412 Information Letters


File Name
Date Posted
Description
  IL_412-17-81.pdf 13-Jan-17 AIR COMM CORPORATION SERVICE LETTER SL-374 REV C AND SERVICE BULLETIN SB 412-112316
  IL_412-16-80.pdf 08-Dec-16 412 AIRWORTHINESS LIMITATIONS SCHEDULE CHANGES
  IL_412-15-79.pdf 25-Jan-16 UPPER MAST SPLINE INSPECTION, INTRODUCTION OF
  IL_412-15-78.pdf 25-Feb-15 ROTORCRAFT FLIGHT MANUAL LIMITATION PER FAA AIRWORTHINESS DIRECTIVE AD 2015-04-04.
  IL_412-15-77.pdf 07-Jan-15 SPECIAL WARRANTY AND REPAIR INFORMATION FOR SPINDLE AND DAMPER ASSEMBLY 412-010-190-103 / -105.
  IL_412-14-76.pdf 30-Jun-14 SPINDLE AND DAMPER ASSEMBLY 412-010-190-103 / -105, IMPROVEMENT.
  IL_412-14-75.pdf 21-Jan-14 INTRODUCTION OF NEW TAIL ROTOR BLADE P/N 412-016-100-111.
  IL_412-13-74.pdf 10-Dec-13 INTRODUCTION OF A NEW MAST BEARING SINGLE LIP SEAL.
  IL_412-13-73.pdf 07-Jan-13 REMOVAL OF ZINC CHROMATE PRIMER STRIPES AS AN OVERHEAT CONDITION INDICATION.
  IL_412-12-72.pdf 10-Sep-12 ENGINE NII (NF) GOVERNOR POSSIBLE ANOMALY
  IL_412-12-71.pdf 19-Jun-12 IMPROVED ENGINE TORQUE PRESSURE TRANSDUCER P/N 412-375-006-103, INTRODUCTION
  IL_412-12-70.pdf 16-May-12 COMPONENT RETIREMENT LIVES, INCREASE OR ELIMINATION OF
  IL_412-11-INDEX.pdf 01-Mar-12 INFORMATION LETTER INDEX
  IL_412-11-69.pdf 26-Apr-11 FUEL FILTER LIGHT FLICKERING
  IL_412-11-68.pdf 25-Jan-11 LCR-100 ATTITUDE AND HEADING REFERENCE SYSTEM (AHRS)
  IL_412-04-55_Rev_B.pdf 14-Sep-10 BLR FASTFIN AND STRAKE INSTALLATION ON ALL BELL 412EP AND 412CF HELICOPTERS.
  IL_412-10-67.pdf 15-Apr-10 HIGH COLLECTIVE FORCES WITH ONE HYDRAULIC SYSTEM TURNED OFF
  IL412-10-66_Rev_A.pdf 09-Apr-10 DERIVED EMPTY WEIGHT CLARIFICATIONS.
  IL_412-09-65.pdf 11-Aug-09 BELL HELICOPTER VIBRATION MONITOR SYSTEM
  IL_412-09-64.pdf 05-Feb-09 JAR OPS 3 COMLIANCE
  IL_412-08-63.pdf 09-Jun-08 RELEASE OF HONEYWELL SERVICE BULLETIN 7015480-22-0011 APPLICABLE TO FZ-706 DIGITAL FLIGHT CONTROL COMPUTER
  IL_412-07-62.pdf 16-May-07 BELL HELICOPTER VIBRATION MONITOR SYSTEM SOFTWARE UPGRADE PC-GBS 4.0 SERVICE PACK 2
  IL_412-06-61.pdf 22-Dec-06 TAIL ROTOR DRIVESHAFT BOLTS P/N 20-065-05008
  IL_412-05-56_Rev_A.pdf 13-Dec-06 CHANGE TO RECOMMENDED INTERVALS FOR PLANNED MAINTENANCE OF BREEZE-EASTERN RESCUE HOISTS AND CARGO WINCHES
  IL_412-06-60.pdf 19-Jan-06 ENGINE FUEL FILTER DRAINING
  IL 412-05-59.pdf 25-Feb-05 MAIN ROTOR BLADE P/N 412-015-200-ALL & 412-015-300-ALL: NOTIFICATION OF LOSS OF TIP CAP ASSEMBLY P/N 412-015-035-105
  IL 412-05-58.pdf 14-Feb-05 COLD WEATHER USE OF KEROSENE FUELS FOR 212 AND 412 HELICOPTERS
  IL 412-05-57.pdf 07-Feb-05 CREW SEATS P/N 412-070-810-ALL: NOTIFICATION OF POSSIBLE DAMAGE TO SEAT ATTENUATOR GUIDE PIN P/N 222-620-821-101
  IL 412-04-54 Rev A.pdf 06-Dec-04 CYCLIC AND COLLECTIVE RIGGING, LOOK-A-LIKE TOOL
  IL 412-04-53.pdf 03-Nov-04 MAIN DRIVESHAFT BALANCE CRITERIA
  IL 412-00-40.pdf 08-Jun-04 DRAIN MAPS
  IL 412-03-52.pdf 23-Dec-03 P/N 214-070-300-001/-101 INTERNAL RESCUE HOIST CABLE CUTTER AND PYROTECHNIC CARTRIDGE
  IL 412-03-51 .pdf 15-Oct-03 NTER TURBINE TEMPERATURE INDICATORS
  IL 412-03-50.pdf 01-Jul-03 WINDSHIELD WIPER PARTS IDENTIFICATION
  IL 412-03-49.pdf 05-Jun-03 ROD END BEARING P/N 412-010-182-101, 412-010-448-101 AND 412-310-400-101/-103 AIRWORTHINESS LIMITATIONS SCHEDULE, CLARIFICATION OF.
  IL 412-02-48.pdf 10-Dec-02 IMPROVED WIPER MOTORS P/N 204-070-907-103/104
  IL 412-02-47.pdf 13-Nov-02 SPINDLE AND DAMPER BEARING ASSEMBLY P/N 412-010-190-103: NOTIFICATION OF CRACK
  IL 412-02-46.pdf 24-Apr-02 LCR-92 ATTITUDE AND HEADING REFERENCE SYSTEM (AHRS).
  IL 412-01-41 Rev A.pdf 30-Jan-02 CAP ASSEMBLY 412-330-437-101
  IL 412-01-45.pdf 03-Aug-01 ENGINE MANUAL FUEL CONTROL OPERATION
  IL 412-01-44.pdf 20-Jun-01 ALL OWNERS/OPERATORS OF BELL 204B, 205, 205B, 212, 412, 412EP, 412CF, AND UH-1H-II HELICOPTERS
  IL 412-01-43.pdf 20-Apr-01 TORQUE ON FLIGHT CONTROL BOLTS
  IL 412-01-42.pdf 19-Apr-01 ENGINE ACCESSORY GEARBOX OIL DRAIN VALVE P/N 209-062-010-001, INSTALLATION OF
  IL 412-99-36.pdf 23-Sep-99 COMBINING GEARBOX OIL TEMP SWITCH


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