412 Alert Service Bulletins


File Name
Date Posted
Description
  ASB_412-17-173.pdf 03-Mar-17 MAGNETIC BRAKE ASSEMBLY 204-001-376-003, INSPECTION AND REPAIR OF
  ASB_412-11-147-RC.pdf 22-Dec-16 EMERGENCY FLOTATION SYSTEM TUBE ASSY 412-073-820-101, REPLACEMENT OF
  ASB_412-11-147-RB.pdf 05-Oct-16 EMERGENCY FLOTATION SYSTEM TUBE ASSY 412-073-820-101, REPLACEMENT OF
  ASB_412-11-147-RA.pdf 29-Jul-16 EMERGENCY FLOATATION SYSTEM TUBE ASSY 412-073-820-101, REPLACEMENT OF
  ASB_412-16-172.pdf 25-Mar-16 TRANSMISSION OIL LINES 412-040-204-101 AND 412-040-200-101, INSPECTION AND REVISED CLAMPING OF
  ASB_412-16-171.pdf 22-Mar-16 INVERTER P/N 412-375-079-101 AND -103, REPLACEMENT OF
  ASB_412-15-170.pdf 20-Jan-16 SEAT BELT COMFORT CLIPS, REMOVAL OF
  ASB_412-15-169.pdf 18-Dec-15 LCR 100 ATTITUDE HEADING REFERENCE UNIT (AHRU) P/N 145130-7000 AND P/N 145130-7001 UPGRADE TO P/N 145130-7010
  ASB_412-15-161-RA.pdf 15-Oct-15 SB 412AC-2502 AIR CONDITIONER RELAY PANEL WIRING
  ASB_412-15-167.pdf 15-Sep-15 NO. 1 HYDRAULIC SYSTEM TUBE ASSEMBLY 212-076-433-001, REPLACEMENT OF
  ASB_412-15-168.pdf 15-Sep-15 FUEL CHECK VALVE 209-062-607-001, INSPECTION AND REPLACEMENT OF
  ASB_412-15-166.pdf 08-Sep-15 TAIL ROTOR FLIGHT CONTROL TUBE 212-001-055-101 AND BEARING DAS4-14A1-512, INSPECTION OF
  ASB_412-15-165.pdf 04-Sep-15 ENGINE OIL CHECK VALVE 209-062-520-001, INSPECTION AND REPLACEMENT OF
  ASB 412-15-162 Rev A .pdf 07-Aug-15 ROTORCRAFT FLIGHT MANUAL TEMPORARY REVISION FOR SINGLE AUTOPILOT OPERATIONS, INTRODUCTION OF.
  ASB_412-15-164.pdf 13-Mar-15 ROTORCRAFT FLIGHT MANUAL TEMPORARY REVISION, INTRODUCTION.
  ASB_412-15-163.pdf 22-Jan-15 HYDRAULIC SYSTEM #2 ¿ ADDITIONAL CLAMP, INSTALLATION.
  ASB_412-14-160.pdf 03-Sep-14 MAIN ROTOR DRIVE, ENGINE-TO-TRANSMISSION DRIVE SHAFT RETAINING NUTSINSPECTION/REPLACEMENT.
  ASB_412-12-151-RA.pdf 08-Jul-14 COLLECTIVE LEVER 412-010-408-101 FLIGHT HOUR PENALTY, INTRODUCTION.
  ASB_412-12-149-RB.pdf 19-Mar-14 SIMPLE PENDULUM ABSORBER BRACKETS 412-010-264-101 / -105, INSPECTION AND REWORK
  ASB_412-13-159.pdf 18-Nov-13 FLIGHT CONTROLS ¿ HYDRAULIC SERVOACTUATOR UNDERSIZED THREAD ROOT RADIUS.
