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Collins 54W-1 comparator warning monitor — the flight-director safety box that continuously compares the captain's and first officer's attitude, heading and approach signals and lights a warning if the two sides disagree. The face carries a bank of annunciators — COMPASS, MASTER, PITCH, BANK, GS and LOC — around a central PUSH TO TEST button, under a TEST LIGHTS legend and the orange Collins 54W-1 badge.
Sold AS-IS / as-removed. UNTESTED. No current airworthiness tag / no 8130-3. NOT for aircraft installation / not approved for return to service. Not sold as an aircraft part. Sold for display, collecting, flight-sim, study, or repair/overhaul. Buyer assumes all responsibility for any use.
Brand: Collins Radio Company, Cedar Rapids, Iowa
Type: 54W-1
Collins P/N: 522-2788-005
Serial No.: 300
Plate Marking: TSO-C52a, 115VAC 400CPS 100VA, 12.1 lb
Repair Station Sticker: ASI Avionics Specialist, Inc., Memphis TN
Theme: Commercial Aviation / Flight Director
About the source of this item
From the leftover inventory of an aviation component shop that did inspection, repair and certification work. When the company closed, the remaining stock was sold at sale. That origin matters: this is not random scrap from an unknown garage, it sat in a professional aviation-parts environment. It does not mean the unit was finished, tested or released before the shop closed, and it does not mean it is approved for flight use today.
