b. If APEX main rotor blade expandable pin, MFG CAGE Code 2V343 is installed enter a red //X// sta-
tus symbol with the following statement: "Main rotor blade expandable pins (specify blade as required) re-
quire replacement IAW TB 1-1520-237-20-233." Then proceed to paragraph 8.d.. No ground run-ups are
allowed with APEX or defective pins.
c. If other than APEX main rotor blade expandable pin, MFG CAGE Code 2V343 is installed, proceed
(1) Preparation of part. The area of inspection shall be thoroughly cleaned. Clean the flat sides
of the cam area of the handle with a soft cotton rag dampened with P-D 680, Type 2, or equivalent.
(2) Inspect the pivot pin area of the cam handle using a 10X magnifier. This inspection will be
completed by a technical inspector. Inspect the cam handle surface area within one half inch of the pivot pin
(both sides of handle) for cracks or corrosion. No cracks or corrosion allowed in this area. If required, clean
the flat sides of the cam area of the handle with a dry soft cotton rag. If any indication of crack or corrosion
d. Complete report IAW paragraph 14.a(2) NLT 15 June 2001. This report must be provided to the
distribution of replacement pins as the become available.
e. Once procedures above are complied with, the inspection is complete and the red dash // - // entry
may be cleared..
9. Correction Procedures. Remove and replace all APEX main rotor blade expandable pins, or other
pins failing the 10X inspection IAW appropriate TM.
Do not hit blade pins with a hammer or other object to remove pin.
10. Supply/Parts and Disposition .
HQDA will prioritize units and repair parts.
a. Parts required. Items cited in paragraph 7 may be required to replace defective items:
b. Requisitioning instructions. Requisition replacement parts using normal supply procedures. All
requisitions shall use project code (CC 57-59) "X1D" (X-ray-One-Delta).
Project code "X1D" is required to track and establish a data base of stock fund expenditures in-
curred by the field as a result of message actions.
Bulk and Consumable Materials:
Dry Cleaning Solvent
P-D 680 / Any
Corrosion Prev. Compound
(Grade 2 or 4, any Type)
(1) For any pin found with a crack in the cam area of the handle, immediately contact the technical
POC listed in paragraph 16.a. and submit a category 1 QDR. Hold blade pin pending disposition instructions
from the technical POC.
(2) Hold any discrepant pin that does not meet the corrosion inspection criteria contained in this
message. The wholesale point of contact in paragraph 16.c. will provide disposition instructions. Notify the