S-1A — Interstate S-1A

85 yearsmedian age

Of the 57 registered Interstate S-1A with a known build year (88% of the 65 we track), the median age is 85 years.

1changed registration in 12 months

1 of the 65 registered Interstate S-1A we track changed registration in the last 12 months (2% of the fleet), across 1 registration event. Registration changes include ownership transfers, re-registrations and address updates — not all are sales.