AD/B747/139 - Ageing Aircraft Structural Inspection Programme - CANCELLED

What this does This document cancels an older airworthiness directive (AD/B747/139) that required special structural inspections for ageing Boeing 747 aircraft.

Key terms An airworthiness directive is a mandatory safety instruction issued by the Civil Aviation Safety Authority (CASA). Compliance is legally required for aircraft to fly in Australia.

What it means for operators If you own or operate a Boeing 747, you still need to follow the ageing aircraft inspection rules. However, you should now look at AD/B747/79 (and its latest amendments) instead of this document. That directive contains the current Boeing documentation for the Structural Modification and Inspection Programme.

Why it changed The safety requirements haven't been removed—they've simply been consolidated into a different directive to avoid duplication and ensure operators are referring to the most current Boeing standards.