LAX91LA300

NTSB accident investigation · Cessna 320 · Reno, NV · July 8, 1991

Accident · No injuriesLimited investigationFinal report
Date
July 8, 1991, 16:15 local (23:15 UTC)
Place
Reno, NV
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Takeoff
Aircraft
N3011TCessna 320
Weather
Visual (VMC) · Day
Status
Completed · report March 31, 1993
Report
Approved by Office Director
FAA report
19910708026669A
Case key
27280

From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.

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Probable cause

The fatigue failure of the propeller feathering counter weight clamp assembly.

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.

Airframe/component/system failure/malfunctionTakeoff - roll/run
Propeller system/accessories,counterweight - fatigueCause
Propeller system/accessories,counterweight - failure,totalCause

Analysis

The pilot stated that he applied full power and the aircraft was accelerating through 30 knots on the takeoff ground roll when he heard a loud explosion. The pilot aborted the takeoff and taxied back to the ramp. Inspection of the aircraft revealed that a clamp which retains one of the feathering counter weights on the left propeller had separated, and the counter weight penetrated through the nose structure of the aircraft. The failed clamp assembly was sent to the factory under the supervision of the FAA chicago aircraft certification office for detailed analysis. According to the report of the examination, the fracture was found to be of a fatigue type, with the origin on the lower inside corner of the steel strap. Chemical and hardness tests of the assembly revealed that the part met specifications. The reason for the fracture initiation was undetermined.

Aircraft

Registration
N3011T
Reported as
Cessna 320
Category
Airplane
Serial number
320C0011
Engine
Continental TSI0-470, 260 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Operator
David E. Baskett
Registered owner
David E. Baskett
Last inspection
Unknown · January 2, 2000
Destination
SMX · Santa Maria, CA
Airport
RNO · Reno-Cannon

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
48
Certificates
Commercial, Flight instructor, Airline transport
Airplane ratings
Single-engine land, Multi-engine land
Instrument ratings
Airplane, Helicopter
Medical
Class 2, Valid Medical--no waivers/lim.
Flight hours
4,000 total · 490 in this make and model · 3,000 as pilot in command · 25 in the last 90 days · 15 in the last 30 days · 6 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
270° at 15 knots
Visibility
35 statute miles
Lowest ceiling
None
Temperature
90 °F

FAA reports on this event · 1

The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.