412CF Technical Bulletins


File Name
Date Posted
Description
  TB_412CF-17-110.pdf 24-May-17 HYDRAULIC SYSTEM #1 AND #2 ACCUMULATOR P/N 212-076-007-003, REMOVAL OF
  TB_412CF-17-109.pdf 02-Mar-17 NEW TAIL ROTOR BLADE P/N 412-016-100-115, INTRODUCTION OF
  TB_412CF-05-81.pdf 12-Dec-16 TAILBOOM BULKHEAD REINFORCEMENT
  TB_412CF-16-108.pdf 17-Nov-16 ENGINE FUEL FILTER DRAIN SYSTEM REDUCER 412-061-033-101, INTRODUCTION OF
  TB_412CF-16-107.pdf 07-Nov-16 TAILBOOM VERTICAL FIN HARNESS ADDITIONAL CLAMPING
  TB_412CF-15-105.pdf 12-May-16 HUB AND SLEEVE ASSEMBLY 412-010-401, CONFIGURATION CHANGE AND UPGRADE
  TB_412CF-16-106.pdf 10-Feb-16 INTERMEDIATE GEARBOX OUTPUT QUILL COUPLING AND TAIL ROTOR COUPLINGS GREASE LEAK, PREVENTION OF
  TB_412CF-15-104.pdf 05-Jun-15 TAIL ROTOR GEARBOX INPUT QUILL LEAK, PREVENTION OF
  TB_412CF-14-103.pdf 15-Aug-14 NEW MAIN ROTOR MAST 412-040-366-ALL ASSEMBLY, INTRODUCTION
  TB_412CF-12-102.pdf 03-Jan-13 HYDRAULIC FLUID CONVERSION FROM MIL-PRF-5606 TO MIL-PRF-87257
  TB_412CF-12-100.pdf 09-May-12 ENGINE POWER SECTIONS, MIXING AND USE OF.
  TB_412CF-12-101.pdf 02-May-12 PILOT AND COPILOT COLLECTIVE STICK THROTTLES, MODIFICATION
  TB_412CF-10-94-RC.pdf 09-Apr-12 FUEL TRANSFER IMPROVEMENT
  TB_412CF-12-99.pdf 05-Apr-12 LATERAL FORCE GRADIENT ASSEMBLIES 212-001-034, CONFIGURATION CHANGE AND UPGRADE
  TB_412CF-12-98.pdf 05-Apr-12 FORE AND AFT FORCE GRADIENT ASSEMBLIES 212-001-035, CONFIGURATION CHANGE AND UPGRADE
  TB_412CF-10-94-RB.pdf 15-Nov-11 FUEL TRANSFER IMPROVEMENT
  TB_412CF-11-97.pdf 07-Apr-11 GENERATOR GROUNDING, IMPROVEMENT OF.
  TB_412CF-11-95.pdf 22-Mar-11 CDU SOFTWARE UPGRADE, VERSION 9.1 TO VERSION 9.3
  TB_412CF-11-96.pdf 22-Mar-11 NUMBER ONE ENGINE JACKSHAFT SUPPORT INSPECTION AND MODIFICATION OF.
  TB_412CF-10-94_Rev_A.pdf 20-Oct-10 REVISION A TO TECHNICAL BULLETIN 412CF-10-94; FUEL TRANSFER IMPROVEMENT
  TB_412CF-09-93.pdf 24-Nov-09 AFT CROSSTUBE ROCKING BEAM UPGRADE
  TB_412CF-09-91.pdf 18-Aug-09 TAIL ROTOR GEARBOX EXCLUDER HOUSING LEAK: PREVENTION OF
  TB_412CF-09-92.pdf 19-May-09 HOLES IN L/H MAIN BEAM WEB FOR USE WITH LEVELING JACKS, INTRODUCTION OF.
  TB_412CF-08-90.pdf 16-Jan-09 LINER P/N 412-040-102-103: INTRODUCTION OF
  TB_412CF-08-89.pdf 22-May-08 FUEL OVERFLOW DEFLECTOR UPGRADE
  TB_412CF-08-88.pdf 14-Mar-08 UPPER CREW DOOR HINGE STRUCTURE, REINFORCEMENT OF
  TB_412CF-07-86.pdf 11-Jan-08 CENTER ENGINE DECK MODIFICATION FOR USE ON OTHER AIRCRAF
  TB_412CF-07-87.pdf 03-Jan-08 ARM AND BEARING ASSEMBLY ALTERNATE BOLT NAS6604H35, USE OF
  TB_412CF-05-81_Rev_A.pdf 03-Jan-08 TAILBOOM BULKHEAD REINFORCEMENT
  TB_412CF-06-83_Rev_A.pdf 16-Jul-07 REVISION "A" TO TECHNICAL BULLETIN 412CF-06-83: IMPROVED BAGGAGE COMPARTMENT DOOR SEAL
  TB_412CF-07-85.pdf 11-Apr-07 POWER SECTION CASE DRAIN FITTING STANDARDIZATION
  TB_412CF-07-84.pdf 22-Jan-07 EXTERNAL MOUNT RESCUE HOIST ASSEMBLY BL-20200-400-2
  TB_412CF-06-82.pdf 03-Apr-06 IMPROVED MAST TORQUE SIGNAL CONDITIONER, INTRODUCTION OF
  TB_412CF-97-24_Rev_A.pdf 01-Feb-06 TAILBOOM ASSEMBLY UPGRADE TO LATER CONFIGURATION
  TB_412CF-98-30_Rev_A.pdf 19-Sep-05 INTRODUCTION OF PROCEDURES FOR ELIMINATION OF MAST SEAL LEAKS
  TB_412CF-05-80.pdf 29-Aug-05 AFT TOP COWLING REINFORCEMENT
  TB 412CF-05-79.pdf 23-May-05 BEARING AND LINER ASSEMBLIES P/N 204-010-433-001 AND P/N 204-011-443-001: INSTALLATION IMPROVEMENTS
  TB 412CF-04-78.pdf 22-Nov-04 SIMPLE PENDULUM ABSORBER ADDITIONAL WASHER, INTRODUCTION OF
  TB 412CF-04-77.pdf 12-Jul-04 TAIL ROTOR BLADE P/N 212-010-750-105, -107, -113, -115, -127 "NEW PAINT FINISH"
  TB 412CF-04-76.pdf 12-Jul-04 TRANSMISSION OIL PUMP 212-040-184-001, MODIFICATION OF
  TB 412CF-04-73.pdf 28-Jun-04 USE OF ALTERNATE MAIN ROTOR BLADE BOLT IN LIEU OF EXPANDABLE MAIN ROTOR BLADE BOLT
  TB 412CF-04-75.pdf 28-Jun-04 INTAKE SCREEN IMPROVEMENTS
  TB 412CF-04-72.pdf 05-Apr-04 OIL DRAIN VALVE P/N 209-062-010-001, POWERPLANT ACCESSORY GEARBOX, IMPROVED SECURITY OF SCREWS
  TB 412CF-03-65.pdf 07-Jan-04 MAIN BEAM LANDING GEAR SUPPORT MODIFICATION
  TB 412CF-03-71.pdf 09-Sep-03 TRANSMISSION OIL FILTER ASSEMBLY P/N 204-040-760-113: INTRODUCTION OF.
