TB 1--1520--240--20--113
NOMENCLATURE
PART NUMBER
NATIONAL STOCK NUMBER
GEAR/BEARING ASSY
145DS010-3
N/A
GEAR/BEARING ASSY
145DS011-6
GEAR/BEARING ASSY
145DS011-8
3110-01-232-7708
GEAR/BEARING ASSY
145DS011-9
3110-01-350-3674
8.
Inspection Procedures.
a. Forward and Aft Transmission: N/A
NOTE
Currently there are no transmissions issued that have the "MG" suffix to
the serial number. All existing transmissions will require depot level in-
spection and reidentification in accordance with this SOF.
b. All gear/bearing assemblies identified in paragraph 7 shall be reinspected at depot level using ap-
proved magnetic particle inspection (MPI) procedures in accordance with paragraph 9.
9.
Correction Procedures.
a. Transmissions identified with a "MG" serial number suffix are considered serviceable. If two service-
able transmissions are installed on same aircraft, the red "X" status symbol required by reference 13 may
be cleared.
b. Transmissions not identifiable with a "MG" serial number suffix are considered unserviceable at this
time and shall remain on aircraft pending follow--up instructions.
c. All gear/bearing assemblies identified in paragraph 7 shall be reinspected at a depot repair facility
using approved Magnetic Particle Inspection (MPI) procedures. Gear/bearing assemblies which are rejected
at overhaul for any reason, shall be tagged/labeled with DD Form 1577 / DD Form 1577--1 and retained for
future investigation.
10. Supply/Parts and Disposition .
a. Parts Required. N/A.
b. Requisitioning Instructions. Transmissions will be requistioned/distributed as they become avail-
able in accordance with Army priorities. Requisitioning guidance will be provided in future correspondence.
c.
Bulk and Consumable Materials. N/A.
d. Disposition. N/A.
e. Disposition of Hazardous Material. N/A.
11. Special Tools and Fixtures Required. N/A.
12. Application .
a. Category of Maintenance. Continue
reporting aircraft
downtime
in
accordance with
CH--47--SOF--99--02 (Depot Maintenance).
b. Estimated Time Required for Inspection. N/A.
c.
Estimated Cost Impact to the Field. N/A.
d. TB/MWOs to be Applied Prior to or Concurrently with this Inspection. N/A.
e. Publications Which Require Change as a result of this Inspection.
(1) TM 55--1520--240--23 Series
(2) TM 1--1520--252--23 Series
3