Commonwealth legislation

AD/BEECH 76/11 - Elevator Down Cable

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Commonwealth

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legislative instrument

Plain English Summary

2/10 complexity

This airworthiness directive requires owners/operators of Beechcraft Model 76 (serials ME-1 to ME-435) to open the lower inspection panel, create a 3/8" inspection hole if absent, visually inspect the elevator down cable and pulley routing, and replace specified guard pins or the cable and rigging if the cable is misrouted. Compliance is mandatory before further flight because two overseas in‑flight cable separations prompted the action.

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AD/BEECH 76/11 - Elevator Down Cable

COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY

SCHEDULE OF AIRWORTHINESS DIRECTIVES

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Beechcraft 76 (Duchess) Series Aeroplanes

AD/BEECH 76/11 Elevator Down Cable 2/82

Applicability: All model 76 with S/Nos. ME-1 to ME-435.

Requirement: 1. Remove the large inspection panel located in the centre of the bottom skin just aft of the Station 68 frame.

2. Drill a 3/8 inch diameter inspection hole in the forward flange to which the inspection panel was attached as follows:

Centre the hole laterally on the elevator cable pulley and fore and aft on the flange. Use a thin bucking bar or wood block between the flange and the pulley and cable to prevent damage to the pulley and/or cable when drilling the inspection hole.

Note: Aeroplane serial numbers ME-418 and subsequent have the 3/8 inch diameter inspection hole already drilled in the forward flange.

3. Deburr the inspection hole and visually inspect the elevator down cable for broken or frayed strands and ensure the cable is on the pulley under all three guard pins.

4. If the cable is riding over any of the guard pins, replace the P/N NAS 427K12 guard pins over which the cable was routed, replace the P/N NAS 314-25-1411 cable and rig in accordance with the Beech Model 76 Maintenance Manual.

5. Reinstall the inspection panel.

Note: FAA AD 82-02-03 dated 8 January 1982 refers.

Compliance: Before further flight.

Background: Overseas there have been two incidents of in flight elevator control cable separation due to misrouted cables.

Source text

Sourced from the Federal Register of Legislation (legislation.gov.au), CC BY 4.0.

1 AD/BEECH 76/11 - Elevator Down Cable