# NTSB UNK64X3520: Interstate S1A, N37341, Grace, ID, August 21, 1964

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: August 21, 1964
- Place: Grace, ID · GRACE, ID
- Location: 42.5752° N, 111.7310° W: Placed by OpenAirDocs: center of Grace, ID, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=42.5752&lon=-111.7310&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report October 30, 1964
- Report: Brief approved by the director
- NTSB case key (mKey): 181864
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=UNK64X3520
- Page: https://openairdocs.org/ntsb/UNK64X3520

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-2578  64/8/21    GRACE IDAHO         INTERSTATE S1A      CR-  0  0  1  NONCOMMERCIAL             PRIVATE, AGE 35, 1200
        TIME - 1640                    N37341              PX-  0  0  0  PLEASURE/PERSONAL TRANSP  TOTAL HOURS, 100 IN TYPE,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            NOT INSTRUMENT RATED.
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           ENGINE FAILURE OR MALFUNCTION                            IN FLIGHT: NORMAL CRUISE
           COLLIDED WITH: DITCHES                                   LANDING: ROLL
        PROBABLE CAUSE(S)
           MISCELLANEOUS ACTS,CONDITIONS - ANTI-ICING/DEICING EQUIPMENT-IMPROPER OPERATION OF/OR FAILED TO USE
           MISCELLANEOUS ACTS,CONDITIONS - ICE-CARBURETOR
        COMPLETE POWER LOSS - COMPLETE ENGINE FAILURE/FLAMEOUT-1 ENGINE
        EMERGENCY CIRCUMSTANCES - FORCED LANDING OFF AIRPORT ON LAND
```

## Aircraft

- Registration: [N37341](https://openairdocs.org/deregistered/N37341-2018-11-30), registration cancelled 2018-11-30, S/N 184 (OpenAirDocs)
- Reported make and model: INTERSTATE S1A
- Registry model: [Interstate S-1A](https://openairdocs.org/model/interstate-s-1a) (registry code 1850202) (OpenAirDocs)
- Category: Airplane
- Engines: reciprocating
- Damage: Substantial damage

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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