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NTSB Report
October 9, 1982 · Cessna 177RG · N45696
Montgomery, AL
Overview
Report Status
Preliminary report
Event Type
Accident
Date
October 9, 1982
Injury Outcomes
No injuries (1 uninjured)
Location
Montgomery, AL
Aircraft
Cessna 177RG
Tail Number
N45696
Operator
Harvey Monk
Injuries
None
Aircraft Damage
Substantial
NTSB Number
ATL83FA008
AFTER ADVANCING THE THROTTLE ABOUT 1/2 OF ITS TRAVEL TO COMMENCE THE TAKEOFF ROLL, THE PLT HEARD A LOUD EXPLOSION & FELT A VIOLENT SHAKING OF THE ACFT. THE ENG QUIT & THE ACFT SWERVED TO THE RIGHT SIDE OF THE RWY. POST CRASH EXAMINATIONREVEALED THAT ONE ENTIRE PROPELLER BLADE HAD BEEN THROWN FROM THE PROPELLER HUB. THE FATIGUE FAILURE ORIGINATED AT A LOCATION ACROSS THE HUB FROM THE OPEN AREA & PROPOGATED OVER APPROXIMATELY 80% OF THE SURFACE BEFORE BREAKING AWAY IN OVERLOAD. THE FATIGUE ORIGINATED FROM AN AREA OF A METAL DEFECT IN THE FORM OF OVERHEATED MELTED MATERIAL. A DISCOLORED IRREGULAR AREA EXISTED ALONG THE OUTER RADIUS OF THE ORIGIN AREA, & DETAILED EXAMINATION OF THIS AREA DISCLOSED SPHERICAL PORES & STRUCTURE INDICATIVE OF FUSED METAL. THE FATIGUE STRIATIONS EMANATED FROM THE BASE OF THE POROUS & FUSED ZONE. A SPECIFIC CAUSE OF THE DEFECT WAS NOT IDENTIFIED.
Full Narrative
AFTER ADVANCING THE THROTTLE ABOUT 1/2 OF ITS TRAVEL TO COMMENCE THE TAKEOFF ROLL, THE PLT HEARD A LOUD EXPLOSION & FELT A VIOLENT SHAKING OF THE ACFT. THE ENG QUIT & THE ACFT SWERVED TO THE RIGHT SIDE OF THE RWY. POST CRASH EXAMINATIONREVEALED THAT ONE ENTIRE PROPELLER BLADE HAD BEEN THROWN FROM THE PROPELLER HUB. THE FATIGUE FAILURE ORIGINATED AT A LOCATION ACROSS THE HUB FROM THE OPEN AREA & PROPOGATED OVER APPROXIMATELY 80% OF THE SURFACE BEFORE BREAKING AWAY IN OVERLOAD. THE FATIGUE ORIGINATED FROM AN AREA OF A METAL DEFECT IN THE FORM OF OVERHEATED MELTED MATERIAL. A DISCOLORED IRREGULAR AREA EXISTED ALONG THE OUTER RADIUS OF THE ORIGIN AREA, & DETAILED EXAMINATION OF THIS AREA DISCLOSED SPHERICAL PORES & STRUCTURE INDICATIVE OF FUSED METAL. THE FATIGUE STRIATIONS EMANATED FROM THE BASE OF THE POROUS & FUSED ZONE. A SPECIFIC CAUSE OF THE DEFECT WAS NOT IDENTIFIED.
Flight
Event TypeAccident
Event Time11:20 CDT
Nearest AirportDannely Field (0nm N)
Runway21
Runway Length4010 ft
Runway Width150 ft
Flight Plan FiledNone
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftCessna 177RG
Tail NumberN45696
Aircraft CategoryAir
DamageSubstantial
OperatorHarvey Monk
Operating RulePart 91
Engines1
Engine TypeReciprocating
Engine DetailsLycoming · IO-360-A1B60 · Reciprocating · 200
Seats4
People & Injuries
Injury SummaryNo injuries (1 uninjured)
Fatal0
Serious0
Minor0
Uninjured1
Total1
Crew 1Age 39 · Second Class
Conditions
ConditionsVMC
LightDaylight
Wind220° @ 8 kt
Visibility7 sm
CeilingNone
Temperature / Dew Point0 C / 0 C
Altimeter0