407 Technical Bulletins


File Name
Date Posted
Description
  TB_407-16-121.pdf 10-May-17 HYDRAULIC FLUID CONVERSION FROM MILPRF- 5606 TO MIL-PRF-87257
  TB_407-17-124.pdf 19-Apr-17 FREEWHEEL ASSEMBLY OIL SUPPLY SYSTEM FITTING, INTRODUCTION OF
  TB_407-14-108-RA.pdf 19-Apr-17 GSC46 ENGINE SIGNAL CONDITIONER, IMPROVEMENT OF
  TB_407-14-109_Rev_A.pdf 16-Mar-17 AFT ENGINE FIREWALL ASSEMBLY, INSPECTION, REPAIR, AND MODIFICATION OF, FOR ENHANCED STIFFNESS
  TB_407-17-123.pdf 10-Feb-17 COMPOSITE INLET COWLING, RETROFIT OF
  TB_407-17-122.pdf 12-Jan-17 SWASHPLATE BOOT INSTALLATION, IMPROVEMENT OF
  TB_407-16-119-RA.pdf 08-Dec-16 ALTERNATE LUBRICANT AERIOL THIXO SYN AVIATION GREASE (C-172) AND 406-310-405-105 BEARING, INTRODUCTION OF
  TB_407-16-120-RA.pdf 22-Nov-16 HYDRAULIC PRESSURE SWITCH 205-076-044- 007, INSPECTION AND ADDITION OF SAFETY WIRE
  TB_407-14-111-RB.pdf 04-May-16 ENGINE FADEC SOFTWARE V5.400, INTRODUCTION OF
  TB_407-15-115-RC.pdf 23-Mar-16 FADEC MODE SWITCH SPACER, INSTALLATION OF
  TB_407-14-114.pdf 19-Oct-15 ENGINE AFT COMBUSTION DRAIN VALVE ASSEMBLY, REMOVAL OF
  TB_407-15-116.pdf 17-Sep-15 CARBON FIBER INLET COWLING 407-064-004-101 / -103, NUTPLATES 90-104CXX-X REWORK OR REPLACEMENT OF
  TB_407-14-113.pdf 08-Oct-14 FUEL SIGNAL CONDITIONER 407-375-016-103, RETROFIT OF.
  TB_407-14-112.pdf 07-Aug-14 GARMIN G1000H SOFTWARE P/N 006-B1237-09, INTRODUCTION OF.
  TB_407-14-111-RA.pdf 23-Jul-14 ENGINE FADEC SOFTWARE V5.400, INTRODUCTION OF.
  TB_407-14-110.pdf 29-May-14 ADDITION OF HOLES IN SUPPORTS 206-033-311-017, -018 TO EASE THE REMOVAL/INSTALLATION OF THE TAILBOOOM ASSEMBLY.
  TB_407-14-109.pdf 04-Apr-14 AFT ENGINE FIREWALL ASSEMBLY, INSPECTION, REPAIR, AND MODIFICATION OF, FOR ENHANCED STIFFNESS.
  TB_407-14-108.pdf 19-Feb-14 GSC46 ENGINE SIGNAL CONDITIONER, IMPROVEMENT OF
  TB_407-14-107.pdf 13-Feb-14 FADEC/ECU MAINTENANCE SWITCH (REF. DESIGNATOR 1S13), RELOCATION OF.
  TB_407-14-106.pdf 08-Jan-14 MODIFICATION OF THE COMPOSITE INDUCTION COWL 407-064-004-101 TO ELIMINATE INTERFERENCE WITH THE SNOW DEFLECTORS.
  TB_407-13-105.pdf 05-Dec-13 407GX NOSE CONSOLE SIDE COVER SCREWS, RETROFIT OF.
  TB_407-13-104.pdf 26-Jun-13 IMPROVED CORROSION PROTECTION TO ROOF ASSEMBLY AND REPAIR INSTRUCTIONS, INTRODUCTION OF.
  TB_407-12-97-RA.pdf 20-May-13 SOLID MACHINED ALUMINUM SHIMS UNDER TRANSMISSION SUPPORT BEAMS, INSTALLATION
  TB_407-13-103.pdf 04-Mar-13 ENGINE OIL COOLER TEMPERATURE REGULATING VALVE, RE-IDENTIFICATION AND RETROFIT OF.
