407 Alert Service Bulletins


File Name
Date Posted
Description
  ASB_407-16-114-RC.pdf 03-Mar-17 ENGINE, COMBUSTION ASSEMBLY - INSPECTION OF OUTER COMBUSTION CASE P/N M250-10404
  ASB_407-17-115.pdf 14-Feb-17 MAIN ROTOR EXPANDABLE BLADE BOLT 406- 310-103-101 / -103, INSPECTION OF
  ASB_407-16-114-RB.pdf 16-Jan-17 ENGINE, COMBUSTION ASSEMBLY - INSPECTION OF OUTER COMBUSTION CASE P/N M250-10404
  ASB_407-16-114-RA.pdf 08-Dec-16 ENGINE, COMBUSTION ASSEMBLY - INSPECTION OF OUTER COMBUSTION CASE P/N M250-10404
  ASB_407-16-112-RA.pdf 05-Aug-16 AIR CONDITIONER BLOWER MOTOR CONNECTOR, INSPECTION OF
  ASB_407-14-102-RC.pdf 04-May-16 ENGINE, FUEL AND CONTROL - OVERSPEED ADAPTER, INTRODUCTION OF
  ASB_407-16-113.pdf 12-Feb-16 TAIL ROTOR DRIVESHAFT SEGMENT ASSEMBLY, INSPECTION OF
  ASB_407-14-106-RA.pdf 09-Feb-16 FREEWHEEL ASSEMBLY OIL SUPPLY BLOCKAGE
  ASB_407-15-111.pdf 11-Jan-16 SEAT BELT COMFORT CLIPS, REMOVAL OF
  ASB_407-14-104-RA.pdf 03-Nov-15 ENGINE, TURBINE ASSEMBLY - INSPECTION OF 3RD STAGE TURBINE WHEELS 6898663
  ASB_407-15-108-RB.pdf 03-Sep-15 MAIN ROTOR MAST 407-040-038-123, INSPECTION AND REPAIR OF
  ASB_407-15-110.pdf 14-Jul-15 PYLON SUPPORT 407-030-425-101 AND STOP SUPPORT 407-030-428-101, INSPECTION AND REWORK OF.
  ASB_407-15-109.pdf 03-Mar-15 FUEL CELL 407-362-632-105, RECALL OF.
  ASB_407-15-107.pdf 03-Mar-15 FUEL VENT HOSE, RECALL OF.
  ASB_407-14-105.pdf 03-Sep-14 ENGINE, COMPRESSOR ASSEMBLY - INSPECTION OF FRONT SUPPORT P/N M250-10051, M250-10052, M250-10059 AND M250-10060.
  ASB_407-14-103.pdf 21-May-14 ENGINE - SPUR ADAPTER GEARSHAFT, RETAINING RING.
  ASB_407-13-101.pdf 20-Nov-13 ENGINE FUEL AND CONTROL ¿ ELECTRONIC CONTROL UNIT ASSEMBLY.
  ASB_407-13-100.pdf 20-Nov-13 ENGINE, FUEL AND CONTROL - GOODRICH ELECTRONIC CONTROL UNIT (ECU) - OVERSPEED PROTECTION SYSTEM (OSPS) POWER SUPPLY DESIGN IMPROVEMENT.
  ASB_407-13-99-RA.pdf 24-Jul-13 ENGINE, ASSEMBLY - INSPECTION OF MAG PLUGS TO DETECT METAL GENERATION FROM THE NO. 2 BEARING
  ASB_407-01-45-RB.pdf 23-Apr-13 206-340-300-107 ENGINE TO TRANSMISSION SHAFT 1250-HOUR OVERHAUL, INTRODUCTION
  ASB_407-12-98.pdf 24-Oct-12 PLANETARY PINION GEAR P/N 406-040-095-101, INSPECTION
  ASB_407-07-80-RA.pdf 23-Apr-12 TAILBOOM ASSEMBLY 407-030-801-107, AND 407-530-014-101/ -103, NEW INSPECTION REQUIREMENTS.
  ASB_407-11-95-RC.pdf 20-Apr-12 UPPER LEFT LONGERON (CHANNEL) P/N 206-031-314-037/ -177 AND SPARE ASSEMBLY P/N 206-031-314-219B, INSPECTION
  ASB_407-12-INDEX.pdf 29-Feb-12 ALERT SERVICE BULLETIN INDEX
  ASB_407-11-96-RB.pdf 29-Aug-11 CLEVIS ASSEMBLY, HYDRAULIC SERVO ASSEMBLIES, P/N 206-076-062-105 AND 206-076-062-107
  ASB_407-11-97.pdf 30-Jun-11 CREW SEAT CLIP RETAINERS, INSTALLATION OF.
