The AT-640A/ARN Antenna is a receive-only VHF Marker Beacon antenna used on both fixed-wing and rotary-wing aircraft. The antenna will meet the requirements of Military Specification MIL-A-5999 for electrical and environmental performance. The antenna is finished with a white Skydrol resistant polyurethane paint in accordance with Military Specification MIL-C-81773. The antenna has an operating temperature of -40 F to 140 F and experiences a drag force of 0.22 lb at airspeeds of 400 mph. Precipitation static is minimized through the use of a foam-filled fiberglass construction. The foam also reduces the effects of vibration, shock and temperature extremes.
Product Codes | |
|---|---|
| Mfr Part No: | AT-640A/ARN |
| MIL SPEC: | MIL-C-81773 |
| MIL SPEC: | MIL-C-81773 |
| NSN: | 5985-00-607-6137 |
| SCHEDULE B CODE: | 8529.10.4000 |
- Stock: Warehouse
- Manufacturer Part #: AT-640A/ARN
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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.
