Top 100 Contractors in PSC 28: Engines and Turbines and Component, FY2021

Name: Top 100 Contractors in PSC 28: Engines and Turbines and Component, FY2021
Creator: GovTribe

Parent companies by net contract obligations Oct 1, 2020 – Sep 30, 2021 Code page on GovTribe

The top 10 won 85% of FY2021 PSC 28 contract dollars

Contract obligations: $6,583,024,150 Net of deobligations, by contracts coded PSC 28 or a code under it
Contractors: 677 Parent companies with an obligation
Largest contractor: RTX Corporation $2.46 billion, 33.4% of obligations
Data as of: Oct 14, 2026

Contract actions from FPDS (SAM.gov). How the rankings work · Download all 100 rows as CSV

Full ranking

Rank	Contractor	Net obligations	Share	Trend
1	RTX Corporation 11 awardees, including Pratt & Whitney Military Aftermarket Services, Inc., Hamilton Sundstrand Corporation and Goodrich Corporation Top agencies Navy (Department of the Navy) USAF (Department of the Air Force) DLA (Defense Logistics Agency)	$2,455,442,492	33.4%	Rank history: #1 in FY2022, #1 in FY2023, #1 in FY2024 and #1 in FY2025; unchanged since FY2020.
2	General Electric Company 10 awardees, including Alstom Power Inc., GE Aviation Systems LLC and GE Renewables US LLC Top agencies Navy (Department of the Navy) USAF (Department of the Air Force) Army (Department of the Army)	$1,991,975,149	27.1%	Rank history: #2 in FY2022, #2 in FY2023, #2 in FY2024 and #2 in FY2025; unchanged since FY2020.
3	Rolls-Royce Military Aero Engines Ltd 4 awardees, including Rolls-Royce Solutions America Inc., Rolls-Royce Corporation and Rolls-Royce Marine North America Inc. Top agencies Army (Department of the Army) Navy (Department of the Navy) USAF (Department of the Air Force)	$780,082,681	10.6%	Rank history: #4 in FY2022, #5 in FY2023, #6 in FY2024 and not on the FY2025 list; up 1 since FY2020.
4	Honeywell International Inc. 8 awardees Top agencies Army (Department of the Army) USAF (Department of the Air Force) DLA (Defense Logistics Agency)	$426,794,779	5.8%	Rank history: #3 in FY2022, #4 in FY2023, #3 in FY2024 and #3 in FY2025; up 9 since FY2020.
5	CFM International Inc. Top agencies USAF (Department of the Air Force) DLA (Defense Logistics Agency) Navy (Department of the Navy)	$286,959,453	3.9%	Rank history: #5 in FY2022, #3 in FY2023, #4 in FY2024 and #6 in FY2025; unchanged since FY2020.
6	Rolls-Royce Corporation 2 awardees Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency) USAF (Department of the Air Force)	$79,186,054	1.1%	Rank history: #30 in FY2022, not on the FY2023 list, #8 in FY2024 and not on the FY2025 list; up 8 since FY2020.
7	Standardaero Aviation Holdings, Inc. 6 awardees, including Standard Aero (San Antonio) Inc., Pas Technologies Inc. and Jet Aviation Specialists LLC Top agencies USAF (Department of the Air Force) Navy (Department of the Navy)	$60,174,122	0.8%	Rank history: #8 in FY2022, #16 in FY2023, #27 in FY2024 and not on the FY2025 list; up 11 since FY2020.
8	Oshkosh Corp 2 awardees, including Oshkosh Defense LLC and JLG Industries, Inc. Top agencies Army (Department of the Army) Navy (Department of the Navy) DLA (Defense Logistics Agency)	$54,228,354	0.7%	Rank history: #38 in FY2022, #62 in FY2023, #35 in FY2024 and #11 in FY2025; up 8 since FY2020.
9	Thomas Scientific LLC 4 awardees, including Chromalloy Component Services Inc., Chromalloy San Diego Corp and Chromalloy, S.A. De C.V. Top agencies USAF (Department of the Air Force) Navy (Department of the Navy)	$47,294,758	0.6%	Rank history: #16 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in FY2020.
10	Cummins Inc. 7 awardees Top agencies Army (Department of the Army) DLA (Defense Logistics Agency) DOJ (Department of Justice)	$43,163,660	0.6%	Rank history: #11 in FY2022, #6 in FY2023, #5 in FY2024 and #5 in FY2025; up 2 since FY2020.
