NONE · GULFSTREAM AEROSPACE G-IV · 2023-06-17 · Sioux City, IA, USA
Event
NTSB number
ENG23LA030
Event ID
20230623192429
Type
Incident
Date
2023-06-17
Location
Sioux City, IA, USA
Coordinates
42.398489, -96.382152
Injuries
Highest injury
NONE
Fatal
0
Serious
0
Minor
0
Uninjured
9
Total aboard
9
Aircraft
Make
GULFSTREAM AEROSPACE
Model
G-IV
Registration
N926TT
FAR Part
135
Engines
2
Damage
MINR
Conditions
Light
DAYL
Weather
VMC
Probable cause
A No. 2 (right) engine failure due to a spinner fairing separation and subsequent impact with the fan blades that resulted in a midspan fracture of one fan blade. The spinner fairing separated as a result of a fatigue crack that originated from the heat affected zone of a tack weld that secured a spacer to the aft side of the fairing. Contributing to the incident was inadequate spinner fairing inspection procedures that did not require removal of the spinner fairing to inspect the aft side for earlier detection of crack indications.