The H9930 ground support headset offer maximum performance and reliability. It is designed with comfort in mind with features such as a super-soft head pad, adjustable headband, and comfortable gel ear seals. Adjustable hybrid wire-flex boom assembly, M-87 microphone, and a 23 dB passive noise reduction contribute to excellent voice communications.
This ground support headset (Alternate Part# H9930) features M-87 dynamic microphone, wire-flex mic boom, dual volume control, 6-foot extended coiled cord with military grade 7-pin belt station connector.
- Rugged & durable construction using marine grade stainless steel
- Dynamic earphones with stainless steel retainers
- Hybrid wire-flex boom assembly
- Dual volume control conveniently located on ear domes
- Undercut, comfort gel ear seals
- 4-chamber, air-flow pillow headpad
- Certified 23 dB passive NNR
Product Codes | |
|---|---|
| Mfr Part No: | 40990G-01 |
Weight: 14.2 oz (403 g)Communication Cord: 6 ft coiled cord with MAP-57 connectorCertified NNR 23 dBDome Material: lightweight ABSPotentiometer: 220Ω ±20% (2 each)Speaker Sensitivity: 100 dB SPL/1mW @ 1kHzSpeaker Frequency Response: 20 Hz — 20,000 HzMicrophone Impedance: 150Ω ±15ΩMicrophone Sensitivity: 49.77 dBuV to 55.79 dBuV @ 1kHz, 103 dB SPL @ 0.187inMicrophone Frequency Response: 200 Hz — 6 kHzMicrophone Total Harmonic Distortion: 200 Hz to 6 kHz, 5% @ 105dB above 20 uPaMicrophone Resistive Load: 150Ω ±15Ω
- Stock: Out of Stock
- Manufacturer Part #: 40990G-01
Aircraft Fitment Finder
Returns & refund summary
- 30-day return window — with prior return authorization, unopened in original packaging.
- Restocking fee: 20% on unopened items, 30% on open-box items.
- Refund processing fee: 5.51% applies only to customer-remorse returns and customer-initiated cancellations. If a problem is our fault (our cancellation, unavailability, wrong item, confirmed defect, or shipping damage) your refund is 100% with no fees.
- Return shipping: paid by buyer on customer-remorse returns; we pay return shipping when the problem is our fault.
- Non-returnable categories: installed/used parts, special-order or rebuilt items, programmed items (incl. ELTs), batteries, AOG-priority orders, international orders.
Full terms: Return Policy.
Authenticity & authorization
We source products from manufacturers, authorized distributors, and established aviation suppliers as applicable. We are an independent reseller; we do not claim direct dealer or authorized-representative status for any brand. Documentation, source, and warranty eligibility vary by product and are confirmed on request.
See our full Manufacturer Authorizations page for the current per-brand status.
Need traceability paperwork?
If your installation requires FAA Form 8130-3, manufacturer Certificate of Conformance, or other traceability documentation, please call 1-877-722-8727 or email [email protected] before placing the order so we can confirm what is available for this part.
Shipping
Standard ground, expedited, and AOG shipping options are available at checkout. Full shipping-cost tiers and timelines are published on our Delivery Information page.
