Navigating First Article Testing (FAT) Requirements in DLA Hardware Contracts

First Article Testing (FAT) is one of the most significant technical hurdles for new DLA contractors. It serves as a validation that a manufacturer can produce a part that meets every dimension, tolerance, and material requirement defined in the Technical Data Package (TDP) before full-scale production begins.

FAT vs. Production Lot Testing (PLT)

While both involve testing, they serve different masters. FAT is a "proof of process" test, usually required when a contractor hasn't supplied the specific item to the DLA recently, or when the item is critical to safety (CSI). PLT (Production Lot Testing) is an ongoing quality assurance measure applied to every batch produced. Understanding which is required—and whether Government FAT or Contractor FAT is specified—is vital for accurate pricing.

Strategies for Technical Compliance

1. Identify FAT Deadlines: FAT typically has a strict 60, 90, or 120-day delivery window that is separate from your production delivery date.
2. Documentation Rigor: Your FAT report must be meticulously organized. Missing a single material certification or an out-of-tolerance measurement can trigger a total rejection of the first article.
3. The "Waiver" Trap: Never assume a FAT waiver will be granted based on "similar" items. Each National Stock Number (NSN) is its own ecosystem.