# NTSB MKC70FCJ13: Brantly B-2B, N2236U, Alliance, NE, February 23, 1970

- Type: NTSB accident investigation
- Classification: Accident · Minor injuries · Closed
- Date: February 23, 1970
- Place: Alliance, NE · ALLIANCE, NE
- Location: 42.1026° N, 102.8769° W: Placed by OpenAirDocs: center of Alliance, NE, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=42.1026&lon=-102.8769&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: Minor injuries
- Injuries: 2 minor
- Status: Completed, report April 30, 1970
- Report: Brief approved by the director
- NTSB case key (mKey): 138651
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=MKC70FCJ13
- Page: https://openairdocs.org/ntsb/MKC70FCJ13

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-0029  70/2/23    ALLIANCE,NEBR       BRANTLY B-2B        CR-  0  0  2  INSTRUCTIONAL             COMMERCIAL, FL.INSTR.,
        TIME - 1030                    N2236U              PX-  0  0  0  DUAL                      AGE 36, 369 TOTAL HOURS,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            139 IN TYPE, NOT
                                                                                                   INSTRUMENT RATED.
        NAME OF AIRPORT - ALLIANCE
        DEPARTURE POINT             INTENDED DESTINATION
          ALLIANCE,NEBR               LOCAL
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           HARD LANDING                                             LANDING: POWER-OFF AUTOROTATIVE LANDING
           GEAR COLLAPSED                                           LANDING: POWER-OFF AUTOROTATIVE LANDING
        PROBABLE CAUSE(S)
           DUAL STUDENT - SPONTANEOUS-IMPROPER ACTION
           DUAL STUDENT - IMPROPER OPERATION OF FLIGHT CONTROLS
           DUAL STUDENT - CONTROL INTERFERENCE
           PILOT IN COMMAND - INADEQUATE SUPERVISION OF FLIGHT
           MISCELLANEOUS ACTS,CONDITIONS - SIMULATED CONDITIONS
        FACTOR(S)
           MISCELLANEOUS ACTS,CONDITIONS - OVERLOAD FAILURE
        REMARKS- IP SAID WAS DEMONSTRATING AUTOROTATIVE LDG WHEN STUDENT SUDDNLY PULLED COLLECTV CTL.UN REGAIN RPM.
```

## Aircraft

- Registration: [N2236U](https://openairdocs.org/aircraft/N2236U), registered now, S/N 475, built 1967 (OpenAirDocs)
- Reported make and model: BRANTLY B-2B
- 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
- Airport: Alliance

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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