| BYLB-50568-1 | Valve Assembly, Dual | GE Aviation Systems LLC (formerly Smiths and Barbar Coleman) | — | 21 | Environmental / Cabin | PMA |
| BYLB-50568-2 | Valve Assembly, Dual Mix Cabin Air Supply | GE Aviation Systems LLC (formerly Smiths and Barbar Coleman) | — | 21 | Environmental / Cabin | PMA |
| BYLB-50569-2 | Valve Assembly, Dual Mix Cabin Air Supply | GE Aviation Systems LLC (formerly Smiths and Barbar Coleman) | — | 21 | Environmental / Cabin | PMA |
| BYLB-50569-3 | Valve Assembly, Dual Mix Cabin Air Supply | GE Aviation Systems LLC (formerly Smiths and Barbar Coleman) | — | 21 | Environmental / Cabin | PMA |
| BYLB-50633-1 | Valve Assembly and Cabin Exhaust | GE Aviation Systems LLC (formerly Smiths and Barbar Coleman) | — | 78 | Engine Accessories | PMA |
| BYLB-50662-1 | Valve Assembly, Heater Isolation | GE Aviation Systems LLC (formerly Smiths and Barbar Coleman) | — | 21 | Environmental / Cabin | PMA |
| BYLB-50665-1 | Valve Assembly, Ram Air Scoop | GE Aviation Systems LLC (formerly Smiths and Barbar Coleman) | — | 21 | Environmental / Cabin | PMA |
| BYLB-50710 | BUTTERFLY VALVE | GE Aviation Systems LLC (formerly Smiths and Barbar Coleman) | — | 21 | Environmental / Cabin | PMA |
| BYLB-50710-1 | VALVE ASSEM | GE Aviation Systems LLC (formerly Smiths and Barbar Coleman) | — | 20 | Consumables / Hardware | PMA |
| BYLB-50711 | BUTTERFLY VALVE | GE Aviation Systems LLC (formerly Smiths and Barbar Coleman) | — | 20 | Consumables / Hardware | PMA |
| BYLB-50711-1 | 1.50 DIA ALUMINUM BUTTERFLY AND ACTUATOR ASSEMBLY | GE Aviation Systems LLC (formerly Smiths and Barbar Coleman) | — | 21 | Environmental / Cabin | PMA |
| BYLB-50716 | 2.00 DIA STAINLESS STEEL BUTTERFLY VALVE & ACTUATOR ASS'Y | GE Aviation Systems LLC (formerly Smiths and Barbar Coleman) | — | 21 | Environmental / Cabin | PMA |
| BYLB-50907 | Aluminum Valve & Actuator Assembly 1.5 Diameter | GE Aviation Systems LLC (formerly Smiths and Barbar Coleman) | — | 21 | Electromechanical | PMA |
| BYLB-50978 | 3" Diameter Valve, Buterfly Shut Off | GE Aviation Systems LLC (formerly Smiths and Barbar Coleman) | | 21 | Environmental / Cabin | PMA |
| BYLB-51003 | DASAULT BFLY VALVE | GE Aviation Systems LLC (formerly Smiths and Barbar Coleman) | — | 21 | Environmental / Cabin | PMA |
| BYLB-51003 Dwg. BYLB-51003 Rev. E, dtd 10/30/85 | Valve Actuator | GE Aviation Systems LLC (formerly Smiths and Barbar Coleman) | — | 27 | Electromechanical | PMA |
| BYLB-51034-001 | BUTTERFLY VALVE AND ACTUATOR ASSEMBLY | GE Aviation Systems LLC (formerly Smiths and Barbar Coleman) | — | 21 | Environmental / Cabin | PMA |
| BYLB-51034-002 | BUTTERFLY VALVE AND ACTUATOR ASSEMBLY | GE Aviation Systems LLC (formerly Smiths and Barbar Coleman) | — | 20 | Electromechanical | PMA |
| BYLB-51034-002 Dwg. BYLB-51034-002 Rev. E, dtd 3/5/87 | Valve Actuator | GE Aviation Systems LLC (formerly Smiths and Barbar Coleman) | — | 27 | Electromechanical | PMA |
| BYLB-51034-003 | DASSAULT DUAL VALVE | GE Aviation Systems LLC (formerly Smiths and Barbar Coleman) | | 21 | Environmental / Cabin | PMA |
| BYLB-51034-2 | Valve and Actuator Assembly | GE Aviation Systems LLC (formerly Smiths and Barbar Coleman) | — | 21 | Electromechanical | PMA |
| BYLB-51035-1 Dwg. BYLB-51035-1 Rev. B, dtd 3/10/86 | Valve Actuator | GE Aviation Systems LLC (formerly Smiths and Barbar Coleman) | — | 27 | Electromechanical | PMA |
| BYLB-51226 | OBSOLETE PART (SERVICE) | GE Aviation Systems LLC (formerly Smiths and Barbar Coleman) | — | 21 | Environmental / Cabin | PMA |
| BYLB-51226-001 | VALVE AND ACTUATOR ASSEMBLY | GE Aviation Systems LLC (formerly Smiths and Barbar Coleman) | — | 21 | Environmental / Cabin | PMA |
| BYLB-51226-001 Dwg. BYLB-51226-001 Rev. D, dtd 3/5/87 | Valve Actuator | GE Aviation Systems LLC (formerly Smiths and Barbar Coleman) | — | 27 | Electromechanical | PMA |