11	Lockheed Martin Corporation 6 awardees, including Derco Aerospace, Inc. and Sikorsky Aircraft Corporation Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency) Army (Department of the Army)	$36,946,515	0.5%	Rank history: #14 in FY2022, #10 in FY2023, #18 in FY2024 and #41 in FY2025; down 3 since FY2020.
12	Government of Canada Through Canadian Commercial Corporation Top agencies USAF (Department of the Air Force) Navy (Department of the Navy) DLA (Defense Logistics Agency)	$25,805,300	0.4%	Rank history: #13 in FY2022, #18 in FY2023, #83 in FY2024 and not on the FY2025 list; up 10 since FY2020.
13	Aarcorp 2 awardees, including AAR Supply Chain, Inc. and AAR Allen Services, Inc. Top agencies DLA (Defense Logistics Agency) Army (Department of the Army) USAF (Department of the Air Force)	$22,650,430	0.3%	Rank history: #6 in FY2022, #11 in FY2023, #9 in FY2024 and not on the FY2025 list; up 7 since FY2020.
14	Fairbanks Morse LLC 5 awardees Top agencies Navy (Department of the Navy) DHS (Department of Homeland Security) DLA (Defense Logistics Agency)	$17,846,223	0.2%	Rank history: #9 in FY2022, #7 in FY2023, #10 in FY2024 and #26 in FY2025; up 12 since FY2020.
15	Aerojet Rocketdyne Holdings, Inc. Through Aerojet Rocketdyne of DE, Inc. Top agencies USAF (Department of the Air Force)	$14,300,000	0.2%	Rank history: #24 in FY2022 and not on the FY2023–FY2025 lists; up 9 since FY2020.
16	Am General LLC 2 awardees Top agencies Army (Department of the Army) DLA (Defense Logistics Agency)	$12,403,456	0.2%	Rank history: #10 in FY2022, #14 in FY2023, #14 in FY2024 and #10 in FY2025; new, not ranked in FY2020.
17	Caterpillar Inc. 2 awardees, including Solar Turbines Incorporated Top agencies Army (Department of the Army) DLA (Defense Logistics Agency) USDA (Department of Agriculture)	$11,610,559	0.2%	Rank history: #33 in FY2022, #19 in FY2023, #42 in FY2024 and #25 in FY2025; up 19 since FY2020.
18	Vigor Works LLC 3 awardees, including Chromalloy Component Services Inc., Chromalloy San Diego Corp and Chromalloy Gas Turbine LLC Top agencies USAF (Department of the Air Force)	$10,321,285	0.1%	Rank history: not on the FY2022–FY2025 lists; up 1 since FY2020.
19	Aerojet Rocketdyne, Inc. Top agencies NASA (National Aeronautics and Space Administration)	$8,415,911	0.1%	Rank history: #12 in FY2022, #12 in FY2023, #46 in FY2024 and not on the FY2025 list; down 2 since FY2020.
20	Chromalloy Gas Turbine LLC Top agencies USAF (Department of the Air Force)	$7,609,237	0.1%	Rank history: #26 in FY2022, #26 in FY2023, #23 in FY2024 and #30 in FY2025; up 18 since FY2020.
21	EOS Inc. 2 awardees, including Sidecar Enterprises Inc. Top agencies DLA (Defense Logistics Agency) Army (Department of the Army)	$7,234,482	0.1%	Rank history: #82 in FY2022, #25 in FY2023, #25 in FY2024 and #8 in FY2025; up 2 since FY2020.
22	Northrop Grumman Systems Corporation Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency)	$6,068,515	0.1%	Rank history: not on the FY2022–FY2025 lists; up 15 since FY2020.
23	Transdigm Group Incorporated 5 awardees, including Aerocontrolex Group, Inc., Transdigm Inc. and Arkwin Industries, Inc. Top agencies DLA (Defense Logistics Agency)	$5,910,491	0.1%	Rank history: #29 in FY2022, #21 in FY2023 and not on the FY2024–FY2025 lists; up 10 since FY2020.
24	MTU Aero Engines Holding AG 2 awardees, including Vericor Power Systems LLC Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency)	$5,884,963	0.1%	Rank history: #91 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in FY2020.
25	Jgils, LLC Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$5,819,282	0.1%	Rank history: #68 in FY2022, #23 in FY2023, #34 in FY2024 and #17 in FY2025; up 10 since FY2020.
