SCHEDULE OF AIRWORTHINESS DIRECTIVES
Piper PA-31T Cheyenne II · Airworthiness Directives
Overview
This document is a schedule of airworthiness directives issued by the Civil Aviation Safety Authority of Australia, specifically addressing safety concerns for the Piper PA-31 series aeroplanes. It focuses on the electroluminescent panel inverters used in the PA-31T1 Cheyenne I and Cheyenne II models. The directive outlines the applicability of the airworthiness directive to specific serial numbers and mandates compliance actions based on a Piper service bulletin. The document is crucial for ensuring the safety and airworthiness of the affected aircraft models, particularly in preventing incidents related to electrical failures in the cockpit.
- The directive applies to Piper PA-31T1 Cheyenne I and Cheyenne II models.
- Affected serial numbers for Cheyenne I are 31T-7804001 to 31-7904016.
- Affected serial numbers for Cheyenne II are 31T-7400002 to 31T-7920036.
- Compliance must be achieved within 100 hours of time in service after December 31, 1979.
- Action must be taken in accordance with Piper SB No. 640.
Document
Source
Originally published by services.casa.gov.au. Sprinkle hosts a reference copy with an added summary, specifications and searchable full text.
Document details
- Type
- Airworthiness Directives
- Year
- 1979
- Pages
- 1
- File size
- 11 KB
- Publisher
- services.casa.gov.au
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- Pilot's Operating Handbook / AFM
- Checklist
- Maintenance Manual
- Parts Catalog (IPC)
- Systems & Wiring
- Service Bulletins
- Type Certificate (TCDS)
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In this document
Applicability
The airworthiness directive applies to specific serial numbers of the Piper PA-31T1 Cheyenne I and Cheyenne II models. This includes Cheyenne I serial numbers 31T-7804001 to 31-7904016 and Cheyenne II serial numbers 31T-7400002 to 31T-7920036.
Requirement
The requirement outlined in this directive is to take action in accordance with Piper Service Bulletin No. 640, which provides detailed instructions on addressing the identified safety issue.
Compliance
Compliance with this airworthiness directive is required within 100 hours of time in service after December 31, 1979. This timeline is critical for ensuring that the necessary safety measures are implemented promptly.
Background
The background section details incidents that have occurred overseas, where shorting in the electroluminescent panel inverters has led to smoke in the cockpit. This highlights the importance of addressing the issue to maintain safety in flight operations.
Safety notes
- Shorting in electroluminescent panel inverters can result in smoke in the cockpit.
Full document text
COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY SCHEDULE OF AIRWORTHINESS DIRECTIVES Piper PA-31 Series Aeroplanes AD/PA-31/87 Electroluminescent Panel Inverters 12/79 Applicability: Models PA-31T1 Cheyenne I S/Nos. 31T-7804001 to 31-7904016, and PA-31T1 Cheyenne/Cheyenne II S/Nos. 31T-7400002 to 31T-7920036. Requirement: Action in accordance with Piper SB No. 640. Note: (FAA AD 79-19-09 Amdt. 39-3560 refers). Compliance: Within 100 hours time in service after 31 December 1979. Background: There have been a number of cases overseas where shorting has occurred in the electroluminescent panel inverters resulting in smoke in the cockpit.