The last dimmer power supply your aircraft will ever need.
The P176 Dimmer Power Supply is a direct replacement for the AS350 OEM Dimmer Power Supply including P/N 704A46814049 and earlier installed equipment. The P176 is the exact same footprint as the OEM unit, is plug compatible, and does not require any wiring changes or modifications for installation. In addition, because no spacers are required to mount the unit, installation is fast and painless for mechanics.
The P176 Dimmer Power Supply is also short circuit and thermally protected, eliminating costly repairs caused by electrical shorts. In the event of a short circuit, the Dimmer Power Supply will shut down as a precautionary measure and resume normal operation when the short is removed. There are no fuses to replace in the unit, as it is self-resetting.
- Direct replacement for OEM P/N 704A46814049
- Short-circuit and thermal protected
- Gold-plated contacts for the vertical header and edge connector
- Conformal coated to prevent corrosion of the PCB
- Linear design generates no radiated electromagnetic interference
P176 Documents
| ID | Title | Content | Image | Date | Categories | Link |
|---|---|---|---|---|---|---|
| 8645 | AA21-401 Installation and Operation Manual Supplement |  | 2025/05/16 | Loudspeaker Controller Supplement | Download | |
| 8647 | AA21-403 Installation and Operation Manual Supplement |  | 2025/05/16 | Loudspeaker Controller Supplement | Download | |
| 8267 | AA21-405 Installation and Operation Manual Supplement |  | 2025/05/06 | Loudspeaker Controller Supplement | Download | |
| 8505 | AA21-406 Installation and Operation Manual Supplement |  | 2025/05/15 | Loudspeaker Controller Supplement | Download | |
| 8511 | AA21-407 Installation and Operation Manual Supplement |  | 2025/05/15 | Loudspeaker Controller Supplement | Download | |
| 8512 | AA21-408 Installation and Operation Manual Supplement |  | 2025/05/15 | Loudspeaker Controller Supplement | Download | |
| 8513 | AA21-450 Installation and Operation Manual Supplement |  | 2025/05/15 | Loudspeaker Controller Supplement | Download | |
| 8514 | AA21-4xx Installation and Operation Manual |  | 2025/05/15 | Loudspeaker Controller Supplement | Download | |
| 8515 | AA22 Installation and Operation Manual |  | 2025/05/15 | Loudspeaker Controllers | Download | |
| 8516 | AEM Notice Of Ownership Change |  | 2025/05/15 | Avionics Consoles | Download | |
| 13666 | AEM Self Evaluation |  | 2025/05/28 | Certifications | Download | |
| 8517 | AWG08 Installation and Operation Manual |  | 2025/05/15 | Audio Warning Generators | Download | |
| 8518 | BAA01 Installation and Operation Manual |  | 2025/05/15 | Specialty Audio | Download | |
| 13671 | Controlled Goods Certificate of Registration |  | 2025/05/28 | Certifications | Download | |
| 8519 | EMI Test Procedure (GA1-2TP) |  | 2025/05/15 | Digital Audio Systems | Download | |
| 8878 | EMI Test Procedure (GA1-2TP) |  | 2025/05/23 | Accessories | Download | |
| 8520 | G13000R Installation and Operation Manual Supplement |  | 2025/05/15 | Digital Audio Systems | Download | |
| 8521 | G13116R Installation and Operation Manual Supplement |  | 2025/05/15 | Digital Audio Systems | Download | |
| 8522 | G13116RNS Installation and Operation Manual Supplement |  | 2025/05/15 | Digital Audio Systems | Download | |
| 13669 | ISO 9001:2015 and AS9100D Certificate |  | 2025/05/28 | Certifications | Download | |
| 13674 | JCAB Maintenance Approval Certificate |  | 2025/05/28 | Certifications | Download | |
| 13675 | JOSCAR Registered Supplier |  | 2025/05/28 | Certifications | Download | |
| 8523 | LS Installation and Operation Manual |  | 2025/05/15 | Loudspeakers | Download | |
| 8524 | LS Service Bulletin – Bell Stop Drill Procedure |  | 2025/05/15 | Loudspeakers | Download | |
