48-12-03: Smoke Detector System
FAA order 48-12-03 is an airworthiness directive. The FAA's subject line: Smoke Detector System. System: emergency equipment.
What it applies to as the FAA lists it
- Kind of product
- Aircraft
- Makes
- Lockheed Aircraft Corporation
- Models
- 649-79, 749-79
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 (1,208 characters)
48-12-03 LOCKHEED: Applies to All 649 and 749 Series Aircraft As Specified by Civil Air Regulations Amendments 41-3, 42-2 and 61-2.
To be accomplished not later than the dates specified in the above amendments as revised by special Civil Air Regulations Serial Nos. 385, 390, 390A, 390B and any subsequent regulations affecting these compliance dates.
All air carrier aircraft must be modified in all necessary respects to comply with the aircraft fire prevention requirements outlined in CAR Amendments 41-3, 42-2, and 61-2. Compliance with those requirements may be completed as follows:
1. Revise the smoke detection system in accordance with LAC Service Bulletin 49/SB-401. Other rework shown to be equivalent to that covered by this Service Bulletin will also be acceptable. (Applies to Serial Nos. 2512 through 2515, 2519 through 2543, 2545 through 2550, 2552 through 2555, 2560, and 2561 only.)
2. Inspect all cabin interior fabrics and finishes to determine that any substitutes or replacements for the materials originally installed comply with the applicable sections of CAR 4b. Safety Regulation Release 259 outlines acceptable procedures for complying with these particular requirements.
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/48-12-03.json · aircraft systems.