Mandatory Inspections
Mandatory Inspection-005 Installation of Governor Arm Clutch
Download PDF The link below will provide you with instructions on installing the arm clutch. https://www.safarihelicopter.com/instructionstoinstall/ All Safari helicopters equipped with a Safari governor, which includes a stepper motor, must install a clutch mechanism onto the governor control arm. We have previously advised that the opening in the stepper motor case must be sealed against…
Read MoreMandatory Inspection-004 Inspection of Engine Governor Motor
MI004 EngineGovernor Motor Mandatory Inspection of Engine Governor Motor September 25, 2017 A Safari owner has experienced a failure of the engine governor stepper motor in flight. Fortunately, he was able to bring the aircraft safely to the ground without damage. Inspection of the motor revealed that water had entered the small hole in the…
Read MoreMandatory Inspection-003 Horizontal Stabilizer Mandatory Inspection and Modification
Download PDF MI-003 Horizontal Stabilizer Mandatory Inspection and Modification April 6, 2015 We have observed evidence of fatigue cracking at the location of a horizontal stabilizer positioning flange, which has the potential to break in flight. While it should not be a catastrophic failure if the helicopter is being operated within the Center of Gravity…
Read MoreMandatory Inspection-002 Main Rotor Spindle Machining/Field Damage
Download PDF MI-002 Main Rotor Spindle Machining/Field Damage In the course of the NTSB investigation of the fatal accident May 22, 2010 of Gauchat-Safari Helicopter N147MD, the NTSB Materials Laboratory identified distinct circumferential machining marks in the radius of the main rotor spindle. A fatigue fracture originated at the point of transition from the radius…
Read MoreMandatory Inspection-001 Main Transmission Drive Shaft Scarring
Download PDF In several SAFARI helicopters, minor scarring has been observed on the titanium main transmission drive shaft at the point of contact with the mast bearing seals. Due to the robust design of the drive shaft, minor scarring is not a matter for concern. To prevent this from developing on helicopters currently being built,…
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