--- title: "Aerospace Supplier 13Fs: TransDigm, Howmet, HEICO Decoder" type: learn slug: aerospace-supplier-13f-tdg-howmet-decoder canonical_url: https://13finsight.com/learn/aerospace-supplier-13f-tdg-howmet-decoder published_at: 2026-05-16T01:52:54.763Z updated_at: 2026-05-16T01:52:57.128Z author: Sarah Mitchell author_title: Education Editor author_url: https://13finsight.com/authors/sarah-mitchell word_count: 385 locale: en source: 13F Insight --- # Aerospace Supplier 13Fs: TransDigm, Howmet, HEICO Decoder > TransDigm, Howmet Aerospace, HEICO, Curtiss-Wright, and Moog anchor US aerospace supplier 13F positioning. Aftermarket high-margin economics, commercial aerospace cycle, defense plus space exposure, and proprietary component franchises drive distinctive institutional patterns. US aerospace supplier equities form a distinctive specialty-manufacturing corner of institutional 13F positioning with extreme franchise quality. TransDigm Group, Howmet Aerospace (HWM), HEICO Corporation (HEI), Curtiss-Wright (CW), and Moog (MOG.A) anchor the cohort. Multi-year aftermarket high-margin economics, commercial aerospace cycle dynamics, defense and space exposure, and proprietary component franchise economics drive distinctive institutional patterns. Reading aerospace supplier 13F positioning requires understanding the aftermarket framework plus the multi-year commercial-and-defense cycle dynamics.The aerospace supplier business modelAerospace suppliers face four primary economic drivers:Aftermarket high-margin economics. Aerospace aftermarket parts and services generate 35-50%+ EBITDA margins versus 15-25% for OEM original equipment sales. Multi-decade installed base drives recurring aftermarket revenue.Commercial aerospace cycle. Multi-year commercial aircraft production cycles plus airline fleet replacement plus maintenance cycles drive multi-cycle revenue.Defense and space exposure. Multi-year defense procurement plus emerging space industry (SpaceX, Blue Origin, satellite constellations) drives multi-segment demand.Proprietary component franchises. TransDigm plus HEICO operate proprietary aerospace component portfolios with limited substitutes, generating premium pricing.Major US aerospace suppliersTransDigm Group (TDG)Aerospace components specialist with multi-decade roll-up acquisition strategy. Proprietary aerospace components with high-margin aftermarket economics. Multi-decade ROIC compounding through capital allocation.Howmet Aerospace (HWM)Engine products (turbine blades, structural castings) plus fastening systems plus engineered structures plus forged wheels. Post-2020 Arconic separation pure-play aerospace focus.HEICO Corporation (HEI)Diversified across Flight Support (aftermarket parts, repair) plus Electronic Technologies (defense, space, medical electronics). Multi-decade family-led capital allocation.Curtiss-Wright (CW)Defense plus commercial plus power generation specialty engineered products. Multi-decade defense technology focus.Moog (MOG.A)Aerospace plus defense plus industrial precision motion control systems. Multi-year strategic transformation.How institutional managers position around aerospace suppliersThree patterns:Pattern 1: Proprietary-franchise concentrationTDG-concentrated growth manager positions reflect proprietary aerospace component franchise plus multi-decade compounding thesis.Pattern 2: Engine-products positioningHWM-concentrated active manager positions reflect engine products plus aftermarket thesis.Pattern 3: Defense-and-space positioningHEI and CW-concentrated active manager positions reflect defense plus emerging space exposure thesis.How to read aerospace supplier 13F positioningThree rules:Rule 1: Identify aftermarket mixAftermarket mix determines margin profile and revenue durability.Rule 2: Watch commercial aerospace cycleBoeing plus Airbus production rates drive multi-quarter visibility.Rule 3: Cross-check defense plus space exposureMulti-year defense procurement plus emerging space industry drives diversification.What aerospace supplier positioning signalsProprietary-franchise conviction. Concentrated TDG positions signal proprietary franchise plus compounding thesis.Engine-products conviction. Concentrated HWM positions signal engine plus aftermarket thesis.Defense-space conviction. Concentrated HEI, CW positions signal defense plus space thesis.For real-time tracking of aerospace supplier 13F activity, see the institutional signals feed. ## FAQ ### What are the major US aerospace suppliers? Five major US aerospace suppliers: (1) TransDigm Group (TDG) — proprietary aerospace components with roll-up strategy; (2) Howmet Aerospace (HWM) — engine products, fastening, structures, forged wheels; (3) HEICO Corporation (HEI) — Flight Support (aftermarket) plus Electronic Technologies; (4) Curtiss-Wright (CW) — defense plus commercial specialty engineered products; (5) Moog (MOG.A) — aerospace plus defense precision motion. ### Why is aerospace aftermarket so profitable? Aerospace aftermarket parts and services generate 35-50%+ EBITDA margins versus 15-25% for OEM equipment. Multi-decade installed aircraft base requires recurring maintenance plus replacement parts. Aerospace proprietary designs plus FAA certification limit substitution. Multi-year aircraft service life (25-35 year commercial lifecycle) produces multi-decade recurring revenue. Reading aftermarket mix disclosure drives institutional positioning. ### What is TransDigm's roll-up strategy? TransDigm Group operates multi-decade roll-up acquisition strategy targeting proprietary aerospace components with high aftermarket margin economics. Multi-billion-dollar acquisitions (Esterline 2019, plus smaller deals) consolidate proprietary aerospace component portfolios. Multi-year ROIC compounding through capital allocation plus operational discipline produces premium valuation. Concentrated growth manager TDG positions reflect proprietary franchise plus compounding thesis. ### How does Howmet's engine products business work? Howmet Aerospace's engine products segment manufactures turbine blades, structural castings, engine cases for commercial and military aircraft engines. Multi-year jet engine production at GE Aerospace, Pratt & Whitney (RTX), Rolls-Royce drives demand. Engine aftermarket plus engine overhaul cycles drive recurring revenue. Howmet's pure-play aerospace focus post-2020 Arconic separation differs from prior diversified Alcoa heritage. Reading engine production data drives positioning. ### What is HEICO's dual-segment franchise? HEICO Corporation operates two segments: (1) Flight Support — FAA-approved aftermarket commercial aircraft parts plus repair-and-overhaul services through acquired specialty companies; (2) Electronic Technologies — defense, space, medical, industrial electronic components. Multi-decade family-led (Mendelson family) capital allocation plus disciplined acquisitions drive franchise compounding. Multi-decade ROIC plus selective acquisitions support multi-cycle thesis. ### What signals aerospace supplier cycle inflections? Four signals: (1) Boeing plus Airbus production rates plus order book; (2) airline fleet replacement plus maintenance cycle data; (3) defense procurement plus emerging space launch activity; (4) aftermarket revenue plus margin trajectory. Concentrated 13F changes around these signals reveal manager cycle reading. --- Source: 13F Insight — https://13finsight.com/learn/aerospace-supplier-13f-tdg-howmet-decoder Author: Sarah Mitchell — https://13finsight.com/authors/sarah-mitchell Last updated: 2026-05-16T01:52:57.128Z