Textron Bell 206L3 User Manual

BHT-206L3-MM-1
NOTICE
The instructions set forth in this manual, as supplemented or modified by Alert Service Bulletins (ASB) or
other directions issued by Bell Helicopter Textron Inc. and Airworthiness Directives (AD) issued by the
applicable regulatory agencies, shall be strictly followed.
Maintenance Manual also applicable to 206L3+ helicopters (Increased Gross Weight kit 206-706-530
installed per BHT-206-SI-2052).
Export Classification C, ECCN EAR99
32672)),&(%2;)257:257+7(;$6
REISSUE — 27 AUGUST 1992
REVISION 24 — 25 JUNE 2019
COPYRIGHT NOTICE
COPYRIGHT
201
BELL
® HELICOPTER TEXTRON INC.
AND BELL HELICOPTER TEXTRON
CANADA LTD.
ALL RIGHTS RESERVED
MAINTENANCE MANUAL
VOLUME 1
GENERAL INFORMATION

Textron Bell 206L3 Specifications

General

Brand	Textron
Model	Bell 206L3
Category	Toy
Language	English

Summary

MAINTENANCE MANUAL VOLUME 1

GENERAL INFORMATION

Provides an overview of the manual and general instructions.

CHAPTER 4 — AIRWORTHINESS LIMITATIONS SCHEDULE

AIRWORTHINESS LIMITATIONS SCHEDULE

Specifies the mandatory limits for components.

4-1. AIRWORTHINESS LIMITATIONS SCHEDULE

Table 4-1. Airworthiness Limitations Schedule

CHAPTER 5 — INSPECTIONS AND COMPONENT OVERHAUL SCHEDULE

INSPECTIONS

Covers various types of inspections for the helicopter.

SCHEDULED INSPECTIONS

Details the planned inspection programs.

5-7. SCHEDULED INSPECTIONS

5-8. AIRFRAME INSPECTION PROGRAM

Details airframe inspection programs.

5-9. AIRFRAME PROGRESSIVE INSPECTION PROGRAMS

Explains progressive inspection programs.

5-10. 100-HOUR AIRFRAME PROGRESSIVE INSPECTION PROGRAM

Details the 100-hour inspection program.

5-11. 300-HOUR AIRFRAME PROGRESSIVE INSPECTION PROGRAM

5-12. AIRFRAME PERIODIC INSPECTION PROGRAM

5-13. 100-HOUR AIRFRAME PERIODIC INSPECTION PROGRAM

5-14. 300-HOUR AIRFRAME PERIODIC INSPECTION PROGRAM

Table 5-3. 300-Hour Airframe Progressive or 300-Hour Airframe Periodic Inspection Program Prerequisites

PROGRESSIVE INSPECTIONS 5-16. 100-HOUR AIRFRAME PROGRESSIVE INSPECTION — EVENT NO. 1

ZONE 1 — MAIN ROTOR SYSTEM

Details inspections for the main rotor system.

MAIN ROTOR SYSTEM

Specific tasks for inspecting the main rotor system.

ZONE 2 — TAIL ROTOR ASSEMBLY

TAIL ROTOR ASSEMBLY

Specific tasks for inspecting the tail rotor assembly.

ZONE 3 — FORWARD DECK

AIRFRAME (FORWARD DECK)

Specific tasks for the forward deck airframe.

PROGRESSIVE INSPECTIONS 5-17. 100-HOUR AIRFRAME PROGRESSIVE INSPECTION — EVENT NO. 2

ZONE 4 — POWER PLANT

Details inspections for the power plant.

AIRFRAME (POWER PLANT AREA)

Specific tasks for the power plant airframe.

PROGRESSIVE INSPECTIONS 5-18. 100-HOUR AIRFRAME PROGRESSIVE INSPECTION — EVENT NO. 3

ZONE 6 — TAILBOOM

TAILBOOM STRUCTURE

PROGRESSIVE INSPECTIONS 5-19. 100-HOUR AIRFRAME PROGRESSIVE INSPECTION — EVENT NO. 4

ZONE 7 — CABIN INTERIOR

PROGRESSIVE INSPECTIONS 5-20. 100-HOUR AIRFRAME PERIODIC INSPECTION

SCHEDULED INSPECTIONS 5-28. 100-HOUR INSPECTION

SCHEDULED INSPECTIONS 5-29. 300-HOUR INSPECTION

CABIN INTERIOR

SCHEDULED INSPECTIONS 5-30. 1000-HOUR INSPECTION

SCHEDULED INSPECTIONS 5-31. 1200-HOUR INSPECTION

CYCLIC CONTROL STICK

SCHEDULED INSPECTIONS 5-32. AS REQUIRED BY MANUFACTURER

ENGINE

SCHEDULED INSPECTIONS 5-33. WEEKLY INSPECTION

MAIN ROTOR HUB AND BLADES, AND TAIL ROTOR HUB AND BLADES

Details inspections for main and tail rotor components.

