# NTSB CHI76FEE69: Sportster HA-2M, N158, Rockford, IL, July 29, 1976

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: July 29, 1976
- Place: Rockford, IL · ROCKFORD, IL
- Location: 42.2711° N, 89.0940° W: Placed by OpenAirDocs: center of Rockford, IL, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=42.2711&lon=-89.0940&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 2 uninjured
- Status: Completed, report November 24, 1976
- Report: Brief approved by the director
- NTSB case key (mKey): 155760
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CHI76FEE69
- Page: https://openairdocs.org/ntsb/CHI76FEE69

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-2973  76/7/29    ROCKFORD,IL         SPORTSTER HA-2M     CR-  0  0  1  MISCELLANEOUS             COMMERCIAL, FL.INSTR.,
        TIME - 1930                    N158                PX-  0  0  1  DEMONSTRATION             AGE 53, 5060 TOTAL HOURS,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            1 IN TYPE, NOT INSTRUMENT
                                                                                                   RATED.
        NAME OF AIRPORT - GREATER ROCKFORD
        DEPARTURE POINT             INTENDED DESTINATION
          ROCKFORD,IL                 LOCAL
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           HARD LANDING                                             LANDING: POWER-ON LANDING
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - FAILED TO MAINTAIN ADEQUATE ROTOR R.P.M.
           PILOT IN COMMAND - LACK OF FAMILIARITY WITH AIRCRAFT
        REMARKS- PLT RPTD RPM LOW.
```

## Aircraft

- Registration: [N158](https://openairdocs.org/deregistered/N158-2013-08-22), registration cancelled 2013-08-22, S/N 001, built 1976 (OpenAirDocs)
- Reported make and model: SPORTSTER HA-2M
- Registry model: [Hollmann HA-2M SPORTSTER](https://openairdocs.org/model/hollmann-ha-2m-sportster) (registry code 1302601) (OpenAirDocs)
- Registry engine: [Amateur-built UNKNOWN ENG](https://openairdocs.org/engine/amateur-built-unknown-eng) (registry code 99999) (OpenAirDocs)
- Category: Gyroplane, amateur-built
- Engines: reciprocating
- Damage: Substantial damage
- Airport: Greater Rockford

## 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 19760729023669A](https://openairdocs.org/incident/19760729023669A), Jul 29, 1976: Amtr 1302601, Rockford, IL, Substantial damage. Plt rptd RPM low.

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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