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American Aviation Parts datum · avionics

Condition codes explained

Updated Sep 18, 2026 MST

Every part is listed with a condition code so you know exactly what you are buying — and what paperwork to expect. Codes follow standard FAA-style usage; the certification a part carries always depends on its condition and is shown on the listing.

FN Factory New Airworthy-capable
Brand-new from the original manufacturer's production line, never installed or operated, supplied with full manufacturer documentation.
Certification typically expected: 8130-3 / C of C
NE New Airworthy-capable
New and unused in original packaging. May be OEM or authorized-distributor stock issued with new certification.
Certification typically expected: 8130-3 / C of C
NS New Surplus Airworthy-capable
New, unused stock that has left the original supply chain (overstock or old stock). Unused, though it may carry an older manufacture date.
Certification typically expected: 8130-3 / trace
OH Overhauled Airworthy-capable
Disassembled, cleaned, inspected, repaired as necessary, reassembled and tested to the manufacturer's overhaul limits — restored to zero-time where the data permits.
Certification typically expected: 8130-3 (dual-release)
IN Inspected Airworthy-capable
Inspected against the applicable data and found airworthy. The inspection findings are disclosed on the part tag.
Certification typically expected: Inspection record
SV Serviceable Airworthy-capable
Inspected and found within serviceable limits — airworthy and fit for return to service, but not zero-timed like an overhaul.
Certification typically expected: 8130-3 / serviceable tag
RP Repaired Airworthy-capable
A specific defect was repaired and the unit returned to a serviceable condition. A targeted repair, not a full overhaul.
Certification typically expected: 8130-3
AR As Removed Not airworthy as-is
Removed from an aircraft "as is" with no testing, repair or paperwork implied. Airworthiness MUST be established by an appropriately rated person before installation.
Certification typically expected: None — as-is

Codes describe condition, not installation eligibility. The installing A&P/IA makes the final airworthiness determination for your aircraft. How traceability works →