46-36-03: Muffler Brace
FAA order 46-36-03 is an airworthiness directive. The FAA's subject line: Muffler Brace. It names Piper PA-12 Super Cruiser: about 1,247 aircraft on the U.S. register today, though an order usually covers particular versions or serial numbers rather than every one. System: other and general.
What it applies to as the FAA lists it
- Kind of product
- Aircraft
- Makes
- FS 2003 Corp.
- Models
- PA-12
- On this site
- Piper PA-12 Super Cruiser 1,247 registered
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 (640 characters)
46-36-03 PIPER: (Was Mandatory Note 2 of AD-780-3.) Applies Only to PA-12 Aircraft Serial Numbers 12-1 to 12-285, Inclusive.
Compliance required not later than next periodic inspection.
To prevent possible failure of the tailpipe and cracking of the muffler, install the additional brace tube, Piper P/N 10860 and new clamp, P/N 80002-28. The new brace will form, together with the original brace, a "V" instead of a single leg. A careful inspection of the muffler should be made and if any cracks are present, a new muffler should be installed.
(Piper Service Bulletin No. 92 dated August 7, 1946, covers this same subject.)
Related safety bulletins advice on the same designs, not orders
2018-11-21SW-18-31 · NAVIGATION, ATTITUDE, AND DIRECTION DATA SYSTEM
1998-10-21ACE-99-01 ·
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/46-36-03.json · aircraft systems.