TransDigm Acquires Jet Parts Engineering and Victor Sierra Aviation for $2.2 Billion

Transaction Overview and Strategic Rationale

Vance Street Capital, the private equity sponsor, has held both portfolio companies for approximately eight years and is now exiting through the sale to TransDigm, a publicly traded aerospace components manufacturer[1]. The transaction is structured as a binding stock purchase agreement and remains subject to customary closing conditions[1][2].

The acquisition aligns with TransDigm’s core strategy of acquiring highly specialized, engineered aerospace products with strong aftermarket demand. Both companies operate in niche segments with limited competition and high barriers to entry—characteristics that typically support pricing power and margin expansion in aerospace supply chains.

Portfolio Company Profiles

Jet Parts Engineering, headquartered in Seattle, designs and manufactures aftermarket aerospace components, including Parts Manufacturer Approval (PMA) parts and repair solutions[1]. The company serves commercial, regional, and cargo airline operators, as well as maintenance, repair, and overhaul (MRO) providers—segments that have experienced sustained demand recovery post-pandemic.

Victor Sierra Aviation Holdings, based in Baldwin City, Kansas, supplies aftermarket parts primarily to the general and business aviation markets through a portfolio of brands including McFarlane Aviation, Tempest Aero Group, and Aviation Products Systems[1]. The company’s diversified brand structure provides cross-selling opportunities and customer reach across multiple aviation segments.

Exit Dynamics and Private Equity Performance

The $2.2 billion valuation represents a significant exit for Vance Street Capital, reflecting strong performance in the aerospace aftermarket sector. Nic Janneck, a partner at Vance Street, noted that both companies benefited from founder-led operational excellence and that the partnership “has been a privilege” over the eight-year holding period[1]. This language suggests healthy operational improvements and value creation during the PE ownership period.

The transaction occurs within a broader context of elevated secondary market activity in private markets. Secondary deal volume in private assets reached $226 billion in 2025—a 41 percent increase from 2024—indicating robust exit opportunities for PE sponsors across sectors[5].

TransDigm’s Acquisition Momentum

This deal represents TransDigm’s continued M&A activity in aerospace components. The company recently announced the acquisition of Stellant Systems, Inc. for $960 million in December 2025, demonstrating sustained capital deployment in the sector[7]. TransDigm’s acquisition strategy focuses on bolt-on deals that expand its portfolio of specialized, high-margin aerospace products with recurring aftermarket revenue.

Victor Sierra CEO Scott Still stated that “TransDigm’s deep aerospace expertise, operating philosophy and focus on highly specialized, engineered products make it an ideal home for our businesses”[1]—language that underscores the strategic fit and suggests minimal operational disruption post-close.

Industry Implications

The transaction reflects continued consolidation in aerospace aftermarket supply, where larger platforms like TransDigm can achieve scale efficiencies, cross-selling synergies, and enhanced customer relationships. For deal advisors and investment professionals tracking aerospace M&A trends, this acquisition signals sustained investor appetite for specialized aerospace suppliers with recurring revenue models and pricing power in inflationary environments.

The deal is expected to close subject to standard closing conditions, though no specific timeline has been disclosed.