  TB_407-12-102.pdf 09-Nov-12 SEAT BACK, SEAT BOTTOM CUSHIONS REUPHOLSTERING, INTRODUCTION
  TB_407-12-101.pdf 30-Oct-12 FUEL TRANSFER PUMP AND CENTRIFUGAL BOOST PUMP CANISTER, UPGRADE
  TB_407-12-100.pdf 01-Oct-12 IMPROVED RAM AIR PLENUM ASSEMBLIES P/N 407-070-211-103/ -104 AND STIFFENERS P/N 407-030-202-309/ -310, INTRODUCTION
  TB_407-12-99.pdf 13-Sep-12 RE-IDENTIFICATION OF 406-310-404-101 ROD-END AND 406-010-416-101 CLEVIS, AS USED IN 406-010-413-117/ -131/ -137 MAIN ROTOR PITCH LINK ASSEMBLY.
  TB_407-12-98.pdf 23-Aug-12 AUXILIARY FINS ASSEMBLY P/N 407-023-003-ALL AND HORIZONTAL STABILIZER ASSEMBLY P/N 407-023-801-ALL, MODIFICATION
  TB_407-12-96-RA.pdf 22-Jun-12 AFT FUSELAGE UPPER LEFT LONGERON ASSEMBLY P/N 206-031-314-237B, INTRODUCTION
  TB_407-01-34-RA.pdf 09-Apr-12 PYLON SIDE BEAMS P/N 407-010-201-105 AND P/N 407-010-203-105, INSTRUCTION FOR RETURNING TO SERVICE
  TB_407-12-97.pdf 08-Mar-12 SOLID MACHINED ALUMINUM SHIMS UNDER TRANSMISSION SUPPORT BEAMS, INSTALLATION
  TB_407-12-INDEX.pdf 29-Feb-12 TECHNICAL BULLETIN INDEX
  TB_407-03-51-RA.pdf 08-Feb-12 HUB FRAHM ASSEMBLY 407-010-150-ALL, REMOVAL OF
  TB_407-11-95.pdf 15-Dec-11 STARTER-GENERATOR 206-062-200-141, INTRODUCTION
  TB_407-11-94.pdf 24-Oct-11 LITTER DOOR SEAL IMPROVEMENT, INSTALLATION
  TB_407-10-92_Rev_A.pdf 15-Dec-10 REVISION A TO TECHNICAL BULLETIN 407-10-92: AIRFRAME PRODUCTION SHIM RECORDS, RE-ISSUE OF.
  TB_407-10-93.pdf 03-Dec-10 NEW LCD TEST SWITCH FOR COMMAND BIT CHECK, INSTALLATION OF.
  TB_407-10-91.pdf 01-Nov-10 DETENT P/N 407-001-133-103, GRIP ASSEMBLY P/N 407-001-134-103 AND SWITCH BOX ASSEMBLY P/N 407-001-135-103, INTRODUCTION OF
  TB_407-09-88_Rev_A.pdf 30-Aug-10 REVISION A TO TECHNICAL BULLETIN 407-09-88 (PITCH HORN 406-012-108-ALL AND 407-012-112-101 RECURRING TORQUE CHECK, INTRODUCTION OF.)
  TB_407-10-90.pdf 02-Jun-10 BAGGAGE DOOR 206-031-312-119/-123 SEAL MODIFICATION, INTRODUCTION OF.
  TB_407-09-89.pdf 30-Nov-09 SPANNER NUT P/N MS172244, INSPECTION OF.
  TB_407-09-87.pdf 23-Sep-09 INLET COWL DOOR HINGE PIN, CRIMPING OF.
  TB_407-07-75_Rev_B.pdf 31-Aug-09 REVISION B TO TECHNICAL BULLETIN 407-07-75:FADEC ECU EMC-35 WITH REVERSIONARY GOVERNOR, INTRODUCTION OF.
  TB_407-09-86.pdf 02-Jun-09 HYDRO MECHANICAL UNIT BRACKET ASSEMBLY 206-063-719, BEARING REPLACEMENT
  TB_407-04-60_Rev._B.pdf 02-Mar-09 TRANSMISSION ASSEMBLY AND TAIL ROTOR GEARBOX OVERHAUL INTERVAL, INCREASE OF.
  TB 407-08-85.pdf 08-Jan-09 FUEL TRANSFER LIGHT DELAY RELAYS, INSTALLATION OF
  TB_407-08-84.pdf 07-Oct-08 AFT CROSSTUBE ROCKER BEAM SUPPORTS BHT P/N 400-052-006-101, 400-052-006-103 AND AERONAUTICAL ACCESSORIES INC. (AAI) SUPPORT P/N 407-729-101, MODIFICATION OF.
