AD 2021-04-07

final rule
Data completeness: 80%

Airworthiness Directives; Piper Aircraft, Inc. Airplanes

AD Number
2021-04-07
Status
final_rule
Effective Date
Product Category
aircraft
Docket
Docket No. FAA-2020-0830
FR Citation
86 FR 10770

Applicability

TypeManufacturerModelDetails
aircraft Piper Aircraft Airworthiness Directives; Piper Aircraft, Inc. Airplanes

Unsafe Condition

airplanes without the proper stall warning heater modification design change, which may result in failure of the stall warning system during flights into icing conditions with the landing gear down.

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

Required Actions

Inspect the stall warning heat control configuration and install the modification kit part number 88452-002.

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

Piper Aircraft, Inc., Models PA-46-350P (Malibu Mirage), PA-46R-350T (Malibu Matrix), and PA-46-500TP (Malibu Meridian) airplanes, serial numbers 4622041, 4636041, 4636142, 4636143, 4636313, 4636341, and 4636379, and PA-46-500TP (Malibu Meridian) airplanes, serial numbers 4697141, 4697161, 4697086, and 4697020.

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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