427 Alert Service Bulletins


File Name
Date Posted
Description
  ASB_427-17-41.pdf 14-Feb-17 MAIN ROTOR EXPANDABLE BLADE BOLT 406- 310-103-101 / -103, INSPECTION OF
  ASB_427-15-38-RA.pdf 14-Nov-16 VERTICAL FIN 427-035-840-105 AND 427-035-840-109, INSPECTION OF
  ASB_427-16-40-RA.pdf 05-Aug-16 AIR CONDITIONER BLOWER MOTOR CONNECTOR, INSPECTION OF
  ASB_427-15-39.pdf 11-Jan-16 SEAT BELT COMFORT CLIPS, REMOVAL OF
  ASB_427-15-37.pdf 04-Sep-15 TRANSMISSION OIL CHECK VALVE 209-062-520-001, INSPECTION AND REPLACEMENT OF
  ASB_427-13-36.pdf 05-Aug-13 FIRE BOTTLE OUTLET TUBE PROTECTIVE CAP, P/N SC.625-24, INTRODUCTION
  ASB_427-11-INDEX.pdf 29-Feb-12 ALERT SERVICE BULLETIN INDEX
  ASB_427-11-35-RB.pdf 29-Aug-11 CLEVIS ASSEMBLY, HYDRAULIC SERVO ASSEMBLIES, P/N 206-076-062-109 AND 206-076-062-111
  ASB_427-10-34.pdf 09-Dec-10 DIRECTIONAL FLIGHT CONTROL BEARING P/N MS27643-4A; INSPECTION AND REPLACEMENT OF.
  ASB_427-07-18_Rev_B.pdf 30-Nov-10 REVISION B TO ALERT SERVICE BULLETIN 427-07-18: TAIL ROTOR BLADE, INSPECTION OF
  ASB_427-09-27.pdf 28-Apr-10 BHT 427 MM, CHAPTER 4, CORRECTION OF
  ASB_427-10-33.pdf 27-Apr-10 ENGINE, TRANSMISSION AND HYDRAULIC OIL SYSTEM MODIFICATION OF
  ASB_427-10-32.pdf 23-Mar-10 TAIL ROTOR BLADES P/N 427-016-001-109 AND 427-016-001-109L, INSPECTION OF.
  ASB_427-10-31.pdf 02-Mar-10 TAILBOOM ATTACHMENT HARDWARE, REPLACEMENT OF.
  ASB_427-10-30.pdf 17-Feb-10 CARGO HOOK EQUIPMENT KIT P/N 427-706-900-101 AND -109 IMPROVEMENT OF.
  ASB_427-06-15_Rev_A.pdf 20-Jan-10 REVISION A TO ALERT SERVICE BULLETIN 427-06-15: VERTICAL FIN TO TAIL ROTOR GEARBOX SUPPORT ATTACHMENT HARDWARE REPLACEMENT OF.
  ASB_427-09-29_Rev_A.pdf 24-Nov-09 REVISION A TO ALERT SERVICE BULLETIN 427-09-29: TAIL ROTOR DRIVESHAFT HANGER BEARING BRACKET P/N 427-044-223-101, REWORK OF.
