Fixed Wing Single Engine · CONT MOTOR A&C65 SERIES · as of Sep 21, 2026
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Distribution · currently registered
By state (top 10)
- IL 50.0% 1
- TX 50.0% 1
By decade of manufacture
- Unknown 100.0% 2
NTSB records
No NTSB-recorded events match PIPER L-4 in the indexed corpus.
NASA ASRS reports · 5
De-identified, pilot-written, voluntary and not investigated — the reporter's perspective; cannot infer prevalence.
- ACN 1961141 Commuter and GA Icing Incidents Piper Single Undifferentiated or Other Model A Center Controller reported an aircraft encountering icing descended below the Minimum Vectoring Altitude.
- ACN 2047700 General Aviation Flight Training Reports Piper Aircraft Corp Undifferentiated or Other Model A Flight Instructor reported a NMAC after turning to a heading assigned by the Tower.
- ACN 2271661 Non-Tower Airport Incidents Skyhawk 172/Cutlass 172 C172SP Flight Instructor reported taking evasive action to avoid traffic pattern traffic resulted in a NMAC event.
- ACN 2054966 Runway Incursions Piper Aircraft Corp Undifferentiated or Other Model Piper pilot reported a critical ground conflict by violating the clearance to hold short of the runway with an aircraft on short final. The Tower issued the landing aircraft a go around clearance to a
- ACN 2022593 Runway Incursions Aero Commander 695 Pilot crossing a runway at a non-towered airport reported a near collision with another aircraft taking off on the same runway.
Research papers
- NASA NTRS 2024 · Conference Paper An Experimental System for Strategic Flight Path Management in Advanced Air Mobility In the concept envisioned for Urban Air Mobility (UAM) operations, fleets of electric vertical takeoff and landing (eVTOL) vehicles would operate between vertiports distributed within a densely popula…
- NASA NTRS 2024 · Presentation An Experimental System for Strategic Flight Path Management in Advanced Air Mobility In the concept envisioned for Urban Air Mobility (UAM) operations, fleets of electric vertical takeoff and landing (eVTOL) vehicles would operate between vertiports distributed within a densely popula…
- NASA NTRS 2024 · Conference Paper Designing a Flight Test of a Flight Path Management System for Advanced Air Mobility Research The National Aeronautics and Space Administration (NASA) has completed a flight test to evaluate the performance of an onboard prototype automation system operating in future high density urban airspa…
Airworthiness directives
13 directive(s) on file. Showing the most recent 13.
- Feb 13, 2023
Airworthiness Directives; Textron Aviation Inc. (Type Certificate Previously Held by Cessna Aircraft Company) Airplanes
The FAA is adopting a new airworthiness directive (AD) for all Textron Aviation Inc. (type certificate previously held by Cessna Aircraft Company) (Textron) Model 210N, 210R, P210N, P210R, T210N, T210R, 177, 177A, 177B, 177RG, and F177RG airplanes. This AD was prompted by the in-flight break-up of a Model T210M airpla…
- Jul 10, 2018
Airworthiness Directives; Piper Aircraft, Inc.
We are adopting a new airworthiness directive (AD) for certain Piper Aircraft, Inc. (Piper) Models PA-46-600TP (M600) airplanes. This AD requires inserting temporary airspeed limitations into the pilot's operating handbook, installing a temporary placard, inspecting rivets on the cockpit canopy above the left and righ…
- Jul 7, 2015
Airworthiness Directives; Piper Aircraft, Inc. Airplanes
We are adopting a new airworthiness directive (AD) for certain Piper Aircraft, Inc. Models PA-46-350P and PA-46-500TP airplanes. This AD requires installing cable ties around the cabin altitude encoder and the supporting structure, adding thread-locking compound to the threads of the existing single fastener; and repe…
- May 12, 2015
Airworthiness Directives; Zodiac Aerotechnics (Formerly Intertechnique Aircraft Systems) Oxygen Mask Regulators
We are adopting a new airworthiness directive (AD) for certain Zodiac Aerotechnics (formerly Intertechnique Aircraft Systems) oxygen mask regulators. This AD was prompted by a report of a malfunctioning mask having an inflatable harness with a high premature rupture rate due to defective silicon. This AD requires insp…
- Apr 29, 2015
Airworthiness Directives; Various Aircraft Equipped With Wing Lift Struts
