Commonwealth legislation

AD/BEECH 90/92 - Outflow/Safety Valve

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Commonwealth

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legislative instrument

Plain English Summary

3/10 complexity

This directive mandates a one‑time inspection — and replacement if required — of the outflow/safety valve on specified Beechcraft 65–90 series aeroplanes, performed exactly per Beech Service Bulletin 2484 Rev 1. It prohibits reinstalling any valve found unserviceable.

It applies to listed models/serials, must be done within 200 flight hours or 4 months, and affects owners/operators and maintenance providers who bear the cost; purpose is to prevent valve failures that could cause rapid decompression.

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Current sections

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AD/BEECH 90/92 - Outflow/Safety Valve

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

SCHEDULE OF AIRWORTHINESS DIRECTIVES

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Beechcraft 90 and 65-90 (King Air) Series Aeroplanes

AD/BEECH 90/92 Outflow/Safety Valve 3/98

Applicability: All 65-90, A90, B90, C90 and C90A aircraft, serial number LJ-1 through LJ-1302, E90 aircraft serial number LW-1 through LW-347 and F90 aircraft, serial number LA-2 through LA-236.

Requirement: Inspect and if necessary replace the outflow/safety valve in accordance with the procedures detailed in Beech SB 2484 Rev 1 dated October 1995.

No person shall install on any aircraft any Outflow/Safety Valve found to be unserviceable in accordance with this directive.

Note: FAA AD 97-25-01 Amdt 39-10224 refers.

Compliance: Within 200 hours’ time in service or 4 months, whichever occurs first, from the effective date of this directive.

This airworthiness directive becomes effective on the 26 February 1998.

Background: Manufacturing problems with the safety valve may cause a rapid decompression of the aircraft should a valve failure occur.

Source text

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

1 AD/BEECH 90/92 - Outflow/Safety Valve