| 8526 | LS Service Bulletin – Re-entrant tip securing (MOD 2) |  | 2025/05/15 | Loudspeakers | Download | |
| 8527 | LS Service Bulletin – Re-entrant tip securing (MOD 4) |  | 2025/05/15 | Loudspeakers | Download | |
| 8528 | LS Service Bulletin – Re-entrant tip securing inspection (Loctite® LRUs only) |  | 2025/05/15 | Loudspeakers | Download | |
| 8529 | LS Service Bulletin – Re-entrant tip securing inspection (Loctite® LRUs, MOD 3) |  | 2025/05/15 | Loudspeakers | Download | |
| 8530 | LS150 Installation and Operation Manual |  | 2025/05/15 | Loudspeakers | Download | |
| 8531 | LS300 Installation and Operation Manual |  | 2025/05/15 | Loudspeakers | Download | |
| 8533 | LS600 Installation and Operation Manual |  | 2025/05/15 | Loudspeakers | Download | |
| 8534 | LS800 Installation and Operation Manual |  | 2025/05/15 | Loudspeakers | Download | |
| 8535 | LSA100 Installation and Operation Manual |  | 2025/05/15 | Cabin PA Amplifiers | Download | |
| 8536 | LSA150-001 Installation and Operation Manual Supplement |  | 2025/05/15 | Loudspeaker Amplifier Supplement | Download | |
| 8537 | LSA300-001 Installation and Operation Manual Supplement |  | 2025/05/15 | Loudspeaker Amplifier Supplement | Download | |
| 8539 | LSA400 Installation and Operation Manual |  | 2025/05/15 | Loudspeaker Amplifier Supplement | Download | |
| 8541 | LSA800 Installation and Operation Manual |  | 2025/05/15 | Loudspeaker Amplifier Supplement | Download | |
| 8543 | LSA800-002 Installation and Operation Manual Supplement |  | 2025/05/15 | Loudspeaker Amplifier Supplement | Download | |
| 8544 | LSC-APS Software Installation and Operation Procedure |  | 2025/05/15 | Loudspeaker Controllers | Download | |
| 8546 | LSC22 Installation and Operation Manual |  | 2025/05/15 | Loudspeaker Controllers | Download | |
| 8549 | LSC22-002N Installation and Operation Manual Supplement |  | 2025/05/15 | Loudspeaker Controller Supplement | Download | |
| 8551 | LSC22-003N Installation and Operation Manual Supplement |  | 2025/05/15 | Loudspeaker Controller Supplement | Download | |
| 8553 | LSC22-103N Installation and Operation Manual Supplement |  | 2025/05/15 | Loudspeaker Controller Supplement | Download | |
| 8554 | LSC22-105N Installation and Operation Manual Supplement |  | 2025/05/15 | Loudspeaker Controller Supplement | Download | |
| 8555 | MCP Application Installation and Operation Manual |  | 2025/05/15 | Master Caution Panels | Download | |
| 8557 | MCP01 Information Bulletin – Custom Legends |  | 2025/05/15 | Master Caution Panels | Download | |
| 8558 | MCP01 Installation and Operation Manual |  | 2025/05/15 | Master Caution Panels | Download | |
| 8560 | MCP01 Service Bulletin – GOV MANUAL Diodes & CPF Voltage Adj. (MOD 4) |  | 2025/05/15 | Master Caution Panels | Download | |
| 8561 | MCP01 Service Bulletin – State recorder firmware update (MOD 3) |  | 2025/05/15 | Master Caution Panels | Download | |
| 8562 | MCP01-120 Installation and Operation Manual Supplement |  | 2025/05/15 | Master Caution Panels | Download | |
| 8564 | MCP01-120N Installation and Operation Manual Supplement |  | 2025/05/15 | Master Caution Panels | Download | |
| 8565 | MCP01-130N Installation and Operation Manual |  | 2025/05/15 | Master Caution Panels | Download | |
| 8567 | MCP02 Installation and Operation Manual |  | 2025/05/15 | Master Caution Panels | Download | |
| 8569 | MCP03 Installation and Operation Manual |  | 2025/05/15 | Master Caution Panels | Download | |
| 8571 | MCP03 Installation and Operation Manual | | 2025/05/15 | Master Caution Panels | Download | |
| 8572 | MTP136D AS350 Flight Manual Supplement (AEM001-818-0100) |  | 2025/05/15 | Radios | Download | |
| 8573 | MTP136D AS350 ICA (AEM001-639-0100) |  | 2025/05/15 | Radios | Download | |
