DEE55: Semco AX7, N35996, Mchenry, IL, June 24, 1978

- Type: NTSB accident investigation
- Classification: Accident · Serious injuries · Closed
- Date: June 24, 1978
- Place: Mchenry, IL · MCHENRY, IL
- Location: 42.3363° N, 88.2915° W: Placed by OpenAirDocs: center of McHenry, IL, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=42.3363&lon=-88.2915&mi=10
- Phase of flight: [Approach](https://openairdocs.org/ntsb-phases/500) (OpenAirDocs' grouping)
- Highest injury: Serious injuries
- Injuries: 1 serious, 1 minor
- Status: Completed, report February 12, 1979
- Report: Brief approved by the director
- NTSB case key (mKey): 140410
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CHI78DEE55
- Page: https://openairdocs.org/ntsb/CHI78DEE55

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-3771  78/6/24    MCHENRY,IL          SEMCO AX7           CR-  0  1  0  NONCOMMERCIAL             COMMERCIAL, FL.INSTR.,
        TIME - 0830                    N35996              PX-  0  0  1  PLEASURE/PERSONAL TRANSP  AGE 30, 113 TOTAL HOURS,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            ALL IN TYPE, NOT
                                                                                                   INSTRUMENT RATED.
        DEPARTURE POINT             INTENDED DESTINATION
          FOX RIVER GROVE,IL          LOCAL
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           COLLIDED WITH: WIRES/POLES                               LANDING: GO-AROUND
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - DELAYED IN INITIATING GO-AROUND
        FACTOR(S)
           TERRAIN - HIGH OBSTRUCTIONS
```

## Aircraft

- Registration: [N35996](https://openairdocs.org/deregistered/N35996-2012-06-04), registration cancelled 2012-06-04, S/N SEM157, built 1975 (OpenAirDocs)
- Reported make and model: SEMCO AX7
- Registry model: [Semco Balloon CHALLENGER](https://openairdocs.org/model/semco-balloon-challenger) (registry code 8070802) (OpenAirDocs)
- Registry engine: [NONE](https://openairdocs.org/engine/none) (registry code 00000, none) (OpenAirDocs)
- Category: Balloon
- Engines: none
- Damage: Substantial damage

## FAA reports on this event (1)

The FAA's own accident and incident reports, matched to the aircraft by N-number and date (OpenAirDocs).

- [Accident 19780624033719A](https://openairdocs.org/incident/19780624033719A), Jun 24, 1978: Semco CHALLENGER, Mchenry, IL, 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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