# NTSB CHI76AC003: Grum Amer AA-5, N5875L, Hammond, WI, July 19, 1975

- Type: NTSB accident investigation
- Classification: Accident · Fatal · Closed
- Date: July 19, 1975
- Place: Hammond, WI · HAMMOND, WI
- Location: 44.9690° N, 92.4381° W: Placed by OpenAirDocs: center of Hammond, WI, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=44.9690&lon=-92.4381&mi=10
- Phase of flight: [Maneuvering](https://openairdocs.org/ntsb-phases/450) (OpenAirDocs' grouping)
- Highest injury: Fatal
- Injuries: 4 fatal
- Status: Completed, report September 17, 1975
- Report: Brief approved by the director
- NTSB case key (mKey): 150491
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CHI76AC003
- Page: https://openairdocs.org/ntsb/CHI76AC003

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-3639  75/7/19    HAMMOND,WI          GRUM AMER AA-5      CR-  1  0  0  NONCOMMERCIAL             PRIVATE, AGE 23, 98 TOTAL
        TIME - 2033                    N5875L              PX-  3  0  0  PLEASURE/PERSONAL TRANSP  HOURS, 4 IN TYPE, NOT
                                       DAMAGE-DESTROYED    OT-  0  0  0                            INSTRUMENT RATED.
        DEPARTURE POINT             INTENDED DESTINATION
          LAKE ELMO,MN                LOCAL
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           STALL: SPIN                                              IN FLIGHT: ACROBATICS
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - FAILED TO OBTAIN/MAINTAIN FLYING SPEED
        FACTOR(S)
           PILOT IN COMMAND - IMPROPER OPERATION OF FLIGHT CONTROLS
           PILOT IN COMMAND - LACK OF FAMILIARITY WITH AIRCRAFT
         FIRE AFTER IMPACT
        REMARKS- ACFT OBSVD CRUISING ABT 100-150FT AGL THEN NEARLY COMPLETED A LOOP BFR SPIN.
```

## Aircraft

- Registration: [N5875L](https://openairdocs.org/deregistered/N5875L-1975-10-20), registration cancelled 1975-10-20, S/N AA5-0275 (OpenAirDocs)
- Reported make and model: GRUM AMER AA-5
- Registry model: [Grumman American Avn. AA-5](https://openairdocs.org/model/grumman-american-avn-aa-5) (registry code 3960104) (OpenAirDocs)
- Category: Airplane
- Engines: reciprocating
- Damage: Destroyed

## 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 19750719028179A](https://openairdocs.org/incident/19750719028179A), Jul 19, 1975: Grumav AA5, Hammond, WI, Destroyed, 3 fatal. Acft obsvd cruising abt 100-150FT AGL then nearly completed a loop bfr spin.

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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