# NTSB OAK75DVA62: Cessna A188A, N9957G, Merced, CA, May 15, 1975

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: May 15, 1975
- Place: Merced, CA · MERCED, CA
- Location: 37.3114° N, 120.4704° W: Placed by OpenAirDocs: center of Merced, CA, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=37.3114&lon=-120.4704&mi=10
- Phase of flight: [Takeoff](https://openairdocs.org/ntsb-phases/300) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report June 20, 1975
- Report: Brief approved by the director
- NTSB case key (mKey): 132987
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=OAK75DVA62
- Page: https://openairdocs.org/ntsb/OAK75DVA62

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-1130  75/5/15    MERCED,CA           CESSNA A188A        CR-  0  0  1  COMMERCIAL                COMMERCIAL, AGE 30, 1200
        TIME - 1840                    N9957G              PX-  0  0  0  ASSOC CROP CTL ACTIVITY   TOTAL HOURS, 800 IN TYPE,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            NOT INSTRUMENT RATED.
        NAME OF AIRPORT - MERCED
        DEPARTURE POINT             INTENDED DESTINATION
          MERCED,CA                   LOCAL
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           PROPELLER/ROTOR FAILURE: PROPELLER                       TAKEOFF: RUN
           ENGINE TEARAWAY                                          TAKEOFF: RUN
        PROBABLE CAUSE(S)
           POWERPLANT - PROPELLER AND ACCESSORIES: HUBS
           MISCELLANEOUS ACTS,CONDITIONS - FATIGUE FRACTURE
           PERSONNEL - MAINTENANCE,SERVICING,INSPECTION: INADEQUATE MAINTENANCE AND INSPECTION
           MISCELLANEOUS ACTS,CONDITIONS - VIBRATION,EXCESSIVE
        FACTOR(S)
           MISCELLANEOUS ACTS,CONDITIONS - PREVIOUS DAMAGE
           MISCELLANEOUS ACTS,CONDITIONS - SEPARATION IN FLIGHT
         SPECIAL DATA
          TOTAL HOURS IN CROP CONTROL - 1200                       KIND OF OPERATION - FERTILIZING (DUST)
          KIND OF CROP - RICE                                      TYPE OF CHEMICAL USED - DRY CHEMICAL-NONTOXIC
          PILOT' S SEAT BELT -UNKNOWN/NOT REPORTED                 GLOVES - NOT USED
          GOGGLES - NOT USED                                       CRASH HELMET - AVAILABLE USED
          COCKPIT CRASHPAD - INSTALLED                             CRASH BAR - INSTALLED
          TANK/HOPPER-LOCATION - FORWARD OF PILOT                  TERRAIN-TYPE -LEVEL,FLAT
        REMARKS- HUB FAILED & 1 BLADE SEPARATED.ENG ALSO SEPARATED,DMGD WG & HORIZ STAB.PROP OVERHAULED NOV 73.
```

## Aircraft

- Registration: [N9957G](https://openairdocs.org/deregistered/N9957G-2004-09-29), registration cancelled 2004-09-29, S/N 18800757, built 1971 (OpenAirDocs)
- Reported make and model: CESSNA A188A
- Registry model: [Cessna A188A](https://openairdocs.org/model/cessna-a188a) (registry code 2073008) (OpenAirDocs)
- Registry engine: [Continental IO-520 series](https://openairdocs.org/engine/continental-io-520-series) (registry code 17032, reciprocating) (OpenAirDocs)
- Category: Airplane
- Engines: reciprocating
- Damage: Substantial damage
- Airport: Merced

## 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 19750515012479A](https://openairdocs.org/incident/19750515012479A), May 15, 1975: Cessna A188A, Merced, CA, Substantial damage. Hub failed & 1 blade separated. Eng also separated,dmgd wg & horiz stab. Prop overhauled nov 73.

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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