Aviation Maintenance Levels Flashcards

Under the Army's two-level maintenance system, which two levels make up aviation maintenance?

Answer: Field and sustainment

Army aviation maintenance is split into field maintenance (formerly AVUM and AVIM) and sustainment maintenance (formerly depot).

Which former maintenance categories are combined to form aviation field maintenance?

Answer: AVUM and AVIM

Field maintenance merges the former aviation unit (AVUM) and aviation intermediate (AVIM) maintenance tasks.

What is the main goal of field maintenance?

Answer: Repair and return equipment to the user

Field maintenance is focused on the user and repairs equipment so it can go back to the operating unit.

What is the main goal of sustainment maintenance?

Answer: Repair and return items to the supply system

Sustainment maintenance is focused on the supply system and returns repaired components to Army inventory.

In an aviation battalion, which company mainly does AVUM-type field maintenance?

Answer: Aviation Maintenance Company (AMC)

The AMC in each aviation battalion does unit-level field maintenance such as phase inspections and scheduled maintenance.

Which unit in the Aviation Support Battalion gives AVIM-type field maintenance support to a Combat Aviation Brigade?

Answer: Aviation Support Company (ASC)

The ASC in the ASB does higher-level field maintenance, including component repair and backup support to the AMCs.

Which Army depot is the main sustainment-level facility for rotary-wing aircraft and components?

Answer: Corpus Christi Army Depot

Corpus Christi Army Depot (CCAD) in Texas is the Army's main helicopter overhaul and repair depot.

On an aviation Maintenance Allocation Chart (MAC), which code stands for operator/crew maintenance?

Answer: C

Code C on the MAC marks tasks done by the operator or crew.

On an aviation MAC, which code stands for depot maintenance?

Answer: D

Code D marks depot-level tasks, which are part of sustainment maintenance.

Which MAC codes fall under field maintenance in the two-level system?

Answer: C, O, and F

Crew (C), unit/AVUM (O), and intermediate/AVIM (F) tasks are all field maintenance.

Which MAC codes fall under sustainment maintenance?

Answer: H and D

General support (H) and depot (D) tasks make up sustainment maintenance.

In which publication would a mechanic look for the MAC for a specific aircraft?

Answer: The aircraft's maintenance technical manual (-23 series)

The MAC is published in the aircraft's maintenance technical manuals and shows which level is allowed to do each task.

A unit finds a task that the MAC assigns to a higher level. What is the normal action?

Answer: Evacuate the item or request support from the authorized level

Units do only the tasks the MAC authorizes for them and pass higher-level work to the authorized maintenance level.

Which regulation sets Army maintenance policy, including the two-level maintenance system?

Answer: AR 750-1

AR 750-1, Army Materiel Maintenance Policy, sets out the field and sustainment maintenance structure.

Which task is typically done at the field level by an aviation maintenance company?

Answer: Phase maintenance inspection

Phase inspections are scheduled field maintenance done by the AMC, sometimes with help from the ASC.

An engine needs full teardown and overhaul. At which level is that normally done?

Answer: Sustainment (depot)

Complete component overhaul is a sustainment task done at depot or by approved sustainment sources.

Which work is the Aviation Support Company most likely to do instead of the AMC?

Answer: Back-shop component repair such as NDI and composite repair

The ASC has specialized back shops for higher-level field tasks like nondestructive inspection and component repair.

Army National Guard Theater Aviation Sustainment Maintenance Groups (TASMGs) mainly provide which kind of support?

Answer: Sustainment-level and high-end field maintenance

TASMGs do sustainment and higher-level field maintenance that adds to depot capacity.

Which task is a crew-level (C) maintenance task?

Answer: Preflight inspection and servicing

Crew-level tasks include preflight, daily inspection, and basic servicing.

What is the main benefit of the two-level maintenance system compared with the older multi-level system?

Answer: Fewer handoffs and quicker repair cycle

Two-level maintenance cuts down on hand-offs between levels, which speeds up repairs and lowers the logistics footprint.