Pitting corrosion incidents of aircraft and helicopters

Table 1 Pitting corrosion incidents of aircraft and helicopters

Aircraft	Location of Failure	Cause	Incident Severity	Place	Year	From
Bell Helicopter	Fuselage, longeron	Fatigue, corrosion and pitting present	Serious	AR, USA	1997	NTSB
DC-6	Engine, master connecting rod	Corrosion pitting	Fatal	AK, USA	1996	NTSB
Piper PA-23	Engine, cylinder	Corrosion pitting	Fatal	AL, USA	1996	NTSB
Boeing 75	Rudder Control	Corrosion pitting	Substantial damage to plane	WI, USA	1996	NTSB
Embraer 120	Propeller Blade	Corrosion pitting	Fatal and serious, loss of plane	GA, USA	1995	NTSB
Gulfstream GA-681	Hydraulic Line	Corrosion pitting	Loss of plane, no injuries	AZ, USA	1994	NTSB
L-1011	Engine, compressor assembly disk	Corrosion pitting	Loss of plane, no injuries	AK, USA	1994	NTSB
Embraer 120	Propeller Blade	Corrosion pitting	Damage to plane, no injuries	Canada	1994	NTSB
Embraer 120	Propeller Blade	Corrosion pitting	Damage to plane, no injuries	Brazil	1994	NTSB
F/A-18	Trailing-edge Flap (TEF) Outboard Hinge Lug	Corrosion pitting, fatigue	Loss of TEF	Australia	1993	AMRL
Mooney Mooney 20	Engine, interior	Corrosion pitting, improper approach	Minor injuries	TX, USA	1993	NTSB
Aero Commander 680	Lower Spar Cap	Corrosion pitting	Fatal	Sweden	1990	Swedish CAA

Review of Pitting Corrosion Fatigue Models, D.W. Hoeppner, V. Chandrasekaran, and A.M.H. Taylor, University of Utah and FASIDE International Inc.