Textron Bell 412, Maintenance Manual

Page: 157 / 288

BHT-412-MM-2
5-00-00
Export Classification C, ECCN EAR99
SPECIAL INSPECTIONS
5-16. BETWEEN 5 AND 10 HOURS OF FLIGHT AFTER EACH INSTALLATION
DATA REFERENCE INSPECTION TASK DESCRIPTION
INITIAL
MECH OTHER
DATE: __________________W.O. _____________________
FACILITY: _________________ _________________________
HELICOPTER S/N: __________ _________________________
REGISTRY NO.: ____________ _________________________
TOTAL TIME:_______________________________________
SIGNATURE: _______________ _________________________
NOTE
Accomplish between 5 and 10 hours of flight after
each installation.
Chapter 64 TAIL ROTOR HUB AND BLADE ASSEMBLY
1. Torque check tail rotor hub retaining nut to
900 inch-pounds (101.68 Nm).
2. Torque check tail rotor blade retaining nuts to 500 to
550 inch-pounds (57 to 62 Nm).
Chapter 65 TAIL ROTOR GEARBOX
Torque check tail rotor gearbox retaining nuts to 200 to
235 inch-pounds (22.60 to 26.55 Nm). Using a 0.005 inches
(0.127 mm) or less feeler gauge, verify no gap exists between
gearbox input quill shim and gearbox case shim.
Chapter 65 INTERMEDIATE GEARBOX
Torque check intermediate gearbox retaining bolts to 50 to
70 inch-pounds (5.65 to 7.90 Nm).
26 FEB 2013 Rev. 16 Page 115/116