EASA SIB 2017-20: Slow Rotation Take-off

What to do

Operators of 4-engine wide-body aeroplanes and approved training organisations should evaluate whether slow rotation rate is a hazard in their operations by analyzing flight data monitoring, occurrence reports, and training activities. If identified as a risk, they should implement controls such as targeted training on rotation techniques based on manufacturer guidance, while considering potential new risks like tail strikes. Competent authorities are advised to include this issue in their oversight activities. No compliance deadlines are specified.

Summary

EASA Safety Information Bulletin No. 2017-20 is a safety information bulletin addressing the issue of slow rotation rates during take-off for 4-engine wide-body aeroplanes. The bulletin highlights safety concerns identified from investigations of incidents involving these aircraft types operating near maximum take-off weight on limitative runways. It aims to raise awareness among operators, approved training organisations, and competent authorities about the risks associated with slow rotation during take-off.

What changed

This bulletin introduces awareness of a safety issue related to slow rotation rates on take-off for 4-engine wide-body aeroplanes, based on preliminary investigation findings of serious incidents. It recommends operators and training organisations assess their procedures and risk management processes to mitigate this hazard, but does not impose mandatory regulatory changes or operational directives at this time.

Why it matters

The issue of slow rotation rate during take-off can lead to extended take-off runs and insufficient climb performance, especially on runways with operational limitations. Addressing this risk is critical for operators to maintain safe take-off performance and compliance with certification standards. Training organisations must ensure that flight crews are properly trained on manufacturer-recommended rotation techniques to prevent similar incidents.