Airworthiness Directives 2004
I, DAVID ALAN VILLIERS, delegate of the Civil Aviation Safety
Authority, acting under subregulation 39.001 (1) of the Civil
Aviation Safety Regulations 1998:
(a) revoke the Airworthiness Directives mentioned in
Schedule 1; and
(b) make, as separate instruments, each Airworthiness
Directive mentioned in Schedule 1 and attached.
David Villiers
Delegate of the Civil Aviation Safety Authority
20 December 2004
Note: Each attached Airworthiness Directive is being re-made in exactly the
same form as appears in the latest published edition of the Directive.
Schedule 1 Revocation and Remaking of
Airworthiness Directives
Bell Helicopter Textron 412 Series Helicopters
AD Name AD Number
Engine Mount Fireshield - Installation AD/BELL 412/1
Retirement Lives - Fatigue Critical Components AD/BELL 412/2 Amdt 1
Main Rotor Yoke - Inspection - CANCELLED AD/BELL 412/3
Main Rotor Yoke - Inspection, Retirement and Modification AD/BELL 412/4 Amdt 1
Engine Fuel Switch - Inspection/Replacement AD/BELL 412/5 Amdt 1
Main Rotor Pitch Link Assemblies - Replacement AD/BELL 412/6
Airspeed and Ground Operation Restriction AD/BELL 412/7 Amdt 1
Installation of Main Rotor Droop Restraint Kit and Cyclic Stick Centring AD/BELL 412/8
Main Rotor Blade Pitch Horns - Inspection AD/BELL 412/9 Amdt 1
Upper Anti-Collision Strobe Light P/No HR, DF-28DRMS Inspection, AD/BELL 412/10
Main Rotor Yoke, P/N 412-010-101-123 - Inspection AD/BELL 412/11
Vertical Fin Forward Spar AD/BELL 412/12 Amdt 5
Tail Rotor Trunnion Bearing Housing AD/BELL 412/13
Emergency Flotation System and Squib Valve AD/BELL 412/14 Amdt 1
Battery Cable Installation AD/BELL 412/15
Vertical Fin Spar Cap - CANCELLED AD/BELL 412/16
AM-SAFE Harness Buckle Assemblies AD/BELL 412/17
Engine Fuel Valve Electrical Connectors P/No MS3456W14S-5S AD/BELL 412/18
Emergency DC Bus Number One Feeder Circuit AD/BELL 412/19
Bolts P/N AN4-5A - Pylon Support AD/BELL 412/20
Fuel Cell Interconnect Tube AD/BELL 412/21
Main Transmission Spiral Bevel Gear AD/BELL 412/22
Electrical Wiring Harnesses AD/BELL 412/23
Main Rotor Pitch Link to Pitch Horn Bolt AD/BELL 412/24
Main Rotor Flight Control System Bolts AD/BELL 412/25
Bogus Pressure Gauge Emergency Floats P/N 212-073-905-1 AD/BELL 412/26
Tailboom Upper Longeron AD/BELL 412/27
Lower Planetary Spider Gear - CANCELLED AD/BELL 412/28
Tail Rotor Driveshaft Hangar Bearings AD/BELL 412/29
Swashplate Support Assembly AD/BELL 412/30
Fin to Tail Boom Junction AD/BELL 412/31
Main Driveshaft and Tail Rotor Drive Over-Temperature Indicators AD/BELL 412/32
Main Transmission Lower Planetary Spider AD/BELL 412/33
Swashplate Support AD/BELL 412/34
Tail Boom Doubler and Fin Spar Caps AD/BELL 412/35
Main Rotor Mast AD/BELL 412/36
Internal Hoist AD/BELL 412/37
Hydraulic Servo Actuator Shoulder Bolt AD/BELL 412/38
Tail Rotor Yoke and Tail Rotor Flapping Stop/Indicator AD/BELL 412/39 Amdt 1
Main Rotor Yoke AD/BELL 412/40
Tailboom Attachment Cap Angle AD/BELL 412/41
Main Hydraulic Servo Actuator Rod End Lock Washer AD/BELL 412/42
Tail Rotor Counterweight Bellcrank Retention Nut AD/BELL 412/43
Tail Rotor Blade Fwd Tip Weight Retention Block and Aft Tip Closure AD/BELL 412/44