# NTSB MKC80FCQ19: Benchmark 01, N79FG, Newton, KS, June 8, 1980

- Type: NTSB accident investigation
- Classification: Accident · Fatal · Closed
- Date: June 8, 1980
- Place: Newton, KS · NEWTON, KS
- Location: 38.0377° N, 97.3450° W: Placed by OpenAirDocs: center of Newton, KS, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=38.0377&lon=-97.3450&mi=10
- Phase of flight: [Initial climb](https://openairdocs.org/ntsb-phases/350) (OpenAirDocs' grouping)
- Highest injury: Fatal
- Injuries: 1 fatal
- Status: Completed, report July 8, 1980
- Report: Brief approved by the director
- NTSB case key (mKey): 130827
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=MKC80FCQ19
- Page: https://openairdocs.org/ntsb/MKC80FCQ19

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-1193   80/6/8    NEWTON,KS           BENCHMARK 01        CR-  1  0  0  MISCELLANEOUS             COMMERCIAL, AGE UNK/NR,
        TIME - 1620                    N79FG               PX-  0  0  0  TEST                      3704 TOTAL HOURS, 0 IN
                                       DAMAGE-DESTROYED    OT-  0  0  0                            TYPE, INSTRUMENT RATED.
        NAME OF AIRPORT - NEWTON MUNICIPAL
        DEPARTURE POINT             INTENDED DESTINATION
          NEWTON,KS                   LOCAL
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           AIRFRAME FAILURE: IN FLIGHT                              TAKEOFF: INITIAL CLIMB
        PROBABLE CAUSE(S)
           MISCELLANEOUS - UNDETERMINED
        FACTOR(S)
           AIRFRAME - WINGS: WING ATTACHMENT FITTINGS,BOLTS
           MISCELLANEOUS ACTS,CONDITIONS - OVERLOAD FAILURE
           MISCELLANEOUS ACTS,CONDITIONS - SEPARATION IN FLIGHT
         FIRE AFTER IMPACT
        REMARKS- INITIAL TEST FLT.SEVERE PITCH OSCILLATIONS OCCURRED AFTR TKOF.REAR WING SEPD.
```

## Aircraft

- Registration: [N79FG](https://openairdocs.org/deregistered/N79FG-1983-04-08), registration cancelled 1983-04-08, S/N 01 (OpenAirDocs)
- Reported make and model: BENCHMARK 01
- Registry model: [Matthias WM L BENCHMARK](https://openairdocs.org/model/matthias-wm-l-benchmark) (registry code 0564698) (OpenAirDocs)
- Category: Airplane, amateur-built
- Engines: reciprocating
- Damage: Destroyed
- Airport: Newton Municipal

## 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 19800608017979A](https://openairdocs.org/incident/19800608017979A), Jun 8, 1980: Amtr BENCHMARK, Newton, KS, Destroyed. Performed abrupt pull-ups & dives at a low altitude on test flight of new airplane. Exceeded laod limits. Broke up.

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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