59-14-01: Utility Hydraulic System
FAA order 59-14-01 is an airworthiness directive. The FAA's subject line: Utility Hydraulic System. It names Boeing 707: about 9 aircraft on the U.S. register today, though an order usually covers particular versions or serial numbers rather than every one. System: heating, ice protection and utility systems.
What it applies to as the FAA lists it
- Kind of product
- Aircraft
- Makes
- The Boeing Company
- Models
- 707-100 Long Body, 707-100B Long Body, 707-100B Short Body
- On this site
- Boeing 707 9 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 (714 characters)
59-14-01\tBOEING: Applies to the following Boeing 707-100 Series Aircraft Serial Numbers 17586 through 17591, 17609, 17628 through 17637 and 17658 through 17662. \n\tCompliance required as indicated. \n\tAs a result of the complete loss of hydraulic fluid in the utility hydraulic system of a 707- 100 series aircraft caused by the rupture of the aluminum tube assembly in the nose wheel well door-open system, the following modification shall be accomplished. Prior to July 31, 1959, the nose wheel door-open aluminum tube assembly 50-6848-45 shall be replaced with corrosion resistant steel tubing 3/8 inch O.D. by 0.028 inch wall thickness. \n\t(Boeing Service Bulletin No. 412 pertains to this same subject.)
Related safety bulletins advice on the same designs, not orders
2014-11-24NM-15-03 · Flight Controls
2014-11-06NM-15-02 · Cabin Equipment/Furnishings
2007-03-14NM-07-19 · Freeplay of the outboard aileron tabs
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/59-14-01.json · aircraft systems.