  TB 412CF-01-58 Rev A.pdf 08-Jul-03 REVISION A TO TECHNICAL BULLETIN 412CF-01-58: CONNECTOR REPLACEMENT OF NAVIGATION MAP DISPLAY
  TB 412CF-03-70.pdf 19-Jun-03 FLANGE ADAPTER P/N 412-040-634-101 AND 412-040-625-101, ELIMINATION OF RETIREMENT LIFE.
  TB 412CF-03-68 Rev A .pdf 12-Jun-03 REVISION A TO TECHNICAL BULLETIN 412CF-03-68: MAIN ROTOR HUB ASSEMBLY 412-010-100-ALL, MODIFICATION OF HARDWARE AND INSTALLATION PROCEDURE.
  TB 412CF-03-66 Rev A.pdf 03-Jun-03 REVISION "A" TO TECHNICAL BULLETIN 412CF-03-66: (REPLACEMENT OF LANDING LIGHT MECHANICAL RELAY ASSEMBLY WITH A SOLID-STATE SWITCH MOUNTED ON A PRINTED WIRING BOARD.
  TB 412CF-03-67.pdf 06-May-03 HUB AND SLEEVE ASSY. ELIMINATION OF PREMATURE WEAR TO DRIVE LINK 412-010-405-107/-109 AND HUB ASSY. 412-010-445-101
  TB 412CF-03-69.pdf 14-Apr-03 LOWER NOSE DOORS P/N 212-030-217-011 & 212-030-205-001 AND SEAL REPLACEMENT
  TB 412CF-02-63 .pdf 18-Feb-03 HYDRAULIC LINE INSTALLATION, IMPROVEMENT OF.
  TB 412CF-02-62.pdf 17-Jan-03 TRANSMISSION DEBRIS COLLECTOR ASSEMBLY P/N 212-040-146-001 TO -101FM, MODIFICATION OF.
  TB 412CF-02-64.pdf 10-Jan-03 TRANSMISSION OIL COOLER LINES P/N 412-040-243-101 & 412-040-244-101, INTRODUCTION OF
  TB 412CF-02-61 .pdf 07-Jun-02 CDU SOFTWARE UPGRADE, VERSION 8.0 TO VERSION 9.1
  TB 412CF-02-60.pdf 29-May-02 MAIN ROTOR BLADES IMPROVED EROSION SHIELD P/N 412-015-304-105, INTRODUCTION OF
  TB 412CF-96-08 Rev A.pdf 06-Nov-01 REVISION "A" TO TECHNICAL BULLETIN 412CF-96-08: HYDRAULIC SYSTEM #1 WIRING, MODIFICATION OF
  TB 412CF-01-59.pdf 06-Nov-01 KY-58 JUMPER ASSEMBLY
  TB 412CF-01-57.pdf 10-May-01 BACKSHELL REPLACEMENT OF AL-300
  TB 412CF-01-56.pdf 26-Apr-01 ENGINE POWER TURBINE GOVENOR LEVER RE-INDEXING, INTRODUCTION OF
  TB 412CF-01-55.pdf 19-Apr-01 IFF DIVERSITY MODE
  TB 412CF-01-54.pdf 21-Feb-01 ALIGNMENT: ENGINE TO TRANSMISSION
  TB 412CF-01-53.pdf 01-Feb-01 IMPROVED TAIL ROTOR PITCH LINKS
  TB 412CF-00-50.pdf 24-May-00 IMPROVED STATIC PITOT INSTALLATION, INCORPORATION OF
  TB 412CF-00-52.pdf 24-May-00 RESCUE HOIST 412-152-350 REPLACEMENT OF HOOK P/N BL-5740-11 WITH P/N HK-114-1
  TB 412CF-00-49.pdf 09-Mar-00 ELEVATOR CONTROL TUBE P/N 412-001-909-101 MODIFICATION
  TB 412CF-00-48.pdf 01-Mar-00 PILOT AND COPILOT COLLECTIVE STICK #1 THROTTLE GRIP, MODIFICATION OF


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