RegNotify

EASA Regulations for Bombardier BD-100

41 airworthiness directives and regulations affecting Bombardier BD-100.

EASA AD CF-2025-58

Time Limits/Maintenance Checks (TLMC) — Airworthiness Limitations (AWL)

Airworthiness Directive CF-2025-58 is issued by Transport Canada and applies to Bombardier Inc. model BD-100-1A10 aeroplanes, specifically the Challenger 300 and Challenger 350 series. This directive mandates compliance with updated Time Limits/Maintenance Checks (TLMC) and Airworthiness Limitations (AWL) as published in Bombardier's TLMC manuals. It ensures that new or more restrictive maintenance tasks are performed to maintain the structural integrity and airworthiness of these aircraft.

Nov 14, 2025
Airworthiness DirectiveMaintenanceSafety MgmtBombardier BD-100

EASA AD CF-2025-42

Flight Controls — Horizontal Stabilizer — Autopilot Inability to Trim Horizontal Stabilizer

Canadian Airworthiness Directive CF-2025-42 addresses an autopilot issue affecting Bombardier Inc. BD-100-1A10 (Challenger 300/350) aircraft. The directive focuses on the inability of the autopilot to trim the horizontal stabilizer, which has led to pitch upset events upon autopilot disconnect. It mandates changes to the Airplane Flight Manual to improve pilot response to related alerts.

Aug 28, 2025
Airworthiness DirectiveFlight OpsSafety MgmtBombardier BD-100

EASA SIB CASA-2025-03

Flight Controls — Unannunciated Loss of Ground Lift Dump Spoilers due to Faulty Throttle Quadrant Assembly

Transport Canada Civil Aviation Safety Alert CASA 2025-03 addresses failures in the ground lift dump spoiler system on Bombardier Inc. BD-100-1A10 (Challenger 300/350) aircraft caused by faulty throttle quadrant assemblies (TQA). The alert highlights that silicon contamination in the TQA switches can prevent ground spoilers from deploying on landing without any warning to the flight crew. This issue affects all BD-100-1A10 aircraft with serial numbers post 20806.

Apr 9, 2025
Safety Information BulletinFlight OpsMaintenanceSafety MgmtBombardier BD-100

EASA AD CF-2024-38

Flight Controls — Horizontal Stabilizer Trim Actuator (HSTA) — Incomplete Overhaul

Canadian Airworthiness Directive CF-2024-38 addresses an incomplete overhaul issue with the Horizontal Stabilizer Trim Actuator (HSTA) on Bombardier Inc. model BD-100-1A10 aircraft. The directive applies to HSTA part numbers C47100-004 and C47100-005 and requires verification and possible replacement of affected units. This directive aims to ensure continued safe flight by preventing potential failure of HSTA components.

Nov 15, 2024
Airworthiness DirectiveMaintenanceSafety MgmtBombardier BD-100

EASA AD CF-2024-17

Time Limits/Maintenance Checks — Airworthiness Limitations

Canadian Airworthiness Directive CF-2024-17 is issued for Bombardier Inc. model BD-100-1A10 aeroplanes, including Challenger 300 and Challenger 350 variants. It mandates compliance with updated Time Limits/Maintenance Checks (TLMC) and Airworthiness Limitations (AWL) as specified in the latest Bombardier TLMC publications. This directive ensures continued airworthiness by enforcing new or more restrictive maintenance tasks and intervals.

May 24, 2024
Airworthiness DirectiveMaintenanceSafety MgmtBombardier BD-100Bombardier BD-100-1A10

EASA AD CF-2023-78

Time Limits / Maintenance Checks — Addition of Certification Maintenance Requirement Task

Canadian Airworthiness Directive CF-2023-78 addresses Bombardier Inc. BD-100-1A10 aeroplanes, including all serial numbers of the Challenger 300 and Challenger 350 models. This directive introduces a new Certification Maintenance Requirement (CMR) task related to the restoration of the left direct current power centre (DCPC) to mitigate erratic electrical system status indications. The directive aims to enhance aircraft safety by preventing electrical power loss incidents linked to contaminated electrical contacts.

Dec 20, 2023
Airworthiness DirectiveMaintenanceSafety MgmtBombardier BD-100Bombardier BD-100-1A10

EASA AD CF-2023-77

Flight Controls — Horizontal Stabilizer — Unintended Horizontal Stabilizer Motion

Canadian Airworthiness Directive CF-2023-77 addresses unintended horizontal stabilizer motion on Bombardier BD-100-1A10 aircraft, serial numbers 20003 through 20936. This directive mandates modifications to the horizontal stabilizer pitch trim switch wiring to prevent uncommanded or opposite-direction stabilizer movements. The AD aims to enhance flight safety by correcting wiring issues that could compromise aircraft controllability.