| 8574 | MTP136D AS350 Interconnect (AEM001-403-0100) |  | 2025/05/15 | Radios | Download | |
| 8575 | MTP136D AS350 Mechanical Installation (AEM001-952-0100) |  | 2025/05/15 | Radios | Download | |
| 8576 | MTP136D AS350 Modification Order (AEM001-658-0100) |  | 2025/05/15 | Radios | Download | |
| 8577 | MTP136D Service Bulletin – Optional: FW 1.02 Installation |  | 2025/05/15 | Radios | Download | |
| 8844 | MTP136D Service Bulletin – Optional: Hot Temperature Startup Fault MOD 2 |  | 2025/05/23 | Radios | Download | |
| 8847 | MTP136D-000GN Installation Approval Test Procedure |  | 2025/05/23 | Radios | Download | |
| 8850 | MTP136D-000GN Installation Manual |  | 2025/05/23 | Radios | Download | |
| 8874 | MTP136D-000GN Operators Guide FW 1.01 |  | 2025/05/23 | Radios | Download | |
| 8578 | MTP136D-000GN Operators Guide FW 1.02 |  | 2025/05/15 | Radios | Download | |
| 8579 | MTR138-000GNW Installation and Operation Manual |  | 2025/05/15 | Radios | Download | |
| 8580 | MTR138-000GNW Service Bulletin – Optional MOD 1 Rev 1.20 Firmware |  | 2025/05/15 | Radios | Download | |
| 8583 | P122 & P132 ICA (ICA107-2) |  | 2025/05/16 | Avionics Consoles | Download | |
| 8584 | P122 & P132 Installation Manual (GA107-1) |  | 2025/05/16 | Avionics Consoles | Download | |
| 8585 | P122 & P132 RFMS, Post-Mod 350A07-074280 (GA107-13) |  | 2025/05/16 | Avionics Consoles | Download | |
| 8586 | P122 & P132 Wiring Diagrams (G12132) |  | 2025/05/16 | Avionics Consoles | Download | |
| 8587 | P122 Installation Manual, Post-Mod 350A07-074280 (G13122) |  | 2025/05/16 | Avionics Consoles | Download | |
| 8588 | P122 Installation Manual, Pre-Mod 350A07-074280 (G12311) |  | 2025/05/16 | Avionics Consoles | Download | |
| 8589 | P122 RFMS, Pre-Mod 350A07-074280 (GA107-2) |  | 2025/05/16 | Avionics Consoles | Download | |
| 8590 | P122 Service Bulletin – Optional: Linear Grommet Inspection & Retrofit |  | 2025/05/16 | Avionics Consoles | Download | |
| 8591 | P132 Cover Installation (G13138) |  | 2025/05/16 | Avionics Consoles | Download | |
| 8592 | P132 Information Letter – Cyclic Stick (107-19-002) |  | 2025/05/16 | Avionics Consoles | Download | |
| 8593 | P132 Installation Manual, Post-Mod 350A07-074280 (G13132) |  | 2025/05/16 | Avionics Consoles | Download | |
| 8594 | P132 Installation Manual, Pre-Mod 350A07-074280 (GA107-6) |  | 2025/05/16 | Avionics Consoles | Download | |
| 8595 | P132 RFMS, Pre-Mod 350A07-074280 (GA107-2-P132) |  | 2025/05/16 | Avionics Consoles | Download | |
| 8596 | P132 Service Bulletin – Cyclic Stick (GA107-7) |  | 2025/05/16 | Avionics Consoles | Download | |
| 8597 | P139-HD ICA (ICA182-2) |  | 2025/05/16 | Avionics Consoles | Download | |
| 8598 | P139-HD ICA (ICA182-3) |  | 2025/05/16 | Digital Audio Systems | Download | |
| 8599 | P139-HD ICA (ICA182-5) |  | 2025/05/16 | Digital Audio Systems | Download | |
| 8602 | P139-HD ICA (ICA212-1) |  | 2025/05/16 | Digital Audio Systems | Download | |
| 8603 | P139-HD ICA (ICA212-3) |  | 2025/05/16 | Digital Audio Systems | Download | |
| 8604 | P139-HD Installation Manual (GA182-11) |  | 2025/05/16 | Digital Audio Systems | Download | |
| 8605 | P139-HD Installation Manual (GA182-7) |  | 2025/05/16 | Digital Audio Systems | Download | |
| 8606 | P139-HD Installation Manual (GA182-8) |  | 2025/05/16 | Digital Audio Systems | Download | |
| 8607 | P139-HD Installation Manual (GA212-3) |  | 2025/05/16 | Digital Audio Systems | Download | |
| 8608 | P139-HD Installation Manual (GA212-4) |  | 2025/05/16 | Digital Audio Systems | Download | |
| 8609 | P139-HD Operators Guide (Formerly GA063-3) |  | 2025/05/16 | Digital Audio Systems | Download | |
| 8610 | P139-HD RFMS – Japanese (412EP) |  | 2025/05/16 | Digital Audio Systems | Download | |
| 8611 | P139-HD RFMS (GA182-12) |  | 2025/05/16 | Digital Audio Systems | Download | |
