61-06-05: Rudder Boost Piston Locknut
FAA order 61-06-05 is an airworthiness directive in force since March 23, 1961. The FAA's subject line: Rudder Boost Piston Locknut. It names Douglas DC-8: about 6 aircraft on the U.S. register today, 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
- Aircraft
- Makes
- The Boeing Company
- Models
- DC-8-11, DC-8-12, DC-8-21, DC-8-31, DC-8-32, DC-8-33, DC-8-41, DC-8-42, DC-8-43, DC-8-51, DC-8-52, DC-8-53, DC-8-55, DC-8-61, DC-8-61F, DC-8-62, DC-8-62F, DC-8-63, DC-8-63F, DC-8-71, DC-8-71F, DC-8-72, DC-8-72F, DC-8-73, DC-8-73F, DC-8F-54, DC-8F-55
- On this site
- Douglas DC-8 6 registered
Dates and paperwork
- In force since
- March 23, 1961
- Published
- March 23, 1961
- 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 (1,140 characters)
61-06-05 DOUGLAS: Amdt. 270 Part 507 Federal Register March 23, 1961. Applies to All DC-8 Series Aircraft. \n\n\tCompliance required within the next 20 hours' time in service, unless already accomplished in accordance with Douglas Alert Bulletin dated February 24, 1961. \n\n\tAs a result of reported instances of loosened rudder boost piston end assembly locknut, the following must be accomplished. \n\n\tRefer to DC-8 Overhaul Manual, Chapter 27-19-2, page 18. Visually inspect for loose locknut P/N NAS 509-16 and proper installation and safetying to locknut of lockwasher P/N NAS 513-16. Insure that lockwasher is not installed backwards and that tang on lockwasher is engaged in notch in piston end and that piston has not rotated out of its proper position. If any discrepancies are found, they must be corrected in accordance with the DC-8 Overhaul Manual and Douglas Alert Bulletin dated February 24, 1961, prior to further flight. \n\n\tThis directive becomes effective upon publicationin the Federal Register for all person except those to whom it was made effective immediately by individual telegrams dated March 8, 1961.
Related safety bulletins advice on the same designs, not orders
2019-02-19NE-19-03 · Escape Slide Maintenance Tasks and Intervals - JASC 2565
2014-11-24NM-15-03 · Flight Controls
2008-12-11NM-09-03 · Engine Fuel and Control - Implementing Fuel Tank System Airworthiness Limitations
2006-07-27NM-06-57 · Reports of damage to airplanes and to property on the ground caused by blue or clear ice falling from airplanes.
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/61-06-05.json · aircraft systems.