If you’re in search for quality aviation parts such as Data Modem Subassem, Aerospace Unlimited is your-one-stop shop. 550-8964-004, 550-9004-004 are just a few of the Data Modem Subassem parts that we have inventoried. In fact, we have over 6 billion new, old and obsolete parts in our procurement list. Our customers know that they can trust us because of our policy to source exclusively from certified manufacturers like Rockwell Collins Aerospace. We pride ourselves in being the only independent parts distributor with a No China Sourcing pledge. If you submit an Instant RFQ for your desired Data Modem Subassem parts, we can provide you with a quote in as little as 15 minutes.