CircumFlightN58344 Hughes 269C accident
NTSB LAX89LA246 · 1989-07-25 · KALAPANA, HI
Docket — crew, injuries and powerplant
Factual narrative
THE PILOT EXECUTED AN AUTOROTATION INTO HIGH VEGETATION AND TREES FOLLOWING AN ENGINE FAILURE. POST ACCIDENT EXAM OF THE ENGINE REVEALED THE NO. 2 CYLINDER EXHAUST VALVE FAILED. EXAMINATION OF THE ENGINE LOGBOOK REVEALED LYCOMING SERVICE BULLETIN 388A HAD NOT BEEN ACCOMPLISHED.
Probable cause
THE LOSS OF ENGINE POWER DUE TO THE FAILURE OF THE ENGINE EXHAUST VALVE IN THE NO. 2 CYLINDER AND THE DISREGARD OF THE LYCOMING SERVICE BULLETIN BY COMPANY MAINTENANCE PERSONNEL. CONTRIBUTING TO THE ACCIDENT WAS THE HIGH VEGETATION AND TREES LOCATED AT THE FORCED LANDING SITE. The National Transportation Safety Board determined the probable cause of this accident.
Circumstances
- Event type
- Accident
- Highest injury
- Serious
- Weather conditions
- Visual Meteorological Cond
- Light condition
- Day
- Sky condition
- NONE
- Ceiling (ft)
- 0
- Visibility (sm)
- 15
- Wind direction
- 0
- Temperature (F)
- 75
- Distance from field
- 0.0
Aircraft
| Registration | Make | Model | Damage | FAR part |
|---|---|---|---|---|
| N58344 | HUGHES | 269C | SUBS | 091 |
Sequence of events
| # | Occurrence | Phase |
|---|---|---|
| 1 | 351 | Cruise |
| 2 | 180 | Cruise |
| 3 | 230 | Cruise |
Findings
| Finding | |
|---|---|
| 14016 | cause |
| 24119 | cause |
| 24520 | |
| 19200 | factor |
| 20200 | factor |