Part catalog
MS21902W4
UNION-1/4"OD ALU.ALLOY
ATA 99 · ATA 99
Catalog record
- Part number
- MS21902W4
- ATA chapter
- ATA 99 · ATA 99
- Source observations
- 4
- Last observed
- 2026-06-05
Catalog data is source-backed reference information. It does not establish availability, repair capability, certification, traceability, ownership, or airworthiness.