# NTSB DEN66A0003: Brantly B2B, N2170U, Phoenix, AZ, July 3, 1965

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: July 3, 1965
- Place: Phoenix, AZ · PHOENIX, AZ
- Location: 33.4484° N, 112.0740° W: Placed by OpenAirDocs: center of Phoenix, AZ, within about 13 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=33.4484&lon=-112.0740&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 2 uninjured
- Status: Completed, report October 11, 1965
- Report: Brief approved by the director
- NTSB case key (mKey): 177205
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=DEN66A0003
- Page: https://openairdocs.org/ntsb/DEN66A0003

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
2-0490   65/7/3  NR.PHOENIX ARIZ       BRANTLY B2B         CR-  0  0  2  NONCOMMERCIAL             COMMERCIAL, AGE 46, 5722
        TIME - 0730                    N2170U              PX-  0  0  0  PRACTICE                  TOTAL HOURS, 21 IN TYPE,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            NOT INSTRUMENT RATED.
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           HARD LANDING                                             LANDING: POWER-OFF AUTOROTATIVE LANDING
        PROBABLE CAUSE(S)
          PILOT-IMPROPERLY EXECUTED AOTOROTATIVE LANDING
           CHECK PILOT - INADEQUATE SUPERVISION OF FLIGHT
        FACTOR(S)
           WEATHER - HIGH DENSITY ALTITUDE
        SKY CONDITION                                            CEILING AT ACCIDENT SITE
          CLEAR                                                    UNLIMITED
        VISIBILITY AT ACCIDENT SITE                              PRECIPITATION AT ACCIDENT SITE
          5 OR OVER(UNLIMITED)                                     NONE
        OBSTRUCTIONS TO VISION AT ACCIDENT SITE                  TEMPERATURE-F
          NONE                                                      80
        WIND VELOCITY-KNOTS                                      TYPE OF WEATHER CONDITIONS
          CALM                                                     VFR
        TYPE OF FLIGHT PLAN
          NONE
```

## Aircraft

- Registration: [N2170U](https://openairdocs.org/deregistered/N2170U-1971-09-28), registration cancelled 1971-09-28, S/N 332, 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 N2170U (2)

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 OAK69F0230](https://openairdocs.org/ntsb/OAK69F0230), Feb 1, 1969: Brantly B-2B (N2170U), Benicia, CA, destroyed
- [NTSB UNK64X1834](https://openairdocs.org/ntsb/UNK64X1834), May 18, 1964: Brantly B2B (N2170U), Tulsa, OK, destroyed

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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