  TB-407-08-83.pdf 22-May-08 ENCODING ALTIMETER RETROFIT
  TB_407-08-82.pdf 19-May-08 TRANSMISSION OIL PUMP P/N 406-340-100-101 BEARING REPLACEMENT PROCEDURE, INTRODUCTION OF
  TB_407-08-81.pdf 15-Jan-08 CONTACT ENHANCER STABILANT 22, INTRODUCTION OF
  TB_407-07-80.pdf 08-Nov-07 PITCH HORN 407-010-103-113, REPAIR OF
  TB_407-07-79.pdf 01-Nov-07 ADJUSTABLE PEDAL ASSEMBLY 407-001-012-101, INTRODUCTION OF
  TB_407-07-78.pdf 18-Oct-07 AFT FUSELAGE BULKHEAD 407-030-027-101 AT FS 231.4, INTRODUCTION OF
  TB_ 407-05-69_Rev A.pdf 24-Jul-07 REVISION "A" TO TECHNICAL BULLETIN 407-05-69: (IMPROVED FREEWHEEL AFT SEAL P/N 209-340-265-103, INTRODUCTION OF)
  TB_407-07-77.pdf 04-Jun-07 IMPROVED CAUTION/WARNING PANEL 407-375-015-111, INTRODUCTION OF
  TB_407-05-63_Rev_B.pdf 18-May-07 ROTOR BRAKE MODIFICATION KIT 407-704-022-101, INSTALLATION OF
  TB_407-05-71_Rev_A.pdf 18-May-07 ENGINE-TO-TRANSMISSION DRIVESHAFT ASSEMBLY 407-340-310-101, INTRODUCTION OF
  TB_407-07-76.pdf 27-Mar-07 INSTRUMENT PANEL INSTALLATION, MODIFICATION OF
  TB_407-06-74.pdf 25-Oct-06 BAGGAGE FLOOR PANEL, IMPROVED CORROSION RESISTANCE OF
  TB_407-05-73.pdf 28-Nov-05 SLEEVE ASSEMBLY 406-010-409-113, INTRODUCTION OF
  TB_407-05-72.pdf 18-Oct-05 BEARING SUPPORT 407-030-009-103, 407-030-010-101, 407-030-831-105 AND 407-030-832-101, PRIMER- APPLICATION OF
  TB_407-05-70.pdf 04-Aug-05 NEW FRAHM ASSEMBLY 407-010-150-111, INTRODUCTION OF
  TB_407-05-68.pdf 13-Jul-05 407-050-102-101 AFT CROSSTUBE ASSEMBLY, MODIFICATION OF
  TB 407-05-67.pdf 01-Jun-05 IMPROVED 407-340-302-103 ROTOR BRAKE CALIPER, INTRODUCTION OF
  TB 407-05-66.pdf 20-May-05 MAST POLE 407-040-038-111, MAST NUT LOCK 407-010-117-101 AND RETAINER 407-010-118-101, INTRODUCTION OF
  TB 407-05-65 Rev A.pdf 26-Apr-05 TRANSMISSION OIL PUMP SEAL, 38-79004-1045-2, INTRODUCTION OF
  TB_407-04-61_Rev_ A.pdf 22-Apr-05 IMPROVED SEAT RETAINING CLIPS, INTRODUCTION OF
  TB 407-00-23 Rev A.pdf 11-Apr-05 TRANSMISSION OIL PUMP SEAL 38-79004-1042-2, INTRODUCTION OF
  TB 407-05-64.pdf 01-Mar-05 BEARING 406-310-405-103 AND MAIN ROTOR PITCH LINK ASSEMBLY 406-010-413-137, INTRODUCTION OF
  TB 407-04-62.pdf 13-Dec-04 FREEWHEEL AFT SEAL LUBRICATION, IMPROVEMENT OF
  TB 407-04-59 Anti-fretting Washers, Installation of.pdf 17-May-04 MAIN ROTOR FLIGHT CONTROLS ANTI-FRETTING WASHERS 140-005-19-16-4 AND 140-055-1, INSTALLATION OF.
  TB 407-04-58.pdf 04-May-04 DRAIN HOLES, AIR INLET COWL ASSEMBLY FLOOR PANEL, -MODIFICATION OF
  TB 407-04-57.pdf 16-Mar-04 MAST ASSEMBLY 407-040-011-ALL, BUILT UP PROCEDURE CHANGE OF
  TB 407-04-56 .pdf 05-Mar-04 EXHAUST DUCT ASSEMBLY 407-063-001-103, INTRODUCTION OF.
