# NTSB MIA66A0100: Hughes 269B, N9401F, Memphis, TN, March 1, 1966

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: March 1, 1966
- Place: Memphis, TN · MEMPHIS, TN
- Location: 35.1495° N, 90.0490° W: Placed by OpenAirDocs: center of Memphis, TN, within about 10 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=35.1495&lon=-90.0490&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 2 uninjured
- Status: Completed, report November 30, 1966
- Report: Brief approved by the director
- NTSB case key (mKey): 173305
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=MIA66A0100
- Page: https://openairdocs.org/ntsb/MIA66A0100

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
2-0358   66/3/1    MEMPHIS TENN        HUGHES 269B         CR-  0  0  1  MISCELLANEOUS             COMMERCIAL, AGE 30, 2200
        TIME - 1640                    N9401F              PX-  0  0  1  POLICE PATROL             TOTAL HOURS, 950 IN TYPE,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            NOT INSTRUMENT RATED.
        NAME OF AIRPORT - DOWNTOWN
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           AIRFRAME FAILURE: IN FLIGHT                              IN FLIGHT: NORMAL CRUISE
        PROBABLE CAUSE(S)
           PERSONNEL - MAINTENANCE,SERVICING,INSPECTION: INADEQUATE MAINTENANCE AND INSPECTION
           ROTORCRAFT - ROTOR ASSEMBLIES: TAIL ROTOR BLADES
           MISCELLANEOUS ACTS,CONDITIONS - OUT OF BALANCE
           MISCELLANEOUS ACTS,CONDITIONS - VIBRATION,EXCESSIVE
           ROTORCRAFT - FLIGHT CONTROL SYSTEMS: STABILIZING SURFACES-DAMPERS
           MISCELLANEOUS ACTS,CONDITIONS - FATIGUE FRACTURE
           MISCELLANEOUS ACTS,CONDITIONS - IMPROPERLY INSTALLED
        FACTOR(S)
           MISCELLANEOUS ACTS,CONDITIONS - SEPARATION IN FLIGHT
        EMERGENCY CIRCUMSTANCES - FORCED LANDING OFF AIRPORT ON LAND
                                  SUSPECTED OR KNOWN AIRCRAFT DAMAGE
                                  PROP/ENGINE VIBRATION
        REMARKS- LOOSE T/R ABRASIVE STRIP CAUSED VIBRATION WHICH FAILED IMPROPER RIVETS IN STABILIZER MOUNT BRACKET
```

## Aircraft

- Registration: [N9401F](https://openairdocs.org/deregistered/N9401F-1973-05-10), registration cancelled 1973-05-10, S/N 0146, built 1965 (OpenAirDocs)
- Reported make and model: HUGHES 269B
- Registry model: [Hughes 300C](https://openairdocs.org/model/hughes-300c) (registry code 4470731) (OpenAirDocs)
- Category: Helicopter
- Engines: reciprocating
- Damage: Substantial damage
- Airport: Downtown

## Other investigations on N9401F (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 LAX71FUA22](https://openairdocs.org/ntsb/LAX71FUA22), Oct 17, 1970: Hughes 269B (N9401F), Long Beach, CA, 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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