TB 1-1520-238-20-119
c. Following the procedures required IAW para 8a(1) and 9a(1), if the ball is pitted and/or seized to
the valve, replace the valve IAW TM 1--1520--238--23, para 12.42 for the AH--64A and the IETM for the
AH--64D.
10. Supply/Parts and Disposition.
a. Parts Required -- Items cited in para 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) "X0T" (X--ray Zero Tango).
NOTE
Project code "X0T" 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 --
Nomenclature
Part Number
NSN
Turco corrosion resistant fluid
WO--1
6850--00--551--9577
Corrosion prevention compound
fluid film
8030--01--387--1131
d. Disposition -- Demilitarize/Mutilate IAW TM 1--1500--328--23 any part/component which does not
meet inspection criteria.
e. Disposition of Hazardous Material -- IAW Environmental Protection Agency directives as
implemented 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.
b. Estimated Time Required --
(1) To inspect the check valves and vertical outlet ports -- total of 1.5 man--hours using 1
person.
(2) To clean and install the check valves -- total of 1.5 man--hours using 1 person.
(3) To clean the vertical outlet ports -- total of 0.5 man--hour using 1 person.
(4) Total of 3.5 hours downtime for one end item.
c. Estimated Cost Impact to the Field -- Parts common to all AH--64 series aircraft:
Nomenclature
Part No/NSN
QTY
Cost Ea.
Valve, Stop--Check
7--117210003/
3
5.40
4820--01--170--1280
Total approximate cost per aircraft = 6.20
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 -- A copy of this TB shall be
inserted in the appropriate publication, or filed with appropriate IETM, as authority to implement the
change until the printed change or updated ITEM is received.
(1) Interactive Electronic Technical Manual (IETM): TM 1--1520--Longbow/Apache IETM, CD
No. 1, version 3.1.2, data 19 Nov 98, CD date 1 Dec 98 or subsequent.
(2) TM 1--1520--238--PM -- Phased Maintenace Inspection Checklist for Army AH--64A
Helicopter, 30 Jun 94.
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