  ASB_412-12-154-RA.pdf 27-Sep-13 CYCLIC CONTROLS FORE AND AFT POSITION SENSOR RIGGING, CHANGE OF
  ASB_412-13-158.pdf 23-Aug-13 TRANSMISSION AND GEARBOX OIL COOLER 209-062-501-005 SERIAL NUMBER VERIFICATION AND REPLACEMENT OF.
  ASB_412-13-157.pdf 13-May-13 COLLECTIVE LEVER AND SWASHPLATE ASSEMBLY RETAINING HARDWARE, INSPECTION
  ASB_412-13-156.pdf 25-Apr-13 INVERTER P/N 412-375-079-101, INSPECTION
  ASB_412-13-155.pdf 04-Feb-13 TAIL ROTOR BLADE P/N 212-010-750-ALL, INSPECTION
  ASB_412-12-152.pdf 18-Dec-12 ENGINE FIRE EXTINGUISHER BOTTLE STEM INSPECTION
  ASB_412-12-153.pdf 29-Nov-12 SWASHPLATE OUTER RING RETAINING BOLTS IN SAFETY, ONE TIME INSPECTION
  ASB_412-08-129-RA .pdf 11-Oct-12 HIGH LANDING GEAR AFT CROSSTUBES, P/N 412-321-104.
  ASB_412-12-INDEX.pdf 29-Feb-12 ALERT SERVICE BULLETIN INDEX
  ASB_412-11-148-RA.pdf 12-Dec-11 COLLECTIVE LEVER 412-010-408-101, 100 HOUR SPECIAL INSPECTION INTRODUCTION
  ASB_412-11-147.pdf 10-Oct-11 EMERGENCY FLOATATION SYSTEM, MANDATORY INSPECTION OF TUBE ASSEMBLY P/N 412-073-820-101.
  ASB_412-11-146.pdf 25-Aug-11 AHRS REALIGNMENT PROCEDURE PRIOR TO FLIGHT
  ASB_412-11-145.pdf 16-May-11 MAIN ROTOR BLADE EXPANDABLE BOLT PN 412-010-137-103 - SPACER PN SL54020-14; INSPECTION OF.
  ASB_412-11-144.pdf 10-Jan-11 ROD END ASSEMBLIES 412-310-400-101 AND 412-310-400-103, REPLACEMENT OF.
  ASB_412-10-142.pdf 09-Dec-10 DIRECTIONAL FLIGHT CONTROL BEARING P/N MS27643-4; INSPECTION AND REPLACEMENT OF.
  ASB_412-07-123_Rev_B.pdf 03-Dec-10 REVISION B TO ALERT SERVICE BULLETIN 412-07-123: TAIL ROTOR BLADE ASSEMBLY, INSPECTION OF.
  ASB_412-10-140_Rev_A.pdf 19-Aug-10 INSPECTION FOR GAP BETWEEN THE INTAKE FAIRING ASSEMBLY AND THE LOWER FORWARD FIREWALL HORIZONTAL FLANGE.
  ASB_412-10-143.pdf 05-Jul-10 HIGH FORWARD CROSSTUBES, P/N 205-050-403-031, 412-050-046-101, MANDATORY INSPECTION
  ASB_412-10-141.pdf 10-May-10 LOW SKID GEAR FWD CROSSTUBES P/N 212-320-103
  ASB_412-10-139.pdf 26-Jan-10 INSPECTION OF TRANSMISSION OIL LINE P/N 70-061L000V360A FOR CORRECT LENGTH.
  ASB_412-10-138.pdf 18-Jan-10 GEARBOX COWL DOOR HINGES, CRINPING OF.
  ASB_412-09-136_Rev_A.pdf 08-Dec-09 REVISION A TO ALERT SERVICE BULLETIN 412-09-136: TAIL ROTOR BLADE P/N 212-010-750-ALL, INSPECTION OF.
