SCHEDULE OF AIRWORTHINESS DIRECTIVES
CESSNA 170B · Airworthiness Directives
Overview
This document outlines the Airworthiness Directives related to air induction systems, specifically focusing on the inspection and maintenance of Brackett Aircraft Specialities engine air inlet filter assemblies. It is applicable to various aircraft models, including the Cessna 170 and its variants. The directive mandates inspections of the aluminium diamond mesh retainer within the air filter assembly to ensure safety and compliance with aviation regulations. If any cracks or failures are detected, the retainer must be replaced with a specified steel screen or the original air filter assembly must be refitted. The compliance timeline is set at 100 hours of service after a specified date, emphasizing the importance of regular maintenance for safe aircraft operation.
- Inspect the aluminium diamond mesh retainer for cracks or failed areas.
- Replace the retainer with a specified steel screen if defects are found.
- Compliance is required within 100 hours of service after March 31, 1979.
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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In this document
Applicability
The directive applies to Brackett Aircraft Specialities engine air inlet filter assemblies with specific model numbers, including BA-5110, which is used in the Cessna 170, 170A, 170B, 172, and 172A to M.
Inspection Requirement
Operators are required to remove the foam element from the air filter assembly and inspect the aluminium diamond mesh retainer for any cracks or failed areas. If any issues are found, the retainer must be replaced before further flight.
Compliance Timeline
Compliance with the directive is required within 100 hours of service after March 31, 1979, and subsequently at intervals not exceeding 100 hours until the necessary replacements are made.
Safety notes
- Failure to comply with the inspection requirements may compromise aircraft safety.
Full document text
COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 107 CIVIL AVIATION SAFETY AUTHORITY SCHEDULE OF AIRWORTHINESS DIRECTIVES Air Induction Systems AD/AIRIND/1 Brackett Aircraft Specialities Air Inlet Filter Assembly Inspection 2/79 Applicability: Brackett Aircraft Specialities engine air inlet filter assemblies model Nos. BA-4106, BA-4210, BA-5110, BA-6110 and BA-8110. Requirement: With foam element removed from the air filter assembly, inspect the aluminium diamond mesh retainer for cracks or failed areas. If cracks or failed areas are found replace retainer before further flight with a steel screen, P/N. as listed below, or refit the aircraft manufacturer’s original air filter assembly. For Filter Assembly P/N Use Steel Screen P/N BA-4106, BA-4210 BA-4109 BA-5110, BA-6110 BA-5101 BA-8110 BA-8109 Note: The air inlet filter assemblies are fitted to, but not necessarily limited to, the following aircraft: Filter Model Aircraft 1. BA-4106 Cessna 150, 150A to M, A150L and A150M. Piper PA-20, PA-20-115 and PA-20-135. 2. BA-4210 Grumman American AA-1, AA-1A, AA-1B and AA-5. 3. BA-5110 Cessna 170, 170A, 170B, 172 and 172A to M. 4. BA-6110 Mooney M20, M20A, M20B, M20C, M20D and M20G. 5. BA-8110 Cessna 180C to K, 182Bto Q, 185, 185A to E and A185F. Compliance: Within 100 hours time in service after 31 March 1979 and thereafter at intervals not exceeding 100 hours time in service until the aluminium diamond mesh retainer is replaced with a steel screen, P/N. as applicable, or the aircraft manufacturer’s original air filter assembly is refitted.
What's in the CESSNA 170B TCDS
A Type Certificate Data Sheet (TCDS) is the FAA's record of what an aircraft type was approved as. It is the source of truth for weights, seating, fuel and the rules the design was certified against. Expand any line to see what it means.
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