26	Transaero, Inc. Top agencies DLA (Defense Logistics Agency)	$5,701,993	0.1%	Rank history: #39 in FY2022, not on the FY2023 list, #45 in FY2024 and #22 in FY2025; up 14 since FY2020.
27	Pioneer Industries, LLC Top agencies DLA (Defense Logistics Agency)	$5,360,917	0.1%	Rank history: #85 in FY2022 and not on the FY2023–FY2025 lists; up 16 since FY2020.
28	Paradigm Manchester Inc. 2 awardees, including Turbocombustor Technology, Inc. Top agencies DLA (Defense Logistics Agency) USAF (Department of the Air Force)	$5,289,339	0.1%	Rank history: #18 in FY2022, #27 in FY2023, #29 in FY2024 and not on the FY2025 list; up 37 since FY2020.
29	Bollinger Shipyards Inc Through Chand, L.L.C. Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$5,168,092	0.1%	Rank history: #21 in FY2022, #22 in FY2023 and not on the FY2024–FY2025 lists; up 17 since FY2020.
30	Asia Pacific Aerospace Pty. Ltd. Top agencies Navy (Department of the Navy)	$4,924,455	0.1%	Rank history: #31 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in FY2020.
31	The Boeing Company 7 awardees, including Boeing Distribution, Inc., Boeing Distribution Services Defense LLC and Boeing Distribution Services X, Inc. Top agencies Navy (Department of the Navy) USAF (Department of the Air Force) Army (Department of the Army)	$4,635,550	0.1%	Rank history: #7 in FY2022, #8 in FY2023, #17 in FY2024 and #31 in FY2025; down 22 since FY2020.
32	Standard Aero (San Antonio) Inc. Top agencies USAF (Department of the Air Force)	$4,459,022	0.1%	Rank history: not on the FY2022–FY2025 lists; down 5 since FY2020.
33	Northrop Grumman Corporation 6 awardees, including Northrop Grumman Systems Corporation Top agencies USAF (Department of the Air Force) DLA (Defense Logistics Agency) Navy (Department of the Navy)	$3,685,954	0.1%	Rank history: #19 in FY2022, #15 in FY2023, #31 in FY2024 and #14 in FY2025; up 24 since FY2020.
34	Union Machine Company of Lynn, Inc. Top agencies DLA (Defense Logistics Agency) USAF (Department of the Air Force)	$3,109,725	<0.1%	Rank history: #36 in FY2022, #45 in FY2023, #72 in FY2024 and #29 in FY2025; up 16 since FY2020.
35	Melton Sales & Service Top agencies Army (Department of the Army) DLA (Defense Logistics Agency) Navy (Department of the Navy)	$2,828,298	<0.1%	Rank history: #37 in FY2022, #46 in FY2023, #62 in FY2024 and #39 in FY2025; up 6 since FY2020.
36	S & K Aerospace, LLC Top agencies Navy (Department of the Navy)	$2,768,402	<0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
37	Pacific Power Group LLC Top agencies DHS (Department of Homeland Security) Navy (Department of the Navy) Army (Department of the Army)	$2,643,415	<0.1%	Rank history: #15 in FY2022, #33 in FY2023, #28 in FY2024 and #42 in FY2025; up 17 since FY2020.
38	Numet Machining Techniques LLC Through Numet Acquisition Numet, Inc. Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$2,613,863	<0.1%	Rank history: #17 in FY2022, #50 in FY2023, #32 in FY2024 and not on the FY2025 list; up 119 since FY2020.
39	Goodrich Corporation Top agencies USAF (Department of the Air Force)	$2,548,751	<0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
40	Royal Flight of Oman Top agencies NASA (National Aeronautics and Space Administration)	$2,500,000	<0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
41	Heico Aerospace Corporat 5 awardees, including Jet Avion Corp, Seal Dynamics LLC and Thermal Structures, Inc. Top agencies DLA (Defense Logistics Agency)	$2,400,385	<0.1%	Rank history: #32 in FY2022, #43 in FY2023, #50 in FY2024 and #94 in FY2025; up 79 since FY2020.
42	Penn Detroit Diesel Allison LLC Through Penn Power Group LLC Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$2,374,172	<0.1%	Rank history: #28 in FY2022, #30 in FY2023, #97 in FY2024 and not on the FY2025 list; up 21 since FY2020.
