Textron Bell 212, Maintenance Manual

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BHT-212-MM-1
5-00-00
Page 166
Rev. 14 26 JUN 2013 Export Classification C, ECCN EAR99
1. Inspect flight control tube assemblies P/N
212-076-151-001/-003/-005/-007/-009/-011 as follows:
a. Measure and record overall length of control tube, and
then remove adjustable clevis.
BHT-212-CR&O b. Inspect control rube for internal corrosion using a
borescope or equivalent. (Paint removal is not necessary.)
Particular attention shall be given to threaded areas. Any paint
anomalies such as blistering or discoloration will require paint
removal and further inspection. Any sighted internal corrosion is
cause for control tube rejection. If serviceable, refinish internal
surface of control tube with two coats of lacquer (C-226) using
fill and drain method.
c. Visually inspect external surfaces of control tubes for
mechanical damage and/or corrosion. Refer to the
BHT-212-CR&O manual for limits.
d. If serviceable, coat the control tube threaded area with
corrosion preventive compound (C-101), reinstall clevis into
control tube and adjust to recorded length.
2. Inspect P/N 204-001-957-001, 205-001-017-001 and -007,
212-001-051-001, 212-001-060-001 control tubes as follows:
a. Using a suitable container filled with 135 to 155°F (57 to
68°C) water, fully immerse the control tube for 2 minutes.
b. Any air bubbles detected from the control tube as a
result of the water immersion is cause for rejection of the tube.
c. Provided no air bubbles are detected, the control tube
may be considered serviceable.
3. Install flight control tubes and check rigging.
SPECIAL INSPECTIONS
5-42. FIRST 1000 HOURS OF COMPONENT TIME AND EACH 3000 HOURS THEREAFTER OF
COMPONENT TIME (CONT)
DATA REFERENCE INSPECTION TASK DESCRIPTION
INITIAL
MECH OTHER