# AD 47-02-09: Cabin Heater Valve Box

- Type: Airworthiness directive
- Status: Current
- Products: Superior V and V-2
- Superseded by: Nothing supersedes this AD
- Product type: Aircraft, Small airplane
- Registered aircraft: 11 may be affected, by airframe or engine model (OpenAirDocs)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/12938000FC83F7D886256A560066E990.0001
- DRS record last changed: May 30, 2024
- Page: https://openairdocs.org/ad/47-02-09

## The airworthiness directive

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.)

## Affected data sheets (1) (OpenAirDocs)

The type certificate data sheets whose models the AD names.

- [TCDS A-778](https://openairdocs.org/tcds/A-778): Superior Aircraft Company; names 2 of 2 models: V-2, V

## Registered aircraft it may apply to (OpenAirDocs)

Matched by airframe and engine model; the AD's applicability may narrow it by serial number, part number or equipment.

- Aircraft: 11 (11 by airframe model, 0 by engine model)
- Makers: Culver 11

Models with the most aircraft:

- [Culver V](https://openairdocs.org/model/culver-v): 11 aircraft (airframe model)

All 1 models: https://openairdocs.org/ad/47-02-09/models.md
Every aircraft: https://openairdocs.org/ad/47-02-09/aircraft.md

Its text cites no advisory circulars or STCs.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.