EASA SIB 2009-10R1: WITHDRAWN - RECOMMENDATIONS NOT NEEDED ANYMORE

What to do

Operators should review and, if appropriate, amend their operations manuals to ensure take-off slats and flaps are selected during periods of lower workload, ideally before taxiing away from the ramp, provided this aligns with the Flight Crew Operating Manual and operational conditions. Type approval holders should assess their manuals for possible amendments. Operators are also encouraged to monitor the effectiveness of take-off configuration checklists using in-service data. No mandatory compliance deadlines are specified.

Summary

EASA Safety Information Bulletin SIB No. 2009-10R1 is a withdrawn bulletin originally addressing the monitoring of take-off slats and flaps settings during departure for all aeroplanes equipped with these devices and operated under a Flight Crew Operating Manual or equivalent. It specifically referenced incidents involving McDonnell Douglas DC-9-80 (MD-80) and Boeing 737 aircraft families where improper take-off configuration contributed to accidents. The bulletin provided safety recommendations to improve operational procedures and checklist effectiveness to prevent take-off configuration errors.

What changed

This revision of EASA SIB No. 2009-10 removes previous recommendations regarding ground crew monitoring of slats and flaps settings. It emphasizes that recommendations are now for information only and are not mandatory. The bulletin encourages operators and type approval holders to review and possibly amend procedures related to take-off flap and slat selection timing to reduce flight crew workload and distractions.

Why it matters

Proper take-off configuration is critical to flight safety, as incorrect flap or slat settings can lead to catastrophic outcomes. Aviation professionals, including operators and maintenance organizations, benefit from understanding human factors that contribute to configuration errors and from implementing improved procedures to enhance safety. This bulletin highlights the importance of effective checklist use and procedural timing to reduce risks during departure.