43	Dela Technology Corporation Top agencies DLA (Defense Logistics Agency)	$2,361,136	<0.1%	Rank history: #45 in FY2022, #65 in FY2023, not on the FY2024 list and #46 in FY2025; up 8 since FY2020.
44	Barnes Group Inc. 5 awardees Top agencies USAF (Department of the Air Force) DLA (Defense Logistics Agency)	$2,179,965	<0.1%	Rank history: #44 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in FY2020.
45	Curtiss-Wright Corporation 3 awardees, including Curtiss-Wright Electro-Mechanical Corp Top agencies Navy (Department of the Navy)	$2,128,314	<0.1%	Rank history: #35 in FY2022, #63 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.
46	Fincantieri Marine Systems North America Inc. Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$2,112,818	<0.1%	Rank history: not on the FY2022 list, #35 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.
47	Shapes Group Ltd Co. Top agencies DLA (Defense Logistics Agency)	$2,082,480	<0.1%	Rank history: not on the FY2022 list, #52 in FY2023, #71 in FY2024 and not on the FY2025 list; up 57 since FY2020.
48	Pacific Sky Supply, Inc. Top agencies USAF (Department of the Air Force) DLA (Defense Logistics Agency) DHS (Department of Homeland Security)	$1,981,027	<0.1%	Rank history: #71 in FY2022, #34 in FY2023, #82 in FY2024 and #62 in FY2025; up 24 since FY2020.
49	Optimum Vehicle Logistics LLC Top agencies Army (Department of the Army)	$1,900,101	<0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
50	Fiber Dynamics, Inc. Top agencies USAF (Department of the Air Force)	$1,743,703	<0.1%	Rank history: #22 in FY2022, #55 in FY2023, #12 in FY2024 and #35 in FY2025; up 112 since FY2020.
51	Demusz Mfg. Co., Inc. Top agencies USAF (Department of the Air Force) DLA (Defense Logistics Agency)	$1,715,912	<0.1%	Rank history: not on the FY2022–FY2025 lists; up 24 since FY2020.
52	C.f. Roark Welding & Engineering Company, Incorporated Top agencies USAF (Department of the Air Force) DLA (Defense Logistics Agency)	$1,674,855	<0.1%	Rank history: not on the FY2022–FY2023 lists, #16 in FY2024 and not on the FY2025 list; up 48 since FY2020.
53	Unico Mechanical Corp. Top agencies Army (Department of the Army)	$1,582,092	<0.1%	Rank history: not on the FY2022–FY2025 lists; up 71 since FY2020.
54	Puckett Machinery Company Top agencies Commerce (Department of Commerce) DHS (Department of Homeland Security)	$1,531,766	<0.1%	Rank history: not on the FY2022–FY2025 lists; up 38 since FY2020.
55	Argo Turboserve Corporation 2 awardees Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$1,487,652	<0.1%	Rank history: #76 in FY2022, not on the FY2023 list, #49 in FY2024 and not on the FY2025 list; up 15 since FY2020.
56	Tecmotiv Corporation Through Tecmotiv (Usa), Inc. Top agencies DLA (Defense Logistics Agency) Army (Department of the Army)	$1,393,013	<0.1%	Rank history: #51 in FY2022 and not on the FY2023–FY2025 lists; down 28 since FY2020.
57	Graham Corp Through Barber-Nichols, LLC Top agencies Navy (Department of the Navy)	$1,365,292	<0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
58	Ferrotherm, LLC Top agencies DLA (Defense Logistics Agency) USAF (Department of the Air Force)	$1,287,218	<0.1%	Rank history: #53 in FY2022, #81 in FY2023, #79 in FY2024 and not on the FY2025 list; new, not ranked in FY2020.
59	PTS Aviation, LLC Top agencies USAF (Department of the Air Force)	$1,161,000	<0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
60	Central Florida Yamaha Inc. Top agencies Navy (Department of the Navy) DOI (Department of the Interior) Army (Department of the Army)	$1,119,857	<0.1%	Rank history: #74 in FY2022, #54 in FY2023, #70 in FY2024 and #98 in FY2025; up 17 since FY2020.
61	Freightliner of Savannah, Inc. Top agencies Army (Department of the Army) DLA (Defense Logistics Agency)	$1,022,880	<0.1%	Rank history: not on the FY2022–FY2023 lists, #67 in FY2024 and #79 in FY2025; down 14 since FY2020.
