EASA AD 2021-0043-E
Air Conditioning — Cabin Heater and Carburettor Heater Ducts — Operational Restriction / Inspection
Summary
EASA Airworthiness Directive 2021-0043-E is an emergency directive addressing the incorrect installation of cabin heater and carburettor heater ducts on CEAPR DR400/100 and DR400/120 aeroplanes, specifically serial numbers 2212 to 2746 equipped with a 4 in 1 exhaust (Standard 01). The directive mandates operational restrictions and inspections to prevent potential carbon monoxide intoxication risks. It applies to aircraft manufactured by Centre Est Aéronautique, Avions Pierre Robin, CAB, APEX Industries, and Robin Aircraft.
What Changed
This new emergency directive introduces operational limitations in the Airplane Flight Manual and requires a one-time inspection of the cabin heater and carburettor heater ducts. It also mandates corrective actions if discrepancies are found to restore the installation to the approved design. The directive distinguishes requirements based on aircraft serial number groups and allows removal of limitations if inspections confirm compliance.
Why It Matters
This directive is critical for aviation professionals to prevent carbon monoxide poisoning risks that could lead to pilot incapacitation and loss of control. Operators and maintenance organizations must ensure compliance to maintain airworthiness and safety. The directive impacts flight operations and maintenance schedules by imposing pre-flight checks and inspections within specified timeframes.
What To Do
Operators of affected DR400/100 and DR400/120 aeroplanes must amend the Airplane Flight Manual with operational limitations before the next flight for Group 1 aircraft and conduct inspections within 60 flight hours or 30 days for Group 1, and within 60 flight hours or the next annual inspection for Group 2. Any discrepancies found during inspections must be corrected before further flight. Limitations may be removed if inspections confirm proper installation.
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