# NTSB MKC72DCG60: Grant GB-1, N30090, Lamonte, MO, June 4, 1972

- Type: NTSB accident investigation
- Classification: Accident · Serious injuries · Closed
- Date: June 4, 1972
- Place: Lamonte, MO · LAMONTE, MO
- Location: 38.7717° N, 93.4239° W: Placed by OpenAirDocs: center of La Monte, MO, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=38.7717&lon=-93.4239&mi=10
- Phase of flight: [Initial climb](https://openairdocs.org/ntsb-phases/350) (OpenAirDocs' grouping)
- Highest injury: Serious injuries
- Injuries: 1 serious
- Status: Completed, report October 19, 1972
- Report: Brief approved by the director
- NTSB case key (mKey): 166730
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=MKC72DCG60
- Page: https://openairdocs.org/ntsb/MKC72DCG60

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-0465   72/6/4    LAMONTE,MO          GRANT GB-1          CR-  0  1  0  INSTRUCTIONAL             STUDENT, AGE 41, 6474
        TIME - 1030                    N30090              PX-  0  0  0  TRAINING                  TOTAL HOURS, 7 IN TYPE,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            NOT INSTRUMENT RATED.
        NAME OF AIRPORT - KEELE FARM
        DEPARTURE POINT             INTENDED DESTINATION
          LAMONTE,MO                  LOCAL
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           PROPELLER/ROTOR FAILURE: MAIN ROTOR                      TAKEOFF: INITIAL CLIMB
           ROLL OVER                                                LANDING: ROLL
        PROBABLE CAUSE(S)
           ROTORCRAFT - ROTOR ASSEMBLIES: MAIN ROTOR BLADES
           MISCELLANEOUS ACTS,CONDITIONS - IMPROPER ALIGNMENT/ADJUSTMENT
           MISCELLANEOUS ACTS,CONDITIONS - VIBRATION,EXCESSIVE
           PERSONNEL - MAINTENANCE,SERVICING,INSPECTION: IMPROPER MAINTENANCE (OWNER PERSONNEL)
           TERRAIN - WET,SOFT GROUND
        EMERGENCY CIRCUMSTANCES - FORCED LANDING OFF AIRPORT ON LAND
        REMARKS- TOOK OFF TO CK ROTOR BEAT AFTER ADJUSTMENT. PLT WAS MILITARY RATED.
```

## Aircraft

- Registration: [N30090](https://openairdocs.org/deregistered/N30090-2023-07-29), registration cancelled 2023-07-29, S/N G-001, built 1967 (OpenAirDocs)
- Reported make and model: GRANT GB-1
- Registry model: [Grant-Bensen GB-1](https://openairdocs.org/model/grant-bensen-gb-1) (registry code 130073Q) (OpenAirDocs)
- Registry engine: [Mcculloch 4318A&E/0-100](https://openairdocs.org/engine/mcculloch-4318a-e-0-100) (registry code 43101, reciprocating) (OpenAirDocs)
- Category: Gyroplane
- Engines: reciprocating
- Damage: Substantial damage
- Airport: Keele Farm

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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