# NTSB UNK65X0535: Brantly B2B, N2160U, Denver, CO, November 2, 1964

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: November 2, 1964
- Place: Denver, CO · DENVER, CO
- Location: 39.7392° N, 104.9847° W: Placed by OpenAirDocs: center of Denver, CO, within about 7 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=39.7392&lon=-104.9847&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report February 9, 1965
- Report: Brief approved by the director
- NTSB case key (mKey): 181796
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=UNK65X0535
- Page: https://openairdocs.org/ntsb/UNK65X0535

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
2-0823   64/11/2   DENVER COLO         BRANTLY B2B         CR-  0  0  1  INSTRUCTIONAL             STUDENT, AGE 21, 10 TOTAL
        TIME - 0825                    N2160U              PX-  0  0  0  SOLO                      HOURS, ALL IN TYPE,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            UNK/NR INSTRUMENT RATED.
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           ROLL OVER                                                LANDING: POWER-OFF AUTOROTATIVE LANDING
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - FAILED TO MAINTAIN ADEQUATE ROTOR R.P.M.
           PILOT IN COMMAND - IMPROPER OPERATION OF FLIGHT CONTROLS
           PILOT IN COMMAND - IMPROPER OPERATION OF POWERPLANT & POWERPLANT CONTROLS
           PERSONNEL - FLIGHT INSTRUCTOR: INADEQUATE TRAINING OF STUDENT
        EMERGENCY CIRCUMSTANCES - PRECAUTIONARY LANDING OFF AIRPORT
```

## Aircraft

- Registration: [N2160U](https://openairdocs.org/deregistered/N2160U-2011-09-12), registration cancelled 2011-09-12, S/N 321, built 1963 (OpenAirDocs)
- Reported make and model: BRANTLY B2B
- Registry model: [Brantly B-2B](https://openairdocs.org/model/brantly-b-2b) (registry code 1440506) (OpenAirDocs)
- Registry engine: [Lycoming O&VO-360 series](https://openairdocs.org/engine/lycoming-o-vo-360-series) (registry code 41514, reciprocating) (OpenAirDocs)
- Category: Helicopter
- Engines: reciprocating
- Damage: Substantial damage

## Other investigations on N2160U (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 DEN66A0022](https://openairdocs.org/ntsb/DEN66A0022), Sep 25, 1965: Brantly B2B (N2160U), Denver, CO, 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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