{"product_id":"6-fms-421","title":"Winter Instruments 6 FMS 421","description":"\u003cp\u003eWinter 6 FMS 421, item 6421, is a pitot airspeed indicator in an 80 mm case with a 0–300 km\/h range on a 510° spiral scale that spreads out the low and medium speeds. Winter developed the 6 FMS 4 series for gliders. The instrument needs 77.5 mm behind the panel and weighs 0.205 kg.\u003c\/p\u003e\u003cp\u003eAn open diaphragm cell measures the difference between total pressure and static pressure, and a linkage and gear train drives the pointer. Indication error at room temperature is ±2 km\/h up to 100 km\/h and ±3 km\/h above. The dial has white markings on matt black, with zero at the 6 o'clock position as standard. The same instrument in mph is item 6422 and in knots item 6423. The 510° scale takes the Winter Großkinsky flap ring (item 6001).\u003c\/p\u003e\u003cp\u003eWinter supplies the new instrument with an EASA Form 1 and installation instructions. It mounts in an 80 mm panel hole with M4 screws on a 89 mm bolt circle. A leak test is required before first use and at least every 2 years. Item 6421 is the version without colour marking; colour-marked versions take the part number from the aircraft manufacturer's documents or Winter. Fit depends on the aircraft type and the required colour marking.\u003c\/p\u003e","brand":"Winter","offers":[{"title":"Default Title","offer_id":58183490765131,"sku":"6421","price":12880.8,"currency_code":"CZK","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1055\/1063\/3803\/files\/6421.jpg?v=1790588235","url":"https:\/\/shop.airteam.eu\/products\/6-fms-421","provider":"AIR TEAM","version":"1.0","type":"link"}