Atlas/ELOS
FAA · Equivalent Level of Safety
ELOS.
Equivalent Level of Safety findings — FAA determinations that an alternative design / procedure is as safe as the codified requirement. Project-specific. 2,038 indexed.
Recent
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03/23/2026
Read →ODA- GED-P278-25.251(b)
ALOFT AeroArchitects · Airbus SAS A320-111 | A320-211 | A320-212 | A320-214 | A320-216 | A320-231 | A320-232 | A320-233 | A320-251N | A320-252N | A320-253N | A320-271N | A320-272N | A320-273N | A321 Model -131
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03/23/2026
Read →ST20568CH-T-A-25.251
Equivalent Level of Safety (ELOS) Finding Vibration and Buffeting
Avcon Industries Inc. · Bombardier Inc. CL-600-2B16 (604 Variant)
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02/02/2026
Read →AMI-PRG-0410-01-T-25.251
AeroMech Incorporated · Airbus SAS A321-251N | A321-252N | A321-253N | A321-271N | A321-272N | A321-251NX | A321-252NX | A321-253NX | A321-253NY | A321-271NX | A321-271NY | A321-272NX
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01/28/2026
Read →ENV25053-T-25.251
Equivalent Level of Safety (ELOS) Finding for Vibration and Buffeting Requirements
Envoy Aerospace LLC · The Boeing Company 777-300ER Series
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01/28/2026
Read →ADC-0201-25.251
Aerospace Design & Compliance LLC · Learjet Inc. 60
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01/26/2026
Read →ODA-ADC-0206-SE-1
Aerospace Design & Compliance LLC · The Boeing Company 737-900 Series | 737-900ER Series
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01/26/2026
Read →ODA-ADC-0201-SE-1
Aerospace Design & Compliance LLC · Learjet Inc. 60
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01/09/2026
Read →AT20750IB-T-ESF-B25.251-01
Dassault Aviation · Dassault Aviation Falcon 900EX
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12/29/2025
Read →AT11910IB-A-23.1303
Daher/Socata A/S · Daher Aerospace TMB 700
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12/16/2025
Read →ODA-GED-P385-25.251
AeroArchitects · The Boeing Company 737-8
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12/09/2025
Read →ODA-ADC-0214-SE-1
Aerospace Design & Compliance LLC · The Boeing Company DC-9-81 (MD-81) | DC-9-82 (MD-82) | DC-9-83 (MD-83) | DC-9-87 (MD-87) | MD-90-30 | MD-88
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11/26/2025
Read →SA-02-2024-0018-C-2
Gulfstream Aerospace Corporation · Gulfstream Aerospace LP G300
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11/25/2025
Read →AT20368IB-T-SE-101
Equivalent Level of Safety (ELOS) Finding for High Elevation Airport Operations
ATR – GIE Avions de Transport Régional · ATR – GIE Avions de Transport Régional ATR42-200 | ATR42-300 | ATR42-320 | ATR42-500 | ATR72-101 | ATR72-102 | ATR72-201 | ATR72-202 | ATR72-211 | ATR72-212 | ATR72-212A
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11/21/2025
Read →SA00767MC-T-S-1-GV-SP
Gulfstream Aerospace Corporation · Gulfstream Aerospace Corporation GV-SP
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11/21/2025
Read →3S22-021-01-00-SE-2
3S Certification LLC · De Havilland Aircraft of Canada Limited DHC-8-202
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11/06/2025
Read →AT19460IB-R-29.923 & 29.927
Leonardo S.p.A. · Leonardo S.p.A. AW189
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10/23/2025
Read →ST20308IB-T-25.251(b)
Equivalent Level of Safety (ELOS) Finding for Vibration and Buffeting Requirements
PMV Engineering · ATR – GIE Avions de Transport Régional ATR72-212A
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10/23/2025
Read →ST20212IB-T-25.251(b)
Equivalent Level of Safety (ELOS) Finding for Vibration and Buffeting Requirements
Alamo Engineering GmbH · Textron Aviation Inc. 680 | 680A
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09/23/2025
Read →AT20300IB-T-ESF-B25.251-01
Dassault Aviation · Dassault Aviation FALCON 2000EX
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09/17/2025
Read →ST19548IB-R-C-1
M.A.G. Mecaer Aviation Group S.P.A. · Airbus Helicopters H160-B
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09/15/2025
Read →ST19548IB-R-C-2
Equivalent Level of Safety (ELOS) Finding for Ditching Emergency Exits for Passengers
M.A.G. Mecaer Aviation Group S.P.A. · Airbus Helicopters H160-B
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09/10/2025
Read →ODA-GED-P377-25.251
ALOFT AeroArchitects · The Boeing Company 737-700 Series
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09/09/2025
Read →ODA-25-P2007-T-25.251
Peregrine · Learjet Inc. 45
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08/28/2025
Read →ST20186IB-T-25.251
Equivalent Level of Safety (ELOS) Finding for Vibration and Buffeting Requirements
Airhawke Aérospatial Inc. · The Boeing Company 737-700 Series
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08/27/2025
Read →ST11148IB-T-S-5 Regulatory
