MINR · Hughes 269B · 2000-09-24 · BURLINGTON, WA, USA
Event
NTSB number
SEA00LA188
Event ID
20001212X22081
Type
Accident
Date
2000-09-24
Location
BURLINGTON, WA, USA
Coordinates
48.529411, -122.310058
Injuries
Highest injury
MINR
Fatal
0
Serious
0
Minor
3
Uninjured
0
Total aboard
3
Aircraft
Make
Hughes
Model
269B
Registration
N9355F
FAR Part
091
Engines
1
Damage
SUBS
Conditions
Light
DAYL
Weather
VMC
Probable cause
Mintenance personnel not following the mandatory service bulletin procedure of not exceeding 0.0005 inch paint thickness on the cylinder flange. Factors were the fatigue separation of multiple cylinder hold down bolts resulting in looseness of the cylinder; and the subsequent vibration and fatigue separation of the fuel injector line. An additional factor was the pilot's operation of the rotorcraft outside the height/velocity parameters for a successful autorotation.