  ASB_412-09-137.pdf 30-Nov-09 MAIN ROTOR BLADE EXPANDABLE BOLT P/N 412-010-137-103
  ASB_412-08-131_Rev_B.pdf 02-Nov-09 REVISION B TO ALERT SERVICE BULLETIN 412-08-131; SWASHPLATE OUTER RING ASSEMBLY P/N 412-010-407-105, REDUCTION OF RETIREMENT LIFE.
  ASB_412-09-135.pdf 09-Oct-09 HIGH AFT CROSSTUBE ASSEMBLIES P/N 412-050-011-101, / -103, / -105, / -107, 412-050-045-105: MANDATORY INSPECTION
  ASB_412-09-134_Rev_B.pdf 29-Sep-09 REVISION "B" TO ALERT SERVICE BULLETIN 412-09-134: HIGH LANDING GEAR FWD CROSSTUBE P/N 212-321-103
  AA-08055_Rev_B.pdf 23-Sep-09 HIGH LANDING GEAR FORWARD CROSSTUBES P/N 212-321-103
  ASB_412-08-128_Rev._A.pdf 23-Apr-09 MAIN ROTOR YOKES PN 412-010-101-123, -127, -129, -133, REDUCTION IN AIRWORTHINESS LIFE FROM 5000 TO 4500 HOURS AND RE-IDENTIFICATION OF.
  ASB_412-09-133.pdf 18-Feb-09 INSPECTION/CHANGE OF RESTRAINT SYSTEM ASSEMBLY WITH INERTIA REEL AND MANUAL LOCK HANDLE
  ASB_412-09-132.pdf 13-Jan-09 MAIN ROTOR PYLON MOUNT ASSEMBLY P/N 204-031-927-105, REMOVE FROM SERVICE
  ASB_412-07-126 Rev A.pdf 09-Jan-09 REVISION "A" TO ALERT SERVICE BULLETIN 412-07-126: (FUEL CAPACITY DECAL REPLACEMENT)
  ASB_412-08-130.pdf 26-Jun-08 FLIGHT CONTROLS - HYDRAULIC SERVO ACTUATOR RECALL FOR UNDERSIZED RADIUS
  AA-07109 .pdf 19-May-08 AERONAUTICAL ACCESSORIES, INC. ASB NO. AA-07109
  ASB_Index_2008-412.pdf 04-Mar-08 ASB INDEX 2008-412
  ASB_412-07-127.pdf 05-Dec-07 CYCLIC FLIGHT CONTROL BEARING, P/N MS27643-4 ONE TIME INSPECTION AND REPLACEMENT OF
  ASB_412-07-125.pdf 05-Dec-07 INCORPORATION OF ROTOR SPEED LIMITATION
  ASB_412-07-124.pdf 02-Nov-07 AGB COUPLING - SHAFT BEARING - INSPECTION/REPLACEMENT OF
  ASB_412-07-122.pdf 10-Apr-07 DISC ASSEMBLY 412-340-610-101, INSPECTION OF
  ASB_412-07-121.pdf 28-Mar-07 ENGINE, P3 FILTER AND PNEUMATIC SYSTEM - INSPECTION OF
  ASB_412-06-120_Rev_A.pdf 21-Dec-06 POSSIBLE INTERFERENCE BETWEEN 212-040-229-001 TUBE ASSEMBLY AND 212-030-041-233 SUPPORT, MODIFICATION TO CORRECT
  ASB_412-06-119_Rev_A.pdf 28-Nov-06 INSTALLATION OF COMPRESSOR SAFETY STRAP
  ASB_412-06-118.pdf 08-Mar-06 FLOAT INFLATION VALVE SQUIB P/N 29022968, MISIDENTIFICATION OF
  ASB_412-05-117.pdf 02-May-05 TAIL ROTOR BLADE P/N 212-010-750-009 THROUGH -129, INSPECTION AND REWORK OF
  ASB 412-00-106 Rev D.pdf 01-Apr-05 TAIL ROTOR BLADE P/N 212-010-750-009 THROUGH -129 TIP BLOCK RETENTION MODIFICATION
