Chapter 6
6-9.Sustainment maintenance personnel perform UAS component repair, part replacement, fault
detection, and fault isolation of specific parts. At this level of maintenance, maintainers focus on the
repair of component items and their return to the distribution system. Component repair includes items
such as major assemblies, LRUs, and repairable line items. Corps and theater maintenance activities,
special repair activities, or contractors on the battlefield can perform sustainment maintenance.
6-10. Sustainment maintenance actions typically involve repair of reparable Class IX components, off-
system, for return to the supply system. Uniformed maintenance personnel, DA civilians, or contractors
can perform sustainment maintenance. The decision to have sustainment maintenance includes detailed
off-system inside-the-box repair of LRUs through shop replaceable unit repair/replacement, and rebuild
of engines, transmissions, and the like.
SECTION II–UNMANNED AIRCRAFT SYSTEM ORGANIZATIONS
RQ-1L I-GNAT
6-11. CLS personnel operate and maintain the I-Gnat. The approved two-tier maintenance system (field
and sustainment) is the basis for I-Gnat logistics and maintenance.
6-12. Army units may assist I-Gnat maintenance personnel when possible by facilitating timely
maintenance through the issuing of common tools, common hardware (nuts, bolts, washers, and the like),
and general maintenance advice and assistance, recovery support, and any other command authorized
assistance that ensures or enhances system availability and mission accomplishment (AR 95-20).
RQ-5/MQ-5 HUNTER
6-13. Hunter UAS units have the same responsibilities as other units to request and obtain supplies and
logistics. The initial entry force carries 72 hours worth of Class I (food and water) and Class III
(petroleum, oils, and lubricants [POL}) and 120 hours of Class IX. The following is a breakdown of
unique requirements by class of supply:
z Class III. For Hunter units, this is a complicated class of supply. The current Hunter UA with
Moto-Guzzi engines use 100 low lead (100 LL) AVGAS only as per UAS-program manager
(PM) Field Notice 05-02 (RQ-5A) – Hunter Short Range Unmanned Aircraft System –
Mandatory – Use of 100 low lead AVGAS dated 8 June 2005. The organic brigade will provide
all Class III.
z Class IX. Contact repair teams deliver all system peculiar repair parts. When deployed away
from the battalion, the supported unit or forward support battalion (FSB) provides common
items.
6-14. The maintenance section is part of the launch and recovery platoon and consists of eight 33W
EW/I system repairers and six 52D power-generation equipment repairers. The maintenance section
performs system maintenance, launch and recovery operations, and additional duties associated with L/R
site emplacement, the preparation of the UA for launch and recovery, in addition to their MOS specific
tasks. One of the maintenance section’s 33W’s and 52D’s function as the commander’s quality assurance
(QA) inspectors, ensuring maintenance performed on unit’s UA and shelters is in accordance with
approved publications. The CLS team consists of five field service representatives that include one
mechanic, one technician, two VOs, and one QA inspector.
6-15. Life cycle CLS is the basis for the Hunter UAS maintenance concept. This maintenance approach
means that the Hunter UAS unit will continue to have a CLS team assigned. Army maintenance
personnel will provide routine field maintenance.
6-16. Army maintenance personnel perform field maintenance onsite. Field maintenance includes UA
assembly and disassembly, preflight and post-flight checkouts and inspections, minor structural repairs
and servicing, and troubleshooting and repair (primarily LRU removal and replacement). BIT procedures
support fault location and diagnostics to the LRU level and objective card level. Once the fault has been
4 April 2006 FMI 3-04.155 6-3