Request For Price Alternate Part NumberPart NameReplaced PNQuanityMaterial Condition 8-556-01 Proximity Sensor McDonnell Douglas 8-056-01 Factory New New Unused Surplus Overhauled Used Any Aircraft Models McDonnell Douglas (DC-9 Models 81, 82, 83, 87, MD-88) Company Name First Name * Last Name * Email * Phone Number * Notes Sales Order T&CPrivacy Policy Send Request Please note that by requesting pricing, you are accepting our Sales Order T&C and Privacy Policy. For more information, please follow the links under the policy menu below.