Commonwealth legislation

AD/BEECH 50/28 - Wheel Well Fuel Lines

In ForceCTH

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Commonwealth

Collection

legislative instrument

Plain English Summary

3/10 complexity

Replaces all small aluminium fuel lines upstream of the fuel‑selector valve in each main landing‑gear wheel well on Beechcraft 50 (Twin Bonanza) aeroplanes with stainless‑steel lines (Requirement). The rule applies to all models (Applicability), excludes the large‑diameter tank interconnect (Note), and had to be completed by 1 July 1979 (Compliance). The stated aim is to reduce the risk that wheel‑well line burn‑through during an engine‑compartment fire will feed uncontrolled fuel to the fire and threaten the wing main spar (Background).

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Current sections

Direct links to the current provisions in AD/BEECH 50/28 - Wheel Well Fuel Lines.

AD/BEECH 50/28 - Wheel Well Fuel Lines

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

SCHEDULE OF AIRWORTHINESS DIRECTIVES

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Beechcraft 50 (Twin Bonanza) Series Aeroplanes

AD/BEECH 50/28 Wheel Well Fuel Lines 4/79

Applicability: All models.

Requirement: Replace all aluminium fuel lines upstream of the fuel selector valve in each main landing gear wheel well with lines fabricated from stainless steel.

Note: This requirement does not include the large diameter fuel tank interconnect line situated in the aft section of the wheel wells.

Compliance: Before 1 July 1979.

Background: In the event of an uncontained engine compartment fire it is known that flames will be directed by the slipstream into the main landing gear wheel wells, through which unprotected aluminium fuel lines of small diameter are located. Should any line burn through upstream of the fuel selector valve an uncontrollable amount of fuel will be added to the fire and the integrity of the wing main spar will be endangered. In order to reduce this threat, the aluminium fuel lines are to be replaced with those of stainless steel.

Source text

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

1 AD/BEECH 50/28 - Wheel Well Fuel Lines