Hartzell Engine Technologies LLC

Hartzell Engine Technologies LLC, doing business as Kelly Aerospace Energy Systems, is a Montgomery, Alabama-based aerospace component manufacturer that supplies spark igniters, ignition coils, control assemblies, valve assemblies, tube assemblies, and related electrical and mechanical aircraft components to the Department of Defense as a prime contractor on full-and-open federal contracts. The company is a for-profit limited liability company with no SBA set-aside designations across its prime footprint; it competes predominantly in full-and-open procurements, though one Total Small Business award appears in the recent record.

Hartzell Engine Technologies operates as a specialized supplier within the military aviation supply chain, with a customer concentration heavily skewed toward the Defense Logistics Agency (DLA) and the Army's aviation and missile commands. The top five funding agencies account for 95% of recent awards. DLA Aviation dominates by award count (137 awards, $6.1 million combined potential value) but the Army's Aviation and Missile Life Cycle Management Command (AMLCM) anchors the dollar value (21 awards, $10.4 million combined potential value). DLA Land and Maritime follows with 69 awards valued at $1.1 million, DLA Troop Support Construction and Equipment carries 16 awards ($320 thousand), and the Army's PEO Aviation accounts for 10 awards. The ranking divergence signals that AMLCM places fewer but higher-value delivery orders, while DLA Aviation generates volume through transactional purchase orders for consumable components.

Recent representative prime work includes a $369,075 delivery order from AMLCM for overhaul of CH-47 control assemblies (completion September 2025), a $457,560 delivery order also from AMLCM for igniters and spark plugs supporting the CH-47F Block II program (completed December 2024), a $398,480 AMLCM delivery order for CH-47 control assemblies (completed October 2023), and a $134,550 AMLCM delivery order for 30 control assemblies (completed May 2024). Against DLA Aviation, Hartzell holds a $250,000 indefinite delivery contract running through September 2027 for aircraft ignition coil components, which has generated multiple task orders in the $1,500 to $2,100 range. DLA orders tend toward smaller purchase orders for individual components: a $448,575 DLA Aviation order for pump control assemblies (January 2026), a $133,480 DLA Troop Support order for spark fuel igniters (October 2025), and dozens of sub-$25,000 orders for tube assemblies, housings, gaskets, and filters.

Activity has been variable year to year—12 awards in 2022, 25 in 2023, 15 in 2024, 19 in 2025, and 3 recorded through early 2026—across a portfolio of 267 total awards (96% prime, 4% sub) since 2009. Combined potential value stands at $20.4 million, with $10.6 million obligated (52% realization rate). No significant recompete cliff signal is evident in the source; the company's parent indefinite delivery contract with DLA Aviation extends through September 2027, and the higher-value AMLCM delivery orders are discrete awards with completion dates through mid-2026.

Hartzell operates as a subcontractor primarily to The Boeing Company on CH-47 and CH-47F aircraft electromechanical (EHM) and common aerospace commodities work, with multiple sub awards dated between April 2024 and January 2026. The company also maintains a named subsidiary, Acorn Welding LTD, a goods manufacturer. The source carries evidence of established relationships with Lockheed Martin Corporation and other primes, referenced in the summary text but not detailed in the sub-award listings.

Hartzell's capability portfolio centers on ignition systems (spark igniters, ignition coils, housings), control assemblies, valve assemblies, tube assemblies, vibrators, filters, diaphragms, nozzles, and mechanical gaskets—components classified across aircraft air-conditioning and pressurizing equipment (97 awards), miscellaneous electric power and distribution equipment (20 awards), industrial valve manufacturing (19 awards), and associated auxiliary equipment PSC and NAICS categories. The company is a sustained supplier to the CH-47F Modernized Cargo Helicopter program, where it delivers components supporting modernization and fleet sustainment operations. Competitive posture is full-and-open; the vendor does not rely on set-aside vehicles and does not hold positions on government-wide acquisition contracts or multi-agency IDIQs named in the source.