  ASB_407-07-79_ Rev_ A.pdf 08-Jun-11 FREEWHEEL AFT SEAL 209-340-265-103, INSTALLATION PROCEDURES AND IMPROVEMENT OF AND OIL DAM RING 406-040-547-103, ONE TIME VERIFICATION.
  ASB_407-11-94.pdf 08-Feb-11 MAIN ROTOR MAST 407-040-038-101, -105, -109, -111, -111R, -111T, OR -111T1, INSPECTION OF.
  ASB_407-07-81_Rev_B.pdf 30-Nov-10 REVISION B TO ALERT SERVICE BULLETIN 407-07-81: TAIL ROTOR BLADE, INSPECTION OF
  ASB 407-99-25.pdf 20-Oct-10 MAIN ROTOR PITCH HORN 407-010-103-101 AND ATTACHING HARDWARE, INSPECTION OF.
  ASB_407-10-92_Rev_B.pdf 09-Sep-10 REVISION "B" TP ALERT SERVICE BULLETIN 407-10-92 (TAIL ROTOR BLADES 406-016-100-119 AND 407-016-001-101, INSPECTION OF).
  ASB_407-10-93_Rev_A.pdf 08-Sep-10 REVISION A TO ALERT SERVICE BULLETIN 407-10-93:TAILBOOM ATTACHMENT HARDWARE, REPLACEMENT OF.
  ASB_407-09-91.pdf 21-Dec-09 HOSE ASSEMBLY P/N 70-079H100F210, ONE TIME INSPECTION OF.
  ASB_407-09-90.pdf 03-Nov-09 HYDRAULIC SERVOACTUATOR P/N 206-076-062-105 AND -107, INSPECTION OF.
  ASB_407-09-89.pdf 11-May-09 TAIL ROTOR GEARBOX P/N 406-040-400-ALL AND TAIL ROTOR GEARBOX CASE ASSEMBLY P/N 406-040-406-ALL, ONE TIME INSPECTION OF.
  ASB_407-09-88.pdf 08-Apr-09 STAKED BEARINGS, ONE-TIME INSPECTION
  ASB_407-09-87.pdf 28-Mar-09 ANTI-DRIVE LINK ASSEMBLY P/N 406-010-432-101, ONE TIME INSPECTION OF
  ASB_407-09-86.pdf 19-Mar-09 VERTICAL FIN ASSEMBLY 206-020-113-233, INSPECTION OF
  ASB_407-09-85.pdf 11-Mar-09 LEVER ASSEMBLY P/N 407-001-320-105 AND 407-001-320-109, ONE TIME INSPECTION OF
  ASB_407-08-82_Rev._A.pdf 29-Jan-09 NG LIMITATION AT A GIVEN TEMPERATURE, ABOVE 10000 FT DECAL, ADDITION OF
  407-MM Rev 25 29-Sep-2008.pdf 13-Oct-08 BHT 407 MM REV 25
  ASB_407-08-84.pdf 13-Oct-08 TAILBOOM ASSEMBLY 407-030-801-201, 407-030-801-203 AND 407-030-801-205, NEW INSPECTION REQUIREMENTS
  ASB_407-08-83.pdf 01-Jul-08 HYDRAULIC PUMP DRIVESHAFT ASSEMBLY 406-040-072-105, ONE TIME INSPECTION
  ASB_Index_2008-407.pdf 04-Mar-08 ASB INDEX 2008-407
  ASB_407-01-48_Rev_C.pdf 10-Oct-07 TAILBOOM ASSEMBLY 407-030-801-101, /-105, /-107 MODIFICATION OF, AND NEW AIRWORTHINESS LIMITATION/INSPECTION SCHEDULE, INTRODUCTION OF
  ASB_407-07-77_Rev_A.pdf 04-Sep-07 TAILBOOM 407-030-801-107 & 407-530-014-101/ -103, WITH UPPER SKIN 407-030-801-157 REPLACED
  ASB_407-07-78.pdf 17-Apr-07 EMERGENCY PUSHOUT WINDOWS P/N 407-561-113, 407-561-114, 407-561-121, 407-561-122, 407-561-125, 407-561-126 (STC SR01687AT)
  ASB_407-07-76.pdf 10-Apr-07 DISC ASSEMBLY 407-340-340-103, INSPECTION OF
