Function XPLMFindNavAid 

pub unsafe extern "C-unwind" fn XPLMFindNavAid(
    inNameFragment: *const c_char,
    inIDFragment: *const c_char,
    inLat: *mut f32,
    inLon: *mut f32,
    inFrequency: *mut c_int,
    inType: XPLMNavType,
) -> XPLMNavRef