TB 1-1520-237-20-178
and the retirement life for Aerex manufactured (CAGE 5K840) components will increase to the previously published
value of 12000 hours.
b. For manpower/downtime and funding impacts, see paragraph 12.
c. The purpose of this TB is to annotate the appropriate component records of Aerex manufactured retention plates
to reflect the full life as reflected in TM 1-1520-237-23-1.
5.
End Items to be Inspected. All H-60 aircraft with Aerex manufactured inboard retention plates installed.
6.
Assembly Components Affected.
NOMENCLATURE
PART NUMBER
NATIONAL STOCK NUMBER
T/R Gearbox
70358-06600-041
T/R Gearbox
70358-06600-042
T/R Gearbox
70358-06600-043
T/R Gearbox
70358-06600-044
TIR Gearbox
70358-06600-046
7.
Part Affected.
NOMENCLATURE
PART NUMBER
NATIONAL STOCK NUMBER
T/R Retention Plate
70358-06612-042
8.
Inspection Procedures. Verify through aircraft records if tail rotor retention plate, 70358-06612-042, serial
number C1324-001 through C1324-150 is installed in aircraft. If the serial number of the retention plate does match one
of the serial numbers listed, perform actions in paragraph 9. If serial number does not match the above identified serial
numbers, the inspection is complete.
9.
Correction Procedures If a tail rotor retention plate is identified per paragraph 8. above, annotate the appropriate
component records to reflect the new retirement life of 12000 hours.
10.
Supply/Parts and Disposition. N/A.
11.
Special Tools, Jigs and Fixtures Required. N/A.
12.
Application.
a. Category of Maintenance. AVUM.
b. Estimated Time Required.
(1) Total of 0.25 man-hours using 1 persons.
(2) Total of 0.25 hours downtime for one end item.
c. TB/MWOs to be Applied Prior to or Concurrently with this Inspection. N/A.
d. Publications Which Require Change as a Result of This Inspection. TM 1-1520-237-23-1 shall be changed to
reflect the previous retirement of 12000 hours for Aerex manufactured inboard retention plates.
13.
References. TM 1-1520-237-23.
14.
Recording and Reporting Requirements.
a. Reporting Compliance Suspense Date (Aircraft). N/A.
b. Task/lnspection Reporting Suspense Date (Aircraft). N/A.
c. Reporting Compliance Suspense Date (Spares). N/A.
2
