# NTSB OAK73FVM35: Hazard-Turn T-40H, N13HH, Gonzales, CA, June 18, 1973

- Type: NTSB accident investigation
- Classification: Accident · Fatal · Closed
- Date: June 18, 1973
- Place: Gonzales, CA · GONZALES, CA
- Location: 36.5052° N, 121.4420° W: Placed by OpenAirDocs: center of Gonzales, CA, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=36.5052&lon=-121.4420&mi=10
- Phase of flight: [Maneuvering](https://openairdocs.org/ntsb-phases/450) (OpenAirDocs' grouping)
- Highest injury: Fatal
- Injuries: 2 fatal
- Status: Completed, report August 2, 1973
- Report: Brief approved by the director
- NTSB case key (mKey): 190239
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=OAK73FVM35
- Page: https://openairdocs.org/ntsb/OAK73FVM35

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-1545  73/6/18    GONZALES,CALIF      HAZARD-TURN T-40H   CR-  2  0  0  MISCELLANEOUS             COMMERCIAL, AGE 38, 3567
        TIME - 1545                    N13HH               PX-  0  0  0  TEST                      TOTAL HOURS, 4 IN TYPE,
                                       DAMAGE-DESTROYED    OT-  0  0  0                            INSTRUMENT RATED.
        DEPARTURE POINT             INTENDED DESTINATION
          MONTEREY,CALIF             UNKNOWN/NOT REPORTED
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           AIRFRAME FAILURE: IN FLIGHT                              IN FLIGHT: ACROBATICS
        PROBABLE CAUSE(S)
           AIRFRAME - WINGS: SPARS
           PERSONNEL - PRODUCTION-DESIGN-PERSONNEL: SUBSTANDARD QUALITY CONTROL
        FACTOR(S)
           MISCELLANEOUS ACTS,CONDITIONS - OVERLOAD FAILURE
        REMARKS- R WG MN SPAR AT R STRUT ATTACH PT WEAKENED BY MISLOCATED DRILLED HOLES.
```

## Aircraft

- Registration: [N13HH](https://openairdocs.org/deregistered/N13HH-1973-08-15), registration cancelled 1973-08-15, S/N 17, built 1970 (OpenAirDocs)
- Reported make and model: HAZARD-TURN T-40H
- Registry model: [Hart HAZARD-TURNER T-40H](https://openairdocs.org/model/hart-hazard-turner-t-40h) (registry code 05611EL) (OpenAirDocs)
- Category: Airplane
- Engines: reciprocating
- Damage: Destroyed

## 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 19730618018099A](https://openairdocs.org/incident/19730618018099A), Jun 18, 1973: Amtrxp CUBETTEA*, Gonzales, CA, Destroyed. R wg MN spar at r strut attach pt weakened by mislocated drilled holes.

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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