CircumFlightN511JN Curtiss JN4-D accident
NTSB SEA86LA208 · 1986-08-17 · VANCOUVER, WA · near 59S
Docket — crew, injuries and powerplant
Factual narrative
THE PLT REPORTED A NORMAL TAKEOFF WAS MADE WITH 1300 RPM. AT LIFTOFF A SMALL AMOUNT OF BLACK SMOKE EMITTED FROM BOTH EXHAUST STACKS AND THE RPM DROPPED TO 1250. AFTER CLEARING THE RWY, MORE BLACK SMOKE EMITTED AND THE RPM DROPPED TO 1200. THE PLT CLEARED TWO 40 FOOT TALL TREES AT THE END OF THE RWY AND MADE A HARD LANDING IN A FIELD BEYOND THE TREES. INVESTIGATION DISCLOSED THE FLOAT FROM THE ZENITH CARBURETOR HAD 17 VERITCAL LINES ON THE OUTSIDE DIAMETER AND CRACKS. THE FLOAT WAS FUEL SATURATED.
Circumstances
- Event type
- Accident
- Highest injury
- Minor
- Weather conditions
- Visual Meteorological Cond
- Light condition
- Day
- Sky condition
- BKN
- Ceiling (ft)
- 20000
- Visibility (sm)
- 40
- Wind direction
- 270
- Wind speed (kt)
- 7
- Temperature (F)
- 79
- Nearest airport
- EVERGREEN
- Distance from field
- 1.0
- Airport elevation
- 310
Aircraft
| Registration | Make | Model | Damage | FAR part |
|---|---|---|---|---|
| N511JN | CURTISS | JN4-D | SUBS | 091 |
Sequence of events
| # | Occurrence | Phase |
|---|---|---|
| 1 | 352 | Cruise |
| 2 | 180 | Cruise |
| 3 | 200 | Cruise |
| 4 | 191 | Cruise |
Findings
| Finding | |
|---|---|
| 15109 | cause |
| 15109 | cause |
| 24525 | cause |