AD 2025-22-04

final rule
Data completeness: 80%

Airworthiness Directives; Bombardier, Inc., Airplanes

AD Number
2025-22-04
Status
final_rule
Effective Date
Product Category
aircraft
Docket
Docket No. FAA-2025-0483
FR Citation
90 FR 51501

Applicability

TypeManufacturerModelDetails
aircraft Bombardier Various Airworthiness Directives; Bombardier, Inc., Airplanes

Unsafe Condition

The flap system on-board recorder (FSOBR) interfaces with the flap control unit signals, causing the flap control unit monitors to trip, resulting in Flap Fail messages and possibly an uncommanded flap movement. This could lead to an uncommanded flap runaway and loss of control of the airplane.

AI-generated summary from the source AD text. Verify against the official source before acting.

Required Actions

Disconnect the FSOBR and prohibit future installation of this system. Also, prohibit reconnection of an FSOBR if one was installed on the airplane before the effective date of this AD.

AI-generated summary from the source AD text. Verify against the official source before acting.

Compliance Time

Before further flight

AI-generated summary from the source AD text. Verify against the official source before acting.

Affected Aircraft

Bombardier, Inc., Model CL-600-2B16 (604 Variant) airplanes.

AI-generated summary from the source AD text. Verify against the official source before acting.

Source: Official FAA Source ↗

Retrieved: Apr 4, 2026

Rights: U.S. Government Public Domain

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