EASA SIB 2015-08
Britten Norman BN2 Aeroplanes — Installation of Correct Access Panel Bolts
Summary
EASA Safety Information Bulletin SIB No. 2015-08 addresses the installation of correct access panel bolts on Britten Norman BN2 series "Islander" and BN2A-MkIII series "Trislander" aeroplanes. The bulletin highlights issues caused by the use of over length or unapproved bolts that can restrict control surface movement, such as aileron and elevator jamming. This information bulletin provides guidance to operators and maintenance organizations to prevent such occurrences.
What Changed
This bulletin introduces a safety recommendation to use only approved bolts when reinstalling access panels on the affected Britten Norman BN2 and Trislander aircraft. It draws attention to previous incidents where incorrect bolts caused control surface restrictions and emphasizes adherence to the B-N Parts Catalogue and Maintenance Instructions. No mandatory airworthiness directive action is proposed at this time.
Why It Matters
Using incorrect or over length bolts can cause jamming of critical flight control surfaces, potentially compromising aircraft safety. For operators and maintenance organizations, following this guidance helps ensure the freedom of control rods and prevents damage to control components. Compliance with the bulletin supports safe aircraft operation and avoids costly repairs or operational disruptions.
What To Do
Operators and maintenance organizations should verify that only approved bolts specified in the Britten Norman Parts Catalogue and Maintenance Instructions are used when reinstalling access panels. They should inspect any recent maintenance work for compliance and replace any unapproved bolts found. No specific compliance deadline is stated, but adherence is recommended as a best practice.