- Date
- November 25, 1989, 13:00 local (19:00 UTC)
- Place
- Crosbyton, TX
- Injuries
- 2 minor
- Damage
- Destroyed
- Phase of flight
- Enroute
- Aircraft
- N27007Beech V35
- Weather
- Visual (VMC) · Day
- Status
- Completed · report June 25, 1992
- Report
- Approved by Office Director
- FAA report
- 19891125046639A
- Case key
- 23080
From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.
On this page
Probable cause
Improper overhaul of the aircraft engine by maintenance personnel that led to the complete loss of engine oil due to an undertorqued oil cooler assembly. Factors in the accident were the failure of maintenance personnel to detect the condition during the annual inspection and the unsuitable terrain for the forced landing.
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
The aircraft engine failed, after a complete loss of oil, due to an undertorqued oil cooler to engine assembly that permitted the oil to bypass the seal. The engine had been in service 162 hours since overhaul and 3 hours since annual inspection. The pilot executed a forced landing to rough terrain that caused the main gear to shear, nose gear to collapse, and the aircraft to nose over.
Aircraft
- Registration
- N27007
- Reported as
- Beech V35
- Category
- Airplane
- Serial number
- 8364
- Airframe hours
- 3,927
- Engine
- Continental IO-520-BA, 285 horsepower, reciprocating
- Damage
- Destroyed
- Flight
- Personal · Part 91
- Registered owner
- Turner, Doyle Eugene
- Airworthiness certificate
- Standard, Normal
- Last inspection
- Annual · November 20, 1989 · 3 hours before
- Departed
- LBB · Lubbock, TX
- Destination
- 1F7 · Dallas Airpark, TX
- Flight plan
- VFR
- Airport
- 8F3 · Crosbyton, 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
- Age
- 53
- Certificate
- Private
- Airplane ratings
- Multi-engine land, Single-engine land
- Instrument ratings
- Airplane
- Medical
- Class 3, Valid Medical--w/ waivers/lim
- Seat
- Left
- Flight hours
- 3,000 total · 1,200 in this make and model · 3,000 as pilot in command · 40 in the last 90 days · 12 in the last 30 days · 1 in the last 24 hours
Weather
- Conditions
- Visual (VMC) · Day
- Wind
- 280° at 20 knots
- Visibility
- 15 statute miles
- Lowest ceiling
- None
- Temperature
- 70 °F, dew point -0 °F
- Altimeter
- 30.00 inHg
FAA reports on this event · 1
The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.