  ASB_427-09-28.pdf 28-Oct-09 HYDRAULIC SERVOACTUATOR P/N 206-076-062-111, INSPECTION OF
  ASB_427-09-26_Rev A.pdf 01-Jun-09 TAIL ROTOR GEARBOX P/N 427-042-400-ALL AND TAIL ROTOR GEARBOX CASE ASSEMBLY P/N 406-040-406-ALL, ONE TIME INSPECTION
  ASB_427-09-25.pdf 08-Apr-09 STAKED BEARINGS, ONE-TIME INSPECTION
  ASB_427-09-24_Rev._A.pdf 31-Mar-09 ANTI-DRIVE LINK ASSEMBLY P/N 406-010-432-101, ONE TIME INSPECTION OF
  ASB_427-09-23.pdf 11-Mar-09 LEVER ASSEMBLY P/N 407-001-320-105 AND 407-001-320-109, ONE TIME INSPECTION OF
  ASB_427-08-22.pdf 27-Jun-08 HYDRAULIC PUMP DRIVESHAFT ASSEMBLY P/N 406-040-072-105, ONE TIME INSPECTION OF
  ASB_427-08-21.pdf 10-Apr-08 P3 FITTING - INSPECTION OF
  ASB_Index_2008-427.pdf 04-Mar-08 ASB INDEX 2008-427
  ASB_427-08-20.pdf 03-Mar-08 COLLECTIVE CONTROL IDLER LINK ASSEMBLY P/N 427-001-532-101 INSPECTION AND MODIFICATION OF
  ASB_427-07-19.pdf 05-Oct-07 TRANSMISSION CASE SET P/N 427-040-200-111 SURFACE FINISH, IMPROVEMENT OF
  ASB_427-07-17.pdf 10-Apr-07 DISC ASSEMBLY 407-340-340-103, INSPECTION OF
  ASB_427-07-16.pdf 27-Mar-07 CARGO HOOK STRESS CORROSION CRACKS
  ASB_427-06-14.pdf 10-Nov-06 BUS BAR, REPLACEMENT OF
  ASB_427-05-13.pdf 02-Jun-06 TURBOSHAFT ENGINE COMPRESSOR DISC INSPECTION OF AND RETAINING NUT REPLACEMENT
  ASB_427-01-04_Rev_A.pdf 03-Apr-06 ENGINE-TO-TRANSMISSION DRIVESHAFT ASSEMBLY 206-340-300-105, INSPECTION OF
  ASB_427-05-12_Rev_A.pdf 21-Nov-05 CLEVIS ASSEMBLY - HYDRAULIC SERVO ASSEMBLY, PART NUMBER 41011300 AND 41011700
  ASB 427-04-11.pdf 16-Jan-04 PRATT & WHITNEY CANADA PW207D TURBOSHAFT ENGINES AUTOMATIC LOW CYCLE FATIGUE CALCULATION VERIFICATION OF
  ASB 427-03-10.pdf 19-Dec-03 AIR SPEED LIMITATION DECAL P/N 427-020-671-121, -123, -125, -127 AND -129 INTRODUCTION OF
  ASB 427-03-09 .pdf 23-Jan-03 TAIL ROTOR GEARBOX CASE P/N 406-040-406-109 OIL FEED PASSAGE, PRESENCE OF AND ADDITION OF.
  ASB 427-02-08.pdf 30-Aug-02 CYCLIC CENTERING SWITCH, RELOCATION OF
  ASB 427-01-07.pdf 26-Nov-01 AUXILIARY FIN P/N 427-035-836-101/-102/-105 AND -106, HEIGHT REDUCTION OF
  ASB 427-01-05.pdf 12-Nov-01 FAA TYPE CERTIFICATION KIT P/N 427-706-019-101/-103 DEACTIVATION AND ADDITION OF DRAINAGE HOLES FOR COMMON CONFIGURATION
  ASB 427-01-06 .pdf 09-Nov-01 IN-LINE ELECTRICAL TERMINAL JUNCTIONS, REPLACEMENT OF
  ASB 427-01-03.pdf 09-Oct-01 AIR SPEED LIMITATION DECAL, REPLACEMENT OF P/N 427-020-671-109 AND 427-020-671-111 DECAL(S)
  ASB 427-01-02.pdf 11-Sep-01 HYDRAULIC SOLENOID "TEE FITTING" P/N AS1003W060404, TUBES P/N'S 427-080-058-101 AND 427-080-003-101 REPLACEMENT OF.
  ASB 427-01-01.pdf 20-Apr-01 AUXILIARY FIN UPPER TUNING WEIGHT 407-023-003-145, RELOCATION OF


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