# NTSB LAX81DUM17: Robinson R22, N90450, San Diego, CA, July 26, 1981

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: July 26, 1981
- Place: San Diego, CA · SAN DIEGO, CA
- Location: 32.7153° N, 117.1573° W: Placed by OpenAirDocs: center of San Diego, CA, within about 10 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=32.7153&lon=-117.1573&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 2 uninjured
- Status: Completed, report November 9, 1981
- Report: Brief approved by the director
- NTSB case key (mKey): 123921
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=LAX81DUM17
- Page: https://openairdocs.org/ntsb/LAX81DUM17

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-2323  81/7/26    SAN DIEGO,CA        ROBINSON R22        CR-  0  0  1  NONCOMMERCIAL             PRIVATE, AGE 23, 3030
        TIME - 1140                    N90450              PX-  0  0  1  PRACTICE                  TOTAL HOURS, 44 IN TYPE,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            INSTRUMENT RATED.
        NAME OF AIRPORT - MONTGOMERY
        DEPARTURE POINT             INTENDED DESTINATION
          SAN DIEGO,CA                LOCAL
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           COLLISION WITH GROUND/WATER: CONTROLLED                  LANDING: POWER-OFF AUTOROTATIVE LANDING
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - MISJUDGED SPEED AND ALTITUDE
           PILOT IN COMMAND - FAILED TO MAINTAIN ADEQUATE ROTOR R.P.M.
        REMARKS- PRACTICING AUTOROTATIVE APCH.AFT BGNG NORMAL FLARE/TRANSITION TO FWD FLT,ACFT SETTLED,TAIL HIT GND
```

## Aircraft

- Registration: [N90450](https://openairdocs.org/aircraft/N90450), registered now, S/N 0120, built 1981 (OpenAirDocs)
- Reported make and model: ROBINSON R22
- Registry model: [Robinson Helicopter R22](https://openairdocs.org/model/robinson-helicopter-r22) (registry code 7640102) (OpenAirDocs)
- Registry engine: [Lycoming 0-320 series](https://openairdocs.org/engine/lycoming-0-320-series) (registry code 41508, reciprocating) (OpenAirDocs)
- Category: Helicopter
- Engines: reciprocating
- Damage: Substantial damage
- Airport: Montgomery

## FAA reports on this event (1)

The FAA's own accident and incident reports, matched to the aircraft by N-number and date (OpenAirDocs).

- [Accident 19810726044269A](https://openairdocs.org/incident/19810726044269A), Jul 26, 1981: Robsin R22, San Diego, CA, Substantial damage. Pilot attempting simulated autorotation made hard landing breaking tail rotor blades.

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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