SA2539SW-D
Replacement of light assembly, International Inflatables Co. P/N68555-1 with DME Corp. EL-104, EL-104A, and EL-104B in emergency slide lighting system. Held by Astronics Luminescent Systems INC, which holds 11 approved modifications in all. Last revised June 2, 2022. System: electrical power.
What it applies to
- Kind of product
- Aircraft
- Design holder
- The Boeing Company; The Boeing Company; The Boeing Company; The Boeing Company; The Boeing Company; The Boeing Company; The Boeing Company; British Aerospace Airbus Limited; General Dynamics Corporation; General Dynamics Corporation; General Dynamics Corporation; General Dynamics Corporation; McDonnell Douglas Corporation; McDonnell Douglas Corporation
- Models
- 707-200, 707-100 Long Body, 707-300, 720, 737-200 Series, 737, 727, 1-11 Series, 22M, 22, 30A, 30, DC-8 Series, DC-9 Series
- Type certificates
- 4A21, 4A21, 4A26, 4A28, A16WE, A16WE, A3WE, A5EU, 4A27, 4A27, 4A30, 4A30, 4A25, A6WE
- On this site
- Boeing 707 9 registered
Boeing 727 37 registered
Boeing 737 2,887 registered
Douglas DC-8 6 registered
Mcdonnell Douglas DC-9 93 registered - The FAA's record
- On the FAA's site
What an approved modification is
A supplemental type certificate is the FAA's approval of a change to a certified design: a new engine or propeller, avionics, an autopilot, floats, a parachute, a larger fuel tank, an ice-protection kit. The company holding it may sell the kit and the paperwork to owners of the listed models; the modification then becomes part of that aircraft's record. The FAA's list says what was approved and for which models, not how many aircraft carry it.
Source: FAA supplemental type certificates (Dynamic Regulatory System). Register counts from the FAA register of October 7, 2026.