EASA SIB NM-15-23: Beechcraft (formerly Hawker) 4000 Aeroplanes — Aerodynamic Fairing Interference with Nose Landing Gear Doors

What to do

Owners, operators, and maintenance personnel of Beechcraft Model 4000 airplanes should follow the inspection and rigging procedures outlined in Beechcraft Model Communique # HK-4000-19 and the Model 4000 Maintenance Manual, Chapter 53-10-01, Revision A16. These inspections should be conducted at repetitive intervals as specified. There are no mandatory compliance deadlines, but adherence to these recommendations is advised to prevent interference issues.

Summary

The Beechcraft (formerly Hawker) 4000 Aeroplanes — Aerodynamic Fairing Interference with Nose Landing Gear Doors is a Special Airworthiness Information Bulletin issued by the FAA to inform owners, operators, and maintenance technicians about a potential interference issue between the radome and the nose landing gear doors on Beechcraft Model 4000 airplanes. This interference can prevent the nose landing gear from extending properly. The bulletin does not mandate corrective action but provides important safety information.

What changed

This bulletin introduces awareness of a potential safety issue where the radome stop bolt may not be rigged correctly, causing the radome to interfere with the nose landing gear doors. It references Beechcraft Model Communique # HK-4000-19 and revisions to the Model 4000 Maintenance Manual that provide inspection procedures to ensure proper rigging of the radome stop bolt. No airworthiness directive or mandatory regulatory action is issued at this time.

Why it matters

This information is critical for aviation professionals because improper rigging of the radome stop bolt can lead to nose landing gear extension failure, which poses a safety risk during landing. Operators and maintenance personnel need to be aware of this issue to prevent potential emergency landings and aircraft damage. Ensuring compliance with the recommended inspection procedures helps maintain aircraft safety and operational reliability.