Dec 18, 2023
Airworthiness DirectiveMaintenanceSafety MgmtBombardier BD-100Bombardier BD-100-1A10

EASA AD CF-2023-72

Equipment/Furnishings — Baggage Bay Sidewall Heater Mat — Excessive Heat

Canadian Airworthiness Directive CF-2023-72 addresses excessive heat issues in the baggage bay sidewall heater mats of Bombardier Inc. model BD-100-1A10 aeroplanes, specifically serial numbers 20003 through 20364, 20366, 20367, 20369, and 20372. This directive mandates modifications to the baggage bay sidewall interior panel, heater mats, and water tank heater installation to prevent overheating and potential fire hazards. It also permits the re-activation of the left-hand baggage bay sidewall heater mat previously deactivated under an earlier directive.

Oct 20, 2023
Airworthiness DirectiveMaintenanceSafety MgmtBombardier BD-100Bombardier BD-100-1A10

EASA AD CF-2023-48R1

Indicating / Recording System — Misleading Pitch Trim Indication and Alerting for Take-off

Canadian Airworthiness Directive CF-2023-48R1 addresses misleading pitch trim indication and alerting issues for take-off on Bombardier BD-100-1A10 Challenger 300 and 350 aircraft, serial numbers 20003 to 20936. The directive mandates updates to the Airplane Flight Manual (AFM) procedures to ensure correct horizontal stabilizer positioning during take-off. This revision updates aircraft applicability and corrects references from Non-Normal to Normal AFM procedures.

Oct 10, 2023
Airworthiness DirectiveFlight OpsSafety MgmtBombardier BD-100Bombardier BD-100-1A10 Challenger 300Bombardier BD-100-1A10 Challenger 350

EASA AD CF-2023-35

Electrical Power — Misleading Indications

Canadian Airworthiness Directive CF-2023-35 addresses misleading electrical power indications on Bombardier Inc. model BD-100-1A10 aeroplanes. The directive targets erratic electrical system status indications caused by contamination in the left-hand direct current power centre (DCPC) data bus, which can lead to partial or complete electrical power loss and affect flight displays and controllability.

May 30, 2023
Airworthiness DirectiveMaintenanceSafety MgmtBombardier BD-100Bombardier BD-100-1A10

EASA AD CF-2023-34

Time Limits / Maintenance Checks — Introduction of Certification Maintenance Requirement Task

Canadian Airworthiness Directive CF-2023-34 introduces new and revised Certification Maintenance Requirement (CMR) tasks for Bombardier Inc. model BD-100-1A10 aeroplanes, including Challenger 300 and Challenger 350 variants. The directive mandates updates to the Time Limits/Maintenance Check (TLMC) manual Part 2 concerning the restoration and overhaul of the Horizontal Stabilizer Trim-Actuator (HSTA) with specific part numbers C47100-003, C47100-004, and C47100-005. This directive ensures continued airworthiness by addressing potential failures in the HSTA and motor brake assembly.

May 30, 2023
Airworthiness DirectiveMaintenanceSafety MgmtBombardier BD-100Bombardier BD-100-1A10

EASA AD CF-2023-33

Ice and Rain Protection — Air Data Probes and Sensors — Heater Current Monitor Unit Failure Detection

Canadian Airworthiness Directive CF-2023-33 addresses ice and rain protection issues related to air data probes and sensors on Bombardier Inc. BD-100-1A10 aircraft, serial numbers 20003 through 20936. This directive mandates modifications to the heater current monitor units to detect failures and update flight manual procedures accordingly. The directive aims to enhance safety by ensuring reliable ice protection and accurate air data indications.

May 11, 2023
Airworthiness DirectiveMaintenanceSafety MgmtBombardier BD-100Bombardier BD-100-1A10

EASA AD CF-2022-03R1

Flight Controls — Horizontal Stabilizer Trim Switch — Unintended Horizontal Stabilizer Motion

Flight Controls — Horizontal Stabilizer Trim Switch — Unintended Horizontal Stabilizer Motion is a Canadian Airworthiness Directive (CF-2022-03R1) addressing an issue with Bombardier BD-100-1A10 (Challenger 300/350) aircraft. It concerns unintended horizontal stabilizer movements following a STAB TRIM FAULT advisory and autopilot disengagement, which can lead to increased pilot workload and reduced safety margins. The directive mandates updates to flight manuals and procedures to mitigate this risk.

