What this page is: a restatement of what the official Federal Register
and manufacturer records show as of the date listed below each item. It is not
a determination that any specific aircraft or engine is, or is not, in compliance.
Under 14 CFR §91.403 and §91.417, the aircraft owner/operator is responsible
for maintaining airworthiness and required records. Always verify against the official FAA
and manufacturer sources linked below before making a maintenance or airworthiness decision.
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Airworthiness Directives
1 record
AD
2021-11-16
FR doc 2021-12043 · 86 FR 30756
AD 2021-11-16Published 2021-06-10Effective 2021-07-15
Piper Aircraft, Inc. Airplanes
Requires the spar carry through assembly inspection from AD 79-01-03 for additional airplanes and adds life limits for certain wing structural components previously omitted from AD 83-20-03 for certain serial numbered airplanes.
Full official abstract
Airworthiness Directives; Piper Aircraft, Inc. Airplanes
The FAA is superseding Airworthiness Directive (AD) 79-01-03, which applied to certain Piper Aircraft, Inc. (Piper) Model PA-36-285 airplanes, and AD 83-20-03, which applied to Piper Models PA-36-285, PA-36-300, and PA-36-375 airplanes. AD 79-01-03 required repetitive inspections of the spar carry through assembly until replaced with a different part numbered spar carry through assembly. AD 83-20-03 established life limits for the wing spar structural components. This AD retains the requirements in AD 79-01-03 and AD 83-20-03 and requires the spar carry through assembly inspection from AD 79-01-03 for additional airplanes and adds life limits for certain wing structural components previously omitted from AD 83-20-03 for certain serial numbered airplanes. The FAA is issuing this AD to address the unsafe condition on these products.
Source: Federal Register document 2021-12043, retrieved 2026-08-17 · re-verified against the live Federal Register API 2026-08-17
AD 85-02-05 R1Published 1997-11-03Effective 1997-11-21
The New Piper Aircraft, Inc. PA-20, PA- 22, PA-23, PA-24, PA-25, PA-30, PA-31P, PA-36, PA-39, and PA-44 Series Airplanes
Requires installing on the pilot's instrument panel a Piper part number (P/N) 81090-02 placard, which provides information for operation of the parking brake.
Full official abstract
Airworthiness Directives; The New Piper Aircraft, Inc. PA-20, PA- 22, PA-23, PA-24, PA-25, PA-30, PA-31P, PA-36, PA-39, and PA-44 Series Airplanes
This document clarifies information in Airworthiness Directive (AD) 85-02-05, which applies to all The New Piper Aircraft, Inc. (Piper) PA-20, PA-22, PA-23, PA-24, PA-25, PA-30, PA-31P, PA-36, PA-39, and PA-44 series airplanes. AD 85-02-05 currently requires installing on the pilot's instrument panel a Piper part number (P/N) 81090-02 placard, which provides information for operation of the parking brake. Piper has superseded that placard with a P/N 683-107 placard, and operators in need of a new placard can only obtain the P/N 683-107 placard. In this scenario, the owners/operators of the affected airplanes could not comply with AD 85-02-05 as currently written. The P/N 683-107 placard contains the same wording as the P/N 81090-02 placard. The actions specified in that AD are intended to prevent airplane controllability problems while involved in ground operation because of improper brake operations. This document maintains the placard requirement of AD 85-02-05, and adds the installation of the P/ N 683-107 placard as an option of compliance.
This document corrects or clarifies a previously issued AD of the same number — it is not a separate, additional requirement. Its "Effective" date above may predate its own "Published" date because it restates the original AD's effective date.
Source: Federal Register document 97-28983, retrieved 2026-08-15 · re-verified against the live Federal Register API 2026-08-17
