Sesame Technologies AOAC-5-EX – EX Universal Angle of Attack Cover

The AOAC-5-EX has a flexible design that fits a wide variety of standard AOA vane shapes used on many corporate jets. It uses heavy-duty lever suction cups to secure itself rather than requiring modifications to the fuselage. This universal compatibility simplifies inventory (you don’t need many different covers for different aircraft). It’s especially useful for operators with mixed fleets who want one cover that works across multiple models.

This cover’s rugged EX-grade polymer construction resists UV exposure, moisture, and harsh ramp weather. It also includes a high-temperature inner liner that protects the angle of attack vane from heat, such as from hot ramp pavement or exposure to radiant heat. These protections reduce the risk of vane corrosion or degradation caused by weather or environmental contaminants.

No structural modifications are required. The cover attaches via lever suction cups, so the existing fuselage and vane mounting hardware remain untouched. This makes it easier for maintenance crews to install or remove the cover without needing special tools or structural work.

The AOAC-5-EX helps prevent misalignment or damage by protecting the AOA vane from accidental impact (e.g., bumping tools or hoses). The NAS1756-approved warning streamer reminds crews to remove the cover before flight, helping avoid issues related to leaving covers in place. Also, as the cover resists weather and snagging, the risk of damage from routine ground operations is lower.

The AOAC-5-EX works with many different manufacturers’ AOA vanes, including Rosemount, Conrac, Teledyne, Sextant, Kollsman, Gianni, Ametek, Gates, Safeflight, Topp, and more. That broad fit range makes it useful across various executive aircraft platforms. Always double-check your aircraft’s specific vane model to confirm fit.

The cover is moisture- and UV-resistant, making it suitable for ramp exposure with direct sunlight without quickly deteriorating. Its polymer material is chosen for longevity under harsh lighting and weather conditions. This means less frequent replacement and better protection over time for the AOA vane.

Key safety features include the NAS1756-approved warning streamer with part number identification, which aids visibility and preflight checks. Captive lever suction cups secure the cover and reduce the chance of it being loose. The inner liner prevents metal-to-metal contact, which helps avoid damage to both vane and cover during installation.

The cover is designed to minimize the risk of paint damage. The suction cups are heavy-duty but intended not to require adhesives or screws, reducing the risk of scratching or drilling. The inner surfaces that touch the aircraft are designed to keep paint and finish safe, provided they are clean before application. Regular checks ensure no abrasive debris is trapped beneath.

The cover reduces unforeseen maintenance costs by preventing damage to the AOA vane, which can lead to expensive repairs or replacements. Because it’s universal and durable, operators need fewer different covers and will replace them less often. Also, fewer ground incidents or false sensor issues save time, parts, and labor. Over time, these savings add up.

To keep it working well, the cover should be cleaned periodically to remove grit, oil residues, or contaminants that could affect the suction cups or inner liner. Inspect for any cracks or wear in the polymer or liner, especially after exposure to high heat. Replace or repair streamers, fasteners, or suction cups if they lose shape or holding capacity. Proper storage during non-use also helps preserve the material and finish.

The NAS1756-approved warning streamer is intended to be highly visible, serving as a “Remove Before Flight” reminder. Its visibility reduces the risk of the cover being inadvertently left in place, which could interfere with flight data once airborne. Bright streamers are essential in dim light or busy ramp operations where multiple covers or tags may be in use.

The cover works well in both hangars and outdoor ramp conditions, including moisture, high UV exposure, and variable weather. Challenging environments might include extremely cold conditions or very abrasive conditions (e.g., sand, salt, and dust). In these cases, more frequent inspection and cleaning are required. Also, surfaces should be clean and dry when installing suction cups for the best hold.