Part Number: 128-380023-3 (Standby airspeed indicator)Part Number: 390-382039-0005E (Standby airspeed indicator)Part Number: 64040-800-1 (Standby airspeed indicator)Part Number: WL246ASMS7 (Standby airspeed indicator)Part Number: WL271AS2 (Standby airspeed indicator)Part Number: WL271AS5 (Standby airspeed indicator)