EASA SIB 2010-05: [Correction] Eurocopter AS350 and AS355 helicopters - Improvement of Pilot—s and Co-pilot—s Seats

What to do

Operators of Eurocopter AS350 and AS355 helicopters without the improved pilot and co-pilot seats should review Eurocopter Service Letter No. 1424-25-99 and Information Notice No. 2138-I-25. They are encouraged to incorporate the recommended seat reinforcements and energy-absorbing seat installations as described in the referenced service bulletins. No mandatory compliance deadline is specified, but timely adoption is advised to enhance safety.

Summary

EASA Safety Information Bulletin 2010-05 is a correction bulletin addressing the improvement of pilot and co-pilot seats on Eurocopter AS350 and AS355 helicopters. It references previous Eurocopter service letters and service bulletins that introduced strengthened and energy-absorbing seat options to enhance occupant safety. The bulletin applies to AS350 and AS355 models without the recommended seat improvements installed.

What changed

This bulletin reiterates and updates information from earlier Eurocopter publications regarding the availability of improved pilot and co-pilot seats that offer increased strength and crashworthiness. It highlights service bulletins recommending reinforcement of bucket seats and installation of energy-absorbing seats as optional modifications to enhance occupant protection. The bulletin itself does not mandate changes but strongly recommends operators adopt these improvements.

Why it matters

The bulletin is important for aviation professionals because it addresses safety concerns arising from accidents involving front seat failures on AS350 and AS355 helicopters. Operators and maintenance organizations can improve occupant protection in the event of an impact by installing the improved seats. Although not mandatory, implementing these enhancements can reduce injury risk and improve overall safety performance of the affected helicopters.