TB 1--1520--237--20--243
and partially removing the pin out far enough for the top two expandable segments to be visible
above the blade cuff is not required unless there is indication of a fault. Lifting the blade and partial-
ly removing the pin out far enough for the top two expandable segments to be visible above the
blade cuff is required during the 30 hour inspection interval.
d. Supercede the PMS-1 inspection imposed in TB 1-1520-237-20-236, paragraphs 9.b. and 9.c. with
the PMS-1 inspections of paragraphs 12.e.(1) and 12.e.(2) within this TB.
e. Implement the technical manual changes IAW paragraph 12.e..
f. The red horizontal dash / / - / / will be cleared when the paragraph 8 inspection is complete. Report
IAW paragraph 14.a.(2)..
Correction Procedures.
a. If inspection criteria IAW paragraph 8.a. is not met:
(1) Make the following red dash / / - / / entry on the DA Form 2408-13-1 "Inspect Blade Expand-
able Pin Serial Number XXXXXXXX IAW TB 1-1520-237-20-243 at XXXX.X Aircraft Hours or XXXXX Date."
Visually inspect discrepant pin handles for cracks every 10 hours/14 days until the discrepant pins are re-
placed.
(2) Make the following red diagonal / / \ / / entry on the DA Form 2408-13-1 "Blade Expandable
Pin Serial Number XXXXXXXX Requires Replacement NLT 4 October, 2002 IAW TB 1-1520-237-20-243."
Replace the expandable pin as soon as practicable but NLT 4 October, 2002 unless replaced earlier for other
causes (i.e. corrosion, other damage, etc.). Contact LOG POC for instructions to obtain replacement pins
and disposition instructions.
b. If inspection criteria in paragraph 8.b. is not met, replace pin.
a. Parts Required - Items cited in paragraph 7. may be required to replace defective items.
b. Requisitioning Instructions -- Contact Logistical Point Of Contact in paragraph 16.b. for requisition-
ing instructions.
c.
Bulk and Consumable Materials. N/A.
d. Disposition - Hold any discrepant part/component pending disposition instructions from Logistical
Point Of Contact in paragraph 16.b.
e. Disposition Of Hazardous Material - IAW environmental protection agency directives as implement-
ed by your servicing environmental coordinator (AR 200-1).
11. Special Tools, and Fixtures Required.. N/A.
12. Application.
a. Category of Maintenance. AVUM. Aircraft downtime will be charged to AVUM maintenance. Report
aircraft non-mission capable maintenance (NMCM) while undergoing inspection and correction IAW this TB.
Report aircraft non-mission capable supply (NMCS) while waiting for parts IAW this TB.
b. Estimated Time Required.
(1) Time to Complete Inspection --
(a) Total of 4 man-hours using 4 persons.
(b) Total of1 hour downtime for one end item (aircraft).
(2) Time For Replacement Of Pin (s) In One Main Rotor Blade --
(a) Total of 4 man-hours using 4 persons.
(b) Total of 1 hour downtime.
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