The FAA is superseding Airworthiness Directive (AD) 2022–04–04 for certain Continental Aerospace Technologies, Inc. (Continental) Model C–125, C145, IO–360, IO–470, IO–550, O–300, O–470, TSIO–360, and TSIO–520 series engines and certain Continental Motors IO–520 series engines with a certain oil filter adapter installed.
Download the pdf of AD-2023-17-04 below.
PIPER CONSIDERS COMPLIANCE MANDATORY
This is a truncated version of the service bulletin for a copy of the complete service bulletin, download the attachment below:
Service Bulletin (SB) 1375C supersedes SB 1375, SB 1375A, and SB 1375B in their entirety. If any of the four factory original screws in the upper flange were replaced with oversize fasteners as part of compliance with SB1375A, contact Piper for disposition. Aircraft that have complied with SB 1375B are in compliance with SB 1375C.
WARNING: SB 1375A SPECIFIED INCORRECT REPLACEMENT SCREWS FOR THE UPPER FLANGE. ACCORDINGLY, IF ANY OF THE FOUR FACTORY ORIGINAL SCREWS IN THE UPPER FLANGE WERE REPLACED WITH OVERSIZE FASTENERS AS PART OF COMPLIANCE WITH SB1375A, THE AIRCRAFT MAY NO LONGER BE AIRWORTHY, CONTACT PIPER FOR DISPOSITION.
SUBJECT: periodic replacement of main landing gear attachment hardware
REASON FOR REVISION: SB 1375C revises the instructions for clarity and corrections.
MODELS and serial numbers affected:
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA–2022–0891; Project Identifier AD–2022–00585–A,E,R; Amendment 39–22432; AD 2023–09–09]
RIN 2120–AA64
Airworthiness Directives; Various Airplanes, Helicopters, and Engines
AGENCY: Federal Aviation Administration (FAA), DOT.
ACTION: Final rule.
SUMMARY:
The FAA is adopting a new airworthiness directive (AD) for turbocharged, reciprocating engine-powered airplanes and helicopters and turbocharged, reciprocating engines with a certain v-band coupling installed.
Since the FAA issued AD 2023-04-08, the FAA determined that IO-470-A, -C, -F, and -LO; and TSIO-360-F and -FB model engines are also affected by the unsafe condition and should be added to the applicability.
Additionally, the FAA determined that the limitations in the special flight permit paragraph, specifying “no metal contamination in the oil filter”, did not account for trace metal particles that may be found in newer engines due to break-in of the engine.
AD 2023-05-16 supersedes AD 2023-04-08.
If you have fully complied with AD 2023-04-08 prior to the effective date of AD 2023-05-16 your compliance is accounted for in paragraph (f) of the AD and you are not required to re-perform the required action. Record compliance accordingly.
AD 2023-05-16 did not change the required action paragraph to what is found in AD 2023-04-08.
AD 2023-05-16 is effective upon publication.