SEA87LA168

NTSB accident investigation · Beech G35 · Kent, WA · August 18, 1987

Accident · No injuriesLimited investigationFinal report
Date
August 17, 1987, 17:00 local (Aug 18, 1987, 00:00 UTC)
Place
Kent, WA
Injuries
2 uninjured
Damage
Substantial damage
Phase of flight
Initial climb
Aircraft
N4235DBeech G35
Weather
Visual (VMC) · Day
Status
Completed · report October 7, 1988
Report
Approved by Office Director
FAA report
19870817080649A
Case key
40678

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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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 - initial climb
Propeller system/accessories,prop blade retention - previous damageCause
Maintenance,overhaul - improperOther maintenance personnelCause
Propeller system/accessories,blade - separationCause
Forced landingDescent - emergency
In flight collision with terrain/waterLanding - flare/touchdown

Analysis

Shortly after rotation a propeller blade separated from the aircraft with the remaining propeller hub assembly and the other blade also falling from the aircraft. The pilot was able to land the aircraft straight ahead on the remaining runway. The hub was overhauled 7 hrs. Before the accident. Metallurgical examination of the propellers and hub assembly revealed that the separation of the blade from the hub was the result of the use of the severely damaged blade retention nut in the overhauled propeller.

Aircraft

Registration
N4235D
Reported as
Beech G35
Category
Airplane
Serial number
D4445
Airframe hours
4,609
Engine
Continental E-225-8, 225 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Registered owner
John Overman
Airworthiness certificate
Standard, Normal
Last inspection
Annual · January 22, 1987
Destination
ELN · Ellenburg, WA
Airport
S36 · Crest Airpark, runway 33, 3,000 × 150 ft, asphalt

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
45
Certificate
Private
Airplane ratings
Single-engine land
Medical
Class 3, Valid Medical--w/ waivers/lim
Seat
Left
Flight hours
518 total · 518 in this make and model · 494 as pilot in command · 5 in the last 90 days

Weather

Conditions
Visual (VMC) · Day
Wind
350° at 10 knots
Visibility
50 statute miles
Lowest ceiling
None
Temperature
79 °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.