  TB 407-04-54 Rev A .pdf 24-Feb-04 REVISION A TO TECHNICAL BULLETIN 407-04-54:FADEC CABLE ASSEMBLIES 407-375-012-101 AND 407-375-012-103 CLAMPING ARRANGEMENT, IMPROVEMENT OF.
  TB 407-03-43 Rev A.pdf 20-Feb-04 REVISION A TO TECHNICAL BULLETIN 407-03-43: (BEARING 407-340-339-107 AND GREASE MOBIL 28 PER MIL-PRF-81322, INTRODUCTION OF ).
  TB 407-04-55.pdf 17-Feb-04 NEW MAIN ROTOR BLADES 407-015-001-127, /-129, PRODUCT BALANCE ADJUSTMENT CAPABILITY - INTRODUCTION OF
  TB 407-03-53.pdf 19-Dec-03 AFT FIREWALL REINFORCEMENT
  TB 407-03-52 .pdf 17-Dec-03 NEW RADS-AT SCRIPT FILE, VERSION 7.30, INTRODUCTION OF.
  TB 407-03-51 .pdf 03-Dec-03 HUB FRAHM ASSY 407-010-150-ALL REMOVAL OF
  TB 407-03-50.pdf 25-Nov-03 FUEL TUBE ASSEMBLY P/N 407-062-045-101, INTRODUCTION OF.
  TB 407-03-49 .pdf 19-Nov-03 HYDRAULIC SERVO ACTUATORS 206-076-062-105 AND /-107, OVERHAUL INSPECTION - INTRODUCTION OF
  TB 407-03-48 .pdf 10-Nov-03 MAIN ROTOR CONE SET 407-010-114-101 SHIMMING PROCEDURE, INTRODUCTION OF.
  TB 407-03-47.pdf 10-Nov-03 TAIL ROTOR YOKE CLAMP RING 406-012-105-101, REPLACEMENT OF.
  TB 407-03-46.pdf 30-Oct-03 TUNING WEIGHTS 407-023-003-(ALL), REMOVAL OF
  TB 407-03-45.pdf 30-Oct-03 COLOR CREW SEAT BELT RESTRAINTS 222-320-823-129 / -130, INTRODUCTION OF
  TB 407-03-44.pdf 16-Oct-03 MAST POLE 407-040-038-101, -105 AND SWASHPLATE DRIVE HUB INSTALLATION CORROSION PROTECTION, ADDITION OF
  TB 407-03-42 Rev A.pdf 22-Sep-03 ROD END ASSEMBLY P/N 407-001-404-101, INTRODUCTION OF
  TB 407-02-38.pdf 19-Aug-03 TAIL ROTOR CONTROLS ANTI-CHAFING PACKING, ADDITION OF.
  TB 407-01-30 Rev A.pdf 27-May-03 REVISION "A" TO TECHNICAL BULLETIN 407-01-30: (HYDRAULIC PUMP INPUT SHAFT 407-340-107-101 AND ADAPTER 407-340-108-101, INTRODUCTION OF)
  TB 407-03-41.pdf 21-Mar-03 TRANSMISSION INPUT SEAL 407-340-003-101 AND MAIN ROTOR MAST SEAL 407-340-005-101, INTRODUCTION OF
  TB 407-03-40.pdf 20-Mar-03 SPARE TAILBOOM ASSEMBLY P/N 407-030-801-201, /-203, ADDITION OF MISSING SPACER P/N 407-023-800-137
  TB 407-02-39.pdf 01-Aug-02 NEW CYCLIC CONTROLS RIGGING PROCEDURE INTRODUCTION OF
  TB 407-02-36 .pdf 28-Mar-02 ROTOR BRAKE ASSEMBLY P/N 206-340-301-103; IMPROVED FRICTION PAD ASSEMBLIES AND GUIDE BOLTS, INSTALLATION OF, AND INSPECTION AND OVERHAUL INTERVAL, REDUCTION OF.
  TB 407-02-35 .pdf 28-Mar-02 OIL COOLER BLOWER SHAFT ASSEMBLY: IMPROVED BEARING HANGERS, BRACKETS AND LINKS, INTRODUCTION OF, BALANCE PLATES, INSTALLATION OF.