| 8612 | P139-HD RFMS (GA182-3) |  | 2025/05/16 | Digital Audio Systems | Download | |
| 8613 | P139-HD RFMS (GA182-6) |  | 2025/05/16 | Digital Audio Systems | Download | |
| 8840 | P139-HD RFMS (GA212-1) |  | 2025/05/23 | Digital Audio Systems | Download | |
| 8614 | P139-HD RFMS (GA212-2) |  | 2025/05/16 | Digital Audio Systems | Download | |
| 8615 | P139-HD Troubleshooting Guide (GA212-01) |  | 2025/05/16 | Digital Audio Systems | Download | |
| 8616 | P139-HD Wiring Diagram, 1 & 2 Board Routers (G13004) |  | 2025/05/16 | Digital Audio Systems | Download | |
| 8617 | P139-HD Wiring Diagram, 3 Board Router (G13162) |  | 2025/05/16 | Digital Audio Systems | Download | |
| 8618 | P174 ICA (ICA203-1) |  | 2025/05/16 | Digital Audio Systems | Download | |
| 8619 | P174 ICA (ICA203-2) |  | 2025/05/16 | Digital Audio Systems | Download | |
| 8620 | P174 ICA (ICA203-3) |  | 2025/05/16 | Digital Audio Systems | Download | |
| 8621 | P174 ICA (ICA203-4) |  | 2025/05/16 | Digital Audio Systems | Download | |
| 8622 | P174 ICA (ICA204-1) |  | 2025/05/16 | Digital Audio Systems | Download | |
| 8880 | P174 ICA (ICA204-1) |  | 2025/05/23 | Accessories | Download | |
| 8623 | P174 ICA (ICA204-2) |  | 2025/05/16 | Digital Audio Systems | Download | |
| 8877 | P174 Installation Manual (GA203-1) | 2025/05/23 | Accessories | |||
| 8624 | P174 Installation Manual (GA203-1) |  | 2025/05/16 | Digital Audio Systems | Download | |
| 8625 | P176 ICA (ICA107-5) |  | 2025/05/16 | Digital Audio Systems | Download | |
| 8626 | P176 Installation Instructions (GA107-12) |  | 2025/05/16 | Accessories | Download | |
| 8627 | P178 EMI Test Procedure (7001-TP-001) |  | 2025/05/16 | Failsafe Audio Mixer | Download | |
| 8628 | P178 EMI Test Procedure (7002-TP-001) |  | 2025/05/16 | Failsafe Audio Mixer | Download | |
| 8629 | P178 ICA (7001-IC-001) |  | 2025/05/16 | Failsafe Audio Mixer | Download | |
| 8630 | P178 ICA (7001-IC-002) |  | 2025/05/16 | Failsafe Audio Mixer | Download | |
| 8631 | P178 ICA (7001-IC-003) |  | 2025/05/16 | Failsafe Audio Mixer | Download | |
| 8632 | P178 ICA (7002-IC-001) |  | 2025/05/16 | Failsafe Audio Mixer | Download | |
| 8633 | P178 ICA (7002-IC-002) |  | 2025/05/16 | Failsafe Audio Mixer | Download | |
| 8634 | P178 Installation Instructions (G13121) |  | 2025/05/16 | Failsafe Audio Mixer | Download | |
| 8635 | P178 Modification Instructions (7001-MI-001) |  | 2025/05/16 | Failsafe Audio Mixer | Download | |
| 8636 | P178 Modification Instructions (7002-MI-001) |  | 2025/05/16 | Failsafe Audio Mixer | Download | |
| 8637 | RTS01 Installation and Operation Manual |  | 2025/05/16 | Remote Transmit Selectors | Download | |
| 13673 | Transport Canada Maintenance Approval Certificate (AMO 91-09) |  | 2025/05/28 | Certifications | Download | |
| 13672 | Transport Canada Manufacturing Approval Certificate (AO 91-09) | | 2025/05/28 | Certifications | Download | |
| 8638 | TS100/TS200 Installation and Operation Manual |  | 2025/05/16 | Loudspeakers | Download | |
| 8640 | TS150/TS300 Installation and Operation Manual |  | 2025/05/16 | Loudspeakers | Download | |
| 8641 | TS92/TS93/TS94 Installation and Operation Manual |  | 2025/05/16 | Loudspeakers | Download | |
| 8643 | VR33 Installation and Operation Manual |  | 2025/05/16 | DC Power Converters | Download |
| P176 Mechanical Specs | ||
|---|---|---|
| Height | 2.42″ [61.47 mm] | |
| Width | 5.7″ [144.79 mm] | |
| Length | 5.85″ [148.59 mm] | |
| Weight | 1.5 lbs [0.68 kg] | |
| P176 Certifications | |
|---|---|
| FAA/PMA STC SH4747NM | AS350 B, BA, B1, B2, B3, C, D, D1 |
| Brazil CHST 2007S06-09 | AS350 B, BA, B1, B2, B3, C, D, D1 |
| Canada STC SH93-83 | AS350 B, BA, B1, B2, B3, C, D, D1 |
| EASA.IM.R.01343 | AS350 B, BA, B1, B2, B3, C, D, D1 |