We are superseding Airworthiness Directive (AD) 99-01-05 R1, which applied to certain aircraft equipped with wing lift struts. AD 99-01-05 R1 required repetitively inspecting the wing lift struts for corrosion; repetitively inspecting the wing lift strut forks for cracks; replacing any corroded wing lift strut; replac…
- Dec 31, 2014
Airworthiness Directives; Various Aircraft Equipped With Wing Lift Struts
We propose to supersede Airworthiness Directive (AD) 99-01-05 R1, which applies to certain aircraft equipped with wing lift struts. AD 99-01-05 R1 currently requires repetitively inspecting the wing lift struts for corrosion; repetitively inspecting the wing lift strut forks for cracks; replacing any corroded wing lif…
- Dec 31, 2013
Airworthiness Directives; Various Aircraft Equipped With Wing Lift Struts
The FAA is correcting an airworthiness directive (AD) that published in the Federal Register. That AD applies to certain aircraft equipped with wing lift struts. The list of affected airplanes in the Applicability section is incorrect. Several Piper Aircraft, Inc. Model PA-18 airplanes were inadvertently omitted from…
- Dec 10, 2013
Airworthiness Directives; Various Aircraft Equipped with Wing Lift Struts
We are revising Airworthiness Directive (AD) 99-01-05 for certain aircraft equipped with wing lift struts. AD 99-01-05 required repetitively inspecting the wing lift struts for corrosion; repetitively inspecting the wing lift strut forks for cracks; replacing any corroded wing lift strut; replacing any cracked wing li…
- Jan 16, 2013
Airworthiness Directives; Various Aircraft Equipped With Wing Lift Struts
We propose to revise an existing airworthiness directive (AD) that applies to certain aircraft equipped with wing lift struts. The existing AD currently requires repetitively inspecting the wing lift struts for corrosion; repetitively inspecting the wing lift strut forks for cracks; replacing any corroded wing lift st…
- Dec 3, 2001
Airworthiness Directives; GARMIN International GNS 430 Units
This amendment adopts a new airworthiness directive (AD) that applies to certain GARMIN International (GARMIN) GNS 430 units that are installed on aircraft. This AD requires you to modify the unit to incorporate circuitry changes to the GNS 430 unit's deviation and flag outputs. This AD is the result of reports of ina…
- Aug 6, 2001
Airworthiness Directives; GARMIN International GNS 430 Units
This document proposes to adopt a new airworthiness directive (AD) that would apply to certain GARMIN International (GARMIN) GNS 430 units that are installed on aircraft. The proposed AD would require you to modify the unit to incorporate circuitry changes to the GNS 430 unit's deviation and flag outputs. The proposed…
- Dec 31, 1998
Airworthiness Directives; All Airplane Models of The New Piper Aircraft, Inc. (formerly Piper Aircraft Corporation) That Are Equipped with Wing Lift Struts
This amendment supersedes Airworthiness Directive (AD) 93-10- 06, which currently requires repetitively inspecting the wing lift struts and wing lift strut forks for cracks or corrosion on all airplane models of The New Piper Aircraft, Inc. (Piper) that are equipped with wing lift struts, and replacing any strut or fo…
- Apr 23, 1998
Airworthiness Directives; All Models of The New Piper Aircraft, Inc. (Formerly Piper Aircraft Corporation) Airplanes Equipped With Wing Lift Struts
This document proposes to supersede Airworthiness Directive (AD) 93-10-06, which currently applies to all models of The New Piper Aircraft, Inc. (Piper) airplanes equipped with wing lift struts. AD 93- 10-06 requires repetitively inspecting the wing lift struts and wing lift strut forks for cracks or corrosion, and re…
Advisory circulars & Federal Register
Advisory circulars
No ACs explicitly mention this type. Showing universal operating-rule ACs that apply to all aircraft.
Recent Federal Register · Parts 91 & 43
- 2026-09-14 Use of Certain Restricted Category Aircraft for the Transport of Firefighters for Wildfire Suppression FR ↗
- 2026-07-31 Requirements for Interference-Tolerant Radio Altimeter Systems FR ↗
- 2026-07-02 Enabling Supersonic Overland Flight FR ↗
- 2026-07-01 Mechanic Certification: Inspection Rating and Recent Experience Requirements FR ↗
- 2026-06-30 Designation-Restrict the Operation of Unmanned Aircraft in Close Proximity to a Fixed Site Facility; Extension of Comment Period FR ↗
Sources
- FAA Aircraft Registry ↗ Refreshed Apr 27, 2026 Available
- NTSB CAROL ↗ Refreshed Jun 10, 2026 Available
- Federal Register (FAA Airworthiness Directives) ↗ Refreshed Apr 27, 2026 Available