This UNDERLAND G / GROTHE L V-6 airframe/engine combination has 11 current type-applicable Airworthiness Directives (0 airframe, 13 engine) and 2 historical. AD applicability is type-based — compliance status for N40423 must be verified against the aircraft maintenance logbooks.
Search FAA DRS for applicable ADs →N40423 is one of 2 UNDERLAND G / GROTHE L V-6 aircraft on the U.S. registry.
4 possible NTSB record matches for N40423 — see verification below.
Need maintenance, annual inspection, or avionics work? Find FAA-certified mechanics in ND.
Find Mechanics in ND Find IAs