AD 94-7788

Published 1994-04-01 · 3 models · 57 US-registered tails affected · Federal Register

Airworthiness Directives: Aerostar Aircraft Corporation PA-60-600 and PA-60-700 Series Airplanes Federal Register ↗

Abstract

This document proposes to supersede AD 92-13-01, which currently requires inspecting the nose landing gear (NLG) drag brace assembly for corrosion on certain Aerostar Aircraft Corporation (Aerostar) PA-60-600 (Aerostar 600) and PA-60-700 (Aerostar 700) series airplanes, and replacing any corroded components. It also requires replacing the existing spring and piston with new corrosion-resistant parts. The proposed action would require replacing the NLG drag link assembly with a new assembly of improved design. The Federal Aviation Administration (FAA) has received several reports of frozen moisture in the cylinder of the over-center release system, which has led to nose gear collapse on airplanes already in compliance with AD 92-13-01. The actions specified by the proposed AD are intended to prevent failure of the NLG caused by frozen moisture in the cylinder, which could lead to nose gear collapse and damage to the airplane.

Applicability · by US fleet size

PIPER PA-60-602P TCDS A17WE 31 tails
PIPER PA-60-700P TCDS A17WE 17 tails
PIPER PA-60-601P TCDS A17WE 9 tails

Compliance instructions

Required actions, compliance times, parts/serial numbers and methods of compliance are in the Federal Register publication — not paraphrased here. Read AD on Federal Register ↗