SCHEDULED INSPECTIONS 5-34. 12-MONTH INSPECTION

AIRFRAME

SCHEDULED INSPECTIONS 5-35. 12 MONTHS OF COMPONENT OPERATION

MAIN ROTOR MAST

SCHEDULED INSPECTIONS 5-36. 24-MONTH INSPECTION

MAIN ROTOR FLIGHT CONTROL BOLTS/NUTS

SCHEDULED INSPECTIONS 5-37. 60-MONTH INSPECTION

FREEWHEEL ASSEMBLY

SCHEDULED INSPECTIONS 5-38. 300-HOUR OR 12-MONTH INSPECTION

SCHEDULED INSPECTIONS 5-39. 600 HOURS OF COMPONENT OPERATION

SCHEDULED INSPECTIONS 5-40. 600 HOURS OR 12 MONTHS OF COMPONENT OPERATION

MAIN DRIVESHAFT

SCHEDULED INSPECTIONS 5-41. 1200 HOURS OF COMPONENT OPERATION

FREEWHEEL ASSEMBLY (WITH CLUTCH CL41742-1)

MAIN ROTOR HUB ASSEMBLY

SCHEDULED INSPECTIONS 5-42. 1500 HOURS OF COMPONENT OPERATION

FREEWHEEL ASSEMBLY (WITH CLUTCH CL42250-1)

SCHEDULED INSPECTIONS 5-43. 1500 HOURS OF COMPONENT OPERATION AND EVERY 50 HOURS THEREAFTER

SWASHPLATE SUPPORT 206-010-452-001/-005/-109

SCHEDULED INSPECTIONS 5-44. 2250 HOURS OR 60 MONTHS OF COMPONENT OPERATION

SCHEDULED INSPECTIONS 5-45. 3000 HOURS OF COMPONENT OPERATION

TAIL ROTOR GEARBOX

SPECIAL INSPECTIONS 5-46. SPECIAL INSPECTIONS

SPECIAL INSPECTIONS 5-47. AFTER FUEL SYSTEM MAINTENANCE AND/OR COMPONENT CHANGE

FUEL SYSTEM

SPECIAL INSPECTIONS 5-48. 1 TO 5 HOURS AFTER EACH INSTALLATION

SPECIAL INSPECTIONS 5-49. 3 TO 8 HOURS AFTER EACH INSTALLATION

MAIN ROTOR

SPECIAL INSPECTIONS 5-50. 10 TO 25 HOURS AFTER EACH INSTALLATION

SWASHPLATE ASSEMBLY

DISC PACK COUPLING

SPECIAL INSPECTIONS 5-51. 100 HOURS AFTER EACH INSTALLATION

TAILBOOM

TRANSMISSION

CONDITIONAL INSPECTIONS 5-52. CONDITIONAL INSPECTIONS

CONDITIONAL INSPECTIONS 5-53. HARD LANDING

HARD LANDING

CONDITIONAL INSPECTIONS 5-54. SUDDEN STOPPAGE/ACCELERATION

SUDDEN STOPPAGE/ACCELERATION — MAIN ROTOR

CONDITIONAL INSPECTIONS 5-55. OVERSPEED MAIN ROTOR — 114% OR GREATER

OVERSPEED MAIN ROTOR — 114% OR GREATER

CONDITIONAL INSPECTIONS 5-56. OVERTORQUE

OVERTORQUE — 110 TO 120%

CONDITIONAL INSPECTIONS 5-57. ENGINE COMPRESSOR STALL OR SURGE

PART I: INVESTIGATE CAUSE OF COMPRESSOR STALL OR SURGE

POWER PLANT

PART III: INSPECTION FOR COMPRESSOR STALL OR SURGE WITH NOTICEABLE YAW

ENGINE-TO-TRANSMISSION DRIVESHAFT (APPLICABLE TO 206L3)

Details driveshaft inspection.

ENGINE-TO-TRANSMISSION KAFLEX DRIVESHAFT (APPLICABLE TO 206L3+ IGW UPGRADE)

Details KAflex driveshaft inspection.

CONDITIONAL INSPECTIONS 5-58. LIGHTNING STRIKE

LIGHTNING STRIKE

CONDITIONAL INSPECTIONS 5-59. ENGINE OVERTEMP

ENGINE OVERTEMP

COMPONENT OVERHAUL SCHEDULE 5-60. COMPONENT OVERHAUL SCHEDULE

Table 5-4. Component Overhaul Schedule

Lists component overhaul intervals.

Table 5-4. Component Overhaul Schedule (Cont)