47-02-06: Hydraulic Hand Pump Shutoff Valve
FAA order 47-02-06 is an airworthiness directive. The FAA's subject line: Hydraulic Hand Pump Shutoff Valve. System: engine.
What it applies to as the FAA lists it
- Kind of product
- Aircraft
- Makes
- The Boeing Company
- Models
- C54-DC, DC-4
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 (775 characters)
47-02-06 DOUGLAS: (Was Service Note 3 of AD-762-7.) Applies to C-54-DC Series Airplanes Incorporating Brake Pressure Accumulators and All DC-4's up to Serial Number 43065. \n\n\tRework the hydraulic hand pump shutoff valve 5241991 by replacing the valve retainer, spring and plunger with a sleeve and new type packings. The existing P/N 5241991 and 4242103 are to be removed and Nos. 2343816-4 and 2343816-6 restamped on the valve assembly and valve body, respectively. Also, change placard at the hand pump shutoff valve control to read "brakes, cowl flaps, nose wheel steering and windshield wiper" in the forward position and "landing gear, wing flaps, and main accumulator" in the rear position. \n\n\t(Douglas Service Bulletin DC-4 No. 3, covers this same subject.)
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/47-02-06.json · aircraft systems.