This is a market research notice to identify potential manufacturers of a specific aircraft landing light part (NSN 6220-01-437-7640, P/N 8555M9). It is not a formal solicitation, and responses are voluntary. Based on the responses, the eventual procurement may be set aside for small businesses or conducted as full and open competition. Responses must be submitted via email by April 27, 2026. No telephone inquiries are accepted, and no feedback will be provided on submissions.