62	PCX Inc. Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$983,657	<0.1%	Rank history: not on the FY2022–FY2025 lists; up 80 since FY2020.
63	Stauffer Diesel, Inc. Top agencies USAF (Department of the Air Force)	$966,240	<0.1%	Rank history: #100 in FY2022 and not on the FY2023–FY2025 lists; up 110 since FY2020.
64	Electron Beam Development Corp Top agencies USAF (Department of the Air Force)	$958,800	<0.1%	Rank history: #89 in FY2022 and not on the FY2023–FY2025 lists; up 51 since FY2020.
65	Johnson & Towers Inc. 2 awardees, including Western Branch Diesel, LLC Top agencies Army (Department of the Army) DLA (Defense Logistics Agency) DHS (Department of Homeland Security)	$958,135	<0.1%	Rank history: #54 in FY2022, #32 in FY2023, #26 in FY2024 and #37 in FY2025; up 207 since FY2020.
66	Flight Support, Inc. Top agencies USAF (Department of the Air Force)	$954,156	<0.1%	Rank history: #81 in FY2022, #39 in FY2023, #98 in FY2024 and not on the FY2025 list; up 239 since FY2020.
67	Norcatec LLC Top agencies DLA (Defense Logistics Agency) USAF (Department of the Air Force)	$927,877	<0.1%	Rank history: #59 in FY2022, #84 in FY2023, not on the FY2024 list and #55 in FY2025; up 84 since FY2020.
68	Fluid Mechanics LLC Top agencies DLA (Defense Logistics Agency)	$872,560	<0.1%	Rank history: not on the FY2022–FY2025 lists; up 163 since FY2020.
69	Aero-Glen International LLC Top agencies Army (Department of the Army)	$865,917	<0.1%	Rank history: not on the FY2022–FY2025 lists; up 45 since FY2020.
70	Aerometals, Inc. Top agencies DLA (Defense Logistics Agency)	$847,077	<0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
71	Kampi Components Co Inc. Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$829,755	<0.1%	Rank history: #50 in FY2022, #77 in FY2023, not on the FY2024 list and #51 in FY2025; down 4 since FY2020.
72	Essex Electro Engineers Inc. Top agencies USAF (Department of the Air Force)	$817,000	<0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
73	Parker-Hannifin Corporation 3 awardees, including Lord Corporation Top agencies DLA (Defense Logistics Agency)	$812,251	<0.1%	Rank history: not on the FY2022 list, #97 in FY2023 and not on the FY2024–FY2025 lists; down 2 since FY2020.
74	Cambridge International Systems, Inc. Top agencies USAF (Department of the Air Force)	$793,164	<0.1%	Rank history: #95 in FY2022 and not on the FY2023–FY2025 lists; up 36 since FY2020.
75	Volkswagen AG 2 awardees, including Everllence USA Inc. and Everllence Middle East and Africa L.l.c Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$789,186	<0.1%	Rank history: not on the FY2022–FY2025 lists; up 126 since FY2020.
76	Acmt, Inc. Top agencies USAF (Department of the Air Force) DLA (Defense Logistics Agency)	$718,658	<0.1%	Rank history: #52 in FY2022, #57 in FY2023, #39 in FY2024 and #12 in FY2025; down 21 since FY2020.
77	Triumph Group, Inc. 2 awardees, including Triumph Gear Systems, LLC and Triumph Actuation Systems - Connecticut, LLC Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency)	$665,315	<0.1%	Rank history: #69 in FY2022, #85 in FY2023, #81 in FY2024 and #84 in FY2025; up 35 since FY2020.
78	The Timken Company 2 awardees, including PCX Aerosystems-Manchester, LLC and Timken Gears & Services Inc. Top agencies USAF (Department of the Air Force) DLA (Defense Logistics Agency)	$622,345	<0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
79	ETI Tech LLC Through Starwin Industries, LLC Top agencies USAF (Department of the Air Force)	$612,711	<0.1%	Rank history: not on the FY2022–FY2025 lists; up 76 since FY2020.
80	Statz Corp Top agencies DLA (Defense Logistics Agency)	$610,362	<0.1%	Rank history: #88 in FY2022 and not on the FY2023–FY2025 lists; up 67 since FY2020.
