- Date
- September 4, 1987, 22:45 local (Sep 5, 1987, 03:45 UTC)
- Place
- Bulverde, TX
- Injuries
- 1 minor
- Damage
- Substantial damage
- Phase of flight
- Enroute
- Aircraft
- N807LACessna 208
- Weather
- Visual (VMC) · Night/bright
- Status
- Completed · report January 25, 1989
- Report
- Approved by Office Director
- FAA report
- 19870904050319A
- Case key
- 22273
From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.
On this page
Sequence of events
NTSB’s coding before 2008: each occurrence and phase of flight, and the causes and factors under it. The codes are defined in NTSB’s coding manual.
Analysis
After leveling at 5500', the standby power annunciator light illuminated, followed by loss of oil pressure. The plt turned back toward the arpt, but there was a progressive loss of eng power & the prop went to a feathered psn. Drg an emerg landing at night, the acft hit a power line & trees, then crashed. Drg an eng teardown, disassembly of the reduction gearbox scavenge pump revealed that a retaining nut & tang washer (w/i the scavenge pump) had backed off & lodged btn the spur gears, which resulted in a sheared scavenge pump drive shaft. In turn, this resulted in the loss of oil pressure & allowed the prop to feather.
Aircraft
- Registration
- N807LA
- Reported as
- Cessna 208
- Category
- Airplane
- Serial number
- 208A20800026
- Airframe hours
- 222
- Engine
- P&W PT6A-114, 632 horsepower, turbo prop
- Damage
- Substantial damage
- Flight
- Part 135
- Operator
- Martinair
- Registered owner
- Martinair Inc.
- Airworthiness certificate
- Standard, Normal
- Last inspection
- AAIP · August 17, 1987 · 47 hours before
- Departed
- SAT · San Antonio, TX
- Destination
- DAL · Dallas, TX
Matched to the registry by N-number and the event date; the registry’s history has gaps, so older matches can be wrong. Compare the reported make and model.
Flight crew
As NTSB recorded them. NTSB leaves out names.
- Role
- Pilot
- Certificates
- Airline transport, Flight instructor
- Airplane ratings
- Single-engine land, Multi-engine land
- Instrument ratings
- Airplane
- Medical
- Class 2, Valid Medical--w/ waivers/lim
- Seat
- Left
- Flight hours
- 3,100 total · 750 in this make and model · 2,850 as pilot in command · 250 in the last 90 days · 3 in the last 24 hours
Weather
- Conditions
- Visual (VMC) · Night/bright
- Wind
- 130° at 5 knots
- Visibility
- 10 statute miles
- Lowest ceiling
- None
- Temperature
- 82 °F, dew point 59 °F
- Altimeter
- 29.00 inHg
- Observed at
- SAT, 15 nm away
FAA reports on this event · 1
The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.