Engine — Fuel and Control — Airplane Flight Manual Limitations and Procedures — Engine Surge at Low Altitude under Certain Environmental Conditions
- Published
- Effective
- Deadline
AI-generated summary of the official EASA document. Verify against the PDF before acting.
What to do
Operators must amend the AFM for affected Bombardier BD-100-1A10 aircraft to include the new limitations and procedures within 60 days of the effective date. Flight crews must be advised of these changes promptly. Compliance with these AFM revisions is mandatory to continue legal operation of the aircraft.
Summary
The Canadian Airworthiness Directive CF-2020-47 addresses engine surge issues at low altitude during takeoff for Bombardier Inc. model BD-100-1A10 aeroplanes equipped with AS907-1-1A engines. This directive mandates revisions to the Airplane Flight Manual (AFM) to mitigate engine surge risks under certain environmental conditions. The directive applies specifically to serial numbers 20003 through 20457 of the affected aircraft.
What changed
CF-2020-47 introduces new limitations and procedures in the AFM requiring engine bleed air to be turned ON during takeoff to reduce the risk of engine surge. It mandates updating the AFM sections on limitations and normal procedures to the specified revision or later Transport Canada approved revisions. Additionally, flight crews must be informed of these changes.
Why it matters
This directive is critical for operators and maintenance teams as it addresses a safety hazard where engine surges at low altitude can cause significant thrust loss or engine shutdown, potentially affecting both engines simultaneously. Compliance ensures safer takeoff operations under specific environmental conditions and helps prevent hazardous situations. It also impacts flight crew procedures and training.
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