Textron Bell 412 - 5-15 A. BETWEEN 1 AND 25 FLIGHT HOURS AFTER EXPANDABLE BLADE BOLT INSTALLATION

BHT-412-MM-2
5-00-00
Export Classification C, ECCN EAR99
SPECIAL INSPECTIONS
5-15A. BETWEEN 1 AND 25 FLIGHT HOURS AFTER EXPANDABLE BLADE BOLT INSTALLATION
DATA REFERENCE INSPECTION TASK DESCRIPTION
INITIAL
MECH OTHER
DATE: __________________W.O. _____________________
FACILITY: __________________________________________
HELICOPTER S/N: ___________________________________
REGISTRY NO.: _____________________________________
TOTAL TIME:_______________________________________
SIGNATURE:________________________________________
NOTE
Verify expandable blade bolt handle (1, Figure 5-4A)
force at initial installation and again in 1 to 25 flight
hours after installation.
Chapter 62 EXPANDABLE BLADE BOLT (412-010-137-103)
1. Remove safety lock pin from lower end of expandable
blade bolt (1).
2. Raise bolt handle (2) to reduce the diameter of the bolt ring
segments.
3. Push down on bolt handle (2). Verify that force required to
push handle down is between 50 and 75 pounds (222 to 334 N).
Refer to Chapter 62 for expandable blade bolt handle tension
adjustment.
4. If adjustment is required, do an additional handle force
check in 1 to 25 flight hours. In two consecutive inspections if
the handle force of an individual bolt is more than the permitted
limits 50 and 75 pounds (222 to 334 N) notify Product Support
Engineering.
01 JUN 2018 Rev. 26 Page 114A/114B