  ASB_407-07-75.pdf 27-Mar-07 CARGO HOOK STRESS CORROSION CRACKS
  ASB_407-06-74.pdf 22-Dec-06 PRODUCT IMPROVEMENT - DRIVESHAFT INSTALLATION TOOL SKSP1425-1
  ASB_407-06-73.pdf 12-Oct-06 ENGINE, TURBINE ASSEMBLY - POWER TURBINE OUTER SHAFT
  ASB_407-06-72.pdf 27-Sep-06 HORIZONTAL STABILIZER 407-023-801-109, INSPECTION AND REPLACEMENT OF
  ASB_407-04-63_Rev_B.pdf 19-Sep-06 TAIL ROTOR DRIVESHAFT BEARING 407-340-339-101, REPLACEMENT OF
  ASB_407-06-71.pdf 10-Jan-06 MAIN ROTOR HYDRAULIC SERVO ACTUATOR PART NUMBER VERIFICATION OF
  ASB_407-05-70_Rev_A.pdf 21-Nov-05 CLEVIS ASSEMBLY - HYDRAULIC SERVO ASSEMBLY, PART NUMBER 41011300 AND 41011400
  ASB_407-05-69.pdf 07-Jul-05 ENGINE, FUEL AND CONTROL - HYDROMECHANICAL UNIT (HMU) PROCEDURES FOR CHECKING P1 NOZZLE SCREEN FOR CONTAMINATION
  ASB_407-05-68.pdf 30-Jun-05 ROLLS-ROYCE 250-C47B ENGINE GEARBOX ASSEMBLY - INSPECTION AND REWORK OF GEARBOX HOUSING
  ASB_407-05-67.pdf 29-Jun-05 POWER TURBINE RPM (NP) STEADY STATE OPERATION AVOIDANCE, INTRODUCTION OF
  ASB_407-04-65_Rev_A.pdf 28-Jun-05 POWER TURBINE RPM (NP) STEADY STATE OPERATION AVOIDANCE, INTRODUCTION OF
  ASB 407-04-66 Rev A.pdf 13-Jan-05 FREEWHEEL AFT BEARING CAP 406-040-509-101, INSPECTION AND REWORK OF
  ASB 407-04-64 Rev A.pdf 07-Sep-04 ENGINE, TURBINE SECTION - INSPECTION OF ROLLS-ROYCE MODEL 250-C47B THIRD-STAGE TURBINE WHEELS (6898663)
  ASB 407-01-47 Rev C.pdf 20-Feb-04 REVISION C TO ALERT SERVICE BULLETIN 407-01-47 (TAIL ROTOR DRIVESHAFT BEARING 406-040-339-ALL, 407-340-339-101/-103 AND /-107  INSPECTION AND LUBRICATION OF.)
  ASB 407-01-44 Rev D.pdf 20-Feb-04 OIL COOLER BLOWER HANGER BEARING 407-340-339-103  REPLACEMENT OF.
  ASB 407-04-62 .pdf 08-Jan-04 ROLLS-ROYCE CORPORATION 250-C47B ENGINE, FUEL AND CONTROL  HYDROMECHANICAL UNIT (HMU)  INCORPORATE DUAL ELEMENT PLA POTENTIOMETER
  ASB 407-03-61.pdf 20-Nov-03 ROLLS-ROYCE 250-C47B ENGINE, TURBINE ASSEMBLY - INSPECTION OF 4TH STAGE TURBINE WHEELS (23066744)
  ASB 407-03-59.pdf 15-Oct-03 ALL FORWARD AND AFT CROSSTUBE ASSEMBLIES, PART NUMBERS AS DESCRIBED BELOW, ASSIGNMENT OF RIN (RETIREMENT INDEX NUMBER) TO
  ASB 407-03-60.pdf 15-Oct-03 ROLLS-ROYCE CORPORATION 250-C47B ENGINE, FUEL AND CONTROL - RELEASE OF NEW ELECTRONIC CONTROL UNIT (ECU)
  ASB 407-03-58.pdf 16-Jun-03 PART I: ENGINE, FUEL AND CONTROL - ONE TIME INSPECTION OF POWER LEVER (PLA) SIGNAL OF THE HMU. PART II: ENGINE, FUEL AND CONTROL - INSPECTION OF HMU DRIVE SPLINES AND POWER LEVER ANGLE (PLA) SIGNAL.
