# NTSB MKC69F0398: Hughes 269A, N8921F, Burnsville, MN, April 10, 1969

- Type: NTSB accident investigation
- Classification: Accident · Minor injuries · Closed
- Date: April 10, 1969
- Place: Burnsville, MN · BURNSVILLE, MN
- Location: 44.7644° N, 93.2794° W: Placed by OpenAirDocs: center of Burnsville, MN, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=44.7644&lon=-93.2794&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: Minor injuries
- Injuries: 1 minor
- Status: Completed, report June 12, 1969
- Report: Brief approved by the director
- NTSB case key (mKey): 187790
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=MKC69F0398
- Page: https://openairdocs.org/ntsb/MKC69F0398

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-0911  69/4/10    BURNSVILLE,MINN     HUGHES 269A         CR-  0  0  1  NONCOMMERCIAL             PRIVATE, AGE 41, 750
        TIME - 0900                    N8921F              PX-  0  0  0  BUSINESS                  TOTAL HOURS, ALL IN TYPE,
                                       DAMAGE-DESTROYED    OT-  0  0  0                            NOT INSTRUMENT RATED.
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           PROPELLER/ROTOR FAILURE: MAIN ROTOR                      IN FLIGHT: NORMAL CRUISE
           COLLIDED WITH: TREES                                     LANDING: POWER-OFF AUTOROTATIVE LANDING
        PROBABLE CAUSE(S)
           ROTORCRAFT - TRANSMISSION ROTOR DRIVE SYSTEM: OTHER
           MISCELLANEOUS ACTS,CONDITIONS - MATERIAL FAILURE
           MISCELLANEOUS ACTS,CONDITIONS - LACK OF LUBRICATION-SPECIFIC PART,NOT SYSTEM
           PERSONNEL - MAINTENANCE,SERVICING,INSPECTION: INADEQUATE MAINTENANCE AND INSPECTION
           TERRAIN - HIGH OBSTRUCTIONS
        EMERGENCY CIRCUMSTANCES - FORCED LANDING OFF AIRPORT ON LAND
        REMARKS- BELTS UNABLE TO DRIVE M/R DUE TO BROKEN IDLER PULLY BRACKET CAUSED BY FAILURE OF M/R SHAFT BEARING
```

## Aircraft

- Registration: [N8921F](https://openairdocs.org/deregistered/N8921F-2021-12-04), registration cancelled 2021-12-04, S/N 0303 (OpenAirDocs)
- Reported make and model: HUGHES 269A
- Registry model: [Hughes 269A](https://openairdocs.org/model/hughes-269a) (registry code 4470402) (OpenAirDocs)
- Category: Helicopter
- Engines: reciprocating
- Damage: Destroyed

## Other investigations on N8921F (1)

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.

- [NTSB MKC66A0068](https://openairdocs.org/ntsb/MKC66A0068), Jun 23, 1966: Hughes 269A (N8921F), Minnetonka, MN, 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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