AD 2020-10-05

final rule
Data completeness: 80%

Airworthiness Directives; Rockwell Collins, Inc. Flight Management Systems

AD Number
2020-10-05
Status
final_rule
Effective Date
Product Category
aircraft
Docket
Docket No. FAA-2018-0977
FR Citation
85 FR 30597

Unsafe Condition

The flight management computer (FMC) software issuing incorrect turn commands when the altitude climb field is edited or the temperature compensation is activated on the FMS control display unit.

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

Required Actions

Disabling the automatic temperature compensation feature of the FMS through the configuration strapping units (CSU) and revising the airplane flight manual (AFM) Limitations section.

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Compliance Time

Within 12 months of effective date

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Affected Aircraft

Rockwell Collins, Inc. Pro Line 4 and Pro Line 21 Flight Management Systems installed on certain part-numbered Rockwell Collins Pro Line 4 and Pro Line 21 FMSs.

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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View Official Source ↗