# NTSB OAK77DVG57: Grum Amer AA1B, N1436R, Elk Grove, CA, August 1, 1977

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: August 1, 1977
- Place: Elk Grove, CA · ELK GROVE, CA
- Location: 38.4088° N, 121.3716° W: Placed by OpenAirDocs: center of Elk Grove, CA, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=38.4088&lon=-121.3716&mi=10
- Phase of flight: [Initial climb](https://openairdocs.org/ntsb-phases/350) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report October 13, 1977
- Report: Brief approved by the director
- NTSB case key (mKey): 146188
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=OAK77DVG57
- Page: https://openairdocs.org/ntsb/OAK77DVG57

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-2042   77/8/1    ELK GROVE,CA        GRUM AMER AA1B      CR-  0  0  1  INSTRUCTIONAL             STUDENT, AGE 24, 48 TOTAL
        TIME - 1457                    N1436R              PX-  0  0  0  SOLO                      HOURS, 15 IN TYPE, NOT
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            INSTRUMENT RATED.
        DEPARTURE POINT             INTENDED DESTINATION
          SACRAMENTO,CA               FRANKLIN,CA
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           PROPELLER/ROTOR FAILURE: PROPELLER                       TAKEOFF: INITIAL CLIMB
           COLLIDED WITH: FENCE,FENCEPOSTS                          LANDING: ROLL
        PROBABLE CAUSE(S)
           POWERPLANT - PROPELLER AND ACCESSORIES: BLADES
           MISCELLANEOUS ACTS,CONDITIONS - MATERIAL FAILURE
        FACTOR(S)
           MISCELLANEOUS ACTS,CONDITIONS - SEPARATION IN FLIGHT
        EMERGENCY CIRCUMSTANCES - FORCED LANDING OFF AIRPORT ON LAND
                                  PROP/ENGINE VIBRATION
        REMARKS- 3-3/4 INCHES OF BLADE TIP SEPARATED.
```

## Aircraft

- Registration: [N1436R](https://openairdocs.org/deregistered/N1436R-2008-09-05), registration cancelled 2008-09-05, S/N AA1B-0536, built 1975 (OpenAirDocs)
- Reported make and model: GRUM AMER AA1B
- Registry model: [Grumman American Avn. AA-1B](https://openairdocs.org/model/grumman-american-avn-aa-1b) (registry code 3960103) (OpenAirDocs)
- Registry engine: [Lycoming 0-235 series](https://openairdocs.org/engine/lycoming-0-235-series) (registry code 41505, 4 cycle) (OpenAirDocs)
- Category: Airplane
- Engines: reciprocating
- Damage: Substantial damage

## 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 19770801023349A](https://openairdocs.org/incident/19770801023349A), Aug 1, 1977: Grumav AA1B, Elk Grove, CA, Substantial damage. 3-3/4 Inches of blade tip separated.

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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