The U.S. aircraft register, updated daily
FAA orders · airworthiness directive · current

59-22-01: Oil Breather Lines

FAA order 59-22-01 is an airworthiness directive. The FAA's subject line: Oil Breather Lines. System: other and general.

What it applies to as the FAA lists it

Kind of product
Aircraft
Makes
Piaggio & C.
Models
P.136-L2

Dates and paperwork

Docket
Unknown
Status
Current
The FAA's document
Read the order on the FAA's site

The order itself the regulatory text, as published

Show the full text (412 characters)
59-22-01 PIAGGIO: Applies to All Model P.136-L2 Aircraft. Compliance required by November 30, 1959. In order to preclude the possibility of condensed water vapor from freezing and obstructing the oil tank breather lines, these lines for both the right and left engines should be rerouted to provide an increased slope in accordance with Piaggio & Co. Change Order No. 36- 52 which covers this same subject.

Source: FAA Dynamic Regulatory System, airworthiness directives. The FAA's document is the authority; the register counts are this site's, from the FAA register of November 6, 2026. Connections as data: /graph/directive/59-22-01.json · aircraft systems.