  ASB 412-05-116.pdf 28-Feb-05 CROSS HEAD P/N 212-010-775-001, INSPECTION AND RECALL OF SPECIFIC SERIAL NUMBER PART
  ASB 412-05-115.pdf 09-Feb-05 AERONAUTICAL ACCESSORIES, INC. ASB NO. AA-03017 FOR EXTERNAL HOIST KITS
  ASB 412-04-114.pdf 06-Dec-04 TAIL ROTOR PITCH HORN ASSEMBLY P/N 212-011-708-105, REPLACEMENT OF
  ASB 412-03-112 Rev B.pdf 28-Sep-04 M/R SPINDLE ASSEMBLY P/N 412-010-156-105, 412-010-190-101, 412-010-190-103, AND 412-010-190-105, INSPECTION OF
  ASB 412-04-113.pdf 27-Apr-04 PRATT & WHITNEY CANADA SERVICE INFORMATION LETTER (PT6T-040) FUEL FLOW TRANSDUCER KIT REMOVAL, INTRODUCTION OF
  ASB 412-02-111.pdf 13-Dec-02 TAIL ROTOR BLADE ASSEMBLIES P/N 212-010-750-011/-113/-115, INSPECTION AND REWORK OF.
  ASB 412-00-99 Rev B.pdf 03-Oct-02 REVISION "B" TO ALERT SERVICE BULLETIN 412-00-99: INCREASED CAPACITY BATTERY (53 AH), INSTALLATION OF, AND EFIS KIT WIRING, RETROFIT OF.
  ASB 412-00-103 Rev A.pdf 10-Sep-02 REVISION "A" TO ALERT SERVICE BULLETIN 412-00-103: CARGO HOOK ONBOARD SYSTEMS P/N 528-002-00
  ASB 412-02-110 .pdf 04-Sep-02 SWASHPLATE AND SUPPORT ASSEMBLY, BOLT 204-011-463-001 TO A -109 RE-IDENTIFICATION OF.
  ASB 412-00-104 Rev A.pdf 20-Aug-02 REVISION "A" TO ALERT SERVICE BULLETIN 412-00-104: EFIS VOR INDICATION ANOMALY CORRECTION
  ASB 412-01-109.pdf 02-May-01 INTERFERENCE BETWEEN THE DUAL-LAMP SEARCHLIGHT AND FLIGHT CONTROLS, MODIFICATION TO CORRECT
  ASB 412-01-108.pdf 12-Apr-01 CHIP DETECTOR ASSEMBLY, TEDECO B3703
  ASB 412-99-97 REV A.pdf 12-Mar-01 REVISION "A" TO ALERT SERVICE BULLETIN 412-99-97: (HIGH LANDING GEAR AFT CROSSTUBE ASSEMBLY P/N 412-050-011-ALL AND P/N 412-050-045-105/-107/-107A, ASSIGNMENT OF A RETIREMENT LIFE)
  ASB 412-01-107.pdf 01-Feb-01 MAGNETIC BRAKE P/N 204-001-376-003, ONE TIME INSPECTION OF.
  ASB412-00-105.pdf 07-Nov-00 MAIN HYDRAULIC SERVO ACTUATOR ROD END LOCK WASHER, INSPECTION AND REPLACEMENT OF
  ASB 412-00-102 Rev A.pdf 21-Sep-00 TAIL ROTOR COUNTERWEIGHT BELLCRANK RETENTION NUT MS14145L6, INSTALLATION AND ONE TIME USE OF.
  ASB 412-00-101.pdf 29-Mar-00 COLLECTIVE LEVER PIN 412-010-422-101/-103, RETENTION BOLT NAS6604H5 OR 20-057-4-3H, INSPECTION OF.
  ASB 412-00-100.pdf 28-Mar-00 CAP ANGLE, P/N 212-030-191-001, INITIAL INSPECTION


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