| BYLB-51226-002 | DASSAULT DUAL VALVE | GE Aviation Systems LLC (formerly Smiths and Barbar Coleman) | | 21 | Environmental / Cabin | PMA |
| BYLB-51226-1 | 1.5" and 2" Diameter Aluminum Butterfly Valve and Actuator Assembly | GE Aviation Systems LLC (formerly Smiths and Barbar Coleman) | — | 21 | Electromechanical | PMA |
| BYLB-51860 | 4.5" Diameter Air Diverter Valve | GE Aviation Systems LLC (formerly Smiths and Barbar Coleman) | | 21 | Environmental / Cabin | PMA |
| BYLB-51908 | VALVE ASSEMBLY | GE Aviation Systems LLC (formerly Smiths and Barbar Coleman) | | 20 | Hydraulics | PMA |
| BYLB-51971 | 3.0 DIA. ALUMINUM BUTTERFLY VAVLE AND ACTUATOR ASSEMBLY (Shutoff Valve) | GE Aviation Systems LLC (formerly Smiths and Barbar Coleman) | | 20 | Electromechanical | PMA |
| BYLB-52023 | VALVE ASSY | GE Aviation Systems LLC (formerly Smiths and Barbar Coleman) | | 20 | Consumables / Hardware | PMA |
| BYLB-52188 | 3.0 AL BTFL & ACTR | GE Aviation Systems LLC (formerly Smiths and Barbar Coleman) | | 21 | Environmental / Cabin | PMA |
| BYLB-52188-3 | 3.0 AL BFLY VLV AND ACTR | GE Aviation Systems LLC (formerly Smiths and Barbar Coleman) | | 21 | Environmental / Cabin | PMA |
| BYLB-52188-5 | Assembly, 3.00 Valve & Actuator | GE Aviation Systems LLC (formerly Smiths and Barbar Coleman) | | 21 | Environmental / Cabin | PMA |
| BYLB-52188-6 | Assembly, 3.00 Valve & Actuator | GE Aviation Systems LLC (formerly Smiths and Barbar Coleman) | | 21 | Environmental / Cabin | PMA |
| BYLB-52232 | 1.5 AL BTFL & ACTR | GE Aviation Systems LLC (formerly Smiths and Barbar Coleman) | | 21 | Environmental / Cabin | PMA |
| BYLB-52584 | DASSAULT DUAL VALVE | GE Aviation Systems LLC (formerly Smiths and Barbar Coleman) | | 20 | Consumables / Hardware | PMA |
| BYLB-52585 | DASSAULT DUAL VALVE | GE Aviation Systems LLC (formerly Smiths and Barbar Coleman) | | 20 | Consumables / Hardware | PMA |
| BYLB-52642 | VALVE ACT ASSY | GE Aviation Systems LLC (formerly Smiths and Barbar Coleman) | | 21 | Environmental / Cabin | PMA |
| BYLB-52643 | VALVE ACT ASSY | GE Aviation Systems LLC (formerly Smiths and Barbar Coleman) | — | 21 | Environmental / Cabin | PMA |
| BYLB-7106-2 | 2.00" Dia. Butterfly Valve and Actuator Assembly | GE Aviation Systems LLC (formerly Smiths and Barbar Coleman) | — | 21 | Environmental / Cabin | PMA |
| BYLB-7106-3 | Butterfly Valve and Actuator Assembly | GE Aviation Systems LLC (formerly Smiths and Barbar Coleman) | — | 21 | Environmental / Cabin | PMA |
| BYLB-7109 | 2.00" Valve and Actuator Assembly | GE Aviation Systems LLC (formerly Smiths and Barbar Coleman) | — | 21 | Environmental / Cabin | PMA |
| BYLB-7109-1 | Butterfly Valve and Actuator Assembly | GE Aviation Systems LLC (formerly Smiths and Barbar Coleman) | — | 21 | Environmental / Cabin | PMA |
| BYLB-7110 | Butterfly Valve and Actuator Assembly | GE Aviation Systems LLC (formerly Smiths and Barbar Coleman) | — | 21 | Environmental / Cabin | PMA |
| BYLB-7194 | 5.00" Diameter Butterfly Valve and Actuator | GE Aviation Systems LLC (formerly Smiths and Barbar Coleman) | — | 21 | Environmental / Cabin | PMA |
| BYLB-8453 | 2" Diameter Stainless Steel Butterfly Valve and Actuator Assembly | GE Aviation Systems LLC (formerly Smiths and Barbar Coleman) | — | 21 | Environmental / Cabin | PMA |
| BYLB-9959 | 1.5" Diameter Stainless Steel Butterfly Valve | GE Aviation Systems LLC (formerly Smiths and Barbar Coleman) | — | 21 | Environmental / Cabin | PMA |
| BYLC 2262 | Electro-Mechanical Actuator | GE Aviation Systems LLC (formerly Smiths and Barbar Coleman) | — | 21 | Electromechanical | PMA |
| BYLC-2244 | Actuator, Electro-Mechanical Rotary Travel Limit | GE Aviation Systems LLC (formerly Smiths and Barbar Coleman) | — | 21 | Environmental / Cabin | PMA |