81	American Turbo Systems Inc. Top agencies Army (Department of the Army)	$605,798	<0.1%	Rank history: not on the FY2022–FY2025 lists; up 44 since FY2020.
82	RTC Aerospace, LLC Through Logistical Support LLC Top agencies DLA (Defense Logistics Agency)	$605,005	<0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
83	IBP Consulting, Inc. Top agencies DLA (Defense Logistics Agency)	$586,487	<0.1%	Rank history: not on the FY2022–FY2025 lists; up 100 since FY2020.
84	General Motors Company Top agencies DLA (Defense Logistics Agency)	$564,239	<0.1%	Rank history: not on the FY2022–FY2025 lists; up 126 since FY2020.
85	AAA Marine Ventura LLC Top agencies DOI (Department of the Interior)	$561,195	<0.1%	Rank history: not on the FY2022–FY2025 lists; up 329 since FY2020.
86	Jamaica Bearings Co., Inc. 2 awardees Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$559,369	<0.1%	Rank history: #67 in FY2022 and not on the FY2023–FY2025 lists; up 17 since FY2020.
87	Brighton Cromwell LLC Top agencies DLA (Defense Logistics Agency)	$557,878	<0.1%	Rank history: not on the FY2022–FY2025 lists; down 55 since FY2020.
88	Thomas Instrument, Incorporated Top agencies DLA (Defense Logistics Agency)	$555,809	<0.1%	Rank history: #78 in FY2022, #96 in FY2023 and not on the FY2024–FY2025 lists; up 96 since FY2020.
89	Air New Zealand Engineering Services Top agencies Navy (Department of the Navy)	$554,410	<0.1%	Rank history: not on the FY2022–FY2025 lists; up 143 since FY2020.
90	ABB Inc. 2 awardees Top agencies DOT (Department of Transportation) DLA (Defense Logistics Agency)	$552,107	<0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
91	Woodward Governor Company 4 awardees, including Woodward, Inc., Woodward HRT Inc. and Woodward Fst, Inc. Top agencies DLA (Defense Logistics Agency)	$549,399	<0.1%	Rank history: #55 in FY2022, #47 in FY2023 and not on the FY2024–FY2025 lists; up 45 since FY2020.
92	Parts Life Inc. Top agencies DLA (Defense Logistics Agency)	$543,945	<0.1%	Rank history: not on the FY2022–FY2023 lists, #64 in FY2024 and not on the FY2025 list; up 238 since FY2020.
93	Stein Seal Company Top agencies DLA (Defense Logistics Agency)	$537,362	<0.1%	Rank history: #77 in FY2022, #83 in FY2023, not on the FY2024 list and #93 in FY2025; down 9 since FY2020.
94	Turbine Technics Inc. Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency)	$531,348	<0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
95	Lobo Ventures Ltd Top agencies DLA (Defense Logistics Agency)	$525,280	<0.1%	Rank history: not on the FY2022–FY2025 lists; up 69 since FY2020.
96	W. W. Williams Company LLC the 5 awardees, including The W.w. Williams Company, LLC Top agencies DLA (Defense Logistics Agency) DHS (Department of Homeland Security)	$520,486	<0.1%	Rank history: #34 in FY2022, #68 in FY2023, #52 in FY2024 and not on the FY2025 list; up 12 since FY2020.
97	Wartsila Defense Inc. 2 awardees, including Defense Maritime Solutions, Inc. and American Hydro LLC Top agencies DHS (Department of Homeland Security) DOI (Department of the Interior) Navy (Department of the Navy)	$505,322	<0.1%	Rank history: not on the FY2022–FY2025 lists; down 53 since FY2020.
98	Voith Hydro Inc. Top agencies DOI (Department of the Interior) Army (Department of the Army)	$496,455	<0.1%	Rank history: not on the FY2022–FY2025 lists; down 73 since FY2020.
99	Columbia Basin Helicopter, Inc. Top agencies Navy (Department of the Navy)	$495,627	<0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
100	Sunpower Corporation Through Hutchinson Aerospace & Industry, Inc. Top agencies DLA (Defense Logistics Agency)	$494,173	<0.1%	Rank history: not on the FY2022 list, #38 in FY2023 and not on the FY2024–FY2025 lists; up 11 since FY2020.

