David Clark C-17 Headset 40493G-01
Condition NE — Condition disclosed — is shown up front on this listing, along with the exact price, current availability, and what certification paperwork ships with the part, so you can confirm fit and airworthiness before you buy. Full specifications and answers to common questions are below.
What does “New” condition mean?
Request certification documents (8130-3 / EASA Form 1 / C of C)
Description
The C-17 Dual Ear Headset is designed for rugged reliability on transport operations in C-17 aircraft.
- Passive noise attenuating
- Single volume control
- Flex boom
- Super-soft, Double-foam
- Certified Noise Reduction Rating (NRR): 23 dB
Product Codes | |
|---|---|
| Mfr Part No: | 40493G-01 |
| NSN: | 5965-01-424-3297 |
Weight: 16.5 oz NRR: 23dB Earphone type: Dynamic noise-cancelling Mic: M-7A amplified electret Earphone impedance: 600 ohms (1200 Ohms each; wired in parallel) Earphone sensitivity: 90 dB SPL on flat plate coupler, re 1mW input @ 1KHz Earphone plug: U-174/U Boom type: Flex Noise-cancelling mic: M-74 dynamic Mic impedance: 50 ohms +/- 20% Mic sensitivity: 400mV RMS +/-dB into 150 ohm load @ 1kHz for 114dB SPL input Mic frequency response: 300Hz – 3.5KHz per RTCA DO 214 Mic plug: U-174/U Cord: 5 ft coil
Specifications
| Part number | 40493G-01 |
|---|---|
| Manufacturer | David Clark |
| Condition | NE |
| Airworthiness | Condition disclosed |
| Country of origin | — |
| Lead time | days |
Frequently asked
Does the David Clark C-17 Headset 40493G-01 include certification paperwork?
This item is supplied as "Condition disclosed" rather than with full 8130-3 traceability — normal for some condition codes, and it does not mean the part is unusable, only that the paperwork profile differs. Check the listing for exactly what documentation is included, and request any available records before you purchase if your installation requires them.
What condition is this part?
This part is listed in condition NE — Condition disclosed. Condition codes describe how a part reached its current state (for example new, overhauled, serviceable, repaired, or as-removed) and directly affect what paperwork ships with it and how it should be installed. See the Glossary for the full definition of every condition code we use.
How fast does it ship?
This item is currently on backorder, meaning demand has temporarily outpaced our stock and a new shipment is inbound from the manufacturer or our supplier. Request a quote and we will confirm the current estimated delivery window before you commit. If your aircraft is grounded, AOG expedited handling is available on request.
Can I return it?
You may return this item within 30 days of delivery if it is unopened, uninstalled, and in its original packaging. Items that have been installed, powered on, opened hazmat, or separated from an attached 8130-3 tag are non-returnable because their airworthiness status can no longer be confirmed once removed from the part. See our Returns policy for the full process.
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