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SCHEDULE OF AIRWORTHINESS DIRECTIVES

Piper PA-34 Seneca V · Airworthiness Directives

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Overview

This document is an Airworthiness Directive (AD) issued by the Civil Aviation Safety Authority of Australia concerning the Piper PA-34 (Seneca) series aeroplanes. It outlines the retirement lives for critical components of the aircraft, specifically the wing main spar and airframe. The directive applies to all models within the PA-34 series, providing specific retirement times based on the model type and flight hours. The document emphasizes the importance of adhering to these retirement schedules to ensure the safety and airworthiness of the aircraft. Compliance with the directive is mandatory, and it includes guidelines for determining the average flight time when the aircraft's history is unknown.

  • PA-34-200 series: retire wing components before 13,000 hours or 13,000 flights.
  • PA-34-200T series: retire wing components before 14,500 hours or 14,500 flights.
  • PA-34-220T series: retire wing components before 12,300 hours or 12,300 flights.
  • All models: retire the remainder of the airframe before 24,400 hours or 24,400 flights.
  • If aircraft history is unknown, assume an average flight time of 39 minutes (0.65 hours).

Document

Source

Originally published by services.casa.gov.au. Sprinkle hosts a reference copy with an added summary, specifications and searchable full text.

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Document details

Type
Airworthiness Directives
Year
1995
Pages
1
File size
11 KB
Publisher
services.casa.gov.au
Documentation completeness
6/7

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In this document

Applicability

The directive applies to all models of the Piper PA-34 series, including the PA-34-200, PA-34-200T, and PA-34-220T.

Retirement Lives

The directive specifies the retirement lives for the wing main spar and associated structures: PA-34-200 series must retire components before 13,000 hours or 13,000 flights; PA-34-200T series before 14,500 hours or 14,500 flights; PA-34-220T series before 12,300 hours or 12,300 flights. The remainder of the airframe must be retired before 24,400 hours or 24,400 flights for all models.

Compliance

Compliance with the original Airworthiness Directive remains unchanged. Affected components must be retired upon reaching their specified safe lives or by 5 April 1995, whichever occurs last.

Background

The manufacturer provided a fatigue substantiation for the safe life of the wing and associated structures. The amendment clarifies the components to be retired and addresses cases where the aircraft's history is unknown.

Safety notes

  • Retirement of components is critical for maintaining airworthiness.
  • Failure to comply with retirement schedules may compromise safety.

Full document text

COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY SCHEDULE OF AIRWORTHINESS DIRECTIVES Piper PA-34 (Seneca) Series Aeroplanes AD/PA-34/45 Amdt 1 Wing and Airframe Retirement Lives 6/95 Applicability: All models. Requirement: 1. Retire the wing main spar, wing main spar carry-through structure, and wing main spar attachment bolts as follows: For the PA-34-200 series, before 13 000 hours time in service or 13 000 flights, whichever occurs first; For the PA-34-200T series, before 14 500 hours time in service or 14 500 flights, whichever occurs first; For the PA-34-220T series, before 12 300 hours time in service or 12 300 flights, whichever occurs first. 2. Retire the remainder of the airframe, for all models, before 24 400 hours time in service or 24 400 flights, whichever occurs first. Note: Where a period of the aircraft’s history is unknown, or where a longer average flight time cannot be justified, it must be assumed that the average flight time for the period is 39 minutes (0.65 hours). Compliance: The compliance of the original AD remains unchanged; Retire affected components upon reaching their safe lives or 5 April 1995, whichever occurs last. This amendment is effective 25 May 1995. Background: The manufacturer has submitted a fatigue substantiation for the safe life of the wing and associated structure. Pending substantiation of a longer safe life for the remainder of the aircraft structure a life corresponding to twice the PA-34-220T wing life has been promulgated. Amendment 1 has been raised to add a note addressing unknown periods of aircraft history and clarifies the components to be retired.