{"product_id":"7-fms-441","title":"Winter Instruments 7 FMS 441","description":"\u003cp\u003eWinter 7 FMS 441, item 7441, is a pitot airspeed indicator for gliders, motor gliders and microlights with a 0–350 km\/h range in a 57 mm case. The 510° spiral scale has non-linear graduation that spreads out the low and medium speeds.\u003c\/p\u003e\u003cp\u003eAn open diaphragm capsule measures the difference between pitot (total) pressure and static pressure; a lever and gear mechanism drives the pointer. Zero is at the bottom as standard. Winter states an indication error of ±2 km\/h up to 100 km\/h and ±3 km\/h above at room temperature, and a maximum operating altitude of 12,000 m. The 360° linear-scale version is the 7 FMS 521 (7521).\u003c\/p\u003e\u003cp\u003eThe indicator fits a 57 mm panel hole with a 67 mm hole circle for M4 screws and needs 57 mm depth behind the panel. A leak test is required before first use; Winter specifies a leak test at least every 2 years and recommends retesting after 5 years. Winter supplies the new 7 FMS 441 with an EASA Form 1 and the installation and maintenance instructions. Item 7441 is the dial without colour markings; for a marked dial the part number comes from the aircraft manufacturer’s documentation or from Winter. Fit depends on the aircraft type and any required colour markings.\u003c\/p\u003e","brand":"Winter","offers":[{"title":"Default Title","offer_id":58183760904523,"sku":"7441","price":12880.8,"currency_code":"CZK","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1055\/1063\/3803\/files\/169-7441.jpg?v=1791814699","url":"https:\/\/shop.airteam.eu\/products\/7-fms-441","provider":"AIR TEAM","version":"1.0","type":"link"}