AS9100 Rev D Laser Cutting for Aerospace Detail Parts

It depends on what happens to the edge. AS9100 Rev D covers the shop's overall quality management system and is the baseline every aerospace laser supplier needs, but NADCAP accredits specific special processes, not the cutting operation as a whole. Plain laser cutting of a blank or pre-form is generally not a NADCAP special process by itself. However, the moment your part requires a controlled special process around that cut, such as heat treatment, chemical etch or chemical milling to remove the recast layer, passivation, or non-destructive testing of the cut edge, your customer's flowdown will almost certainly require that the supplier performing that process hold the corresponding NADCAP accreditation. So an AS9100 laser shop can deliver the raw cut, but if the recast layer must be removed by chem-mill or the edge must be NDT inspected, confirm that the shop or its subtier carries NADCAP for that process. The clean rule: AS9100 governs the system, NADCAP governs the special processes. For a fatigue-critical or fracture-critical part, expect both to be in the chain.

AS9102 defines the triggers, and they are stricter than most buyers expect. A full FAI is required at the first production run of a part number. It is required again after any design change that affects fit, form, or function, which on a laser job includes a drawing revision that moves a hole or changes an edge callout. It is triggered by a change in the manufacturing process, including a change of laser, a change of assist gas strategy, or a move of the operation to a different machine or facility. A lapse in production of two years or more triggers a full FAI. A change of supplier or subtier for the cutting or any special process triggers it. A partial FAI, covering only the affected characteristics, is acceptable when only some features change rather than the whole part. The practical implication for buyers: if you re-source a part to a new AS9100 laser shop, even one with an excellent reputation, you owe the schedule and cost of a fresh FAI package, so build that into your transition plan rather than assuming the new shop can ship production parts on day one.

Traceability on AS9100 flight hardware runs from the mill to the finished detail and is non-negotiable for structural parts. When a sheet or plate of Ti-6Al-4V or Inconel arrives, the shop logs the EN 10204 3.1 mill certificate, which records the alloy, the heat or melt lot, and the mechanical and chemical properties, and ties it to a receiving record. As the material moves to the laser, the traveler carries the heat number forward so that every cut part can be traced back to the exact melt. This matters because aerospace alloys are subject to DFARS 252.225-7009 specialty metals restrictions, which on most defense work require the titanium and specialty alloys to be melted in qualifying countries, and the only way to prove that is documented melt traceability. AS9100 Rev D also requires control against counterfeit material under clause 8.1.4, so the shop must verify the mill cert is authentic and the material genuinely came from the named source. When you receive the parts you should get the mill cert package linking heat lot to part number, and for defense work the specialty metals compliance statement. If a shop cannot produce heat-lot traceability on demand, it is not running a real AS9100 system for flight hardware.

Because the laser leaves a metallurgically altered edge that many flight applications cannot accept as-is. The cutting process melts and rapidly resolidifies a thin layer at the edge, forming a recast layer and a heat-affected zone, and on titanium and high-strength steels it can leave an oxidized or alpha-case-prone surface. On a non-critical bracket that edge is fine. On a fatigue-critical or fracture-critical part, that altered edge is a crack initiation site and will not survive the certification fatigue spectrum. For those parts the engineering intent is usually to laser cut an oversize blank or pre-form, then remove the affected material by machining, grinding, or a NADCAP-accredited chemical mill, and finish with deburr and edge break to a controlled radius. AS9100 matters here precisely because the shop understands which features are key characteristics and where the laser edge must be removed rather than delivered. A good AS9100 laser supplier will tell you up front when your tolerance or fatigue requirement exceeds what a laser edge can hold and will quote the secondary operations rather than shipping a part that passes dimensional inspection but fails in service.