Commonwealth legislation

AD/LEARJET 35/19 Amdt 1 - Stall Warning Accelerometer

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Jurisdiction

Commonwealth

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legislative instrument

Plain English Summary

3/10 complexity

This directive mandates inspections and any corrective work per Gates Learjet Service Bulletin SB 35/36-27-12B for Learjet 35/36 aeroplanes with specified serial numbers, unless fitted with Accessory Kit 83‑2. It was issued because faulty stall‑warning accelerometers or wiring plus inadvertent stick‑pusher activation could cause an unrecoverable upset. Affected owners/operators must pay for the initial check (within 50 flight hours after the effective date) and recurring checks every 220 hours, increasing ongoing maintenance burden.

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Current sections

Direct links to the current provisions in AD/LEARJET 35/19 Amdt 1 - Stall Warning Accelerometer.

AD/LEARJET 35/19 Amdt 1 - Stall Warning Accelerometer

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

SCHEDULE OF AIRWORTHINESS DIRECTIVES

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Gates Learjet 35 and 36 Series Aeroplanes

AD/LEARJET 35/19

Amdt 1

Stall Warning Accelerometer 2/86

Applicability: All models 35, 35A, 36, 36A with S/Nos. 35-001 to 35-505, 36-001 to 36-053 NOT incorporating Gates Learjet Aircraft Accessory Kit 83-2.

Requirement: Gates Learjet SB 35/36-27-12B;

Note: FAA AD 82-01-05 R2 also refers.

Compliance: Unless Already Accomplished - Within the next 50 hours time in service after 9 March 1982 and thereafter at every 220 hours time in service.

Background: Faulty accelerometers or an improperly wired stall warning system when coupled with an inadvertent stick pusher operation during cruise flight could present control forces and flight upset beyond the capability of the crew to recover. Amdt 1 identifies applicable aeroplane serial numbers and escalates check hours.

Source text

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

1 AD/LEARJET 35/19 Amdt 1 - Stall Warning Accelerometer