NYC91LA062

NTSB accident investigation · Cessna P206 · Cleveland, OH · January 23, 1991

Accident · Minor injuriesLimited investigationFinal report
Date
January 23, 1991, 09:00 local (14:00 UTC)
Place
Cleveland, OH
Injuries
3 minor
Damage
Substantial damage
Phase of flight
Approach
Aircraft
N4626FCessna P206
Weather
Visual (VMC) · Day
Status
Completed · report June 2, 1992
Report
Approved by Office Director
FAA report
19910123000929A
Case key
36868

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

Fatigue failure of the number two propeller blade actuating pin, due to improper installation of the pins and non-compliance with an airworthiness directive (AD 77-13-77).

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/malfunctionApproach - vfr pattern - final approach
Propeller system/accessories,pitch change mech - fatigueCause
Maintenance,compliance with ad - not followedOther maintenance personnelCause
Forced landingDescent - emergency
Nose downLanding - flare/touchdown
Terrain condition - rough/uneven
Terrain condition - soft

Analysis

At aprx 1200' MSL, while on final apch to rwy 23R, the plt & psgr noted a 'different' sound fm the prop/eng. There was a loss of thrust fm the eng. Also, a rough or out-of-balance cond was noted. The plt stated he was unable to maint alt & was forced to make an emerg lndg about 3/4 mi short of the rwy. Drg the lndg, the acft enctrd soft/uneven trrn & nosed down. No preimpact mechanical problem was fnd with the eng. A post-acdnt exam revealed that all 3 prop blades were free to rotate 360 deg in their hubs. Fatigue fractures were fnd on 2 of the 3 prop blade actuating pins; fatigue striations were fnd on 90 to 95 percent of the #2 prop actuating pin & about 60 percent on the #1 prop pin (B-3491 pins). Neither of these pins had been reworked to shorten the threaded end iaw AD 77-13-17, which referenced mccauley service bulletin #99. Drg instln, the pins had 'bottomed out' in their respective tapped holes, which prevented proper seating. The #3 prop blade actuating pin was a correct pin (B-4460) & it had no preimpact crack or failure.

Aircraft

Registration
N4626F
Reported as
Cessna P206
Category
Airplane
Serial number
P206-0226
Engine
Continental IO-520-A, 285 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Registered owner
Max Krumpe
Airworthiness certificate
Standard, Normal
Departed
HGR · Hagerstown, MD
Destination
CLE
Airport
Cleveland-Hopkins Intl, runway 23R, 7,095 × 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
65
Certificate
Private
Airplane ratings
Single-engine land
Medical
Class 3, Valid Medical--w/ waivers/lim
Seat
Left
Flight hours
700 total · 200 in this make and model · 700 as pilot in command · 33 in the last 90 days · 3 in the last 30 days · 2 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Visibility
10 statute miles
Temperature
16 °F
Altimeter
29.00 inHg

FAA reports on this event · 1

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

Other investigations on N4626F · 1

Matched to the same aircraft by N-number and date.