71-13-01: Fuel Injector Manifold To Nozzle Tube Assemblies
FAA order 71-13-01 is an airworthiness directive in force since June 22, 1971. The FAA's subject line: Fuel Injector Manifold To Nozzle Tube Assemblies. It names the Lycoming TIO-540-A1A, Lycoming TIO-540-A2B, Lycoming TIO-540-A2C, Lycoming TIO-540 series engines: about 5,094 aircraft on the U.S. register today across them, though an order usually covers particular versions or serial numbers rather than every one. System: engine.
What it applies to as the FAA lists it
- Kind of product
- Engine
- Makes
- Lycoming Engines
- Models
- TIO-540-A1A, TIO-540-A1B, TIO-540-A1C, TIO-540-A2A, TIO-540-A2B, TIO-540-A2C
- Engine series
- Lycoming TIO-540-A1A 5 aircraft
Lycoming TIO-540-A2B 4 aircraft
Lycoming TIO-540-A2C 6 aircraft
Lycoming TIO-540 series 5,079 aircraft
Dates and paperwork
- In force since
- June 22, 1971
- Docket
- Unknown
- Replaced by
- 71-13-01R1
- Status
- Historical
- The FAA's document
- Read the order on the FAA's site
The order itself the regulatory text, as published
Show the full text (839 characters)
71-13-01 AVCO LYCOMING: Amdt. 39-1231. Applies to TIO 540-A series engines with serial numbers lower than 1931-61.
Compliance required within the next 50 hours' time in service after the effective date of this AD, unless already accomplished.
To prevent possible failures of the fuel injector manifold to nozzle tube assemblies accomplish the following:
1. Visually inspect each tube assembly for fuel stains, cracks, dents and bend radii under 5/8 inch. Replace cracked or dented lines and increase bends to 5/8 inch or more without denting or kinking before further flight.
2. Install support clamps in accordance with the instructions contained in Lycoming Service Bulletin No. 335 or later revision approved by the Chief, Engineering and Manufacturing Branch, FAA, Eastern Region.
This amendment is effective June 22, 1971.
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 October 5, 2026. Connections as data: /graph/directive/71-13-01.json · aircraft systems.