Israel Aerospace Industries (IAI) · The Boeing Company 777-300ER Series
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08/20/2025
Read →ST11148IB-T-ES-2
Equivalent Level of Safety (ELOS) Finding for Pneumatic Systems – Harmonized 25.1438
Israel Aerospace Industries (IAI) · The Boeing Company 777-300ER Series
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08/20/2025
Read →ST11148IB-T-SE-1
Israel Aerospace Industries (IAI) · The Boeing Company 777-300ER Series
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08/20/2025
Read →ST11148IB-T-ES-1
Israel Aerospace Industries (IAI) · The Boeing Company 777-300ER Series
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08/05/2025
Read →ST11148IB-T-A-4
Israel Aerospace Industries (IAI) · The Boeing Company 777-300ER Series
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08/01/2025
Read →AT19534IB-T-ESF-B25.251-01
Equivalent Level of Safety (ELOS) Finding for Vibration and Buffeting
Dassault Aviation · Dassault Aviation Falcon 7X
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07/31/2025
Read →ST19358IB-T-B-03
Jet Aviation AG · The Boeing Company 737-9
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07/31/2025
Read →ST19358IB-T-PCRI-0000492
Jet Aviation AG · The Boeing Company 737-8
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07/30/2025
Read →ENV25023-T-25.251
Equivalent Level of Safety (ELOS) Finding for Vibration and Buffeting Requirements
Nextant Aerospace · Embraer S.A. 550
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07/29/2025
Read →ST19206IB-T -25.251(b)
EADS Airbus GmbH · Airbus SAS A350-941 | A350-1041
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07/24/2025
Read →ST18939NY-T-25.251
Equivalent Level of Safety (ELOS) Finding for Vibration and Buffeting Requirements
Kilroy Aviation LLC · Bombardier Inc. CL-600-2B16 (604 Variant)
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07/21/2025
Read →ODA-2193-09-25.251
Equivalent Level of Safety (ELOS) Finding for Vibration and Buffeting Requirements
Delta Engineering Corporation · Airbus SAS A330-301 | A330-302 | A330-303 | A330-321 | A330-322 | A330-323 | A330-341 | A330-342 | A330-343
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07/14/2025
Read →PS05-0212-P-4
Equivalent Level of Safety (ELOS) Finding for Warning Means for Engine Fuel Filter Contamination
The Boeing Company · The Boeing Company 747-8 Series | 747-8F Series
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06/23/2025
Read →ENV25006-T-25.251
Equivalent Level of Safety (ELOS) Finding for Vibration and Buffeting Requirements
West Star Aviation LLC · Embraer S.A. EMB-545
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06/18/2025
Read →TC11070IB-T-CRI-F-43
Equivalent Level of Safety (ELOS) Finding for Landing Light Single Switch
Dassault Aviation · Dassault Aviation Falcon 10X
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06/17/2025
Read →AT18777IB-T-25.979-1
Airbus SAS · Airbus SAS A321-253NY
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06/16/2025
Read →PS25-0108-P-26
Boeing Commercial Airplane Group · The Boeing Company 777-200LR Series | 777-300ER Series | 777F Series
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06/06/2025
Read →ENV25021-T-25.251
Equivalent Level of Safety (ELOS) Finding for Vibration and Buffeting Requirements
Nextant Aerospace · Bombardier Inc. BD-700-1A10 | BD-700-1A11
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05/23/2025
Read →ADC-0207-25.251
Aerospace Design & Compliance LLC · Embraer S.A. EMB-145XR
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05/22/2025
Read →ODA-ADC-0202-SE-1
Aerospace Design & Compliance LLC · MHI RJ Aviation ULC CL-600-2C11 (Regional Jet Series 550)
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05/08/2025
Read →ADC-0202-25.251
Aerospace Design & Compliance LLC · MHI RJ Aviation ULC CL-600-2C11 (Regional Jet Series 550)
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05/08/2025
Read →ST18985IB-T-25.251(b)
Sabena Technics GBC · Airbus SAS A318 Model -111 | A318 Model -112 | A319 Model -111 | A319 Model -112 | A319 Model -113 | A319 Model -114 | A319 Model -115 | A319 Model -131 | A319 Model -132 | A319 Model -133
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04/29/2025
Read →PS13-1000-C-9
Inside Passenger Door Operational Arrow Location and Color
The Boeing Company · The Boeing Company 777-8F | 777-9
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04/23/2025
Read →Aerospace Design & Compliance LLC
Aerospace Design & Compliance LLC · Gulfstream Aerospace LP Gulfstream 200 | Galaxy
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04/08/2025
Read →AT10383IB-T-P-1038
Firewall Caps and Seals Fire Withstanding Capability
Airbus SAS · Airbus SAS A350-1000 | A350-941
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03/26/2025
Read →ADC-0193-25.251
Aerospace Design & Compliance LLC · The Boeing Company 777-200LR Series