AD/DH 104/2 - Siebe Gorman Safety Belt - Modification - CANCELLED

What this does: This document officially cancels an old aircraft safety rule that required owners to modify the seatbelts (specifically Siebe Gorman safety belts) on De Havilland Dove aeroplanes.

Who it affects: This technically applies to owners of DH 104 (Dove) series aircraft, though in practice all affected planes were modified decades ago.

The background: In 1971, the aviation safety regulator issued a directive requiring a specific modification to safety belts on these aircraft, with a compliance deadline of 1 September 1971. This document cancels that old rule because it is no longer needed—after nearly 40 years, every affected aircraft has already been modified.

Why it matters: This is regulatory housekeeping. By cancelling obsolete safety directives, the regulator removes unnecessary compliance burdens from aircraft maintenance crews and ensures the rulebook only contains current, relevant requirements.