# NTSB DEN77FTE66: Pitts S1S, N266Y, Boulder, CO, July 19, 1977

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: July 19, 1977
- Place: Boulder, CO · BOULDER, CO
- Location: 40.0244° N, 105.2513° W: Placed by OpenAirDocs: center of Boulder, CO, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=40.0244&lon=-105.2513&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report August 22, 1977
- Report: Brief approved by the director
- NTSB case key (mKey): 146719
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=DEN77FTE66
- Page: https://openairdocs.org/ntsb/DEN77FTE66

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-1716  77/7/19    BOULDER, CO         PITTS S1S           CR-  0  0  1  NONCOMMERCIAL             COMMERCIAL, AGE 30, 1390
        TIME - 1040                    N266Y               PX-  0  0  0  PLEASURE/PERSONAL TRANSP  TOTAL HOURS, 243 IN TYPE,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            INSTRUMENT RATED.
        DEPARTURE POINT             INTENDED DESTINATION
          BOULDER,CO                  LOCAL
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           ENGINE FAILURE OR MALFUNCTION                            IN FLIGHT: DESCENDING
           GEAR COLLAPSED                                           LANDING: ROLL
        PROBABLE CAUSE(S)
           PERSONNEL - MAINTENANCE,SERVICING,INSPECTION: OTHER
           POWERPLANT - ENGINE CONTROLS: THROTTLE-POWER LEVER ASSEMBLIES
           MISCELLANEOUS ACTS,CONDITIONS - IMPROPERLY INSTALLED
           MISCELLANEOUS ACTS,CONDITIONS - JAMMED
           TERRAIN - ROUGH/UNEVEN
        FACTOR(S)
           MISCELLANEOUS ACTS,CONDITIONS - OVERLOAD FAILURE
        PARTIAL POWER LOSS - PARTIAL LOSS OF POWER - 1 ENGINE
        EMERGENCY CIRCUMSTANCES - FORCED LANDING OFF AIRPORT ON LAND
        REMARKS- THROTTLE CABLE CONTACTED EXHAUST,JAMMED.
```

## Aircraft

- Registration: [N266Y](https://openairdocs.org/aircraft/N266Y), registered now, S/N 18P, built 1968 (OpenAirDocs)
- Reported make and model: PITTS S1S
- Registry model: [Herendeen Bob PITTS S1S](https://openairdocs.org/model/herendeen-bob-pitts-s1s) (registry code 72202R4) (OpenAirDocs)
- Registry engine: [Lycoming O&VO-360 series](https://openairdocs.org/engine/lycoming-o-vo-360-series) (registry code 41514, reciprocating) (OpenAirDocs)
- Category: Airplane
- Engines: reciprocating
- Damage: Substantial damage

## Other investigations on N266Y (1)

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.

- [NTSB OAK71FXQ17](https://openairdocs.org/ntsb/OAK71FXQ17), Sep 17, 1970: Pitts S-1-S (N266Y), Sparks, NV, destroyed

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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