The Montana Air National Guard, Great Falls, MT is seeking information from small business companies to provide NP-2000 propeller maintenance stands. These stands will be used for storage and for completing maintenance. Funding is currently available for this acquisition. The propeller stands will primarily fall under NAICS 336413, Other Aircraft Parts and Auxiliary Equipment Manufacturing.

Maintenance Stand for Propellers

This maintenance propeller stand will be utilized on C-130H’s or E-2 Hawkeye modified with the NP-2000 propeller system. The trailer would be universal to both airframes. This trailer/stand will be utilized for ground maintenance and storage of propellers.

NP-2000 propeller (with spinner) has a total weight of 1,078lbs. Stand shall be designed in a way that allows for storage of none, one, or two propellers at any given time. Design shall ensure that the stand can be used for maintenance and moved without tipping.

Footprint of stand/trailer shall be determined by designers that would account of the propeller weight.

Stand

Stand shall hold two props vertically on opposing sides with the rear of both props facing the middle work platform.

Must be mobile by hand and with a tow bar with a Lunette ring. Tow bar must be either removable or stowable as to not present a trip hazard.

Must have the ability to “lock” the entire stand into place to prevent uncontrolled/wanted movement.

Rear of the Props must be easily accessible for maintenance actions. With a work platform big enough and rated for 3 people. Personnel max approx. weight 750 LB. 3000LB total capacity to include both propellers.

Ability to rotate the prop 360 degrees and lock from spinning during maintenance.

Engineered to be useable and mobile with only one prop mounted without balance issues or presenting a tipping hazard

Railing to prevent a fall hazard and eliminate any need for fall arrest harnesses. Min 42 inches per OSHA. Railing height kept to the shortest possible height.

Prop mounting shaft rough dimensions. Cylindrical 11 inches long, 4 ½ inches in diameter. Retaining nut to secure the prop.

Additional Items

Propeller mount should be as far inboard as possible to allow for maintenance while maintaining enough blade clearance to adequately, safely and without impediment, rotate the propeller with the blades at any pitch.

Approximately 9ft 4in to the prop mounting shaft from ground level. Mount should be high enough to allow for adequate clearance from the ground while not being overly lofty making access the front of the propeller while mounted difficult.

Work platform will require access via a stairwell allowing maintenance personnel to access it while carrying tools/equipment.

Quote shall include the cost of delivery and installation if necessary.

The manufacturer shall supply all manuals such as operation instructions, parts lists, and diagrams. Furthermore, the manufacturer shall supply any other data pertinent to the operation of the unit.

Stand commercial warrant shall apply.

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