Show 75 more

100 of 677 contractors listed here. See the rest on GovTribe.

Rankings for the codes under PSC 28

Code	Net obligations	Largest contractor
2840 Gas Turbines and Jet Engines, Aircraft, Prime Moving; and Components	$5,068,803,157	RTX Corporation
2815 Diesel Engines and Components	$592,633,933	Rolls-Royce Military Aero Engines Ltd
2835 Gas Turbines and Jet Engines, Non-Aircraft; and Components	$434,351,532	Honeywell International Inc.
2810 Gasoline Reciprocating Engines, Aircraft Prime Mover; and Components	$134,306,289	Rolls-Royce Military Aero Engines Ltd
2895 Miscellaneous Engines and Components	$39,428,452	Lockheed Martin Corporation
2825 Steam Turbines and Components	$6,181,004	Curtiss-Wright Corporation
2805 Gasoline Reciprocating Engines, Except Aircraft; and Components	$6,032,042	Shapes Group Ltd Co.

How this ranking works

Source: every contract action FPDS records (as published on SAM.gov) in the period, as GovTribe received it.
Amounts are net obligations: what was obligated, less what was deobligated. Shares are of $7.35 billion obligated before deobligations, so they never pass 100%.
Parent companies: each action counts under the ultimate parent its award record names, or under the awardee when it names none, so no dollar counts twice. Parents of the same name (Inc., LLC and the like aside) count as one company, since FPDS records a company's parent under more than one UEI over time. GovTribe corrects a few parents and names by hand; see the corrections.
Fiscal year 2021 ran Oct 1, 2020 – Sep 30, 2021. The Department of Defense reports its contract actions to FPDS about 90 days late, so a fiscal year is ranked once they're in, in February, and the list doesn't change after.
Rank changes compare with FY2020. "New" marks a company outside that period's top 500, and "Returned" one of those that was on an earlier fiscal year's list.
Rank lines show each company's rank on every fiscal year's list since FY2021, #1 at the top, on a scale that gives the top of the list more room. A dashed stretch spans years it wasn't on the list. The step from FY2020 takes the color of the rank change beside it.
Placeholder recipients FPDS uses when it names no company ("Miscellaneous Foreign Contractors" and the like) aren't ranked.

Quick answers

Who were the top 10 PSC 28 contractors in FY2021?

1. RTX Corporation ($2.46B), 2. General Electric Company ($1.99B), 3. Rolls-Royce Military Aero Engines Ltd ($780M), 4. Honeywell International Inc. ($427M), 5. CFM International Inc. ($287M), 6. Rolls-Royce Corporation ($79.2M), 7. Standardaero Aviation Holdings, Inc. ($60.2M), 8. Oshkosh Corp ($54.2M), 9. Thomas Scientific LLC ($47.3M), 10. Cummins Inc. ($43.2M).

On GovTribe

Research every contractor on this list

Every contract, task order and IDV they hold
Their subsidiaries, teammates and competitors
Open opportunities they're positioned for
Alerts when they win new work

Try for free Login