SB 11-443
tract. THE COMPONENTS WILL CONTAIN AP-
and Marking Materiels, Supplies and Equipment
PROPRIATE SEALS WHICH WILL NOT BE
Used by the Army.
-
BROKEN OR TAMPERED WITH IN ORDER TO
j. DOD 4160.21-M--Defense Disposal Manual.
COMPLY WITH INTERIM CONTRACTOR SUP-
PORT DEPOT LEVEL CONDITIONS OF THE
ASN-128 is a lightweight, low-cost, reliable airborne
CONTRACT. Note that all components returned for
navigation system for the US Army's rotary wing
repair to the contractor will undergo a joint inspec-
aircraft. The LDNS, acting with external inputs from
tion at the contractor's plant by both a government
a magnetic-heading reference and attitude-
and contractor representative.
stabilization data system, computes position data for
b. Interim Contractor Support (ICS) contract
navigation in latitude and longitude, and Universal
terms contain monetary penalty conditions involving
Transverse Mercator (UTM) coordinator, It com-
the return of LDNS components found to be operat-
putes present position, bearing, time and distance to
ing satisfactorily by the contractor and Government
destination.
Product Assurance personnel upon inspection at the
b. The components of AN/ASN-128 are as follows:
plant. Maintenance activities will therefore follow the
applicable procedures involving the tests prescribed
NSW
Nomenclature
in TM 11-5841-281-12 at the respective support cate-
Receiver-Transmitter Antenna, Radar
gories to assure that a component is not functioning
RT-1193/ASN-128
Computer
Display
Unit
as required before returning the component for
CP-1252-ASN-128
replacement/repair. Using units will ensure that, be-
5841-01-0641841
C o n v e r t e r , Signal Data Radar
fore return of components for Interim Contractor
CV-3338/ASN-128
Support, all prescribed tests are performed to verify
c. The AN/ASN-128 and all of its components are
that an unserviceable component exists.
being procured by CECOM from the manufacturer,
c. The Interim Contractor Maintenance philosophy
Singer Company, Kearfott Division. The AN/
uses a direct interface between the user's mainte-
ASN-128 was procured with a four year Reliability
nance organization i.e., usually the direct support
Improvement Warranty (RIW) which will terminate
unit or aviation intermediate maintenance (AVIM)
on 31 Aug 84. The RIW program provided for all
and the component manufacturer's repair facility.
maintenance at the depot level to be performed by
This means that the user's maintenance organization
the contractor, Effective 1 Sep 84, this ICS program
receives, processes and returns the failed component
will provide Intermin Contractor Support at the de-
to the manufacturer. Shipment of the replacement/
pot level for the AN/ASN-128 system and compo-
repaired component will be made to the evacuating
nents for a period of one year, with options for two
maintenance activity. Multiple handling of service-
one year periods. The Interim Contractor Support
able/unserviceable components between intermediate
will remain in effect until the Army establishes depot
organizations will be avoided to eliminate long han-
support capability.
dling and processing times.
d. DURING THE LIFE OF THIS ICS, THERE
d. Interim Contractor Support (ICS) depot level
WILL NOT BE ANY REPAIR (OTHER THAN
effectiveness is based upon quick processing of failed
THOSE MINOR EXTERNAL REPLACEMENTS
components to and from the contractor's repair
AS SPECIFIED IN TM 11-5841-281-12, CHAP-
facilities.
TER 5) OF ANY AN/ASN-128 COMPONENTS BY
ARMY MAINTENANCE ACTIVITIES, (DIRECT
5. Procedures. a. Interim Contractor Support (ICS)
SUPPORT, GENERAL SUPPORT, DEPOT), OR
depot level. Components authorized for repair under
BY ANY FACILITIES OTHER THAN THOSE OF
contract DAAB07-84-C-F060 are identified as
THE MANUFACTURER.
follows:
e. Navigation Set, Doppler AN/ASN-128 will be
procured by AVSCOM and be installed during pro-
NSN
NOMENCLATURE
duction or retrofit of the following aircraft.
Receiver-Transmitter Antenna, Radar
RT-1193/ASN-128
AH-1 Q/S (MOD)/S Cobra
Computer Display Unit CP-1252/
CH-47D Chinook (Modernization)
ASN-128
AH-64 APACHE
5841-01-064-1841
Converter Signal Data Radar CV-3338/
UH-60A Blackhawk
ASN-128
4. Concept. a. Components furnished under this ICS
b. Materiel Flow.
will be free from defects in materiel, quality of work,
(1) An Interim Contractor Support (ICS) flow di-
agram for the components of the lightweight Doppler
and design and will operate in their intended environ-
Navigation Set AN/ASN-128 is shown in figure 1.
ment in accordance with the specification of the con-
2
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