47-10-11: Fire Detector Replacement
FAA order 47-10-11 is an airworthiness directive. The FAA's subject line: Fire Detector Replacement. System: other and general.
What it applies to as the FAA lists it
- Kind of product
- Aircraft
- Makes
- Lockheed Aircraft Corporation
- Models
- 49-46
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 (509 characters)
47-10-11 LOCKHEED: (Was Mandatory Note 13 of AD-763-3.) Applies to All Model 49 Serials Up to and Including 2088.
Compliance required not later than 200 hours of operation after March 1, 1947.
Replace all Fenwall Type S-2223 fire detector units on fire seals and firewalls and in nacelles and cabin heater compartments with Type 17343-3-450 fire detector units (100 units for each Model 49-51 aircraft, 116 units for each Model 49-46 aircraft.)
(LAC Service Bulletin 49/SB-65 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/47-10-11.json · aircraft systems.