Codified — the stock numbers
The codification catalogue keys on the item of supply — each stock number opens the catalogue's own family, with approved sources and order of use.
NSN5970-00-688-9004FLIS
NSN5970-00-829-2972FLIS
NSN5970-00-841-6606FLIS
NSN5970-00-845-7243FLIS
NSN5970-00-889-3844FLIS
NSN5970-00-892-0933FLIS
NSN5970-00-923-4470FLIS
NSN5970-00-926-7311FLIS
NSN5970-00-998-0290FLIS
NSN5970-00-001-9373FLIS
NSN5970-00-050-5642FLIS
NSN5970-00-050-5659FLIS
Approved alternates — codified interchangeability (FLIS I&S)
Order of use is the catalogue's, not ours. Every member opens its own part-number family.
NSN 5970-00-552-0198 GS830L-12Y NORTHROP GRUMMAN SYSTEMS CORPORATION · OEM source-control reference
NSN 5970-00-778-6107 105 3M CO ADMININISTRATIVE ELECTRONIC &
NSN 5970-00-981-3172 4006 HIGH VOLTAGE ENGINEERING CORP NATVAR
NSN 5970-01-079-3882 411634-3800 RAYTHEON COMPANY
NSN 5970-01-079-3883 411634-5000 RAYTHEON COMPANY
NSN 5970-00-956-6429 460027-09 BAE SYSTEMS INFORMATION AND ELECTRO
NSN 5970-00-777-4367 6735028-3 GENERAL MOTORS CORP
NSN 5970-00-329-9798 6746-5-1-20BLK ITT AEROSPACE CONTROLS LLC
NSN 5970-01-038-0466 6746-6-1.5BLK ITT AEROSPACE CONTROLS LLC
NSN 5970-00-245-3843 7472368-10 LOCKHEED MARTIN CORPORATION
Also on this specification — related, not interchangeable
Other designations qualified to the same line. A different size or class on one document is a NEIGHBOUR, not a substitute — ABS5093B25 (25 mm) and ABS5093B485 (485 mm) share a specification and are not swaps for each other. Each names the line that vouches for it.
Nothing else is published on these lines yet — coverage grows with each qualified-products cycle.
Staying inside the regulation — routes from candidate to approved
Codification and qualification say who vouches for a part — they are not installation eligibility. Under EASA Part-21, eligibility flows from the approved design (type design / IPC) or an approved change; under Part-145, acceptance needs an EASA Form 1 or, for genuine standard parts, conformity traceable to the officially recognised standard (145.A.42).
- Classify the part. Is it a GENUINE standard part? If the IPC/CMM references only a public specification (AN/MS/NAS/SAE-AS/ISO/EN) with no OEM source-control drawing, buy at source with conformity traceable to that standard.
- Check for an approved alternate. The IPC/CMM/vendor list may already carry an alternate part number or vendor code — an already-approved alternate needs no new approval.
- Ask the design approval holder. Request the source-control data, written equivalence, or addition of the alternative source to the approved data. Document a refusal.
- Raise a design change. Via a Part-21J DOA (or EASA/ADOA): a 21.A.95 minor change adding the alternate to the approved data, backed by an identicality/equivalence file — dimensions, material, class, load rating, lubricant/seal, corrosion protection, acceptance criteria. Critical applications escalate to major change/STC.
- FAA-PMA / BASA path. Where the product is also FAA-certificated: PMA parts reach EASA aircraft under the BASA/TIP (non-critical directly; critical via EASA-validated STC).
- Production, release, traceability. Approved parts are produced under a POA, released on an EASA Form 1 (marked EPA where applicable), with EN/AS 9120-grade traceability into Part-145/CAMO acceptance.
Stage 1(a): we assemble the equivalence/identicality starter file — the cited evidence this graph holds, shaped for your DOA or compliance department to take forward. See pricing.
Regulatory explainer, not legal advice: paragraph numbers, derogations and the BASA/TIP revision change — verify against the current consolidated Regulation (EU) 748/2012, the EASA Easy Access Rules and the current TIP, and engage your DOA and competent authority early.