# NTSB IAD76FKW11: Sidewinder S-9, N2SF, Portland, TN, September 15, 1975

- Type: NTSB accident investigation
- Classification: Accident · Fatal · Closed
- Date: September 15, 1975
- Place: Portland, TN · PORTLAND, TN
- Location: 36.5975° N, 86.5266° W: Placed by OpenAirDocs: center of Portland, TN, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=36.5975&lon=-86.5266&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: Fatal
- Injuries: 2 fatal
- Status: Completed, report October 23, 1975
- Report: Brief approved by the director
- NTSB case key (mKey): 150868
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=IAD76FKW11
- Page: https://openairdocs.org/ntsb/IAD76FKW11

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-2733  75/9/15  NR.PORTLAND,TN        SIDEWINDER S-9      CR-  1  0  0  NONCOMMERCIAL             PRIVATE, AGE 40, 300
        TIME - 1200                    N2SF                PX-  1  0  0  PLEASURE/PERSONAL TRANSP  TOTAL HOURS, ALL IN TYPE,
                                       DAMAGE-DESTROYED    OT-  0  0  0                            NOT INSTRUMENT RATED.
        DEPARTURE POINT             INTENDED DESTINATION
          PRATVILLE,AL               UNKNOWN/NOT REPORTED
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           ENGINE FAILURE OR MALFUNCTION                            IN FLIGHT: NORMAL CRUISE
           STALL: SPIN                                              IN FLIGHT: OTHER
        PROBABLE CAUSE(S)
           PERSONNEL - PRODUCTION-DESIGN-PERSONNEL: OTHER
           POWERPLANT - FUEL SYSTEM: SELECTOR VALVES
           MISCELLANEOUS ACTS,CONDITIONS - FUEL STARVATION
           PILOT IN COMMAND - FAILED TO OBTAIN/MAINTAIN FLYING SPEED
           PILOT IN COMMAND - IMPROPER OPERATION OF FLIGHT CONTROLS
        PARTIAL POWER LOSS - PARTIAL LOSS OF POWER - 1 ENGINE
        EMERGENCY CIRCUMSTANCES - FORCED LANDING OFF AIRPORT ON LAND
        REMARKS- FUEL SEL VALVE CORE DETERIORATED.NO POS SELECTION OF ANY PSN COULD BE DTMND.
```

## Aircraft

- Registration: [N2SF](https://openairdocs.org/deregistered/N2SF-1975-10-29), registration cancelled 1975-10-29, S/N 212207 (OpenAirDocs)
- Reported make and model: SIDEWINDER S-9
- Registry model: [Frank SMYTH SIDEWINDER](https://openairdocs.org/model/frank-smyth-sidewinder) (registry code 0562422) (OpenAirDocs)
- Category: Airplane, amateur-built
- 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 19750915029969A](https://openairdocs.org/incident/19750915029969A), Sep 15, 1975: Amtr 0562441, Portland, TN, Destroyed, 1 fatal. Fuel sel valve core deteriorated. No pos selection of any psn could be dtmnd.

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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