MD80 series Radio Altimeter sound

A unique sound that some aircraft from the MD80 series would make when passing through the decision height set by the pilot (I think). (from the Maddog MD80) If anyone else happens to have any other rare recordings of sounds that aircraft systems make (current and past) or knows where to buy master recordings for them, please share them or where to buy them from if they cost money

• #تحصیلات_و_یادگیری
• #md80
• #md81
• #md82
• #md88
• #caws