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 TB 1-1520-240-20-131
(5) Refer to paragraph 10d for disposition instructions for non--compliant parts.
NOTE
Completion of eddy current inspections depend on the availability of
probes. The probes are being sent to NDI personnel who actually sup-
port CH--47 aircraft only. Contact your NDI support technician. The 50
hour visual inspections will continue until probes are available.
b. If no cracks are found, perform the inspection procedure described in paragraph 8 every 50 flight
hours. An EDDY current inspection is required prior to installation and at next phased inspection interval and
every phased inspection interval thereafter. Once the aircraft reaches a phased inspection interval and the
EDDY current inspection is performed, the 50 hour visual inspection is no longer required.
a.
Parts Required. Items cited in paragraphs 6 and 7 may be required to replace defective items.
b. Requisitioning Instructions. Requisition replacement parts using normal supply procedures. All req-
uisitions shall use project code (CC 57-59) "X0D" (XRAY-ZERO-DELTA).
NOTE
Project code "X0D" is required to track and establish a data base of
stock fund expenditures incurred by the field as a result of SOF actions.
c.
Bulk and Consumable Materials. Acetone, technical, P/N 00--A--51, NSN 6810-00-184-4796.
d. Disposition. Dispose of removed parts/components using normal supply procedures. All turn--in
documents must include project code (CC 57--59) "X0D" (X-RAY-ZERO-DELTA). Non--compliant hubs will
be scrapped at Depot level only.
e.
Disposition of Hazardous Material. N/A.
11. Special Tools and Fixtures Required. As required.
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 in accor-
dance with this message.
b.
Estimated Time Required-
(1) For initial and recurring 50 hour visual inspection --
(a) Total of 2 man--hours using 1 person.
(b) Total of 2 hours downtime for one end item.
(2) For EDDY current inspection --
(a) Total of 2 man--hours using 1 person.
(b) Total of 2 hours downtime for one end item.
(3) For rotor head replacement --
(a) Total of 80 man--hours using 8 persons.
(b) Total of 10 hours downtime for one end time.
c.
Estimated Cost Impact to the Field.
NOMENCLATURE
PART NUMBER
NATIONAL STOCK
COST EACH
NUMBER
Head, Rotary Wing,
145R2003-10
$167,729
FWD
Head, Rotary Wing,
145R2004-20
$167,729
AFT
4
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