  ASB 407-03-57 rev B.pdf 06-Feb-03 REVISION "B" TO ALERT SERVICE BULLETIN 407-03-57: (TAIL ROTOR GEARBOX CASE 406-040-406-109, /-113 OIL FEED HOLE FOR DUPLEX BEARING 406-040-432-103, ADDITION OF).
  ASB 407-02-50 Rev A.pdf 24-Jan-03 REVISION "A" TO ALERT SERVICE BULLETIN 407-02-50: AFT CROSSTUBE ASSEMBLY, 407-050-202-101 HIGH SKID GEAR AND EMERGENCY FLOATATION LANDING GEAR, INSPECTION OF; AND NEW CROSSTUBE ASSEMBLY -103, INTRODUCTION OF.
  ASB 407-00-36 Rev A.pdf 15-Jan-03 170 AMP MAXIMUM CONTINUOUS ELECTRICAL LOAD LIMIT FOR OPERATIONS ABOVE 10,000' DENSITY ALTITUDE, INTRODUCTION OF
  ASB 407-02-56.pdf 06-Dec-02 TAIL ROTOR BLADES 407-016-001-101 AND 406-016-100-119 ONE TIME LEAK CHECK
  ASB 407-02-55.pdf 29-Oct-02 ONE TIME CHECK OF SWASHPLATE DRIVE LINK CUP WASHERS, P/N 406-010-412-101
  ASB 407-02-54 Rev A.pdf 17-Oct-02 REVISION "A" TO ALERT SERVICE BULLETIN 407-02-054: (OIL COOLER INLET AIRFLOW - IMPROVEMENTS TO)
  ASB 407-02-53.pdf 13-May-02 TAILBOOM ASSEMBLY 407-030-801-105, /-107 AND TAIL ROTOR GEARBOX SUPPORT CASTING 406-030-121-105, INSPECTION OF.
  ASB 407-99-32 Rev A.pdf 12-Apr-02 REVISION "A" TO ALERT SERVICE BULLETIN 407-99-32: (HORIZONTAL STABILIZER-SLATS, 407-023-002-117, REPLACEMENT OF)
  ASB 407-02-52.pdf 12-Apr-02 HORIZONTAL STABILIZER SLATS, 407-023-001-103, INTRODUCTION OF
  ASB 407-02-51.pdf 04-Apr-02 COMPRESSOR WASH TUBING ASSEMBLY AND CLEARANCE CHECK OF FIREWALL COVERS WITH MAIN DRIVESHAFT, REPLACEMENT OF
  ASB 407-02-49 Rev A.pdf 28-Mar-02 REVISION "A" TO ALERT SERVICE BULLETIN 407-02-49: (DOWN WIND HOVER LIMITATION, INTRODUCTION OF.)
  ASB 407-99-26 Rev C.pdf 01-Mar-02 REVISION "C" TO ALERT SERVICE BULLETIN 407-99-26: (TAILBOOM 407-030-801-101, /-105, INSPECTION OF.)
  ASB 407-97-14 Rev C.pdf 14-Dec-01 REVISION "C" TO ALERT SERVICE BULLETIN 407-97-14, TAIL ROTOR GEARBOX P/N 406-040-400-ALL, TORQUE CHECK AND INSTALLATION PROCEDURES, MODIFICATION OF.
  ASB 407-01-45 Rev A.pdf 21-Nov-01 REVISION "A" TO ALERT SERVICE BULLETIN 407-01-45: (206-340-300-107 ENGINE TO TRANSMISSION SHAFT 1250-HOUR OVERHAUL, INTRODUCTION OF)
  ASB 407-00-35 Rev A.pdf 15-Nov-01 HANGER BEARINGS 406-040-339-ALL AND 407-340-339-103 INSPECTION AND LUBRICATION OF
  ASB 407-98-23 Rev. A.pdf 26-Oct-01 REVISION "A" TO ALERT SERVICE BULLETIN 407-98-23: (OIL COOLER BLOWER FAN HANGER BEARING 407-340-339-101/103 AND ROYCO 13 PER MIL-G-25013, INTRODUCTION OF)
  ASB 407-01-46.pdf 16-Oct-01 REDUCER AS5174D0604 & TUBE ASSEMBLY 407-076-018-101 TO ENSURE UNRESTRICTED HYDRAULIC FLUID FLOW THROUGH SOLENOID VALVE, INTRODUCTION OF
  ASB 407-01-43.pdf 08-Jun-01 ONE TIME INSPECTION OF THE ENGINE TO TRANSMISSION SHAFT 206-340-300-105
  ASB 407-01-39 Rev A.pdf 01-Jun-01 REVISION "A" TO ALERT SERVICE BULLETIN 407-01-39: BRACKET 407-040-321-101/103, INSPECTION OF.)
