47-02-09: Cabin Heater Valve Box
FAA order 47-02-09 is an airworthiness directive. The FAA's subject line: Cabin Heater Valve Box. System: engine.
What it applies to as the FAA lists it
- Kind of product
- Aircraft
- Makes
- Superior Aircraft Company
- Models
- V, V-2
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 (399 characters)
47-02-09 CULVER: (Was Mandatory Note 2 of AD-778-2.) Applies to Models V and V2 Aircraft Serial Numbers V-1 to V-150 Inclusive.
Compliance required prior to April 1, 1947.
Replace the brazed cabin heater valve box mounted on the firewall with a similar welded valve box which has fire resistant properties equivalent to the firewall.
(Culver Service Bulletin No. 7 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/47-02-09.json · aircraft systems.