Commonwealth legislation

AD/PA-34/49 - Engine Air Filter

In ForceCTH

Jurisdiction

Commonwealth

Collection

legislative instrument

Plain English Summary

4/10 complexity

This Airworthiness Directive requires owners/operators of specified Piper PA‑34 Seneca aircraft fitted with Facet engine air inlet filter P/N 638873 (manufactured Jan 1997–Sep 1998) to inspect those filters per Piper Service Bulletin No.1022 or Purolator Service Bulletin No.090298.01. Inspections must occur at the next filter inspection or within 25 hours time‑in‑service and then every 25 hours; spare filters must be checked before installation. The measure responds to reported manufacturing defects that can cause filter break‑up and engine ingestion.

JSON API

Deep dive

Want the full deep dive?

Zoe can write the in-depth analysis on top of the summary above: how it works, who it affects and what each part actually does.

Current sections

Direct links to the current provisions in AD/PA-34/49 - Engine Air Filter.

AD/PA-34/49 - Engine Air Filter

COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY

SCHEDULE OF AIRWORTHINESS DIRECTIVES

View image in the official source
Piper PA-34 (Seneca) Series Aeroplanes

AD/PA-34/49 Engine Air Filter 9/99

Applicability: PA-34-200T Seneca II aircraft serial numbers 34-7570001 through 34-8170092, and

PA-34-220T Seneca III aircraft serial numbers 34-8133001 through 34-8633031, 3433001 through 3433225 and

PA-34-220T Seneca III (28V) aircraft serial numbers 3448001 through 3448035, and

PA-34-220T Seneca IV aircraft serial numbers 3448038 through 3448079, 3447001 through 3447029, and

PA-34-220T Seneca V aircraft serial numbers 3449002 through 3449078;

fitted with a Facet engine air inlet filter part number (P/N) 638873 manufactured in the period January 1997 to September 1998.

Note 1: Filters of concern can be identified by accessing the filter and locating the brand name and part number. Filters of concern are branded “FACET 638873” in 0.250”(1/4”) high white characters with no date code.

Requirement: To prevent pieces of a damaged air filter from being ingested in the engine, inspect applicable air filters in accordance with Piper Service Bulletin Number (No.) 1022 and/or Purolator Service Bulletin No. 090298.01.

Note 2: Civil Aviation Regulation (CAR) 42ZC (4) (d) permits the holder of a pilot licence, other than a student pilot, that is valid for the aircraft, to change the air filter. Therefore, should applicable air filters be removed from service prior to the effective date of this directive, the directive will no longer be applicable.

Note 3: FAA Airworthiness Directive 99-05-09 refers.

Compliance: Installed filters: At next inspection of the engine air inlet filter element or within 25 hours time in service from the effective date of this directive, whichever occurs first, and thereafter at intervals not to exceed 25 hours time in service.

Spare filters: Prior to installation in a engine.

This Airworthiness Directive becomes effective on 9 September 1999.

Background: This directive has been issued to address reports of cracking and break up of certain air filter elements. The defects resulted from evidence of manufacturing errors in filters produced during the period January 1997 though September 1998. The directive requires applicable filters to be inspected for evidence of deterioration.

Source text

Sourced from the Federal Register of Legislation (legislation.gov.au), CC BY 4.0.

1 AD/PA-34/49 - Engine Air Filter