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PIPER L-4A

3 registered · 1946–1948 · 1 NTSB events · 2 ADs

About this data

Fixed Wing Single Engine · as of Sep 21, 2026

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Distribution · currently registered

By state (top 10)

  • PA 66.7% 2
  • WA 33.3% 1

By decade of manufacture

  • 1940s 66.7% 2
  • Unknown 33.3% 1

NTSB records

1 event(s) on file. Showing the most recent 1.

Airworthiness directives

2 directive(s) on file. Showing the most recent 2.

  • 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…

    Atlas AD Federal Register ↗
  • 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…

    Atlas AD Federal Register ↗

Advisory circulars & Federal Register

Registered N-numbers · 3

3 of 3 ● NTSB events on file · orange tails have Atlas pages · Look up queries the live FAA registry (owner, address, last airworthiness)
N-number St Year NTSB FAA
N4055S PA — · Look up ↗
N87910 PA 1946 ● Look up ↗
N91MA WA 1948 · Look up ↗

Source — FAA Aircraft Registry

Sources