May 9, 2023
Airworthiness DirectiveFlight OpsSafety MgmtBombardier BD-100Bombardier BD-100-1A10

EASA AD CF-2023-29

Nacelles / Pylons — Pylon Aft Engine Mount Attachment Bolts — Discarding and Replacement of Bolts not Performed

The Airworthiness Directive CF-2023-29 addresses an issue with Bombardier Inc. model BD-100-1A10 aeroplanes, including Challenger 300 and Challenger 350 variants. It concerns the incorrect part number referenced in the Time Limits/Maintenance Check manual for the pylon aft engine mount attachment bolts, which could lead to failure if not properly replaced. This directive mandates the correct discard and replacement of these bolts to ensure continued airworthiness.

May 9, 2023
Airworthiness DirectiveMaintenanceSafety MgmtBombardier BD-100Bombardier BD-100-1A10

EASA AD CF-2023-26

Flight Controls — Pitch Trim — Mis-Trimmed Horizontal Stabilizer Leading to Controllability Issues

Canadian Airworthiness Directive CF-2023-26 addresses a flight control issue involving the pitch trim system on Bombardier BD-100-1A10 Challenger 300 and 350 aircraft, serial numbers 20003 through 20910. The directive highlights problems caused by a mis-trimmed horizontal stabilizer leading to controllability difficulties, especially after autopilot disconnect. It mandates updates to the Airplane Flight Manual to improve pilot procedures during such events.

May 4, 2023
Airworthiness DirectiveFlight OpsSafety MgmtBombardier BD-100Bombardier BD-100-1A10 Challenger 300Bombardier BD-100-1A10 Challenger 350

EASA AD CF-2023-13

Landing Gear — Nose Wheel Steering System — Steering Control Unit Filter Plate Connector Failure

Canadian Airworthiness Directive CF-2023-13 addresses a safety issue on Bombardier Inc. model BD-100-1A10 aeroplanes related to the nose wheel steering system. The directive targets the Steering Control Unit (SCU) filter plate connector, part number 46000-01, which may fail due to non-compliance with high intensity radiated field certification requirements. This failure could cause un-commanded steering or lateral runway excursions.

Feb 28, 2023
Airworthiness DirectiveMaintenanceSafety MgmtBombardier BD-100Bombardier BD-100-1A10

EASA AD CF-2023-09

Pneumatic — Non-Conforming Bleed Air Leak Detection System Sensing Elements

Canadian Airworthiness Directive CF-2023-09 addresses a safety issue in Bombardier Inc. model BD-100-1A10 (Challenger 300/350) aircraft related to non-conforming bleed air leak detection system sensing elements. These sensing elements may have insufficient salt fill, impairing the detection of hot bleed air leaks. The directive mandates revisions to the Airplane Flight Manual and testing or replacement of affected sensing elements to ensure continued safe flight.

Feb 15, 2023
Airworthiness DirectiveMaintenanceSafety MgmtBombardier BD-100Bombardier BD-100-1A10

EASA AD CF-2022-24R1

Flight Controls - Stabilizer Trim Switch Failure

Canadian Airworthiness Directive CF-2022-24R1 addresses the failure of the stabilizer trim switch on Bombardier BD-100-1A10 aircraft. This directive mandates inspection, removal, and replacement of affected horizontal stabilizer pitch trim switches to prevent unintended nose-down stabilizer movement. It applies to all serial numbers of the BD-100-1A10 model.

Oct 18, 2022
Airworthiness DirectiveMaintenanceSafety MgmtBombardier BD-100Bombardier BD-100-1A10

EASA AD CF-2022-57

Landing Gear — Nose Landing Gear Door Hinge Fitting Failure

Canadian Airworthiness Directive CF-2022-57 addresses a nose landing gear door hinge fitting failure issue on Bombardier Inc. model BD-100-1A10 aeroplanes, including all serial numbers. The directive mandates inspections to detect cracks in the fillet radii of the nose landing gear door hinge fittings to prevent door misalignment and potential in-flight hazards. This AD applies specifically to the Challenger 300 and Challenger 350 variants of the BD-100-1A10.

Oct 6, 2022
Airworthiness DirectiveMaintenanceSafety MgmtBombardier BD-100Bombardier BD-100-1A10

EASA AD CF-2022-55

Flight Controls — Incorrectly Installed Horizontal Stabilizer Trim Actuator No-Back Pawl

Canadian Airworthiness Directive CF-2022-55 addresses a design deficiency in the horizontal stabilizer trim actuator (HSTA) no-back pawl installation on Bombardier BD-100-1A10 aircraft, serial numbers 20003 and later. This directive mandates inspection and corrective actions to ensure proper installation of the no-back pawl to prevent potential loss of the aircraft. It applies specifically to certain HSTA part and serial numbers identified in Bombardier Service Bulletins SB 100-27-20 and SB 350-27-009.

Sep 23, 2022
Airworthiness DirectiveMaintenanceSafety MgmtBombardier BD-100Bombardier BD-100-1A10