NONE · DOUGLAS DC8 · 2010-01-07 · Cincinnati (CVG), OH, USA
Event
NTSB number
ENG10IA016
Event ID
20100219X11249
Type
Incident
Date
2010-01-07
Location
Cincinnati (CVG), OH, USA
Coordinates
39.080337, -84.700584
Injuries
Highest injury
NONE
Fatal
0
Serious
0
Minor
0
Uninjured
0
Total aboard
0
Aircraft
Make
DOUGLAS
Model
DC8
Registration
N803DH
FAR Part
121
Engines
4
Damage
MINR
Conditions
Light
—
Weather
—
Probable cause
Failure of the NLG cylinder occurred by intergranular rupture; coincidental to a chrome plating crack. The failure origin occurred along the inner surface of the cylinder and then propagated by stress corrosion cracking to the outer surface. A secondary crack with the same features as the primary crack was found diagonal to the primary crack. Both cracks initiated by intergranular cracking due to grinding burns caused by abusive grinding and propagated by stress corrosion cracking. Hydrogen embrittlement did not contribute to the intergranular cracking.