  TB 407-02-37.pdf 28-Mar-02 TRANSMISSION 407-040-006-ALL INPUT SEAL HOUSING, INSTALLATION PROCEDURE
  TB 407-01-34.pdf 19-Dec-01 PYLON SIDE BEAMS 407-010-201-105 AND 407-010-203-105, INSTRUCTION FOR RETURNING TO SERVICE.
  TB 407-98-12 rev A.pdf 15-Nov-01 REVISION "A" TO TECHNICAL BULLETIN 407-98-12: (BEARING 407-340-339-101/-103 AND GREASE ROYCO 13 PER MIL-G-25013, INTRODUCTION OF)
  TB 407-01-33.pdf 10-Sep-01 HORIZONTAL STABILIZER INSTALLATION 407-023-800-ALL, IMPROVEMENT OF
  TB 407-01-32.pdf 01-Aug-01 OIL COOLER BLOWER SHAFT; BRACKETS, HANGERS AND BEARINGS, INSTALLATION INSTRUCTION FOR
  TB 407-01-31.pdf 12-Jul-01 IMPROVED TAIL ROTOR GEARBOX INPUT SEAL P/N 427-342-412-101, INTRODUCTION OF
  TB 407-01-29.pdf 21-Feb-01 GROOVED FREEWHEELING CONE SET 407-040-548-101, INTRODUCTION OF.
  TB 407-00-21.pdf 14-Feb-01 TAIL ROTOR GEARBOX CASE ASSEMBLY P/N 406-040-406-101 MODIFICATION OF.
  TB 407-00-27.pdf 11-Sep-00 FORWARD FREEWHEEL SEAL 407-340-102-101, INTRODUCTION OF
  TB 407-00-24.pdf 08-Sep-00 ENGINE START CIRCUIT, ADDITION OF PULL UP RESISTOR TO IMPROVE FADEC START MODE LOGIC.
  TB 407-00-25.PDF 08-Sep-00 FUEL SYSTEM ANTI-ICING ADDITIVE DECAL P/N 31-056-18EFHP, REMOVAL OF.
  TB 407-00-26.PDF 01-Sep-00 EMERGENCY LIGHTWEIGHT FLOAT KIT INSPECTION & OVERHAUL SCHEDULE MODIFICATON OF.
  TB 407-00-22.PDF 01-Mar-00 IMPROVED MAIN ROTOR PITCH HORN FLOATING BUSHING P/N 407-010-116-101, INTRODUCTION OF
  TB 407-99-19 A.pdf 23-Sep-99 NEW ENGINE OIL SYSTEM FLEXIBLE HOSES
  TB 407-99-20.pdf 23-Sep-99 FREEWHEEL RETURN LINE REPLACEMENT AND RELOCATION
  TB 407-99-18.pdf 23-Sep-99 NEW DISC PACK COUPLING
  TB 407-99-16.pdf 23-Sep-99 IMPROVED LOWER CONE SEAT
  TB 407-99-15.pdf 23-Sep-99 FUEL SHUT-OFF VALVE CAVITY AND SHOULDER RESTRAINT INSTALLATION IMPROVEMENT
  TB 407-99-14.pdf 23-Sep-99 IMPROVED FRAHM DAMPER
  TB 407-98-13.pdf 23-Sep-99 PEDAL STOP AND RIGGING PROCEDURES FOR INCREASE VNE TO 125 KIAS
  TB 407-98-11.pdf 23-Sep-99 LITTER DOOR SEAL MODIFICATION
  TB 407-98-10.pdf 23-Sep-99 TAILROTOR DRIVE SPLINE LUBRICANT
  TB 407-98-09.pdf 23-Sep-99 ECU ELECTRICAL BONDING
  TB 407-98-08.pdf 23-Sep-99 NEW TAILROTOR BLADE
  TB 407-97-07.pdf 23-Sep-99 THROTTLE GRIP FRICTION, INSP / MOD
  TB 407-97-06.pdf 23-Sep-99 FADEC/ECU AND LITTON INSTRUMENT MOD
  TB 407-97-05.pdf 23-Sep-99 DIRECTIONAL SYSTEM BELLCRANK ASSY INSP. / REWORK
  TB 407-97-04.pdf 23-Sep-99 AFT ENGINE FIREWALL COVER REPLACEMENT
  TB 407-97-03 .pdf 23-Sep-99 IMPROVED CORNER MOUNT
  TB 407-96-02 .pdf 23-Sep-99 MODIFICATION FOR INCREASE IN VNE
  TB 407-99-17 .pdf 23-Sep-99 MODIFICATION OF TAIL ROTOR AND PEDAL STOP


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