Resulting Safety Initiatives

Unclear guidance concerning proper techniques for changing engines or executing certain critical maintenance tasks, and a lack of regulatory oversight led to the adoption of 14 CFR 25.1529, Instructions for Continued Airworthiness, and companion requirements in 14 CFR parts 23, 27, and 29.

The actual requirements of 14 CFR 25.1529 are contained in Appendix H.

In association with the creation of 14 CFR 25.1529, 14 CFR 43.16 and 14 CFR 91.403(c) were added at amendment 20 and amendment 267, respectively, as companion requirements to the part 25 requirements.

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