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NTSB Report
March 14, 1989 · Cessna 177RG · N52800
Savannah, GA
Overview
Report Status
Probable Cause
Event Type
Incident
Date
March 14, 1989
Injury Outcomes
No injuries (4 uninjured)
Location
Savannah, GA
Aircraft
Cessna 177RG
Tail Number
N52800
Operator
Gertner Robert
Injuries
None
Aircraft Damage
Minor
NTSB Number
ATL89IA104
THE AIRPLANE LANDED GEAR-UP AFTER THE PLT WAS UNABLE TO LOWER THE GEAR USING THE NORMAL OR EMERGENCY GEAR EXTENSION SYSTEMS. EXAMINATION OF THE AIRPLANE AFTER THE MISHAP REVEALED THAT THE MLG ACTUATOR ROD END HAD FRACTURED. METALLURGICAL EXAMINATION OF THE FRACTURE SURFACE REVEALED PROGRESSIVE FATIGUE CRACKING THROUGH THE THREADED SHANK. IN 1979, CESSNA HAD ISSUED A SERVICE LETTER RECOMMENDING THE REPLACEMENT OF THIS P/N ROD END WITH A NEW, HIGH-STRENGTH ROD END. COMPLIANCE WITH THE SERVICE LETTER WAS NOT MANDATORY. EXAMINATION OF SDR'S FROM 1983 TO 1989 REVEALED NO HISTORY OF SIMILAR FAILURES INVOLVING THE OLD P/N ROD END.
NTSB Probable Cause
FATIGUE-INDUCED FRACTURE OF THE MAIN LANDING GEAR ACTUATOR ROD END.
Full Narrative
THE AIRPLANE LANDED GEAR-UP AFTER THE PLT WAS UNABLE TO LOWER THE GEAR USING THE NORMAL OR EMERGENCY GEAR EXTENSION SYSTEMS. EXAMINATION OF THE AIRPLANE AFTER THE MISHAP REVEALED THAT THE MLG ACTUATOR ROD END HAD FRACTURED. METALLURGICAL EXAMINATION OF THE FRACTURE SURFACE REVEALED PROGRESSIVE FATIGUE CRACKING THROUGH THE THREADED SHANK. IN 1979, CESSNA HAD ISSUED A SERVICE LETTER RECOMMENDING THE REPLACEMENT OF THIS P/N ROD END WITH A NEW, HIGH-STRENGTH ROD END. COMPLIANCE WITH THE SERVICE LETTER WAS NOT MANDATORY. EXAMINATION OF SDR'S FROM 1983 TO 1989 REVEALED NO HISTORY OF SIMILAR FAILURES INVOLVING THE OLD P/N ROD END.
Flight
Event TypeIncident
Event Time12:38 EST
Nearest AirportSavannah Int'L (0nm N)
Runway5
Runway Length3000 ft
Flight Plan FiledIFR
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftCessna 177RG
Tail NumberN52800
Aircraft CategoryAir
DamageMinor
OperatorGertner Robert
Operating RulePart 91
Engines1
Engine TypeReciprocating
Engine DetailsLycoming · IO-360-A1B6D · Reciprocating · 200
Seats4
People & Injuries
Injury SummaryNo injuries (4 uninjured)
Fatal0
Serious0
Minor0
Uninjured4
Total4
Crew 1Age 63 · Second Class
Conditions
ConditionsVMC
LightDaylight
Wind270° @ 12 kt
Visibility15 sm
CeilingNone
Temperature / Dew Point57
Altimeter30.00 inHg
Observation Time16:53
Weather SourceWFAC