  ASB 407-00-34 Rev A.pdf 01-Jun-01 REVISION "A" TO ALERT SERVICE BULLETIN 407-00-34: (ROLLS-ROYCE ALLISON 250-C47B ENGINE SELF-SEALING MAGNETIC CHIP DETECTORS, INSPECTION OF.
  ASB 407-01-41.pdf 24-May-01 FUEL FILLER CAP ASSEMBLY-SHIMMING AND ELECTRICAL BONDING PROCEDURES, INTRODUCTION OF
  ASB 407-01-42.pdf 24-May-01 AFT FUEL CELL FEED LINE, INSPECTION OF / AFT FUEL CELL STANDPIPE, REPLACEMENT OF.
  ASB 407-01-40.pdf 15-Mar-01 RESCUE HOIST, BL-16600 SERIES, BREEZE EASTERN CUSTOMER ALERT BULLETIN CAB-100-58
  ASB 407-00-38.pdf 19-Dec-00 FUEL VENT LINE, REPLACEMENT OF
  ASB 407-99-33 REV B.pdf 04-Dec-00 REVISION "B" TO ALERT SERVICE BULLETIN 407-99-33, VNE RESTORATION TO 140 KIAS, INTRODUCTION OF
  ASB 407-00-37.pdf 14-Nov-00 ROLLS-ROYCE 250-C47B ENGINE, REPLACEMENT OF COMPRESSOR SCROLL 23066737 AND 23072848
  ASB 407-99-31.pdf 26-Jan-00 FADEC DIRECT REVERSION TO MANUAL SYSTEM (DRTM), UPGRADE TO
  ASB 407-98-24.pdf 23-Sep-99 ENGINE FAIRING, RH DOOR HINGE MODIFICATION
  ASB 407-98-22.pdf 23-Sep-99 CH. 4 AIRWORTHINESS LIMITATION SCHEDULE CHANGES
  ASB 407-98-21.pdf 23-Sep-99 ENGINE HMU DRIVESPLINE INSPECTION
  ASB 407-98-20.pdf 23-Sep-99 HYDRAULIC RELIEF VALVE REPLACEMENT
  ASB 407-98-19.pdf 23-Sep-99 ENGINE TO TRANSMISSION DRIVESHAFT REPLACEMENT
  ASB 407-98-18.pdf 23-Sep-99 DOOR LATCH ASSY, INSPECTION OF
  ASB 407-98-17 A .pdf 23-Sep-99 VERTICAL FIN ASSY, INSPECTION AND REWORK
  ASB 407-98-16.pdf 23-Sep-99 CARGO HOOK KIT MODIFICATION
  ASB 407-97-15.pdf 23-Sep-99 ENGINE FADEC ECU REPLACEMENT
  ASB 407-97-13.pdf 23-Sep-99 TAILROTOR DRIVESHAFT DISC PACK TORQUE CHECK AND INSPECTION
  ASB 407-97-12.pdf 23-Sep-99 WARNING HORNS: FADEC FAIL, ENGINE OUT, AND LOW ROTOR RPM, REPLACEMENT
  ASB 407-97-11.pdf 23-Sep-99 SWASHPLATE DUPLEX BEARING, INTRODUCTION OF
  ASB 407-97-10.pdf 23-Sep-99 MAIN ROTOR PITCH LINK RETAINING HARDWARE, REPLACEMENT
  ASB 407-97-09 A .pdf 23-Sep-99 ALLISON 250 C47B ENGINE FADEC, NEW CONFIGURATION (FAA)
  ASB 407-97-08.pdf 23-Sep-99 ALLISON 250-C47B ENGINE FADEC, NEW CONFIGURATION
  ASB 407-97-07 .pdf 23-Sep-99 TAILROTOR DRIVE SHIMMING PROCEDURE, INTRODUCTION OF
  ASB 407-99-27 Rev A.pdf 23-Sep-99 RESTORATION OF 130 KIAS VNE
  ASB 407-99-30.pdf 23-Sep-99 DOOR LATCH BASEPLATE ASSEMBLY REPLACEMENT
  ASB 407-99-28.pdf 23-Sep-99 ENGINE FADEC ECU SOFTWARE UPGRADE, VERSION 5.202
  ASB 407-99-29.pdf 23-Sep-99 CREW SEAT BELT REPLACEMENT


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