Textron Bell 412 - 5-21. EACH 100 HOURS OF COLLECTIVE LEVER OPERATION; COLLECTIVE LEVER 412-010-408-101;-105

BHT-412-MM-2
5-00-00
01 JUN 2018 Rev. 26 Page 127
Export Classification C, ECCN EAR99
SPECIAL INSPECTIONS
5-21. EACH 100 HOURS OF COLLECTIVE LEVER OPERATION
DATA REFERENCE INSPECTION TASK DESCRIPTION
INITIAL
MECH OTHER
DATE: __________________W.O. _____________________
FACILITY: __________________________________________
HELICOPTER S/N: ___________________________________
REGISTRY NO.: _____________________________________
TOTAL TIME:_______________________________________
SIGNATURE:________________________________________
ASB 412-11-148
NOTE
Accomplish each 100 hours of collective lever
412-010-408-101 and -105 operation.
COLLECTIVE LEVER 412-010-408-101/-105
1. Prepare helicopter for maintenance.
a. Gain access to the collective lever.
2. Use cleaning compound (C-318) or equivalent to
thoroughly clean the collective lever in preparation for
inspection.
3. Use a strong light source and a 10X magnifying glass to
inspect the collective lever in the area shown in Figure 5-4. Due
to difficult access, it is acceptable to inspect the lower side of
the affected area with a strong light source and a mirror only.
4. Look for evidence of cracks in the paint.
5. If a crack is suspected, remove the collective lever from the
swashplate assembly (Chapter 62).
a. Perform a fluorescent penetrant inspection with local
paint and primer removed in the suspected area
(BHT-ALL-SPM, Chapter 6)