# AD 59-22-01: Oil Breather Lines

- Type: Airworthiness directive
- Status: Current
- Products: Piaggio & C. P.136-L2
- Superseded by: Nothing supersedes this AD
- Product type: Aircraft, Small airplane
- Registered aircraft: 2 may be affected, by airframe or engine model (OpenAirDocs)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/2FF6B74F359C342D86256A45006ACCDB.0001
- DRS record last changed: May 30, 2024
- Page: https://openairdocs.org/ad/59-22-01

## The airworthiness directive

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.

## Affected data sheets (1) (OpenAirDocs)

The type certificate data sheets whose models the AD names.

- [TCDS A-813](https://openairdocs.org/tcds/A-813): Piaggio & C.; names 1 of 3 models: P.136-L2

## Registered aircraft it may apply to (OpenAirDocs)

Matched by airframe and engine model; the AD's applicability may narrow it by serial number, part number or equipment.

- Aircraft: 2 (2 by airframe model, 0 by engine model)
- Makers: Piaggio 2

Models with the most aircraft:

- [Piaggio P.136-L2](https://openairdocs.org/model/piaggio-p-136-l2): 2 aircraft (airframe model)

All 1 models: https://openairdocs.org/ad/59-22-01/models.md
Every aircraft: https://openairdocs.org/ad/59-22-01/aircraft.md

Its text cites no advisory circulars or STCs.

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